SCIENTIA GEOGRAPHICA SINICA ›› 2006, Vol. 26 ›› Issue (5): 569-573.doi: 10.13249/j.cnki.sgs.2006.05.569

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Change Trend of Soil Water Storage of Heilongjiang Province in Recent 20 Years

ZHAO Xiu-Lan, YAN Xiao-Dong   

  1. Key Laboratory of Regional Climate-environment for East Asia, Institute of Atmospheric Physics, Chinese Academy of Sciences & START Regional Center for Temperate East Asia, Beijing 100029
  • Received:2005-04-18 Revised:2005-08-20 Online:2006-09-20 Published:2006-09-20

Abstract: The soil moisture data from 33 agro-meteorological stations are employed to investigate the linear trend of soil water storage of Heilongjiang Province, north of Northeast China in recent 20 years. The results show that the whole trend of soil water storage from soil surface to top 50cm for growth season is decreasing. Moreover, not only the dry trend in mountainous regions is more significant than in plain regions, but also the climate wetness of normal regions are easier to be dry than the semi-arid region. From soil surface to top 50cm, the decreasing extent of mean soil water storage for the whole growth season over the region increases with vertical soil depth. The decreasing trend in spring and autumn are more evident than in summer. Combining the local and regional ecological and climatic characteristics, the paper discussed the disadvantageous influences of soil moisture storage on agriculture and ecology in Heilongjiang Province as well as the corresponding regulative measures and water managements.

CLC Number: 

  • S152.7.2