中文摘要：

运用地统计学方法,分析了浙江天童常绿阔叶林土壤pH值、全碳、全氮和全磷的空间异质性及分布格局,并基于RDA排序和偏回归方法定量评价了海拔、凹凸度和坡度等地形因子对土壤性质的影响程度.结果表明：常绿阔叶林土壤的pH值、全碳、全氮和全磷的变异系数分别为5.18%、42.98%、36.55%和46.27%;土壤性质的空间自相关范围为81.6～54.5m,pH值、全碳和全氮呈中等程度的空间自相关,而全磷存在强烈的空间自相关;pH值、全碳和全氮均呈零星斑块状空间分布,全磷则呈条带状分布;地形因子中,pH值和全磷受凹凸度的影响最大,为负相关,凹凸度能单独解释pH值和全磷空间变异的21.24%和14.62%;全碳和全氮受海拔影响最大,呈正相关,海拔能单独解释全碳和全氮空间变异的10.54%和10.60%.不同地形因子对土壤性质各指标空间变异的影响程度存在差异,与本地区酸性降雨分配及局地土壤水分含量和气温受地形的影响有关.

英文摘要：

By using geostatistical methods,this paper studied the spatial heterogeneity and distribution patterns of soil pH,total carbon,total nitrogen,and total phosphorus in an evergreen broadleaved forest in Tiantong of Zhejiang Province,and the effects of terrain factors（elevation,convexity,and slope） on the soil properties were quantified based on RDA ordination and partial regression analysis.The coefficient of variation for the soil pH,total carbon,total nitrogen,and total phosphorus was 5.18%,42.98%,36.55%,and 46.27%,respectively,and the spatial dependence of the soil properties was at a scale of 81.6-54.5 m.The soil pH,total carbon,and total nitrogen had moderate spatial autocorrelation,while the soil total phosphorus had a strong spatial autocorrelation.The soil pH,total carbon,and total nitrogen showed scattered spatial distribution,while the soil total phosphorus presented banded type.Among the terrain factors,convexity had the strongest effects on the soil pH and total phosphorus,both of which had negative correlation with convexity,and the convexity could explain 21.24% and 14.62% of the spatial variability of soil pH and total phosphorus,respectively.Elevation had the most powerful effects on the soil total carbon and total nitrogen,both of which had positive correlation with elevation,and the elevation could explain 10.54% and 10.60% of the spatial variability of soil total carbon and total nitrogen,respectively.There existed differences in the effects of different terrain factors on the spatial variability of the soil properties,which was related to the effects of terrain factors on the distribution of acidic rainfall in the region and on the local soil moisture content and air temperature.