Using stable isotopes to determine sources of fog drip in a tropical seasonal rain forest of Xishuangbanna, SW China
Using stable isotopes to determine sources of fog drip in a tropical seasonal rain forest of Xishuangbanna, SW China
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DOI：
10.1016/j.agrformet.2006.11.009
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发表时间：
2007-03
影响因子：
6.2
通讯作者：
Wenjie Liu;W. Liu;Pengju Li;Lei Gao;You-xin Shen;Pingyuan Wang;Yiping Zhang;H. Li
中科院分区：
文献类型：
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作者：
Wenjie Liu;W. Liu;Pengju Li;Lei Gao;You-xin Shen;Pingyuan Wang;Yiping Zhang;H. Li
为了确定雾滴的可能来源，在西双版纳中国热带季节雨林立地连续3年(2002年至2004年)采集了降雨、雾滴、穿透雨、树干流量、溪水、河水、池塘水和土壤水的样品，进行了稳定同位素分析。我们发现，辐射雾主要是通过池塘、河流和土壤的蒸发以及森林的蒸散产生的。分析表明，从溪流中蒸发的量是有限的。此外，在旱季(低绝对湿度)产生的辐射雾比在雨季(高绝对湿度)产生的雾含有更多的陆地循环水。森林蒸散量似乎是最大的部分，但需要一个更密集的抽样方案来分配不同雾源的相对贡献。
To identify the possible sources of fog drip, samples of rainfall, fog drip, throughfall, stemflow, stream water, river water, pond water and soil water were collected for 3 years (2002–2004) for stable isotopic analysis, at a tropical seasonal rain forest site in Xishuangbanna, Southwest China. We found that radiation fog is produced mainly through evaporation from pond, river, and soil, and through forest evapotranspiration. The analyses suggest that evaporation from the stream is limited. In addition, radiation fog produced during the dry season (low absolute humidity) contained more terrestrially recycled water than fog produced during the rainy season (high absolute humidity). Forest evapotranspiration appears to be the largest fraction, but a more intense sampling scheme will be needed to assign the relative contribution of the different sources of fog.