农业气象灾害期间地下水位变化分析

The Change of Underground Water Level during the Period of Agricultural Meteorological Disaster

为了拓宽基层农业气象台站的"三农"服务领域,该文结合莱州近几年出现的农业气象灾害及同期YE0-KAL612水质分析仪观测数据,分析了农业气象灾害期间地下水位深度变化。结果表明:冬春持续干旱过程引起地下水位持续下降,人为采水进行大田灌溉导致水位反复变化;夏季强降水过程使地下水位持续升高,且不同强度的降水地下水位表现不同;冬季暴雪过程引起水位变化与地面积雪融化时间基本同步;固态降水较液态降水致地下水位变化滞后;地下水位变化与降水关系密切。

In order to broaden the basic agricultural meteorological stations in the three rural service areas,from theagricultural meteorological disaster in Laizhou in recent years,combined with the observation data during the sameperiod YE0-KAL612 analyzer,the change of the depth of underground water level during the period of agriculturalmeteorological disasters was analyzed. The results showed continuous winter drought caused underground water leveldecline,water irrigation field led to the water level changes again;summer strong precipitation kept the undergroundwater level rise continuously,and the different intensity of precipitation showed different underground water level;water level changes were caused by snowstorm winter and snow melting;the change of groundwater level was affectedby solid precipitation more than liquid precipitation;the change of groundwater level and precipitation are closely re-lated.