基于3S技术的广西喀斯特石漠化驱动机制图谱分析——以广西壮族自治区为例

TUPU Analysis on Driving Mechanism of Guangxi Karst Rocky Desertification Based on 3S Techniques

喀斯特石漠化是指喀斯特区地表出现类似荒漠景观的土地退化过程。图谱分析为喀斯特石漠化研究提供了一种谱系化、定量化与定位化相结合的研究方法。以广西喀斯特区为例,从组成喀斯特生态系统的地质、岩性、植被、地貌、气候及人类活动等多个方面入手,采用3S技术,得出石漠化分布及其驱动因子图;对石漠化分布图及驱动因子图进行图形叠加运算及相关分析,诊断出石漠化驱动机制。结果表明,喀斯特石漠化是在脆弱的生态环境地质背景上由于人类的强烈扰动而形成的,是多种因子综合的结果。

Karst rocky desertification is called as the land degenerating procession occurring in the karst area similar to wilderness landscape. TUPU analyses tyization and position locationization for has provided one kind of research method combing pedigreeization, quantikarst rocky desertification. Taking Guangx karst area as the example, proceeding from many ways including geological, lithology, vegetation, relief, climate, and as well human activities composed of karst ecological system, and adopting 3S technique, it is obtained that rocky desertification distribution and their driving factor TUPU. The driving factor figures of rocky desertification are taken figure operations and their interrelate analysis, diagnose out the driving mechanism of rocky desertification. The result shows that karst rocky desertification is formed by intense human turbulence in the frail geo-ecological environmental background, is the comprehensive outcome of many factors.