Land Degradation Evaluation in North Hebei Province Based on Remote Sensing and GIS  

作　　者：Yuan Jinguo Liu Jinsong Wang Wei Niu Zheng 

机构地区：[1]State Key Laboratory of Remote Sensing Science, Institute of Remote Sensing Applications, Chinese Academy of Sciences, Beijing 100101, China [2]College of Resources and Environmental Sciences, Hebe[Normal University, Shijiazhuang 050016, China

出　　处：《Chinese Journal of Population,Resources and Environment》2006年第3期28-36,共9页中国人口·资源与环境（英文版）

基　　金：The authors would like to greatly thank the National Natural Science Foundation of China(No.40171001 and No.40571117);the grant of the Knowledge Innovation Program of the Chinese Academy of Sciences(approved # KZCX3-SW-338);National High Technology Research and Development Program of China(No:2003AA131170)which founded this research.

摘　　要：Land degradation is one of the serious environmental problems that can lead to poverty, and is especially prominent in eco-fragile areas in developing countries and increases the risk of environmental safety. North Hebei Province belongs to an ecologically fragile region in North China, which has great impact on the eco-safety of Beijing and Tianjin. Using Landsat TM data and GIS, this paper evaluates land degradation in North Hebei province of China from the the 1960′s to 1987 and 2000. Land use/cover change pattern from 1987 to 2000, its regional difference and forest change characteristics will also be analyzed; soil erosion intensity and arable land suitability were also evaluated. Results revealed that land use/cover pattern in this study area did not change greatly from 1987 to 2000. The structure and function of regional land ecosystem was at a level of local improvement and integral deterioration. Land above medium soil erosion intensity reached 21 percent, which was also the area with a serious soil erosion and land degradation problem. Soil erosion and land degradation intensity of grassland was the biggest. For the present arable land, the proportion of high suitability was 13 percent.Land degradation is one of the serious environmental problems that can lead to poverty, and is especially prominent in eco-fragile areas in developing countries and increases the risk of environmental safety. North Hebei Province belongs to an ecologically fragile region in North China, which has great impact on the eco-safety of Beijing and Tianjin. Using Landsat TM data and GIS, this paper evaluates land degradation in North Hebei province of China from the the 1960＇s to 1987 and 2000. Land use/cover change pattern from 1987 to 2000, its regional difference and forest change characteristics will also be analyzed; soil erosion intensity and arable land suitability were also evaluated. Results revealed that land use/cover pattern in this study area did not change greatly from 1987 to 2000. The structure and function of regional land ecosystem was at a level of local improvement and integral deterioration. Land above medium soil erosion intensity reached 21 percent, which was also the area with a serious soil erosion and land degradation problem. Soil erosion and land degradation intensity of grassland was the biggest. For the present arable land, the proportion of high suitability was 13 percent.

关 键 词：land degradation North Hebei Province soil erosion intensity arable land suitability evaluation 

分 类 号：S15[农业科学—土壤学] X171[农业科学—农业基础科学]