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中文摘要：
为获得中国不同气候区各层深度土壤湿度变化特征及其对气候变化的响应,利用中国区域台站观测土壤湿度资料、降水及气温资料,采用趋势、相关性分析及突变检验等方法,讨论了东北、河套、江淮区域1981-1999年不同深度土壤湿度变化特征及其对气温、降水的响应。结果表明：东北、江淮地区为土壤湿度高值区,河套地区为土壤湿度低值区,土壤湿度由浅层至深层呈上升趋势;东北、河套地区降水和土壤湿度变化呈正相关,江淮地区降水和土壤湿度呈负相关;东北、河套地区气温和土壤湿度变化呈负相关,江淮地区气温与土壤湿度呈正相关关系。土壤湿度对降水的响应比对气温变化的响应更加显著。
英文摘要：
By utilizing soil moisture data of international soil moisture network from Dongbei,Hetao and Jianghuai regions of China. Discussed three areas with different soil moisture characteristics,response with temperature and precipitation,and other climate change factors during 1981 - 1999 by using trend analysis,correlation analysis and mutation test methods. The results can be concluded as follows. Regions of Dongbei,Hetao have higher value of soil moisture. Changes in soil moisture during the year and interannual variability of soil humidity values displayed by the increasing trend of shallow to deep. During this time. Regions of Dongbei have most significant relationship. Dongbei,Hetao have a trend of reduced precipitation when soil moisture with a downward trend,but Jianghuai have a trend of raise. Soil moisture response to precipitation changes is more significant than the temperature changes.
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