摘要
Based on the 1961-2010 weather data from 65 meteorological stations in Heilongjiang Province, using the statistic software and GIS, the change characteristics of water budget, including the precipitation, reference evapotranspiration and water budget in the whole year and the temperature-defined growing season, were analyzed. The results indicated that the both the precipitation during the whole year and that of during the temperature-defined growing season from 1961 to 2010 all decreased, while the annual reference evapotranspiration decreased, but the reference evapotranspiration during the temperature-defined growing season presented an increasing trend. The water resources were generally characterized by water deficit, especially in the beginning of 21 st .
利用黑龙江省1961～2010年65个气象台站的观测资料,结合统计和GIS软件,分析了全年及温度生长期降水、潜在蒸散及水分盈亏情况的变化特征。结果表明,1961～2010年黑龙江省全年和温度生长期内的降水量均呈下降趋势,但全年和温度生长期内参考作物蒸散量的变化趋势并不完全相同,年潜在蒸散量总体呈减少趋势,而温度生长期内的潜在蒸散量多呈增加趋势,总体上表现为水分亏缺状态,特别是进入21世纪以来,水分亏缺尤为严重。
基金
Supported by the Special Fund for Meteorological-Scientific Research in the Public Interest(GYHY201106026,GYHY200906021,GYHY200706030)
the Special Fund for Climate Changes of China Meteorological Administration(CCSF-09-13)~~
