Urban Expansion and Its Impact on the Land Use Pattern in Xishuangbanna since the Reform and Opening up of China

Remote Sensing

Guang Yang¹  Guizhou Wang¹  Lei Luo¹  Jian Liu²  Hui Cao³  Chao Fu³  Wanfeng Zhang⁴ 

[1] Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100094, China;International Ecosystem Management Partnership, United Nations Environment Programme, Beijing 100101, China;Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, 11A Datun Road, Chaoyang District, Beijing 100101, China;Technology and Engineering Center for Space Utilization, Chinese Academy of Sciences, Beijing 100094, China;

关键词: urban expansion;    radar graph;    landscape metrics;    urban-rural gradients;    the reform and opening up;   

DOI  :  10.3390/rs9020137

来源: DOAJ

【 摘 要 】

Since the Chinese government carried out the reform and opening up policy, Xishuangbanna Dai Autonomous Prefecture has experienced rapid urbanization and dramatic land use change. This research aims at analyzing urban expansion in Xishuangbanna and its impact on the land use pattern using combined methods, including radar graph, the gradient-direction method and landscape metrics. Seven land use maps from 1976 to 2015 were generated and analyzed, respectively. The results showed that urban and rubber expanded rapidly, while forest decreased during the last 40 years. The city proper, the county town of Menghai and the county town of Mengla showed the most significant and fastest urban expansion rates. In response to rapid urban expansion, land use types outside urban areas changed dramatically. In Jinghong and Mengla, urban areas were usually surrounded by paddy, shrub, rubber and forest in 1976, while most areas were dominated by rubber by 2015. With the development of Xishuangbanna, landscape diversity increased along urban-rural gradients, but decreased in some key urban areas. Urban expansion slightly reduced the connectivity of forest and increased agglomeration of rubber at the same time. Based on the analyses above, we moved forward to discuss the consequences of urban expansion, rubber plantations and land fragmentation.

【 授权许可】

Unknown