Meteorological influences on process-based spatial-temporal pattern of throughfall of a xerophytic shrub in arid lands of northern China
文献类型：期刊论文
| 作者 | Zhang, Ya-Feng; Wang, Xin-Ping; Hu, Rui; Pan, Yan-Xia |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2018-04-01 |
| 卷号 | 619页码:1003-1013 |
| 关键词 | Throughfall Spatial-temporal variability Meteorological variables Principal components analysis Caragana korshinskii |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2017.11.207 |
| 通讯作者 | Zhang, Ya-Feng(zhangyafeng1986@gmail.com) |
| 英文摘要 | Numerous field experiments had demonstrated great spatial variability and temporal stability of throughfall under tree canopies within forested ecosystems. Nonetheless, no known studies have investigated the intrastorm spatial-temporal variability of throughfall beneath xerophytic shrub canopies within arid desert ecosystems where water is typically the principal limiting factor determining the structure and dynamics of ecosystems. Here we investigated the spatial-temporal pattern of throughfall at intrastorm scale, and systematically examined the effects of meteorological variables on throughfall based on the principal components analysis (PCA) and a multiple regression model. Throughfall was monitored at 10-min intervals by placing tipping-bucket rain gauges at different radial directions beneath 3 shrubs of Caragana korshinskii during the growing season of 2016 within a water-limited arid desert ecosystem of northern China. We found the temporal heterogeneity of rainfall clearly affected the timing of throughfall beneath shrub canopies within discrete rainfall events. Throughfall also differed markedly among different radial directions beneath shrub canopies, which was found to be well associated with wind directions during rainfall events. PCA on meteorological variables indicated that three principal components accounted for 84.2% of the total variance, and we found that the second principal component (loaded strongly on rainfall amount and maximum 10-min rainfall intensity) was the dominant component controlling throughfall and its spatial variability after introducing three principal components into a multiple linear regression model. Our findings highlight the spatial-temporal variability of throughfall at the intrastorm scale, and are expected to be helpful for an improved process-based characterization and modelling of throughfall in vast arid desert ecosystems. (c) 2017 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | RAINFALL INTERCEPTION ; HOT MOMENTS ; SOIL-WATER ; FOREST ; VARIABILITY ; STEMFLOW ; CANOPY ; DESERT ; HETEROGENEITY ; ECOSYSTEMS |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS类目 | Environmental Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000424144200101 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2558088 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Zhang, Ya-Feng |
| 作者单位 | Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Shapotou Desert Res & Expt Stn, 320 Donggang West Rd, Lanzhou 730000, Gansu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Ya-Feng,Wang, Xin-Ping,Hu, Rui,et al. Meteorological influences on process-based spatial-temporal pattern of throughfall of a xerophytic shrub in arid lands of northern China[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2018,619:1003-1013. |
| APA | Zhang, Ya-Feng,Wang, Xin-Ping,Hu, Rui,&Pan, Yan-Xia.(2018).Meteorological influences on process-based spatial-temporal pattern of throughfall of a xerophytic shrub in arid lands of northern China.SCIENCE OF THE TOTAL ENVIRONMENT,619,1003-1013. |
| MLA | Zhang, Ya-Feng,et al."Meteorological influences on process-based spatial-temporal pattern of throughfall of a xerophytic shrub in arid lands of northern China".SCIENCE OF THE TOTAL ENVIRONMENT 619(2018):1003-1013. |
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来源：寒区旱区环境与工程研究所
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