Identifying hydrological conditions of the Pihe River catchment in the Chengdu Plain based on spatio-temporal distribution of 2H and 18O
Identifying hydrological conditions of the Pihe River catchment in the Chengdu Plain based on spatio-temporal distribution of 2H and 18O
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DOI：
10.1007/s10967-020-07163-z
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发表时间：
2020-05-11
影响因子：
1.6
通讯作者：
Li, Hongxia
中科院分区：
文献类型：
--
作者：
Chen, Ke;Meng, Yuchuan;Li, Hongxia
利用降水、河水和地下水中的稳定同位素组成，对中国西南皮河流域的水文条件进行了研究。降水和河水中的同位素存在明显的季节变化，河水对降水的响应有1个月的延迟。在蒸发的影响下，河水逐渐丰富。但受外水源补给的影响，蒸发率并不随水流距离的增大而严格增大。地下水的季节同位素值波动最小。在旱季，河流水对地下水的供应多于降水。
Stable isotope composition in precipitation, river water, and groundwater was used to investigate the hydrological conditions in the Pihe River catchment of Southwest China. Significant seasonal isotopic variations exist in precipitation and river water, and there is 1-month delay in the river water response to precipitation. The river water is gradually enriched under the influence of evaporation. However, due to the influence of recharge from external water source, the evaporation ratios do not strictly increase with the flow distance. The seasonal isotopic values in groundwater fluctuate the least. River water supplies groundwater more than precipitation in dry season.