上海地区土壤水分月季变化特征分析  

Analysis on Monthly and Seasonal Variation of Soil Moisture in Shanghai

作　　者：张皓[1] 李军[1] 杨捷[2] 薛正平[1] 辛跳儿[1] 

机构地区：[1]上海市气候中心,上海200030 [2]上海市农业科学院环境科学研究所/上海市设施园艺技术重点实验室,上海201106

出　　处：《中国农业气象》2009年第S1期10-15,共6页Chinese Journal of Agrometeorology

基　　金：上海市气象局研究型业务专项(YJ200705);上海市气象局科技开发项目启明星专项(QM200801);科技部国家科技支撑项目子专题(2007BAC03A02-02-02)

摘　　要：利用上海地区3个站点的土壤水分资料,通过VBA工具和Surfer8.0软件进行编程和地图显示,采用趋势分析方法,分析了上海土壤水分月季分布特征。结果表明:土壤水分逐月变化在10cm波动最为剧烈,含水量最低,50cm波动最小,含水量最高。各层土壤水分逐月波动趋势基本一致。晴天和多云天气春季土壤含水量最高,秋季最低;阴天夏季最高,秋季最低;雨天夏季最高,冬季最低;晴天各季节土壤水分差异最小,阴天最大。各季节雨天土壤含水量最高,冬季和春季4种天气类型下土壤含水量分布相似。Based on soil moisture data of three observations in Shanghai,the characteristics of temporal variability of soil moisture were analyzed using trend analysis method with VBA tools for programming and Surfer 8 for map expression.The results showed that monthly variability of 10cm depth of soil moisture fluctuated violently with the lowest soil water content,while 50cm depth of soil moisture fluctuated steadily with the highest soil water content.The monthly fluctuation of different soil depths was basically identical.The highest soil water content of sunny and cloudy day appeared in spring and the lowest in autumn,the highest of overcast day appeared in summer and the lowest in autumn,the highest of rainy day appeared in summer and the lowest in winter.The minimum differences of soil water content among seasons appeared in sunny day while the maximum one in overcast day.The highest soil moisture of each season all appeared in rainy day and the distributions of soil water content under different weather types were basically identical in spring and winter.

关 键 词：上海地区 土壤水分 月季变化 

分 类 号：S152.7[农业科学—土壤学]