江西省赣南地区土地利用动态分析  

Dynamic Analysis of Land Use in Ganzhou,Jiangxi Province

作　　者：张少伟[1] 杨勤科[2,1] 任宗萍[3] 刘红艳[3] 李俊[3] 陆广勇[1] 

机构地区：[1]中国科学院水利部水土保持研究所,陕西杨凌712100 [2]西北大学城市与环境学院,西安710069 [3]西北农林科技大学资源环境学院,陕西杨凌712100

出　　处：《水土保持研究》2011年第2期53-56,65,共5页Research of Soil and Water Conservation

基　　金：水土保持措施调控鄱阳湖径流泥沙研究技术研究(区域侵蚀模型研究)(200801066)

摘　　要：使用江西省赣南地区1980年、1998年、2008年三期遥感影像,运用计算机分类方法,配合实地考察和文字资料提取了改革开放初期、20世纪末和当前的土地利用图。将数字高程模型(DEM)作为地形表达数据基础,对改革开放30年来赣南地区的土地利用分布、变化和地形格局进行分析,并根据水利部土壤侵蚀分级标准(SL190-2007)进行了土壤侵蚀评价。结果表明:赣南地区30年间居民地、果园增长快速,土地综合利用程度不断提高;草地大量转化为林地类型,提高了植被覆盖度;耕地在平地上的变化非常剧烈,陡坡耕地减少,耕地总量有所减少。草地向林地的转化在各种地形上均有发生,但25°附近的低山丘陵地区最为强烈。随着土地利用的变化,赣南地区的土壤侵蚀程度得到控制,2008年中度及以上侵蚀面积小于14%。Based on the remote sensing images in 1980,1998 and 2008,land use information of Ganzhou in Jiangxi Province was firstly interpreted through method of computer-assistant classification in the paper.The information represents circumstances corresponding to the three periods： the initial stage of the Reform Opens,the end of 20th century and the present.With Digital Elevation Model（10 m resolution） applied to represent terrain,then,land use,land use change and its terrain pattern in Ganzhou during the 30 years were analyzed,meanwhile,soil erosion was also evaluated via Standards For Classification and Gradation of Soil Erosion（SL190-2007）.Results show that the rapid growth of residential and garden land enhanced the land use intensity.Vegetation coverage increased quickly since large area changed from grass land to forest.This transformation was intense,and its extreme case appeared in the place where slope was around 20 degrees,i.e.low mountain and hillock.Farmland with steep slope decreased,whereas,farmland in flat ground increased accordingly.Consequently,the total quantity of cultivated land reduced a little.Fortunately,with the land use changing,the soil erosion intensity was under control,the area with the soil erosion grade of moderate and above was less than 14% in 2008.

关 键 词：遥感 土地利用 地形格局 土壤侵蚀 

分 类 号：F301.24[经济管理—产业经济] TP79[自动化与计算机技术—检测技术与自动化装置]