基于GIS的沐川林场森林景观敏感度评价

以1999年沐川县森林资源分布图和由数字化等高线得到的DEM数据为信息源，利用AreGIS的空间分析功能，用坡度、距离两个分量对沐川林场主要观景线路上森林景观斑块类型进行了景观敏感度评价，结果表明：沿线近景带200m内的可见区域景观敏感度基本都为二、三级，占到了近景带总面积的80．2％，景观敏感度较高，但景观结构过于单一。800m以外区域的远景带综合景观敏感度二、三级也占到了远景带总面积的89．3％。基于以上研究结果，提出了沐川林场森林景观开发利用建议：即以保护高敏感度景观为主，改善旅游线路两侧森林景观结构，调整森林景观斑块类型群落结构，增加森林景观斑块树种组成。

Evaluation of Landscape Sensitivity Based on GIS in Muchuan Forestry Farm

ArcGIS was used to analyze and estimate the landscape sensitivity of Muchuan Forestry farm,to deal with the data of DEM that came from forest distribution map and digital contour.The high comprehensive landscape sensitivity(2 or 3 level)is disclosed in the range of close shot area approximately 200m,and reaches 80.2% of the total shot area,whereas with low landscape structure.In some 800m of visual field,the high comprehensive landscape sensitivity(2 or 3 level)also reaches 89.3% of the total far area.As a result,some proposals are advanced,such as protecting the high sensitive landscape,optimizing the forest landscape structure,regulating the community structure of forest landscape patch type and increasing tree species in the main viewing route.