2007•Zhongguo nongye qixiangRequires access
Analysis of Relationship on Soil Moisture and Climate Change in Rain-fed Agricultural Areas of Henan Province
Zhihong Ma
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Abstract
Based on the data of the meteorological and soil moisture of eight agro-meteorological observation stations from 1981 to 2005 in Henan Province,the relationship on soil moisture and climate change in the rain-fed agricultural areas of Henan Province was analyzed.The results showed that the mean annual temperature increased averagely by 0.05℃ per year in the last 25 years,and the variation of annual precipitation was not observed.The soil moisture was negatively related to the temperature and positive related to the precipitation significantly.Due to the influence of warming up,the soil moisture in the rainfed farming areas in Henan Province showed a decreased tendency in recent 25 years.