松嫩平原自然地理条件空间分区及土地利用变化分析

Natural Geography Regionalization and Land Use Changes Analysis in Songnen Plain

以松嫩平原为研究区域,利用自然地理条件分区方法,结合自然地理条件数据和三期的TM影像数据对松嫩平原的土地利用和覆被变化进行分析.结果表明,从各分区内每种土地利用类型的变化上来看,松嫩平原的耕地、建筑用地和未利用地在逐年增加,其中耕地的增加幅度在降低.湿地、林地、草地、水域总体呈减少趋势.湿地面积持续减少,并且减少的幅度和速度都是呈增加趋势.各区域的表现不同,受人类活动影响严重.

Using the natural geographical regionalization method, combined with the natural geography datas and the TM remote sensing image, the land using and cover changing of the songnen plain are studied in this paper. The results showed the regionalization of each land use type changes, the cultivated land, construction land and unused land are increased year by year, the growth of cultivated land is in the lower. Wetlands, forest, grassland, water area overall showed a trend of decreasing. The wetlands is declining, and the amplitude and speed of reducing is increased. The research results of various regions is different, which is affected by human activities.