贵州省土壤温度状况估算

土壤温度是土壤重要的内在属性,亦是反映区域环境特征和土壤系统分类体系中的重要基础性指标。但在贵州省境内,由于缺乏数据观测体系,目前还缺乏完整的土壤温度报道和估算方法。介于此,本文收集了贵州省境内84个气象站多年的地面气候资料数据,通过拟合土壤温度与年平均气温、纬度、经度和海拔高度之间的关系,构建了相应的土壤温度估算模型,并与其他三种地区性土温测算方法进行比对,得到了相对一致的分析结果。模型估算的区域土壤温度结果显示,贵州省各地区土壤温度以"热性土壤"为主(15℃≤Y22℃),少数地区如:毕节的大方、威宁和六盘水的水城三个地方为"温性土壤"(8℃≤Y15℃)。

Prediction of Soil Temperatures in Guizhou Province, China

Based on the meteorological data of 84 stations in Guizhou Province, China, during the period from 1951/71 to 1980, this paper attempted to reveal the correlationsof soil temperature,annual average temperature, latitude, longitude and altitude. Comparisons were made between the regression equation and the other 3 methods. Simulation resultsreveal that most of soil temperatures of Guizhou Province trend to be the "thermic temperature regime" and soil temperatures of Dafang, Weining, and Shuicheng Counties belong to "Mesic temperature regime". The regression equation can be applied to measure soil temperature for further data collection of Guizhou soil taxonomy.