云南省土壤墒情变化特征分析

分析云南省土壤墒情变化特征。利用2008-2012年云南省13个土壤墒情监测站的土壤重量含水量和日降水数据,分析其土壤墒情的时空变化特征。结果表明:滇东南和西北部的土壤墒情较高,而滇中的土壤墒情较低。不同深度的土壤含水量呈显著线性相关,且整体上表现为深度越深土壤含水量越大。土壤含水量与降水量大致呈正相关;土壤含水量最大值出现在6-10月,且基本上滞后降水最大月份1个月;土壤含水量最小值出现在1-4月。

Analysis of Soil Moisture Variation Characteristics in Yunnan Province

Using 13 stations daily measuring dates of soil moisture content and precipitation in Yunnan province from 2008 to 2012, the temporal and spatial variation features of soil moisture are analyzed in this paper.The results showed that:The soil water con-tent is higher in southeast and northwest but lower in central of Yunnan.The soil moisture content has significant linear correlation between different depth,with the increment of the depth of soil layer,the moisture content is more high.Soil moisture content and precipitation are positively correlated,the maximum value occurs in June to October and lags behind the maximum precipitation oc-curring time in a month,and the minimum value occurs in January to April.