放牧和刈割条件下草山草坡群落空间异质性分析

采用变异矩分析和分形方法，研究了草山草坡群落在放牧和刈割条件下的空间异质性及空间自相关性，结果表明，群落空间格局有尺度依赖性，刈割条件下空物异质性及空间相关性弱，多样性梯度即β多样性小，放牧消除地形引起的样地差异，因而使空间异质性简单化。

Spatial heterogeneity of grassland pattern under grazing and forage condition

Spatial heterogeneity and spatial autocorrelation of grassland pattern under grazing and forage condition were studied using semivariance analysis and fractal method. The results indicate that vegetation patterns are scale-dependent. Spatial heterogeneity and spatial autocorrelation of foraged grassland are more complex than grazed grassland and have more scale regions which determined by different fractal characteristics. Spatial autocorrelation of species diversity on foraged grassland was weaker, in another word, gradient of species diversity(beta-diversity) was smaller. Spatial heterogeneity of grazed grassland was simplified by grazing, because topographical variation was partly wiped out.