海河流域地下水储量空间变化趋势分析

近年来,随着工农业的发展,海河流域的地下水资源被严重超采利用,然而由于监测地下水储量变化的监测井数目有限并且分布不均,很难从流域角度把握地下水储量的空间变化趋势.本文利用GRACE重力卫星最新CSR RL05版数据反演推算了海河流域2005～2009年间地下水储量的空间变化,这为合理利用地下水资源提供了科学依据.首先为验证GRACE反演推算结果的可靠性,将结果与该流域监测井的数据进行对比分析,结果表明二者的变化趋势基本一致.然后对海河流域地下水储量变化的空间分布进行分析和讨论,并与《河北省平原区地下水通报》进行对比分析.研究结果表明：在2005～2009年时间段内海河流域地下水储量变化均处于下降的趋势,变化范围在-10～-44 mm/a,大部分区域下降的幅度较大,以石家庄、邢台等地下降幅度较为严重.

Haihe Basin Groundwater Reserves Space Trend Analysis

Recent years,with the development of industry and agriculture,the groundwater resources in Haihe Basin are over exploited utilized. However,due to the limited number of monitoring wells and the uneven distribution monitoring groundwater reserves,it is difficult to know the spatial variation trend from the point of basin. In this paper,the latest GRACE gravity satellite CSR RL05 data is used to invert the groundwater spatial variation in Haihe Basin during the time of 2005- 2009,which provides a scientific basis for the rational use of groundwater resources. First,in order to verify the reliability of the GRACE inversion results,which were compared with the data of the monitoring wells in the basin,the results show that both have consistent trend. Then analysis and discuss the space distribution of Haihe Basin groundwater reserves change,and comparative analysis with plain Groundwater Bulletin. The study results show that： Haihe Basin during time of 2005- 2009 period groundwater reserves change is in a downward trend; the magnitude of the changes is in the range of- 10 ～- 44 mm / a; most of regions decline,and the decline in Shijiazhuang,Xingtai are more serious.