The water quality of main rivers in Binzhou City,Shandong Province was comprehensively evaluated based on RAGA-PPCE model. Six main factors such as ammonia nitrogen(NH_3-N),total phosphorus(TP),total nitrogen(TN),chem...The water quality of main rivers in Binzhou City,Shandong Province was comprehensively evaluated based on RAGA-PPCE model. Six main factors such as ammonia nitrogen(NH_3-N),total phosphorus(TP),total nitrogen(TN),chemical oxygen demand(COD),dissolved oxygen(DO) and p H were used to establish the evaluation and classification standards of water quality. The results show that the evaluation results of water quality by RAGA-PPCE model and the fuzzy comprehensive evaluation method are basically the same. The evaluation results of RAGA-PPCE model are objective and reasonable and can be applied to the comprehensive evaluation of water quality.展开更多
This paper aims to explore the pH,COD,ammonia nitrogen,total nitrogen,total phosphorus and other indices regarding Xinli River water in Binzhou City.The results show that the pH of the water quality index is between 7...This paper aims to explore the pH,COD,ammonia nitrogen,total nitrogen,total phosphorus and other indices regarding Xinli River water in Binzhou City.The results show that the pH of the water quality index is between 7.3 and 7.8,slightly alkaline;the COD content of Xinli River is about 140-163 mg/L,and the COD pollution is serious in some water sections;the ammonia nitrogen content of Xinli River is 0.2-2.17 mg/L,the total nitrogen content is about 0.799-1.3 mg/L,the total phosphorus content is about 0.54-0.92 mg/L,suggesting that the water eutrophication is very serious.Due to the large amount of domestic sewage discharged into Xinli River without treatment,slow circulation of river water and other factors,the eutrophication is serious in the urban watercourse.展开更多
The optimal tax rate of COD and ammonia nitrogen was estimated based on the estimated economic loss caused by domestic sewage and the determined tax base in Binzhou City.The results show that due to the pollution of C...The optimal tax rate of COD and ammonia nitrogen was estimated based on the estimated economic loss caused by domestic sewage and the determined tax base in Binzhou City.The results show that due to the pollution of COD and ammonia nitrogen,the average economic loss of domestic sewage in Binzhou City from 2010 to 2017 was 167.292 million and 178.040 million yuan respectively.The average pollution equivalent amount of COD and ammonia nitrogen in domestic sewage in Binzhou City was 43435 and 3900 t respectively,and the average optimal tax rate of COD and ammonia nitrogen was 3.85 and 45.65 yuan/kg respectively.That is,residents should pay a pollution tax of 3.85 yuan for every 1 kg of COD discharged and a pollution tax of 45.65 yuan for every 1 kg of ammonia nitrogen discharged.展开更多
Using the GIS spatial analysis tool,the spatial distribution situation and spatial network structure of 56 tourist attractions graded AAA and above in Binzhou City were studied through the nearest distance,connectivit...Using the GIS spatial analysis tool,the spatial distribution situation and spatial network structure of 56 tourist attractions graded AAA and above in Binzhou City were studied through the nearest distance,connectivity,accessibility,and compactness analysis.In view of the existing problems,some measures to optimize the spatial structure of the tourist attractions in Binizhou were put forward to ensure the development of regional tourism in Binzhou City.The results show that the spatial distribution of tourist attractions graded AAA and above in Binizhou City is uniform.The β index and γ index are respectively 1.36 and 0.47,and the average accessibility is 45.26 km.Binzhou has a weak tourism traffic connection and the accessibility is not high.The compactness index C of the tourist attractions is 0.74,and the compactness degree of the tourist attractions in Binizhou is above the average.展开更多
Relationships between environmental pollution and economic development in Binzhou during 2001- 2013 were studied through an Environmental Kuznets Curve( EKC). The results showed that with the increase of GDP per capit...Relationships between environmental pollution and economic development in Binzhou during 2001- 2013 were studied through an Environmental Kuznets Curve( EKC). The results showed that with the increase of GDP per capita,the emissions of industrial wastewater,COD and ammonia nitrogen in Binzhou City increased at first and then decreased during 2001- 2013,showing inverted-U-shaped curves where turning points appeared in the middle; the emission of domestic sewage showed an upward trend,and a turning point would not appear in a short term; the emissions of domestic COD and ammonia nitrogen dropped firstly and then rose gradually,showing U-shaped curves,and they would not decrease in a short time. The turning points of industrial wastewater,COD and ammonia were at( 4. 29,14 550),( 2. 46,44 803) and( 2. 27,2 708) respectively; domestic sewage had no turning point,and domestic COD and ammonia nitrogen would not reach the turning points in a short term.展开更多
Wind speed,temperature,relative humidity and TSP concentration at three intersections in Binzhou City were monitored,and the relationships of TSP concentration with wind speed,temperature,relative humidity and traffic...Wind speed,temperature,relative humidity and TSP concentration at three intersections in Binzhou City were monitored,and the relationships of TSP concentration with wind speed,temperature,relative humidity and traffic flow at the three intersections in Binzhou City were analyzed by using SPSS.The results show that traffic flow was the main factor affecting TSP concentration of road traffic in Binzhou City.展开更多
Firstly,the current situation of economic growth in Binzhou economic and technological development zone was analyzed firstly,and then existing problems were pointed out. What's more,the goals and strategic orienta...Firstly,the current situation of economic growth in Binzhou economic and technological development zone was analyzed firstly,and then existing problems were pointed out. What's more,the goals and strategic orientation of economic development in the zone during the " 13^(th) FiveYear Plan" period were determined,and several countermeasures and proposals were put forward.展开更多
Taking into account the regional carrying capacity,the population capacity and optimum population of Binzhou City from 2007 to 2017 under certain economic,resource and environmental conditions were calculated based on...Taking into account the regional carrying capacity,the population capacity and optimum population of Binzhou City from 2007 to 2017 under certain economic,resource and environmental conditions were calculated based on PEER model.The results show that the population capacity of Binzhou City during 2007-2017 ranged from 6.03 million to 6.43 million,and ecological optimum population was between 5.05 million and 5.34 million.The actual population of the city was between 3.74 million and 3.94 million.The impact of the "two-child" policy on population growth was small,and there was still room for population growth.The population pressure index was greater than 0.7 and less than 1,showing that economic and resource population carrying capacity had certain surplus but were still not optimistic.Environmental pressure index was relatively high,and population carrying capacity was low.展开更多
Under the macro-background of “all-for-one” tourism,this study analyzes the related concepts and characteristics of inquiry-based learning tourism to understand the significance and role of developing inquiry-based ...Under the macro-background of “all-for-one” tourism,this study analyzes the related concepts and characteristics of inquiry-based learning tourism to understand the significance and role of developing inquiry-based learning tourism in China.With Binzhou as the object of study,this study also explores the development of inquiry-based learning tourism products from the aspects of the product development idea,level,framework and marketing,with a view to providing references for implementing inquiry-based learning tourism activities in other regions.展开更多
Based on the relevant statistics on the agricultural non-point source pollution in Binzhou City,we studied the spatio-temporal variation in agricultural non-point source nitrogen pollution and phosphorus pollution in ...Based on the relevant statistics on the agricultural non-point source pollution in Binzhou City,we studied the spatio-temporal variation in agricultural non-point source nitrogen pollution and phosphorus pollution in Binzhou City during 2008-2015. The results showed that the agricultural non-point source nitrogen pollution and phosphorus pollution in Binzhou City changed from 114400 t and 28800 t in 2008 to110600 t and 24400 t in 2015,respectively; for the non-point source nitrogen pollution sources,the proportion of chemical fertilizer,manure and domestic sewage changed from 80. 41%,10. 47% and 9. 13% in 2008 to 82. 94%,4. 77% and 12. 29% in 2015,respectively; for the non-point source phosphorus pollution sources,the proportion of chemical fertilizer,manure and domestic sewage changed from 89. 29%,8. 32% and 2. 39% in 2008 to 91. 6%,4. 78% and 3. 62% in 2015,respectively; in 2015,the non-point source nitrogen pollution was most serious in Wudi County and Huimin County and least serious in Zhanhua County; the non-point source phosphorus pollution was most serious in Zouping County and least serious in Wudi County.展开更多
The coordinated development of urban and rural areas is an inevitable trend to break the dual urban-rural structure and promote the coordinated development of urban and rural areas.The statistical data on the overall ...The coordinated development of urban and rural areas is an inevitable trend to break the dual urban-rural structure and promote the coordinated development of urban and rural areas.The statistical data on the overall economic and social development of urban and rural areas in Binzhou from 2006 to 2015 were studied and analyzed,and an urban and rural integrated evaluation index system was established,which was evaluated using principal component analysis.The results showed that the overall level of urban and rural integrated development in Binzhou City is low,but has been rising in recent years;and the urbanrural dual structure gradually weakens.展开更多
To evaluate the levels of heavy metal pollution and risks in consumption of aquatic products from a market in Binzhou,the contents of Cu,Zn,Cd,Cr and Pb in the edible part of eight aquatic species such as Ctenopharyng...To evaluate the levels of heavy metal pollution and risks in consumption of aquatic products from a market in Binzhou,the contents of Cu,Zn,Cd,Cr and Pb in the edible part of eight aquatic species such as Ctenopharyngodon idellus were determined by inductively coupled plasma mass spectrometry.The results show that the levels of the five elements differed among different species of aquatic products.The ability of bivalves to accumulate heavy metals was significantly higher than that of fish.Compared with relevant food hygiene standards,there was a certain excess of Cr in Ruditapes philippinarum and Penaeus vannamei.The results of human exposure risk assessment show that the THQ values of the heavy metals in the eight aquatic species were all less than 1,indicating that the consumption of these aquatic products had no potential non-carcinogenic risks.展开更多
As gradual improvement of living environment and indoor decoration form diversification,the indoor air pollution has become the"invisible killer"harming human health,and has been listed as one of ten big thr...As gradual improvement of living environment and indoor decoration form diversification,the indoor air pollution has become the"invisible killer"harming human health,and has been listed as one of ten big threats to human health by the World Health Organization,which also became one of hot issues concerned by countries all over the world.In this paper,through the determination of formaldehyde in some houses of Binzhou,the release of formaldehyde with the increase of time was explored;change of formaldehyde in the same residence in different functional areas was analyzed;the influence of the temperature,humidity and plant to formaldehyde content was also analyzed.展开更多
According to meteorological data at Binzhou Meteorological Station during 1981-2010,basic climate characteristics of meteorological factors(such as temperature,relative humidity and wind velocity,etc.)related to human...According to meteorological data at Binzhou Meteorological Station during 1981-2010,basic climate characteristics of meteorological factors(such as temperature,relative humidity and wind velocity,etc.)related to human comfort are analyzed,and temporal-spatial distribution characteristics of human comfort in Binzhou City are studied.Then,human comfort of tourism in Binzhou City is evaluated.The impacts of each meteorological factor on comfort in different seasons and change tendency of comfort are discussed,and the optimal tourism time in Binzhou City is analyzed.展开更多
To fully understand swine streptococcosis in Binzhou and surrounding areas,we studied its incidence rate and incidence characteristics in 2013,in order to put forward constructive suggestions for scientific prevention...To fully understand swine streptococcosis in Binzhou and surrounding areas,we studied its incidence rate and incidence characteristics in 2013,in order to put forward constructive suggestions for scientific prevention and control of swine streptococcosis. Isolation and purification,biochemical and molecular biology identification and drug susceptibility test of Streptococcus suis were carried out,and mixed infection of S. suis with classical swine fever virus,pseudorabies virus and porcine circovirus virus was statistically analyzed. The results showed that 46 strains of S. suis were screened,and the positive rate was approximately 24. 9%,with high degree of resistance and multiple resistances. S. suis had different degrees of mixed infection with classical swine fever virus,pseudorabies virus and porcine circovirus virus,and the total mixed infection rate was 58. 7%.展开更多
Sustainable utilization state of water resource in Binzhou City was studied by ecological footprint.Results showed that the per capita ecological footprints of living water,producing water and ecological water were re...Sustainable utilization state of water resource in Binzhou City was studied by ecological footprint.Results showed that the per capita ecological footprints of living water,producing water and ecological water were respectively 0.071,1.105 and 0.032 hm2/person.The total per capita ecological footprint was 1.208 hm2/person,and the total per capita ecological carrying capacity was 1.357 hm2/person.The per capita ecological surplus of water resource was 0.149 8 hm2/person.It illustrated that the development and utilization of water resource in Binzhou City were overall sustainable.展开更多
[Objective]The research aimed to analyze precipitation change and agricultural drought and flood degrees during crop growth season in Binzhou.[Method]Based on monthly rainfall and average temperature data at Binzhou m...[Objective]The research aimed to analyze precipitation change and agricultural drought and flood degrees during crop growth season in Binzhou.[Method]Based on monthly rainfall and average temperature data at Binzhou meteorological observatory during March-November of1981-2010,by using linear regression,climatic tendency rate and dry-wet coefficient,precipitation change and agricultural drought and flood degrees during crop growth season of the past 30 years in Binzhou were analyzed from natural precipitation tendency change and satisfaction degree of agricultural water demand during crop growth season.[Result]In the past 30 years,precipitation during growth season in Binzhou presented increasing tendency.Spring,summer and autumn precipitation all increased somewhat,especially summer precipitation.Monthly average rainfall distribution was very uneven,and rainfall in July and August was more.In the past 30 years,average dry-wet coefficient K value during crop growth season in Binzhou was 0.60,it overall belonged to moderate drought climate type,and occurrence frequency of drought was 97%.It belonged to serious drought climate type in spring and autumn and light drought climate type in summer.Dry-wet coefficient presented rising tendency,illustrating that climate was developing toward wet direction.Seen from mean over the years,except humid in July,it was over light drought in other months.[Conclusion]Climate was overall arid during crop growth season in Binzhou,but precipitation somewhat increased in the past 30 years.Therefore,we suggested that artificial rainfall work should be enhanced.展开更多
Using entropy method and the urban ecological environment suitability index method,22 indicators were chosen from economic system,social system,and environmental system to measure and evaluate the suitability of urban...Using entropy method and the urban ecological environment suitability index method,22 indicators were chosen from economic system,social system,and environmental system to measure and evaluate the suitability of urban ecological environment in Binzhou City during 2008-2015. The results showed that the suitability of urban ecological environment in Binzhou City was high overall from 2008 to 2015. It was at grade II in 2008 and 2009 and at grade I in the other years. The development level of economic and environmental systems was relatively high,and some indicators of social system had certain shortcomings.展开更多
基金Supported by the Project of Humanities and Social Sciences in Shandong Province,China(18-ZZ-JJ-01)Key Project of Social Sciences in Binzhou City(18-SKGH-02)Action Plan for Servicing Binzhou of Binzhou University(BZXYSFW201719,BZXYSFW201713)
文摘The water quality of main rivers in Binzhou City,Shandong Province was comprehensively evaluated based on RAGA-PPCE model. Six main factors such as ammonia nitrogen(NH_3-N),total phosphorus(TP),total nitrogen(TN),chemical oxygen demand(COD),dissolved oxygen(DO) and p H were used to establish the evaluation and classification standards of water quality. The results show that the evaluation results of water quality by RAGA-PPCE model and the fuzzy comprehensive evaluation method are basically the same. The evaluation results of RAGA-PPCE model are objective and reasonable and can be applied to the comprehensive evaluation of water quality.
基金Supported by Research Fund of Binzhou University in 2017(BZXYG1712)Shandong Provincial Soft Science Research Program(2017RKB01166)
文摘This paper aims to explore the pH,COD,ammonia nitrogen,total nitrogen,total phosphorus and other indices regarding Xinli River water in Binzhou City.The results show that the pH of the water quality index is between 7.3 and 7.8,slightly alkaline;the COD content of Xinli River is about 140-163 mg/L,and the COD pollution is serious in some water sections;the ammonia nitrogen content of Xinli River is 0.2-2.17 mg/L,the total nitrogen content is about 0.799-1.3 mg/L,the total phosphorus content is about 0.54-0.92 mg/L,suggesting that the water eutrophication is very serious.Due to the large amount of domestic sewage discharged into Xinli River without treatment,slow circulation of river water and other factors,the eutrophication is serious in the urban watercourse.
基金Supported by the Soft Scientific Research Planning Project of Binzhou City(2018BRK04)National Innovation Planning Project for University Students(201810449012)
文摘The optimal tax rate of COD and ammonia nitrogen was estimated based on the estimated economic loss caused by domestic sewage and the determined tax base in Binzhou City.The results show that due to the pollution of COD and ammonia nitrogen,the average economic loss of domestic sewage in Binzhou City from 2010 to 2017 was 167.292 million and 178.040 million yuan respectively.The average pollution equivalent amount of COD and ammonia nitrogen in domestic sewage in Binzhou City was 43435 and 3900 t respectively,and the average optimal tax rate of COD and ammonia nitrogen was 3.85 and 45.65 yuan/kg respectively.That is,residents should pay a pollution tax of 3.85 yuan for every 1 kg of COD discharged and a pollution tax of 45.65 yuan for every 1 kg of ammonia nitrogen discharged.
基金Supported by Dual Service Project of Binzhou University in 2018(BZXYSFW201808)
文摘Using the GIS spatial analysis tool,the spatial distribution situation and spatial network structure of 56 tourist attractions graded AAA and above in Binzhou City were studied through the nearest distance,connectivity,accessibility,and compactness analysis.In view of the existing problems,some measures to optimize the spatial structure of the tourist attractions in Binizhou were put forward to ensure the development of regional tourism in Binzhou City.The results show that the spatial distribution of tourist attractions graded AAA and above in Binizhou City is uniform.The β index and γ index are respectively 1.36 and 0.47,and the average accessibility is 45.26 km.Binzhou has a weak tourism traffic connection and the accessibility is not high.The compactness index C of the tourist attractions is 0.74,and the compactness degree of the tourist attractions in Binizhou is above the average.
基金Supported by the Soft Scientific Research Planning Project of Binzhou City(2014RKX10)Scientific and Technological Development Planning Project of Binzhou City(2013ZC1606)
文摘Relationships between environmental pollution and economic development in Binzhou during 2001- 2013 were studied through an Environmental Kuznets Curve( EKC). The results showed that with the increase of GDP per capita,the emissions of industrial wastewater,COD and ammonia nitrogen in Binzhou City increased at first and then decreased during 2001- 2013,showing inverted-U-shaped curves where turning points appeared in the middle; the emission of domestic sewage showed an upward trend,and a turning point would not appear in a short term; the emissions of domestic COD and ammonia nitrogen dropped firstly and then rose gradually,showing U-shaped curves,and they would not decrease in a short time. The turning points of industrial wastewater,COD and ammonia were at( 4. 29,14 550),( 2. 46,44 803) and( 2. 27,2 708) respectively; domestic sewage had no turning point,and domestic COD and ammonia nitrogen would not reach the turning points in a short term.
基金Supported by the Science and Technology Development Planning Project of Binzhou City,Shandong Province(2014ZC0331)
文摘Wind speed,temperature,relative humidity and TSP concentration at three intersections in Binzhou City were monitored,and the relationships of TSP concentration with wind speed,temperature,relative humidity and traffic flow at the three intersections in Binzhou City were analyzed by using SPSS.The results show that traffic flow was the main factor affecting TSP concentration of road traffic in Binzhou City.
文摘Firstly,the current situation of economic growth in Binzhou economic and technological development zone was analyzed firstly,and then existing problems were pointed out. What's more,the goals and strategic orientation of economic development in the zone during the " 13^(th) FiveYear Plan" period were determined,and several countermeasures and proposals were put forward.
基金Supported by Scientific Research Foundation of Binzhou University(BZXYL1805)
文摘Taking into account the regional carrying capacity,the population capacity and optimum population of Binzhou City from 2007 to 2017 under certain economic,resource and environmental conditions were calculated based on PEER model.The results show that the population capacity of Binzhou City during 2007-2017 ranged from 6.03 million to 6.43 million,and ecological optimum population was between 5.05 million and 5.34 million.The actual population of the city was between 3.74 million and 3.94 million.The impact of the "two-child" policy on population growth was small,and there was still room for population growth.The population pressure index was greater than 0.7 and less than 1,showing that economic and resource population carrying capacity had certain surplus but were still not optimistic.Environmental pressure index was relatively high,and population carrying capacity was low.
基金Sponsored by 2018 Dual Service Project of Binzhou University(BZXYSFW201808)
文摘Under the macro-background of “all-for-one” tourism,this study analyzes the related concepts and characteristics of inquiry-based learning tourism to understand the significance and role of developing inquiry-based learning tourism in China.With Binzhou as the object of study,this study also explores the development of inquiry-based learning tourism products from the aspects of the product development idea,level,framework and marketing,with a view to providing references for implementing inquiry-based learning tourism activities in other regions.
基金Supported by National College Students’Innovation and Entrepreneurship Training Program(201610449062)Research Fund Project of Binzhou University(BZXYG1308)
文摘Based on the relevant statistics on the agricultural non-point source pollution in Binzhou City,we studied the spatio-temporal variation in agricultural non-point source nitrogen pollution and phosphorus pollution in Binzhou City during 2008-2015. The results showed that the agricultural non-point source nitrogen pollution and phosphorus pollution in Binzhou City changed from 114400 t and 28800 t in 2008 to110600 t and 24400 t in 2015,respectively; for the non-point source nitrogen pollution sources,the proportion of chemical fertilizer,manure and domestic sewage changed from 80. 41%,10. 47% and 9. 13% in 2008 to 82. 94%,4. 77% and 12. 29% in 2015,respectively; for the non-point source phosphorus pollution sources,the proportion of chemical fertilizer,manure and domestic sewage changed from 89. 29%,8. 32% and 2. 39% in 2008 to 91. 6%,4. 78% and 3. 62% in 2015,respectively; in 2015,the non-point source nitrogen pollution was most serious in Wudi County and Huimin County and least serious in Zhanhua County; the non-point source phosphorus pollution was most serious in Zouping County and least serious in Wudi County.
基金Sponsored by Social Science Planning Key Research Project of Binzhou,Shandong Province(16-SKYB-6,16-SKYB-15)
文摘The coordinated development of urban and rural areas is an inevitable trend to break the dual urban-rural structure and promote the coordinated development of urban and rural areas.The statistical data on the overall economic and social development of urban and rural areas in Binzhou from 2006 to 2015 were studied and analyzed,and an urban and rural integrated evaluation index system was established,which was evaluated using principal component analysis.The results showed that the overall level of urban and rural integrated development in Binzhou City is low,but has been rising in recent years;and the urbanrural dual structure gradually weakens.
基金Natural Science Foundation of Shandong Province,China(ZR2018 PD002).
文摘To evaluate the levels of heavy metal pollution and risks in consumption of aquatic products from a market in Binzhou,the contents of Cu,Zn,Cd,Cr and Pb in the edible part of eight aquatic species such as Ctenopharyngodon idellus were determined by inductively coupled plasma mass spectrometry.The results show that the levels of the five elements differed among different species of aquatic products.The ability of bivalves to accumulate heavy metals was significantly higher than that of fish.Compared with relevant food hygiene standards,there was a certain excess of Cr in Ruditapes philippinarum and Penaeus vannamei.The results of human exposure risk assessment show that the THQ values of the heavy metals in the eight aquatic species were all less than 1,indicating that the consumption of these aquatic products had no potential non-carcinogenic risks.
文摘As gradual improvement of living environment and indoor decoration form diversification,the indoor air pollution has become the"invisible killer"harming human health,and has been listed as one of ten big threats to human health by the World Health Organization,which also became one of hot issues concerned by countries all over the world.In this paper,through the determination of formaldehyde in some houses of Binzhou,the release of formaldehyde with the increase of time was explored;change of formaldehyde in the same residence in different functional areas was analyzed;the influence of the temperature,humidity and plant to formaldehyde content was also analyzed.
文摘According to meteorological data at Binzhou Meteorological Station during 1981-2010,basic climate characteristics of meteorological factors(such as temperature,relative humidity and wind velocity,etc.)related to human comfort are analyzed,and temporal-spatial distribution characteristics of human comfort in Binzhou City are studied.Then,human comfort of tourism in Binzhou City is evaluated.The impacts of each meteorological factor on comfort in different seasons and change tendency of comfort are discussed,and the optimal tourism time in Binzhou City is analyzed.
基金Supported by Youth Fund Project of Natural Science Foundation of Shandong Province(ZR2014CQ009)Science and Technology Development Program of Binzhou City(2013GG0304)Pig Industry Innovation Team of Agricultural Industry Research System of Shandong Province(SDAIT-08-17)
文摘To fully understand swine streptococcosis in Binzhou and surrounding areas,we studied its incidence rate and incidence characteristics in 2013,in order to put forward constructive suggestions for scientific prevention and control of swine streptococcosis. Isolation and purification,biochemical and molecular biology identification and drug susceptibility test of Streptococcus suis were carried out,and mixed infection of S. suis with classical swine fever virus,pseudorabies virus and porcine circovirus virus was statistically analyzed. The results showed that 46 strains of S. suis were screened,and the positive rate was approximately 24. 9%,with high degree of resistance and multiple resistances. S. suis had different degrees of mixed infection with classical swine fever virus,pseudorabies virus and porcine circovirus virus,and the total mixed infection rate was 58. 7%.
基金Supported by Soft Science Research Plan Item of Binzhou City,China(2014RKX10)Science and Technology Development Plan Item of Binzhou City,China(2013ZC1606)
文摘Sustainable utilization state of water resource in Binzhou City was studied by ecological footprint.Results showed that the per capita ecological footprints of living water,producing water and ecological water were respectively 0.071,1.105 and 0.032 hm2/person.The total per capita ecological footprint was 1.208 hm2/person,and the total per capita ecological carrying capacity was 1.357 hm2/person.The per capita ecological surplus of water resource was 0.149 8 hm2/person.It illustrated that the development and utilization of water resource in Binzhou City were overall sustainable.
文摘[Objective]The research aimed to analyze precipitation change and agricultural drought and flood degrees during crop growth season in Binzhou.[Method]Based on monthly rainfall and average temperature data at Binzhou meteorological observatory during March-November of1981-2010,by using linear regression,climatic tendency rate and dry-wet coefficient,precipitation change and agricultural drought and flood degrees during crop growth season of the past 30 years in Binzhou were analyzed from natural precipitation tendency change and satisfaction degree of agricultural water demand during crop growth season.[Result]In the past 30 years,precipitation during growth season in Binzhou presented increasing tendency.Spring,summer and autumn precipitation all increased somewhat,especially summer precipitation.Monthly average rainfall distribution was very uneven,and rainfall in July and August was more.In the past 30 years,average dry-wet coefficient K value during crop growth season in Binzhou was 0.60,it overall belonged to moderate drought climate type,and occurrence frequency of drought was 97%.It belonged to serious drought climate type in spring and autumn and light drought climate type in summer.Dry-wet coefficient presented rising tendency,illustrating that climate was developing toward wet direction.Seen from mean over the years,except humid in July,it was over light drought in other months.[Conclusion]Climate was overall arid during crop growth season in Binzhou,but precipitation somewhat increased in the past 30 years.Therefore,we suggested that artificial rainfall work should be enhanced.
基金Supported by Soft Scientific Research Planning Project of Binzhou City(2016BRK06)Key Research Project of Social Science Planning of Binzhou City(16-SKYB-6,16-SKYB-15)
文摘Using entropy method and the urban ecological environment suitability index method,22 indicators were chosen from economic system,social system,and environmental system to measure and evaluate the suitability of urban ecological environment in Binzhou City during 2008-2015. The results showed that the suitability of urban ecological environment in Binzhou City was high overall from 2008 to 2015. It was at grade II in 2008 and 2009 and at grade I in the other years. The development level of economic and environmental systems was relatively high,and some indicators of social system had certain shortcomings.
