J4 ›› 2011, Vol. 29 ›› Issue (3): 289-296.

• 论文 • 上一篇    下一篇

黑龙江省春季土壤湿度近30 a 变化趋势

李百超1温秀卿2 ,王晾晾2闫平2
  

  1. 1. 黑龙江省气象局,黑龙江哈尔滨150001; 2. 黑龙江省气象科学研究所,黑龙江哈尔滨150030
  • 出版日期:2011-11-30 发布日期:2011-11-30

Tendency of Soil Moisture in Spring of Heilongjiang Province in Recent 30 Years

LI Baichao1,WEN Xiuqing2,WANG Liangliang2,YAN Ping2   

  1.  1. Heilongjiang Provincial Meteorological Bureau,Harbin 150001,China; 2. Institute of Meteorological Sciences of Heilongjiang Province,Harbin 150030,China)
  • Online:2011-11-30 Published:2011-11-30

摘要:

利用黑龙江省1981 ~ 2010 年的土壤湿度数据,以富锦县、龙江县、双城县、黑河市、海伦县为代表点,分析了黑龙江省东、西、南、北、中各区域春季播种期间( 4 月28 日) 各土层土壤湿度的趋势变化和干湿变化,并采用Mann - Kendall 法对土壤湿度变化趋势进行显著性和突变点检验。结果表明:0 ~ 30 cm 土层各地土壤湿度在30 a 间均有不同程度下降,北部的黑河市土壤湿度下降剧烈,西部龙江县、东部富锦县次之,并且龙江县干湿波动幅度大; Mann - Kendall 检验结果: 近30 a 中,黑龙江省各地0 ~ 30 cm 土层土壤湿度总体呈下降趋势,北部、西部和东部的黑河市、龙江县、富锦县土壤湿度下降趋势显著,并出现了突变区域,中部和南部的海伦县、双城县土壤湿度也存在下降,但下降不显
著,近几年有达到下降显著的趋势。黑龙江省土壤湿度年际间的下降不仅与全球气候变暖背景下黑龙江省温度升高、地表温度变暖、生长季降水量总体减少趋势有关,还与土壤物理性质的恶化等因素密切相关。

关键词: 黑龙江, 土壤湿度, 变化趋势

Abstract:

 By using the soil moisture data from 1981 to 2010,the trend of soil moisture in the east,the west,the south,the north and the middle region ( the representative stations were Fujin,Longjiang,Shuangcheng,Heihe and Hailun,respectively) of Heilongjiang province during sowing period( on April 28) was analyzed. And the significance level and mutational site of soil moisture change were tested with Mann - Kendall method. The results show that the soil moisture from the depth of 0 cm to 30 cm presented downtrend in each region in the recent 30 years,and decreased most in Heihe,and secondly in Longjiang and Fujin,but no significant decreasing trend in Hailun and Shuangcheng county. The decrease of soil moisture was not only correlated to the deterioration of the soil physical properties,but also related to the increase of air and surface temperature and decrease of precipitation during crop growing period under the condition of global warming.

Key words: Heilongjiang, soil moisture, tendency

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