摘要
地下水位作为生态环境效应的一个重要指向,其监测与分析为地区生态环境治理提供了一定的依据。通辽地区地下水位监测结果显示：截至2015年12月地下水位埋深最深处为库伦旗,达3 480 cm,霍林郭勒市最浅为208 cm,其余地区232-1 177 cm。与2014年相比,除北部地区及科左后旗外,其余地区下降20-64 cm。自然降水明显不足,农田灌溉量的增加,地下水超负荷使用及不合理开发,导致全市地下水位呈下降趋势。从月份来看,降水集中月份大部地区地下水位有所回升或下降趋于缓慢。通辽地区降水作为地下水补给的主要因素,在时间上具有一定的滞后性。
As an important point of the ecological environment effect, monitoring and analysis of underground water level had provided some basis for the ecological environment in the region. The results of Tongliao underground water level monitoring in 2015 showed that the deepest of groundwater level depth was 3 480 centimeter deadline to December in county of Kulun. The lowest of groundwater level depth was 208 centimeter in the city of Huolingol. The underground water level declined from 20 centimeter to 64 centimeter in the whole Tongliao city except this northern part and the Kezuohou banner. The reason of underground water level downward included insufficient natural precipitation, increase of farmland irrigation and irrational exploitation of ground water. From the months of view, the underground water level had picked up on the precipitation concentration months. The main factor of underground water recharge was precipitation with hysteresis in Tongliao city.
出处
《北方农业学报》
2016年第6期91-93,共3页
Journal of Northern Agriculture
关键词
地下水位
变化特征
自然降水
Underground water level
Change characteristics
Precopitation
