Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1002/hyp.13742 |
Sensitivity of nitrate concentration-discharge patterns to soil nitrate distribution and drainage properties in the vertical dimension | |
Chen, Xiaoli; Tague, Christina L.; Melack, John M.; Keller, Arturo A. | |
通讯作者 | Chen, Xiaoli |
来源期刊 | HYDROLOGICAL PROCESSES
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ISSN | 0885-6087 |
EISSN | 1099-1085 |
出版年 | 2020 |
卷号 | 34期号:11页码:2477-2493 |
英文摘要 | We propose a conceptual model that examines the 'variable source area' (VSA) and 'nitrate flushing' hypothesis in the vertical direction, and use this approach to explain nitrate concentration-discharge relationships in a semi-arid watershed. We use an eco-hydrology simulation model (RHESSys) to show that small changes in the vertical distribution of nitrate mass and their interaction with soil hydraulic conductivity can result in abrupt changes in the nitrate concentration-discharge relationship. We show that the estimated concentration-discharge relationship is sensitive to the parameters governing soil vertical nitrate distribution and soil hydraulic conductivity, at both patch scale and watershed scale, where lateral redistribution of water and nitrate is also accounted for. Given heterogeneity in nitrogen inputs, uptake processes, soil drainage and storage processes, substantial variation in parameters that describe rate of changes in vertical distribution of soil nitrate and hydraulic properties is likely both within and between watersheds. Thus, we argue that vertical 'variable source area' processes may be as important as lateral VSA in determining concentration discharge relationships. |
英文关键词 | concentration-discharge relationship nitrate vertical distribution variable source area |
类型 | Article |
语种 | 英语 |
国家 | USA |
开放获取类型 | Green Published, Bronze |
收录类别 | SCI-E |
WOS记录号 | WOS:000520777600001 |
WOS关键词 | TEMPERATE FORESTS ; NITROGEN UPTAKE ; EXPORT ; CALIFORNIA ; WATER ; NUTRIENT ; CLIMATE ; RIVER ; FLOW ; AVAILABILITY |
WOS类目 | Water Resources |
WOS研究方向 | Water Resources |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/314690 |
作者单位 | Univ Calif Santa Barbara, Bren Sch Environm Sci & Management, Santa Barbara, CA 93106 USA |
推荐引用方式 GB/T 7714 | Chen, Xiaoli,Tague, Christina L.,Melack, John M.,et al. Sensitivity of nitrate concentration-discharge patterns to soil nitrate distribution and drainage properties in the vertical dimension[J],2020,34(11):2477-2493. |
APA | Chen, Xiaoli,Tague, Christina L.,Melack, John M.,&Keller, Arturo A..(2020).Sensitivity of nitrate concentration-discharge patterns to soil nitrate distribution and drainage properties in the vertical dimension.HYDROLOGICAL PROCESSES,34(11),2477-2493. |
MLA | Chen, Xiaoli,et al."Sensitivity of nitrate concentration-discharge patterns to soil nitrate distribution and drainage properties in the vertical dimension".HYDROLOGICAL PROCESSES 34.11(2020):2477-2493. |
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