Migration plays an increasing role in China＇s economy since mobility rose and economic restructuring has proceeded during the last three decades. Given the background of most studies focusing on migration in a partic...Migration plays an increasing role in China＇s economy since mobility rose and economic restructuring has proceeded during the last three decades. Given the background of most studies focusing on migration in a particular period, there is a critical need to analyze the spatial-temporal patterns of migration. Using bicomponent trend mapping technique and interprovincial migration data during the periods 1985-1990, 1990-1995, 1995-2000, 2000- 2005, and 2005-2010 we analyze net-, in-, out-migration intensity, and their changes over time in this study. Strong spatial variations in migration intensity were found in China＇s interprovincial migration, and substantial increase in migration intensity was also detected in eastern China during 1985-2010. Eight key destinations are mostly located within the three rapidly growing economic zones of eastern China （Pearl River Delta, Yangtze River Delta and Beijing-Tianjin-Hebei Metropolitan Region）, and they are classified into three types： mature, emerging, and fluctuant origins, while most key origins are relatively undeveloped central and western provinces, which are exactly in accordance with China＇s economic development patterns. The results of bicomponent trend mapping indicate that, in a sense, the migration in the south was more active than the north over the last three decades. The result shows the new changing features of spatial-temporal patterns of China＇s interprovincial migration that Fan and Chen did not find out in their research. A series of social-economic changes including rural transformation, balanced regional development, and labor market changes should be paid more attention to explore China＇s future interprovincial migration.展开更多
基于Web of Science平台相关文献数据,利用CiteSpace与空间分析方法探讨低碳乡村的研究区域时空分布格局,识别低碳乡村研究演进和热点趋势,结论如下:①全球范围内乡村碳排放研究时间连续、跨度大,发达国家起步先于发展中国家,并形成以...基于Web of Science平台相关文献数据,利用CiteSpace与空间分析方法探讨低碳乡村的研究区域时空分布格局,识别低碳乡村研究演进和热点趋势,结论如下:①全球范围内乡村碳排放研究时间连续、跨度大,发达国家起步先于发展中国家,并形成以中美为两极的地理分异特征;②乡村碳排放围绕环境生态科学与农学等多学科交叉,呈现主题拓展与量化模型精度提升并进趋势;③乡村碳排放的五大研究主题为耕作方式、生物燃料与土地利用变化、农业—食物—环境系统、可持续饮食和乡村温室气体的测算与产业管理;④中国存在重乡村旅游、轻饮食结构及温室气体测算中内涵界定范围局限且精细度低等问题。基于上述结论,结合我国“一带一路”、乡村转型和乡村振兴等政策,从乡村碳排放跨区域协调、碳税与环境税的试点实践、乡村产业智能化管理体系构建、国民饮食结构调整等方面对未来研究进行展望,以期为我国低碳乡村发展提供参考。展开更多
基金National Basic Research Program of China （973 Program）, No.2012CB95570001 Key Research Program of the Chinese Academy of Sciences, No.KZZD-EW-06-04+1 种基金 National Natural Science Foundation of China, No.41301121 National Key Technologies R＆D Program of China, No.2012BAJ15B02
文摘Migration plays an increasing role in China＇s economy since mobility rose and economic restructuring has proceeded during the last three decades. Given the background of most studies focusing on migration in a particular period, there is a critical need to analyze the spatial-temporal patterns of migration. Using bicomponent trend mapping technique and interprovincial migration data during the periods 1985-1990, 1990-1995, 1995-2000, 2000- 2005, and 2005-2010 we analyze net-, in-, out-migration intensity, and their changes over time in this study. Strong spatial variations in migration intensity were found in China＇s interprovincial migration, and substantial increase in migration intensity was also detected in eastern China during 1985-2010. Eight key destinations are mostly located within the three rapidly growing economic zones of eastern China （Pearl River Delta, Yangtze River Delta and Beijing-Tianjin-Hebei Metropolitan Region）, and they are classified into three types： mature, emerging, and fluctuant origins, while most key origins are relatively undeveloped central and western provinces, which are exactly in accordance with China＇s economic development patterns. The results of bicomponent trend mapping indicate that, in a sense, the migration in the south was more active than the north over the last three decades. The result shows the new changing features of spatial-temporal patterns of China＇s interprovincial migration that Fan and Chen did not find out in their research. A series of social-economic changes including rural transformation, balanced regional development, and labor market changes should be paid more attention to explore China＇s future interprovincial migration.
文摘基于Web of Science平台相关文献数据,利用CiteSpace与空间分析方法探讨低碳乡村的研究区域时空分布格局,识别低碳乡村研究演进和热点趋势,结论如下:①全球范围内乡村碳排放研究时间连续、跨度大,发达国家起步先于发展中国家,并形成以中美为两极的地理分异特征;②乡村碳排放围绕环境生态科学与农学等多学科交叉,呈现主题拓展与量化模型精度提升并进趋势;③乡村碳排放的五大研究主题为耕作方式、生物燃料与土地利用变化、农业—食物—环境系统、可持续饮食和乡村温室气体的测算与产业管理;④中国存在重乡村旅游、轻饮食结构及温室气体测算中内涵界定范围局限且精细度低等问题。基于上述结论,结合我国“一带一路”、乡村转型和乡村振兴等政策,从乡村碳排放跨区域协调、碳税与环境税的试点实践、乡村产业智能化管理体系构建、国民饮食结构调整等方面对未来研究进行展望,以期为我国低碳乡村发展提供参考。
