摘要
广饶县井灌区地下水是当地农业生产和人民生活的重要水源。随着当地国民经济的增长，需水量不断加大，地下水连年超采，致使地下水位大幅度下降，由1984年的1．97m下降至2001年的-10．79m。该文运用小波分析的方法，研究了井灌区1975-2000年逐月的地下水埋深的动态变化，并结合1956-1995年40年的降水量小波分析探讨了地下水位下降的驱动因子，得出在1975年以前和1980年前后地下水埋深与降水量有较好的对应关系。
The groundwater in well-irrigated area, Guangrao county is very important to the agriculture production and their people living. Along with the development of regional economy, the need of water resource has a rapid increase. The groundwater depth has declined due to the groundwater overexploitation. The water level has dropped from 1.97 m in 1984 to -10.79 m in 2001. The monthly groundwater depth changes from 1975 to 2000 in well-irrigated area as well as the annual precipitation changes from 1956 to 1995 were studied with wavelet analysis. The results indicated that the groundwater depth and the annual precipitation changes were both periodic and the growing trend is going on by the forecast. The conclusion is that the groundwater depth matched well with the annual precipitation before 1975 and in about 1980 while it is more and more affected by the jamming such as pump nowadays.
出处
《水土保持研究》
CSCD
北大核心
2007年第2期55-58,共4页
Research of Soil and Water Conservation
基金
国家自然科学基金资助项目(No.40271001)
关键词
小波分析
地下水埋深
降水量变化
井灌区
wavelet analysis
groundwater depth
annual precipitation changes
Guangrao county
