With the intensi fed impact of human activities,most lakes have been severely disturbed and the lake ecosystem has been seriously damaged,which exerted a great impact on the living envi-ronment of human beings in the ...With the intensi fed impact of human activities,most lakes have been severely disturbed and the lake ecosystem has been seriously damaged,which exerted a great impact on the living envi-ronment of human beings in the lake basins.The health of the lake ecosystem has gradually become one of the hot issues in recent years.In this study,the water resources carrying capacity(WRCC)was used to reveal the chain rel ationship between human activities and water environ-ment in the economic dewelopment of the Dianchi Lake Basin in Kunming City of China during 2005-2015.Specifically,we chose 25 ewaluation indicators related to the water environment and socialeconomic activities,classified them into six subsystems,Le,the driwing force subsystem(D),the water resources si tuation and consumption subsystem(S),the water resources pressure subsystem(P),the water environmental situation subsystem(E),the response subsystem(R),and the management subsystem(M),and built a comprehensive assessment system-DSPERM frame-work model.Si mulated annealing-projection pursuit model which reflects the structure or feature of high-dimensional data was adopted to calculate the WRCC of the Dianchi Lake Basin during 2005-2015 by weighting each evaluation indicator and each subsystem of the DSPERM frame work model.The resuls show that the WRCC of the Dlanchi Lake Basin was in level II(medium carying capacity)from 2005 to 2012.Since 2013,the WRCC has been at level II(strong carying capacity),and from 2005 to 2015,it showed a gradual upward trend.The evaluation indicators of each subsystem varied greatly and exhibited different development trends.The indicators of the water resources pressure subsystem had the greatest impact on the WRCC,followed by the in-dicators of the water environmental si tuation subsystem and the water resources situation and consumption subsystem.We recommend that the DSPERM framework model and the simulated anneal ing-projection pursuit model constructed in this work can be used to analyze the dynamic changes of the WRCC over the years.They have the advantages of practicability and feasibilty,and can provide the basis for the scienti fic decision-making and comprehensive management of regional water environment planning.展开更多
Based on Kunming statistical yearbook and field survey data of agricultural non-point source pollution in counties or districts in the Dianchi Lake basin,previous and current situation of agricultural production and a...Based on Kunming statistical yearbook and field survey data of agricultural non-point source pollution in counties or districts in the Dianchi Lake basin,previous and current situation of agricultural production and agricultural non-point source pollution control in the Dianchi Lake basin were studied,and countermeasures and suggestions of comprehensive control of agricultural non-point source pollution in the basin were proposed.展开更多
With the enlarging scale and intensifying production of livestock and poultry breeding,the environment pollution becomes increasingly prominent in the Dianchi Lake Basin since 1990s.According to the survey of "Th...With the enlarging scale and intensifying production of livestock and poultry breeding,the environment pollution becomes increasingly prominent in the Dianchi Lake Basin since 1990s.According to the survey of "The First National Census of Pollution Sources",occurrence and discharge of pollutants in large-scale livestock and poultry farms in this region were first understood.The pollution characteristics of large-scale livestock and poultry breeding were also analyzed deeply.On this basis,the significance of pollution control programs for environment protection was investigated from aspects of pollution control policy,technology management and publicity.展开更多
With the advance of urbanization process and rapid growth of urban population,the construction land scale in Dianchi Lake basin increases at a sharp speed.Due to lack of reasonable scale control and space optimization...With the advance of urbanization process and rapid growth of urban population,the construction land scale in Dianchi Lake basin increases at a sharp speed.Due to lack of reasonable scale control and space optimization,many areas have the problem of blind growth in construction land.On the one hand,it results in deterioration of regional ecological environment.On the other,it poses hidden danger for sustainable land use in the basin.Therefore,in order to coordination of regional land use and ecological environment construction,this paper on the basis of the existing various zoning method,the natural ecological conditions and resources environment as the constraint conditions of regional ecological balance,puts forward the Dianchi lake watershed ecological constraint type classification method based on GIS,and discusses the evaluation unit division,index selection and handling technical issues.Through evaluating ecological constraints of Dianchi Lake basin,this study divided Dianchi Lake basin into extremely high,higher,high,medium and low ecological constraint zones.Finally,it came up with guiding and regulating measures for land use of each type of ecological constraint,in the hope of providing scientific basis for optimum allocation of land resources in Dianchi Lake basin.展开更多
[Objective]The research aimed to study control scheme for nonpoint source pollution in Dahe Reservoir water source protection area of Dianchi Lake basin. [Method]On the basis of the SPOT5 satellite remote sensing imag...[Objective]The research aimed to study control scheme for nonpoint source pollution in Dahe Reservoir water source protection area of Dianchi Lake basin. [Method]On the basis of the SPOT5 satellite remote sensing imagery in 2010 and field investigation of GPS record,ecological design for nonpoint source pollution control in Dahe Reservoir water source protection area of Dianchi Lake basin was conducted. Then,the effects of optimization measures were evaluated by the reductions of N and P outputs on different land-use types. [Result]Control functions of the water source protection area on soil erosion and the emissions of N,P and other pollutants would be promoted after optimization. The optimization measures had a significant effect for prevention and control of the non-point source pollution in the water source protection area. [Conclusion] The research provided scientific basis for promoting ecological construction of the small green basin in Dahe Reservoir water source protection area of Dianchi Lake basin.展开更多
Based on Kunming statistical yearbook and field survey data of agricultural non-point source pollution in counties or districts in the Dianchi Lake basin,advances in the history,current situation and control measures ...Based on Kunming statistical yearbook and field survey data of agricultural non-point source pollution in counties or districts in the Dianchi Lake basin,advances in the history,current situation and control measures of agricultural non-point source pollution in the basin were summarized to provide theoretical and technical support for the thorough improvement of present situation of water pollution in the basin.展开更多
With the control of point source pollution in Dianchi Lake basin, and the expansion of Kunming city, non-point source pollution has become the main source pollution of urban water environment and Dianchi Lake. To reve...With the control of point source pollution in Dianchi Lake basin, and the expansion of Kunming city, non-point source pollution has become the main source pollution of urban water environment and Dianchi Lake. To reveal the nitrogen pollution characteristics in watershed, this research selected key monitoring points and sections at Baoxiang river basin in rainy season which is the peak transported time of non-point source pollution, the nitrogen and hydrological indicators are monitored systematically. The different forms of nitrogen are analyzed, the pollution load of nitrogen are calculated and studied at cardinal sections; combined with the literature data, we compared the water nitrogen characteristics of Dianchi basin and Taihu basin, the main results are as follows:(1) In summer, water nitrogen form of Baoxiang river in the Caohe area is dominated by nitrate nitrogen, while in other areas it is dominated by ammonia nitrogen which is accounted for 31%-50% of total nitrogen;(2) The water pollution loads of Baoxiang river tended to increase from upstream to downstream, from June to August the total nitrogen pollution mainly comes from urban areas and the pollution load is 166.408 t;(3) In Dianchi Lake watershed and Taihu Lake watershed nitrogen concentration of inflow river is higher than that of the lake, nitrate nitrogen concentration between inflow river and lake shows a little difference, while ammonia nitrogen concentration of inflow river is higher than that of the lake. The results can provide the theoretical basis for nonpoint source pollution control and urban water environment planning and improvement in Dianchi Lake Basin.展开更多
基金This research was supported by the National Social Sciance Foundation of China(20&ZD091)the Sciance and Technology Department Project of Sichuan Province,China(21 RICX0358,2019JDJQ0006)the Social Science Planning Project of Sichuan Province,China(SC18B027).
文摘With the intensi fed impact of human activities,most lakes have been severely disturbed and the lake ecosystem has been seriously damaged,which exerted a great impact on the living envi-ronment of human beings in the lake basins.The health of the lake ecosystem has gradually become one of the hot issues in recent years.In this study,the water resources carrying capacity(WRCC)was used to reveal the chain rel ationship between human activities and water environ-ment in the economic dewelopment of the Dianchi Lake Basin in Kunming City of China during 2005-2015.Specifically,we chose 25 ewaluation indicators related to the water environment and socialeconomic activities,classified them into six subsystems,Le,the driwing force subsystem(D),the water resources si tuation and consumption subsystem(S),the water resources pressure subsystem(P),the water environmental situation subsystem(E),the response subsystem(R),and the management subsystem(M),and built a comprehensive assessment system-DSPERM frame-work model.Si mulated annealing-projection pursuit model which reflects the structure or feature of high-dimensional data was adopted to calculate the WRCC of the Dianchi Lake Basin during 2005-2015 by weighting each evaluation indicator and each subsystem of the DSPERM frame work model.The resuls show that the WRCC of the Dlanchi Lake Basin was in level II(medium carying capacity)from 2005 to 2012.Since 2013,the WRCC has been at level II(strong carying capacity),and from 2005 to 2015,it showed a gradual upward trend.The evaluation indicators of each subsystem varied greatly and exhibited different development trends.The indicators of the water resources pressure subsystem had the greatest impact on the WRCC,followed by the in-dicators of the water environmental si tuation subsystem and the water resources situation and consumption subsystem.We recommend that the DSPERM framework model and the simulated anneal ing-projection pursuit model constructed in this work can be used to analyze the dynamic changes of the WRCC over the years.They have the advantages of practicability and feasibilty,and can provide the basis for the scienti fic decision-making and comprehensive management of regional water environment planning.
基金Supported by Research on the Comprehensive Control Measures of Agricultural Non-point Source Pollution in the Dianchi Lake Basin Funded by Kunming Agricultural Bureau(2016JC01)Project of Yunnan Engineering Research Center for Urban Characteristic Agriculture(TSNY0201)+7 种基金Scientific Research Foundation of Yunnan Department of Education(2014Y390)Application Base Research Project for Young Scholars of Yunnan Province(2013FD040)Talent Introduction Project of Kunming University(YJL14005)Talent Introduction Foundation of Kunming University(YJL12010)Key Foundation of Kunming University(XJL12020)Scientific Research Project for Undergraduates of Kunming University(XJD16081)Research on the Ecology and Rational Distribution of Main Cultivars in Producing Areas of Raw Materials of China Tobacco in Yunnan ProvinceProject of Construction of the Dominant Key Subject(Ecology)in Universities and Colleges in Yunnan Province(05000511311)
文摘Based on Kunming statistical yearbook and field survey data of agricultural non-point source pollution in counties or districts in the Dianchi Lake basin,previous and current situation of agricultural production and agricultural non-point source pollution control in the Dianchi Lake basin were studied,and countermeasures and suggestions of comprehensive control of agricultural non-point source pollution in the basin were proposed.
基金funded by the National Water Pollution Control and Management Technology Major Projects (2008ZX07102)
文摘With the enlarging scale and intensifying production of livestock and poultry breeding,the environment pollution becomes increasingly prominent in the Dianchi Lake Basin since 1990s.According to the survey of "The First National Census of Pollution Sources",occurrence and discharge of pollutants in large-scale livestock and poultry farms in this region were first understood.The pollution characteristics of large-scale livestock and poultry breeding were also analyzed deeply.On this basis,the significance of pollution control programs for environment protection was investigated from aspects of pollution control policy,technology management and publicity.
基金Supported by Public Welfare Project of the Ministry of Land and Resources"Land Conservation Technology and Model for Typical Towns and Villages in Ecological Urban Areas"(201111014-4)
文摘With the advance of urbanization process and rapid growth of urban population,the construction land scale in Dianchi Lake basin increases at a sharp speed.Due to lack of reasonable scale control and space optimization,many areas have the problem of blind growth in construction land.On the one hand,it results in deterioration of regional ecological environment.On the other,it poses hidden danger for sustainable land use in the basin.Therefore,in order to coordination of regional land use and ecological environment construction,this paper on the basis of the existing various zoning method,the natural ecological conditions and resources environment as the constraint conditions of regional ecological balance,puts forward the Dianchi lake watershed ecological constraint type classification method based on GIS,and discusses the evaluation unit division,index selection and handling technical issues.Through evaluating ecological constraints of Dianchi Lake basin,this study divided Dianchi Lake basin into extremely high,higher,high,medium and low ecological constraint zones.Finally,it came up with guiding and regulating measures for land use of each type of ecological constraint,in the hope of providing scientific basis for optimum allocation of land resources in Dianchi Lake basin.
基金Supported by Science Technology Key Special Item of the National Water Pollution Control and Treatment,China (2009ZX07102-004)
文摘[Objective]The research aimed to study control scheme for nonpoint source pollution in Dahe Reservoir water source protection area of Dianchi Lake basin. [Method]On the basis of the SPOT5 satellite remote sensing imagery in 2010 and field investigation of GPS record,ecological design for nonpoint source pollution control in Dahe Reservoir water source protection area of Dianchi Lake basin was conducted. Then,the effects of optimization measures were evaluated by the reductions of N and P outputs on different land-use types. [Result]Control functions of the water source protection area on soil erosion and the emissions of N,P and other pollutants would be promoted after optimization. The optimization measures had a significant effect for prevention and control of the non-point source pollution in the water source protection area. [Conclusion] The research provided scientific basis for promoting ecological construction of the small green basin in Dahe Reservoir water source protection area of Dianchi Lake basin.
基金Supported by Research on the Comprehensive Control Measures of Agricultural Non-point Source Pollution in the Dianchi Lake Basin Funded by Kunming Agricultural Bureau(2016JC01)Project of Yunnan Engineering Research Center for Urban Characteristic Agriculture(TSNY0201)+4 种基金Scientific Research Foundation of Yunnan Department of Education(2014Y390)Application Base Research Project for Young Scholars of Yunnan Province(2013FD040)Talent Introduction Project of Kunming University(YJL14005),Talent Introduction Foundation of Kunming University(YJL12010),Key Foundation of Kunming University(XJL12020),Scientific Research Project for Undergraduates of Kunming University(XJD16081)Research on the Ecology and Rational Distribution of Main Cultivars in Producing Areas of Raw Materials of China Tobacco in Yunnan ProvinceProject of Construction of the Dominant Key Subject(Ecology)in Universities and Colleges in Yunnan Province(05000511311)
文摘Based on Kunming statistical yearbook and field survey data of agricultural non-point source pollution in counties or districts in the Dianchi Lake basin,advances in the history,current situation and control measures of agricultural non-point source pollution in the basin were summarized to provide theoretical and technical support for the thorough improvement of present situation of water pollution in the basin.
基金supported by the 2015 Science and Technology Project of Yunnan Province (Grant No. 2015FD075)Yunnan Normal University Scientific Research Training Fund Project (Grant No. ky2015-141)
文摘With the control of point source pollution in Dianchi Lake basin, and the expansion of Kunming city, non-point source pollution has become the main source pollution of urban water environment and Dianchi Lake. To reveal the nitrogen pollution characteristics in watershed, this research selected key monitoring points and sections at Baoxiang river basin in rainy season which is the peak transported time of non-point source pollution, the nitrogen and hydrological indicators are monitored systematically. The different forms of nitrogen are analyzed, the pollution load of nitrogen are calculated and studied at cardinal sections; combined with the literature data, we compared the water nitrogen characteristics of Dianchi basin and Taihu basin, the main results are as follows:(1) In summer, water nitrogen form of Baoxiang river in the Caohe area is dominated by nitrate nitrogen, while in other areas it is dominated by ammonia nitrogen which is accounted for 31%-50% of total nitrogen;(2) The water pollution loads of Baoxiang river tended to increase from upstream to downstream, from June to August the total nitrogen pollution mainly comes from urban areas and the pollution load is 166.408 t;(3) In Dianchi Lake watershed and Taihu Lake watershed nitrogen concentration of inflow river is higher than that of the lake, nitrate nitrogen concentration between inflow river and lake shows a little difference, while ammonia nitrogen concentration of inflow river is higher than that of the lake. The results can provide the theoretical basis for nonpoint source pollution control and urban water environment planning and improvement in Dianchi Lake Basin.
