安顺市喀斯特石漠化区土地利用结构研究

A Research on the Land Use Structure in Rocky Desertification Area in Anshun City

以典型喀斯特区贵州安顺市为研究对象,以高分辨率遥感影像数据为数据源,解译出研究区石漠化和土地利用分布图,研究安顺市石漠化区土地利用结构。结果发现:安顺市石漠化和土地利用类型相关性明显,石漠化只发生在旱地、有林地、灌木林地等六种土地利用类型中,草地、灌木林地和疏林地石漠化发生率较高。安顺发生石漠化的主要土地利用类型是灌木林地、未利用地和草地,其石漠化面积占整个安顺市石漠化面积比例近65.6%,其强度以上石漠化面积占总面积的79.9%。石漠化治理工程应充分考虑石漠化发生的不同土地利用结构,合理地布设防护林、经济林和草地建设工程。

Using high resolution remote sensing image data as the information source, the paper takes typical karst areas Anshun city of Guizhou as a research object, setting up the karst rocky desertification databases and land use maps of Anshun, to study structure of its land use in karst rocky desertification area. The results shows that rocky desertification only occurs in dry land, woodland, shrub land and so on the six types of land use, based on the significantly correlation between land use and rocky desertification. Grassland, shrub land and woodland have higher occurrence rate among them. The rocky desertification mainly distributes in the shrub land, unused land and grassland area, which accounts for nearly 65.6%of the total area. And the high grade rocky desertification area also accounts for 79.9%. we should fully consider the different land use structure of rock desertification, reasonable layout project of protective forest, economic forest and woodland construction in rocky desertification control project.