【摘要】 通过空间叠置分析,探讨了坡度、坡向对低山茶园土壤有机质空间变异的影响。结果表明:①蒙顶山茶园土壤有机质空间分布与坡度变化基本一致,在15°～35°的坡度区域,土壤有机质含量较高:②坡向对土壤有机质空间变异的影响不如坡度明显,但在110°～180°范围影响较大:③坡度、坡向对土壤有机质空间变异的影响几乎相对独立,但沟谷附近交互影响较显著。更多还原

【Abstract】 Through spatial overlapping analysis,this paper discussed the effects of the two topographic features derived from Digital Elevation Model(DEM) on spatial heterogeneity of soil organic matter(SOM) in a low mountainous region.The results showed that:①SOM spatial variability was basically consistent with the change of slope’s gradient in Mengding Mountain,and SOM content was highest at the gradient range from 15°to 35°;②the effect of slope’s aspect on SOM spatial heterogeneity was not as intensive as slope’s gradient,but it was obvious at the gradient range from 110°to 180°;③the effects of slope and aspect on SOM spatial distribution were nearly independent,but in some special areas, for instance,in gullies,the interactive influence of the two attributes on SOM heterogeneity was also obvious.更多还原