【摘要】 河北坝上地区处于农牧交错带,是中国北方生态脆弱地带中最为脆弱的地段,土地退化现象比较严重。利用Landsat TM影像,对河北坝上地区1986年和2000年的土地退化,包括土地沙化、盐渍化和水土流失状况进行了分析,根据土地退化的成因,提出了退化土地的生态恢复重建的措施。更多还原

【Abstract】 Bashang region of Hebei province lies in the ecotone of agriculture and animal husbandry and it is the most fragile region in North China,land degradation is very serous.Using Landsat TM images,land degradation of Bashang region during 1986 and 2000,including sandy desertification,salinization and water erosion are analyzed.Based on the causes of land degradation,ecological reconstruction measures of degraded land are put forward.更多还原