干旱区生态环境知识资源中心

Small watershed is the basic element of rocky desertification management in karst area. For strengthening the comprehensive management plan, it is necessary to extend the management in a larger scale as the basis of the ecological management in small watershed. It is to make the quantitative analysis of the rock desertification landscape pattern dynamic changes based on the landscape types model in the study area of Tongjin vallage of Dafang county. The study basis is the geographic information system. The key technology is the landscape spatial pattern analyzing methods. By the quantitative model statistically analyzed the related indices of two periods rocky desertification landscape. It is indicated that the whole landscape pattern becomes more complex. But different degrees of rocky desertification landscape pattern have improvements. Higher rocky desertification imporved to the low one. Among them, the most obvious change is moderate and intensive rocky desertification. The comparasion analysis among the rock desertification spatial pattern in the typical karst area will reveal the ecological management meaning and provide the reference for the coming-up planning. (C) 2011 Published by Elsevier Ltd. Selection and/or peer-review under responsibility of Conference ESIAT2011 Organization Committee.