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2 岩溶槽谷区石漠化在不同坡度中的空间分布

Tab. 2 Distribution of rocky desertification in different grades in karst trough area

坡度(°) (面积/km2) 轻度石漠化 (km2) 中度石漠化 (km2) 重度石漠 (km2) 石漠化总面积 (km2) 发生率 (%) 0~8(21096.1) 1048.5(8.8%) 765.1(8.9%) 47.8(5.9%) 1861.4 8.8 8~15(36956.2) 3520.4(29.6%) 2584.2(30.0%) 230.9(28.4%) 6335.5 17.1 15~25(44495.3) 5780(48.6%) 3899.9(45.2%) 495(60.9%) 10174.9 22.9 > 25(29572.3) 1545.9(13.0%) 1366.6(15.9%) 39.4(4.8%) 2951.9 10.0 总计(132119.9) 11894.8(100%) 8615.8(100%) 813.1(100%) 21323.7 16.1