基于RS的平顶山市土地利用动态变化研究

平顶山市作为典型的资源型城市(以煤炭、耕地发展起来),是人地关系作用最强烈的区域之一,也是土地利用发生急剧变化且具有特色的区域。为此,基于平顶山市城区1994年TM和2002年ETM+两个时段的遥感图像,获取不同时期的土地利用信息,求取土地利用转移矩阵,分析土地利用的时空变化特征和变化规律,并从土地利用面积变化、动态度、耗减度、开发度等方面对土地利用变化进行分析。研究发现:煤炭开采、城市发展对平顶山市土地利用变化具有重要的影响;8年间,该地区耕地、林地大幅减少,城市用地、工矿用地、荒草地大幅增加;减少的耕地主要转化为荒草地、工矿用地、城市用地,减少的林地主要转化为荒草地;受北部矿区条件的影响,市区发展主要朝东、西、南三个方向。

Study on the dynamic change of land use of Pingdingshan city based on RS

As a representative resource-typed city,Pingdingshan city is one of the most strongly areas that the human and the land interact each other.It is also the most characteristic area that land use changed sharply.Therefore,based on the RS images of TM and ETM of the downtown in 1994 and in 2002,the land use information in different period is extracted,land use transformation matrix is calculated,and the spatial-temporal character and the changed law in the land use is revealed.At the same time,based on land use area change,dynamic degree,exhaust degree,exploitation degree,the land use change is studied.The study result indicates that the coal mining and the development have done an important influence on the land use change of pingdingshan city.During last 8 years,the area of cultivated land and the wood land had decreased greatly,however the urban land,the industry and mining land,and the weed land had increased greatly.The decreased cultivated land were mostly translated to urban land,industry and mining land,and weed land,and the decreased wood land was mostly translated to weed land.Because of the limitation of north mining area condition,the city expanded to the east,west and north.