【摘要】 为了研究天然林森林资源的景观变化,文章使用了景观空间格局分析软件包FRAGSTATS,主要计算了景观形状指数、平均形状指数、面积加权斑块平均形状指数、双对数破碎度、斑块平均分维度、面积加权斑块平均破碎度、香农多样性指数、香农均匀度指数、辛普森多样性指数、辛普森均匀度指数、修正辛普森均匀度指数、修正辛普森多样性指数。结果表明:面积加权斑块平均形状指数、双对数破碎度、斑块平均破碎度略有下降,也就是说,斑块(小班)形状变化不大。森林景观的变化要滞后资源的变化。各种斑块的多样性指数变化不明显。斑块丰富度和斑块丰富度密度大幅上升。更多还原

【Abstract】 To study the landscape change of natural forest resources,FRAGSTATS package of landscape space pattern was used.Landscape Shape Index,Mean Shape Index,Area-Weighted Mean Shape Index,Double Log Fractal Dimension,Mean Patch Fractal Dimension,Area-Weighted Mean Patch Fractal Dimension,Shannon’s Diversity Index,Shannon’s Evenness Index,Simpson’s Diversity Index,Simpson’s Evenness Index,Modified Simpson’s Evenness Index and Modified Simpson’s Diversity Index were calculated.The results showed that Area-Weighted Mean Shape Index,Double Log Fractal Dimension and Mean Patch Fractal Dimension decreased slightly,that is the shape of patch(subcompartment) didn’t change a lot.The change of forest landscape was later than that of forest resource.The change of diversity index of patches was not obvious.But Relative Patch Richness and Patch Richness Density increased rapidly.更多还原