欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
利用溴离子作为人工示踪剂，研究了华北平原典型区地下水补给量。分析了灌溉方式、土地利用类型、土壤类型和地下水埋深对地下水补给的影响，同时揭示了补给强度的时间变异性。结果表明，平均年补给强度为90mm／a，平均年补给系数为12％；有灌溉区平均补给强度和补给系数大于无灌溉区；第1年补给强度普遍大于第2年，表现出明显的时间变异性。在地下水埋深较浅地区示踪剂质量浓度峰值易受地下水位波动的影响，利用溴离子示踪法受到一定程度的限制。
英文摘要：
Bromide was used as tracer to determine groundwater recharge in North China Plain,and the im- pacts of different irrigation schemes, land uses, soil types and groundwater levels on recharge as well as its temporal variation were analyzed. The results showed that average annual recharge rate and recharge coef- ficient were 90 mm/a and 12%, respectively; The average recharge rate and recharge coefficient in irriga- ted land were greater than those in non-irrigated land. Recharge rate in the first year was greater than that in the second year, which reflected temporal variability of recharge. The tracer method may not be applica- ble where groundwater table was shallow and the tracer peak was vulnerable to water level fluctuation.
同期刊论文项目
同项目期刊论文
期刊信息
位置：