【摘要】 石漠化是在喀斯特脆弱的生态环境下,不合理的社会经济活动的产物。利用贵州省遥感影像,在3S平台上获取了研究区喀斯特石漠图,分析了贵州省喀斯特石漠化现状。结果表明,全省喀斯特面积11.3158万km2,现有石漠化土地面积达4.1091万km2,约占全省喀斯特面积的36.3%,为西南地区石漠化最为严重的省份。空间分布上,贵州石漠化存在西部重、东部轻、南部重、北部较轻的宏观格局;在2000-2005年,部分潜在、轻度石漠化经过治理转变成了无石漠化,但石漠化总的面积仍在增加,新增总量为5172km2,平均年增长率为2.88%,发展速度较快。更多还原

【Abstract】 Rocky desertification is the result of unreasonable human activities on the fragile karst environment.The present state of rocky desertification in Guizhou province is analyzed according to remote sensing image and karst rocky desertification map is obtained through "3S" platform.The result shows there is 41 091 km2 rocky desertification land out of the total 113 158km2 karst area in Guizhou province,and it is the most severe rocky desertification area in Southwest China.The spatial distribution has the feature of more severe in west and south Guizhou but lighter in east and north area.By assaying the data of present and 2000 year’s,it is found that the annual rate of karst rocky desertification change in Guizhou province is 2.88 percent,rocky desertification has continuously broaden and become more and more severe in the last five years.更多还原