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首页> 外文期刊>International journal of ecohydrology and hydrobiology >Comparison of evapotranspiration between two alpine type wetland ecosystems in Qinghai lake basin of Qinghai-Tibet Plateau
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Comparison of evapotranspiration between two alpine type wetland ecosystems in Qinghai lake basin of Qinghai-Tibet Plateau

机译：青海高原青海湖盆地两种高山湿地生态系统之间蒸散的比较

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摘要

Alpine wetland ecosystems play significant roles in water regulation and regional ecological safety on the Qinghai-Tibet Plateau due to large water conservation potential. The knowledge of evapotranspiration (ET) in various alpine wetland ecosystems is of great significance for understanding the water balance of wetland ecosystems and carrying out eco-environment conservation. Therefore, two alpine wetland ecosystems as lakeside and headwater of Qinghai Lake basin were selected, and their ET characteristics and influencing factors were researched over two years. The daily ET in the lakeside ecosystem showed 'double peak' curve, and the headwater ecosystem showed the 'multiple peak' ET curve. The monthly ETs in two respective wetlands ranged from 9.88 to 111.56 mm and from 0.23 to 75.5 mm, respectively. The annual ET in the lakeside ecosystem was averagely 1.89 times more than that of the headwater. Stepwise multiple linear regressions indicated that monthly average net radiation (Rn) and leaf area index (LAI) explained 96% variance in monthly ET in the lakeside ecosystem; R-n and monthly average wind speed (WS) explained 94% variance in monthly ET in the headwater ecosystem. These results indicated that the ET is variable in two alpine wetland ecosystems and R-n was their primary driving factor on monthly scale. (C) 2020 European Regional Centre for Ecohydrology of the Polish Academy of Sciences. Published by Elsevier B.V. All rights reserved.
机译：Alpine Wetland Ecosystems由于大量的水资源保护潜力，在青藏高原上的水监管和区域生态安全起见。各种高山湿地生态系统中蒸散（ET）的知识对于了解湿地生态系统的水平衡以及进行生态环境保护的巨大意义。因此，选择了两年的湖滨湖畔和青海湖盆地湖边的两家高山湿地生态系统，两年来研究了他们的ET特性和影响因素。湖边生态系统的每日等表明，“双峰”曲线，灯泡生态系统显示了“多峰值”ET曲线。两个各自湿地的每月ETS分别为9.88至111.56毫米，分别为0.23至75.5毫米。湖畔生态系统中的年度ET平均比下面的比例为1.89倍。逐步多个线性回归表明，每月平均净辐射（RN）和叶面积指数（LAI）在湖滨生态系统中每月ET中的96％方差解释了96％; R-N和每月平均风速（WS）在马力水系统中的每月ET中解释了94％的差异。这些结果表明，ET在两种高山湿地生态系统中是可变的，R-N是每月规模的主要驱动因子。 （c）2020年欧洲区域科学科学院生态学学中心。 elsevier b.v出版。保留所有权利。

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