Fog drip and its relation to groundwater in the tropical seasonal rain forest of Xishuangbanna, Southwest China: a preliminary study.
Fog drip and its relation to groundwater in the tropical seasonal rain forest of Xishuangbanna, Southwest China: a preliminary study.
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DOI：
10.1016/j.watres.2004.12.002
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发表时间：
2005-03
期刊：
影响因子：
12.8
通讯作者：
W. Liu;Yi -Ping Zhang;H. Li;Yu Hong Liu
中科院分区：
文献类型：
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作者：
W. Liu;Yi -Ping Zhang;H. Li;Yu Hong Liu
对西双版纳热带季节雨林样地2002-2003年的降雨、雾滴、浅层土壤水和地下水进行了稳定同位素分析。雾滴水的δD值介于−30 ‰至+27‰之间，δ 18 O值介于−6.2 ‰至+1.9‰之间，符合δD=7.64δ 18 O +14.32的方程，被认为含有蒸发和再循环的陆地大气降水。雨水中的同位素更为贫乏，δD介于−94 ‰至−45‰之间，δ 18 O介于−13.2 ‰至−6.8‰之间。浅层土壤水的组成通常介于雨和雾滴之间，被认为是两种沃茨的混合物。但在旱季采集的土壤水中，雾滴水含量明显高于雨季。两个季节的地下水的同位素组成与雨水相似，这表明雾滴水作为地下水的补给来源并没有发挥重要作用。这些地下水被认为是完全由雨水补充的。
Rain, fog drip, shallow soil water and groundwater were collected for two years (2002–2003) for stable isotopic analysis, at a tropical seasonal rain forest site in Xshuangbanna, Southwest China. The fog drip water ranged from −30 to +27‰ in δD and −6.2 to +1.9‰ in δ18O, conforms to the equation δD=7.64δ18O+14.32, and was thought to contain water that has been evaporated and recycled terrestrial meteoric water. The rain was isotopically more depleted, and ranged from −94 to −45‰ in δD, and −13.2 to −6.8‰ in δ18O. The shallow soil water had a composition usually between those of the rain and fog drip, and was assumed to be a mixture of the two waters. However, the soil water collected in dry season appeared to contain more fog drip water than that collected in rainy season. The groundwater in both seasons had an isotopic composition similar to rainwater, suggesting that fog drip water does not play a significant role as a source of recharge for the groundwater. This groundwater was thought to be recharged solely by rainwater.