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选择以连续性灰岩、白云岩为基底的,不同地貌区域的小流域为研究对象,通过遥感数据源提取其石漠化信息,对不同地貌区中石漠化分布的岩性差异进行分析。结果表明灰岩小流域的生态环境对地貌区变化敏感,随着高原区到峡谷区的过渡,石漠化发生愈频繁兼强度加大;白云岩小流域中斜坡区石漠化景观发生频率高且强度大,峡谷区石漠化面积虽大但不严重,高原区生态环境最优。在石漠化小流域恢复中提出了以空间地域分异为指导的分级治理原则。首先以岩性作为分级指标,灰岩优先于白云岩地区。灰岩地区中以高原区为生态恢复的首选,其次是峡谷区。白云岩的斜坡区是治理重点,高原区随后。
Based on the continuous limestone and dolomite basalts and small watersheds with different topographic features, the authors selected the rock desertification information from remote sensing data sources to analyze the lithology differences of rocky desertification distribution in different landforms. The results showed that the ecological environment of limestone small watershed was sensitive to the change of geomorphology area. With the transition from plateau area to canyon area, the occurrence of rocky desertification was more frequent and stronger; the frequency of rocky desertification in dolomite small watershed was high And its intensity is great. Although the area of rocky desertification in the gorge area is large but not serious, the ecological environment in the plateau area is optimal. In the recovery of rocky desertification small watersheds, we put forward the principle of hierarchical governance guided by spatial and geographical differentiation. First of all lithology as a grading index, limestone priority over the dolomite area. Limestone areas in the plateau area for ecological restoration of choice, followed by the gorge area. Dolomite slope area is the focus of governance, plateau area subsequently.