Analysis on Scaled Potential of Land Resources of Karst Mountain Areas Based on GIS Technology and Landscape Ecology Methods

The paper focuses on discussing how to set up indexes including patch area,richness index,patch square index,concentration index and cultivation radius for evaluating SLR.By taking a Karst mountain area as an example,the authors use the landscape pattern indexes combining with DTM data GIS technology to evaluate the scaled potential degree of land resources of the Karst mountains areas.As terrain gradient is also a key factor to SLR,the paper classifies the gradient into three grade:P≤5°,5°P≤15°,P15°(P means gradient),two regions of Karst terrain:river valley,Karst peak cluster-depressions and Karst peak forest-valley according to the terrain gradient for evaluating and has compared different scaled potential degree of land resources in different grade of gradient and terrain regions.