基于GIS与地理探测器的岩溶槽谷石漠化空间分布及驱动因素分析

王正雄,蒋勇军,张远嘱,段世辉,刘九缠,曾泽,曾思博

Spatial distribution and driving factors of karst rocky desertification based on GIS and geodetectors

WANG Zhengxiong,JIANG Yongjun,ZHANG Yuanzhu,DUAN Shihui,LIU Jiuchan,ZENG Ze,ZENG Sibo

表6 岩溶槽谷区石漠化在不同人口密度下的空间分布

Tab. 6 Distribution of rocky desertification under different population densities in karst trough area

人口密度(人/km2) (面积/km2) 轻度石漠化 (km2) 中度石漠化 (km2) 重度石漠化 (km2) 石漠化 总面积 发生率 (%) 0~100(36993.6) 2789.3(23.5%) 2869.2(33.3%) 141.5(17.4%) 5800.1 15.7 100~200(38314.8) 5654.8(47.5%) 3868.4(44.9%) 341.3(42.0%) 9864.5 25.7 200~300(39636.0) 1905.4(16.0%) 1758.1(20.4%) 102.8(12.6%) 3766.3 9.5 > 300(17175.6) 1545.3(13.0%) 120.0(1.4%) 227.5(28.0%) 1892.8 11.0 总计(132119.9) 11894.8(100%) 8615.8(100%) 813.1(100%) 21323.7 16.1