四川省卧龙自然保护区景观人为影响的空间分布特征研究

在景观遥感制图的基础上，利用缓冲区分析和相邻缓冲区的景观结构总体变异系数方法对卧龙自然保护区进行了自然景观和人为影响景观的分割研究，并对人为影响景观的空间分布特征进行了分析。结果表明，工作区内水电站、居民点和道路3种不同人为影响发生源对于周围景观结构的显著影响距离为1000～1200m，利用这一距离可以对工作区的自然景观和人为影响景观进行合理分割；海拔2400～4800m和坡度20°～40°区间为卧龙自然保护区人为干扰活动强度最大的区域，这种人为影响景观的空间分布特征对于保护区的自然管理工作威胁极大。此外，研究还证明，对于自然景观和人为影响景观进行合理分割，有助于景观人为影响的细节研究。

A Study of the Spatial Distribution Characteristics of Human Landscape Impact in Wolong National Natural Reserve,Sichuan Province

Based on the landscape remote sensing mapping, buffer zone analysis and total variation index calculation of landscape structure for two neighbored buffer zones were used to divide the natural landscape and human impacted landscape in Wolong Natural Reserve. The spatial distribution characteristics of human impacted landscape were also studied. The results indicated that hydraulic power station, residential area, and road are three primary human impact sources, and the distance of significant impact on landscape structure of around area for these sources is between 1000～1200m. This distance can be used to divide the whole study area into natural landscape and human impact landscape suitably. Human landscape distribution to land form resulted that the area with elevation from 2400 to 4800m and slope gradient from 20°to 40°are the heaviest human impacted region in Wolong Natural Reserve. The spatial distribution characteristics of human impacted landscape are very dangerous for the natural conservation management works. Furthermore, it is also concluded that suitable dividing of natural and human impacted landscape may help the detailed study of landscape human impact.