主办单位:中国气象局沈阳大气环境研究所
国际刊号:ISSN 1673-503X
国内刊号:CN 21-1531/P

Journal of Meteorology and Environment ›› 2012, Vol. 28 ›› Issue (5): 34-.doi:

• Articles • Previous Articles     Next Articles

The evolution of summer soil moisture from 1981 to 2010 in Heilongjiang province

ZHU Hai-xia1 GONG Li-juan1 QU Hui-hui1 LV Jia-jia1 WANG Liang-liang1 LI Bai-chao2 JI Yang-hui1 YAN Ping1 WANG Qiu-jing1 JIANG Li-xia1 WANG Ping1   

  1. 1. Institute of Meteorological Sciences in Heilongjiang Province, Harbin 150030, China; 2. Heilongjiang Meteorological Service, Harbin 150001, China
  • Online:2012-10-31 Published:2012-10-31

Abstract: Based on the soil moisture data at 6 weather stations (Fujin, Longjiang, Shuangcheng, Heihe, Hailun, Ning’an) from 1981 to 2010 in Heilongjiang province, the trend of soil moisture and dry-wet variation of different regions at 0-50 cm soil layer from July to August were analyzed, and the significance of soil moisture variation and its abrupt change were discussed by a Mann-Kendall method. The results indicate that soil moisture from 0 cm to 50 cm soil layer in summer decreases in the recent 30 years in Heihe, Hailun and Longjiang, especially in the west of Longjiang. There is not significant decreasing trend in the east of Fujin, the south of Shuangcheng and Ning’an. There are abrupt changes in Heihe, Hailun and Longjiang by a Mann-Kendall test, and it suggests that drought trend and extent of summer soil moisture become significant in Heihe areas, the west and north of the Songnen plain. The decrease of inter-annual summer soil moisture might be related to the climatic conditions and the deterioration of the soil physical and chemical properties in Heilongjiang province.

Key words: Heilongjiang province, Soil moisture, Variation tendency, Significance