利用转移矩阵模型研究江苏省长江岸线变化

Research on the Yangtze River Shoreline Changes in Jiangsu Province Using Transfer Matrix Model

开展长江生态环境监测,推动长江经济带发展是关系国家发展全局的重大战略,是加快推进生态文明建设的客观需要。以2015-2021年江苏省沿江2 km岸线范围内土地利用数据为研究对象,利用转移矩阵模型计算研究区域内各时间节点的转移矩阵表,分析生态、生活和生产空间用地的转入转出以及增减情况;再采用高斯-赛德尔迭代法绘制三生空间流转的桑基图,对江苏省长江岸线变化进行定量分析,为长江经济带(江苏段)的生态监测提供技术支持。

Carrying out the ecological environment monitoring of the Yangtze River and promoting the development of the Yangtze River Economic Belt is a major strategy related to the overall development of the country and an objective need to accelerate the construction of ecological civilization.Taking the land-use data within two kilometers of shoreline along the Yangtze River in Jiangsu Province from 2015 to 2021 as the research object,we used the transfer matrix model to calculate the transfer matrix tables on each time node in the research area,and analyzed the transfer in and transfer out,increase and decrease of land for ecological space,living space and production space.Then,we used the Gauss-Seidel method to draw the Sankey diagram of ecological-living-productive space circulation,to quantitatively analyze the Yangtze River shoreline change in Jiangsu Province,and provide technical support for the ecological monitoring in the Yangtze River Economic Belt(Jiangsu Section).