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环京津贫困带经济发展格局时空演变研究 被引量:3
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作者 范轶芳 侯景新 赵弘 《现代财经(天津财经大学学报)》 CSSCI 北大核心 2016年第7期18-27,共10页
在国家新一轮扶贫攻坚和京津冀协同发展战略下,环京津贫困带呈现双重热点特征,深化研究其经济时空演变具有重要的实践意义和理论意义。在研究环京津贫困带范围基础上,通过空间自相关分析法研究该地区的经济发展时空格局演变,发现在波动... 在国家新一轮扶贫攻坚和京津冀协同发展战略下,环京津贫困带呈现双重热点特征,深化研究其经济时空演变具有重要的实践意义和理论意义。在研究环京津贫困带范围基础上,通过空间自相关分析法研究该地区的经济发展时空格局演变,发现在波动中趋稳,2007年以后呈现出明显的经济空间集聚特征,演化为空间同质性发展为主异质性发展为辅的格局。通过对比法和城市引力模型研究该地区与京津冀的时空经济格局演变,发现绝对差距一直增大,相对差异总体在缩小,城市间引力值相对较小且与县域经济发展呈正相关,但随时间推移不断增大。最后,从空间经济角度提出政策建议。 展开更多
关键词 环京津贫困带 经济时空演变 空间自相关分析 城市引力模型
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The Temporal and Spatial Evolution Characteristics Analysis of Jiangsu Tourism Economy
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作者 张学文 丁正山 《Journal of Landscape Research》 2010年第2期82-86,共5页
[Objective] The paper aimed to reflect the spatial pattern and temporal and spatial evolution characteristics, the differences between inter-regional tourism economy was measured from the quality aspect, which provide... [Objective] The paper aimed to reflect the spatial pattern and temporal and spatial evolution characteristics, the differences between inter-regional tourism economy was measured from the quality aspect, which provided a reference for the local governments in the future tourism development. [Method] Using the location entropy methods, three time periods side of tourism-related date of 2000, 2005, 2007 were selected, from the angle of the spatial pattern and the evolution of the differences within the different scales, the spatial and temporal evolution characteristics of the economic development level of Jiangsu were analysed. [Result] The results showed that from the aspect of spatial evolution pattern, as time goes on, the economic development of Jiangsu tourism has experienced morphological evolution of concentration- dispersion decrease-stability; when it comes to the development of the tourism economy, in recent years, the overall gap between the tourism economy in Jiangsu did not widen, the gap mainly led by the region one after another. According to their volatility, it will be divided into four categories: A Stable type (Wuxi, Xuzhou, Lianyungang and Taizhou), B Increasing type (Huai’an), C Fluctuations type (Nanjing, Changzhou, Suzhou and Yangzhou) and D Depression type (Nantong, Yancheng, Zhenjiang and Suqian). [Conclusion] Location entropy was quoted into tourism economic analysis, the method was simple and easy to understand, the result was accurate and convincing, which provided a reference for travel economic development and investment decision-making of Jiangsu. 展开更多
关键词 Location entropy Tourist economy Temporal and Spatial Evolution Characteristics Jiangsu
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Climatology of Guinea: Study of Climate Variability in N'zerekore
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作者 Rene Tato Loua Maoro Beavogui +3 位作者 Hassan Bencherif Alpha Boubacar Barry Zoumana Bamba Christine Amory Mazodier 《Journal of Agricultural Science and Technology(A)》 2017年第4期215-233,共19页
N'zerekore is a geographical region of Guinea, which houses a weather observatory located at longitude 8.8°, latitude 7.7° and altitude 475 m. This region is of major socio-economic interest for the Country... N'zerekore is a geographical region of Guinea, which houses a weather observatory located at longitude 8.8°, latitude 7.7° and altitude 475 m. This region is of major socio-economic interest for the Country. The climatological study of this region shows the variability of each parameter. The objective of this study was to analyze meteorological parameters trends and to assess the space-time evolution of some agro-climatic risks related to the main trends observed in the meteorological parameters regime of this region. In this study, programming tools were used for processing and analyzing meteorological parameters data, including temperatures, rains, wind, evaporation and storms measured in this observatory from 1931 to 2014. The interannual, annual and daily variations of these parameters were obtained, as well as temperature, precipitation anomalies and agroclimatic indexes trends. The analyzing of these variations explained that September is the rainiest months, and the year 1932, 1957 and 1970 are normal, rainy and dry year, respectively. The evaporation increased since 1971 from January to March and November to December. A positive temperature anomaly was observed since 1973 with the maximum 26-33 ℃ and the minimum 16-21 ℃. A dominant westerly wind with a speed of 2.6 m/s was determined. Agro-climatic parameters in N'zerekore have high variability. From 1931 to 2014, three major periods can be distinguished: a wet period from 1931 to 1977, a dry period from 1978 to 1994 and rainfall variability from 1995 to 2014. The trend of these parameters explains the impact of climate change in this part of the world. This is exacerbated by human activity (deforestation), thus mitigation measures are necessary. It would be useful to extend this study throughout the country. 展开更多
关键词 Climate change N'zerekore agroclimatic index.
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