基于转移矩阵的上海市土地利用变化分析

Analysis of Land Use Change in Shanghai based on Transfer Matrix

土地利用的变化对水土流失有着重要的影响,近15年来经济发展迅速,土地利用结构变化明显,同时造成了一些环境问题如水土流失,虽然较轻微但也会在局地影响经济发展。因此,研究上海市的土地利用变化状况对水土保持工作有着十分重要的意义。经研究发现,上海市近15年来土地利用变化情况如下:2000—2015年,研究区总体上耕地、水域、未利用土地和草地面积呈减少趋势,而城乡工矿居民用地、林地面积呈增加趋势,水域面积变化不明显。土地利用类型变化主要为耕地、草地与未利用土地变化为城乡工矿居民用地与林地。

The change of land use has an important influence on soil erosion. In recent 15 years,the economic development of Shanghai is rapid and the structure of land use changes obviously. At the same time,some environmental problems,such as soil and water loss,will be slightly affected by the local economic development. Therefore,the study of land use change in Shanghai is of great significance for soil and water conservation. It is found that the changes of land use in Shanghai in the last 15 years are as follows：from 2000 to 2015,the area of cultivated land,water,unused land and grassland is decreasing,while the area of urban and rural industrial and mining land and forest land is increasing,and the change of water area is not obvious.The change of land use types is mainly the change of farmland,grassland and unused land into urban and rural industrial and mining residential land and woodland.