松嫩平原地下水资源及其变化

Actuality and change of groundwater resources in the Songnen Plain

在实地调查、勘探,获得大量实测资料的基础上,利用50多年的水文气象资料,对松嫩平原地下水资源重新评价发现,由于气候、水文条件的变化以及人工开采等人类活动的影响,地下水资源自上世纪80年代以来呈现逐渐减少的变化趋势。2005年全区地下水补给量比1984年减少14.06×108m3,比1994年减少8.81×108m3;开采资源比1984年减少18.99×108m3,比1994年减少7.5×108m3。分析表明,防止地下水资源衰竭和由于过度开采地下水而引起生态环境恶化,关键是控制合适的地下水位。

We assessed the status of the Songnen plain＇s groundwater resources by using the hydro-meteorological data of the recent 50 years,on the basis lots of measured data by exploration and field survey.According to the research we found that the groundwater resources present a decreasing trend from the 1980s due to the changes in climate and hydrological conditions,and human exploitation.The groundwater recharge in the region in 2005 had reduced 14.06×10^8m^3 compared with 1984,and 8.81×10^8m^3 compared with 1994.Exploitation of resources in the region in 2005 had reduced 18.99×10^8m^3 compared with 1984,and 7.5×10^8m^3 compared with 1994.It is the Key for controlling groundwater level by exploiting groundwater resource reasonable,preventing the groundwater resource depletion and ecology environment worsen by overly exploiting.