基于RS和GIS的江西省生态系统格局和空间结构动态变化研究

Study on Dynamic Changes of Ecosystem Patterns and Spatial Structure in Jiangxi Province Based on RS and GIS

利用多源多时相遥感数据,在RS和GIS技术的支持下,按照生态学的分类方法对地表覆盖数据进行解译,从生态系统的景观格局、空间结构变化趋势和变化速率等方面进行深入分析。研究结果表明:1)2000-2010年江西省主要生态系统类型为森林生态系统和农田生态系统;2)研究期内,城镇生态系统面积增加明显,而森林、湿地和农田生态系统面积减少;3)生态系统转换特征主要表现为农田生态系统转为城镇生态系统;4)生态系统的波动性前5年大于后5年,南昌市和新余市是江西省生态系统变化的热点区域。

With the support of RS and GIS,using multi-source and multi-temporal RS data achieved the land cover data interpretation according to the method of Ecology Classes. In addition,some parameters and factors were deeply analyzed,for instance,landscape pattern and the variation tendency and rate of change in spatial structures. Preliminary results showed that： 1） the main land cover were forest ecosystem and farmland ecosystem in Jiangxi province from 2000 to 2010. 2） Urban ecosystem area increased significantly but forest,wetlands and farmland ecosystem area decreased. 3） Conversion of farmland ecosystem into urban ecosystem was the main conversion characteristics of ecosystem. 4） Volatility of ecosystems in earlier stage was greater than later stage,and the most obvious regions,were Nanchang and Xinyu in Jiangxi Province.