珲春盆地浅层地下水年龄及其水循环特征

The Age and Water Cycle of Shallow Groundwater in Hunchun Basin

摘要: 利用³H法对珲春盆地浅层地下水年龄进行了计算，为珲春盆地地下水资源管理和水资源环境承载力研究提供依据。结果表明：总体上，珲春盆地浅层地下水年龄均小于30 a，地下水循环交替较强。从山前地带向珲春河河谷地带、从东北向西南方向地下水年龄逐渐从小于10 a增大到大于20 a。年龄为小于10 a、10~20 a、大于20 a的地下水分布面积占珲春盆地总面积的比例分别为51%、42%、7%。七户洞村、平安村、和平村等浅层地下水补给区地下水年龄小于10 a，地下水循环交替强烈；中华村、图鲁村、春景村等浅层地下水径流区地下水年龄为10~20 a，与补给区相比地下水循环交替减弱；八二村、古城村等地是珲春盆地浅层地下水排泄区，地下水年龄大于20 a，地下水循环交替较弱。

Abstract: The ³H method is applied to determine the age of shallow groundwater in Hunchun basin, which provides basis for the study of groundwater resource management and carrying capacity in Hunchun basin. It can be concluded that the age of the shallow groundwater in Hunchun basin is younger than 30 a in general and the groundwater cycle is fast. The age of shallow groundwater increases from less than 10 a to more than 20 a from the piedmont to the Hunchun River valley and from the northeast to the southwest. The groundwater distribution area, with age less than 10 a, between 10~20 and more than 20 a, accounts for 39%, 10% and 51% of the total area of Hunchun basin. The groundwater age of Qihudong village, Pingan village, Heping village which are shallow groundwater recharge area is less than 10 a, which means the groundwater circulation is fastest. The groundwater age of Zhonghua village, Tulu village, Chunjing village which are shallow groundwater runoff area is 10 ~ 20 a, which means the groundwater circulation is slower than the recharge area. The groundwater age of Baer village, Gucheng village which are shallow groundwater discharge area is more than 20 a, which means the groundwater circulation is slower than the recharge area and runoff area.