典型岩溶峰丛洼地土壤温度的空间异质性

Study of Spatial Variability of Soil Temperature in Typical Karst Peak ClusterDepressions

应用地统计学方法与GIS技术，将土壤温度室内布点与实地监测相结合，对果化示范区土壤温度空间变异特征进行了研究。结果表明，各层土壤温度均值为26．75～27．24℃，变异系数为6．2l％～9．52％，说明果化示范区土壤温度呈低强度变异（CV〈10％），且随土壤深度的增加土壤温度的变异系数逐渐减小；各深度土壤温度的空间数值呈现一定的变异．主要呈弧状分布和条状分布．其中．南北分异较东西分异更为明显。

By using Geo-statistics and GIS,combining with indoor sampling point distribution and field monitoring of soil temperature,the spatial variability characteristics of soil temperature in Guohua demonstration zone were studied. Statistical analysis showed that the average soil temperature among various layers was from 26.75 ℃ to 27.24 ℃ while variation coefficient was from 6.21% to 9.52%,which revealed variation coefficient of soil temperature had weak variability（CV〈10%）.The variation coefficient of soil temperature decreased by the increasing soil depth.The soil temperature showed uneven arc-shaped and banded distribution that the variation in north-south direction was more obvious than that of in east-west direction.