Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017WR020467 |
A vegetation-focused soil-plant-atmospheric continuum model to study hydrodynamic soil-plant water relations | |
Deng, Zijuan1,2,3; Guan, Huade1,2; Hutson, John1; Forster, Michael A.4,5; Wang, Yunquan6; Simmons, Craig T.1,2 | |
2017-06-01 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2017 |
卷号 | 53期号:6 |
文章类型 | Article |
语种 | 英语 |
国家 | Australia; Peoples R China |
英文摘要 | A novel simple soil-plant-atmospheric continuum model that emphasizes the vegetation's role in controlling water transfer (v-SPAC) has been developed in this study. The v-SPAC model aims to incorporate both plant and soil hydrological measurements into plant water transfer modeling. The model is different from previous SPAC models in which v-SPAC uses (1) a dynamic plant resistance system in the form of a vulnerability curve that can be easily obtained from sap flow and stem xylem water potential time series and (2) a plant capacitance parameter to buffer the effects of transpiration on root water uptake. The unique representation of root resistance and capacitance allows the model to embrace SPAC hydraulic pathway from bulk soil, to soil-root interface, to root xylem, and finally to stem xylem where the xylem water potential is measured. The v-SPAC model was tested on a native tree species in Australia, Eucalyptus crenulata saplings, with controlled drought treatment. To further validate the robustness of the v-SPAC model, it was compared against a soil-focused SPAC model, LEACHM. The v-SPAC model simulation results closely matched the observed sap flow and stem water potential time series, as well as the soil moisture variation of the experiment. The v-SPAC model was found to be more accurate in predicting measured data than the LEACHM model, underscoring the importance of incorporating root resistance into SPAC models and the benefit of integrating plant measurements to constrain SPAC modeling. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000405997000028 |
WOS关键词 | MONTE-CARLO-SIMULATION ; ROOT WATER ; SAP FLOW ; HYDRAULIC CONDUCTIVITY ; POROUS-MEDIA ; TREE ; STORAGE ; CAPACITANCES ; CONDUCTANCE ; CAVITATION |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/20851 |
专题 | 资源环境科学 |
作者单位 | 1.Flinders Univ S Australia, Sch Environm, Adelaide, SA, Australia; 2.Natl Ctr Groundwater Res & Training, Bedford Pk, SA, Australia; 3.Univ Sydney, Ctr Carbon Water & Food, Fac Agr & Environm, Sydney, NSW, Australia; 4.Univ Queensland, Sch Agr & Food Sci, Brisbane, Qld, Australia; 5.Edaph Sci Pty Ltd, Port Macquarie, NSW, Australia; 6.China Univ Geosci, Sch Environm Studies, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | Deng, Zijuan,Guan, Huade,Hutson, John,et al. A vegetation-focused soil-plant-atmospheric continuum model to study hydrodynamic soil-plant water relations[J]. WATER RESOURCES RESEARCH,2017,53(6). |
APA | Deng, Zijuan,Guan, Huade,Hutson, John,Forster, Michael A.,Wang, Yunquan,&Simmons, Craig T..(2017).A vegetation-focused soil-plant-atmospheric continuum model to study hydrodynamic soil-plant water relations.WATER RESOURCES RESEARCH,53(6). |
MLA | Deng, Zijuan,et al."A vegetation-focused soil-plant-atmospheric continuum model to study hydrodynamic soil-plant water relations".WATER RESOURCES RESEARCH 53.6(2017). |
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