Modeling revealed the effect of root dynamics on the water adaptability of phreatophytes
文献类型：期刊论文
| 作者 | Wang, Tianye4; Wang, Ping1,3; Wu, Zening4; Yu, Jingjie1,3; Pozdniakov, Sergey P.2; Guan, Xinjian4; Wang, Huiliang4; Xu, Hongshi4; Yan, Denghua4 |
| 刊名 | AGRICULTURAL AND FOREST METEOROLOGY
 |
| 出版日期 | 2022-06-01 |
| 卷号 | 320页码:12 |
| 关键词 | Root dynamics Phreatophytes Evapotranspiration Groundwater Drought resilience |
| ISSN号 | 0168-1923 |
| DOI | 10.1016/j.agrformet.2022.108959 |
| 通讯作者 | Wang, Ping(wangping@igsnrr.ac.cn) ; Xu, Hongshi(xhstju@163.com) |
| 英文摘要 | Given their high root plasticity, phreatophytes have flexible water use strategies and can dynamically adjust their rooting depth for the effective uptake of water from soils and shallow aquifers. By this strategy, phreatophytes are strongly ecologically resilient to water stress and thus are commonly grown in drylands. In this study, we used a modified soil-hydrological model, Hydrus-1D, with the implementation of a dynamic root scheme to analyze the role of the distribution and dynamics of roots in simulating evapotranspiration (ET) of phreatophytes with declining groundwater levels (GWLs). The results showed that the root mean square error (RMSE) between simulated and observed ET was reduced by approximately 39% using a model with a more authentic root distribution than the generic root profile. Static root schemes cannot portray the adaptation of phreatophytes to GWL changes well, but their performance can be enhanced by introducing a water compensation scheme, which, however, has a weakness related to the difficulties in parameter calibration. The ET was well retrieved by the model with the dynamic root scheme. Its RMSE was 40% to 70% less than those of the static models, and the Nash-Sutcliffe efficiency reached 0.94, demonstrating the importance of root dynamics in simulating phreatophytic root water uptake. In addition, multiscenario estimations showed nonlinear responses of phreatophyte ET to the rate of GWL decrease (RGWD); that is, as the RGWD accelerated, plant adaptation showed three different stages: no water stress, adaptable and unadaptable. The resistance of plants to water stress decreases with decreasing root growth rate. The identified key ecological thresholds for the RGWD provide a reference for ecological protection in arid areas. We highlight the importance of root processes in the plant response to water stress and suggest that more attention should be given to the root adaptation process in Earth system models. |
| WOS关键词 | COMMUNITY LAND MODEL ; DEEP ROOTS ; SOIL-WATER ; GROUNDWATER ; DROUGHT ; GROWTH ; TRANSPIRATION ; TABLE ; ECOSYSTEM ; CLIMATE |
| 资助项目 | Natural Science Foun-dation of Henan[222300420327] ; National Natural Science Foundation of China[42071042] ; National Natural Science Foundation of China[41877165] ; NSFC-RFBR[42111530027] ; NSFC-RFBR[21-55-53017 ????_?] ; Key Research Projects of Henan Higher Education Institutions[22A170020] ; Special Exchange Program of the Chinese Academy of Sciences[2022-2023] |
| WOS研究方向 | Agriculture ; Forestry ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000795700800001 |
| 出版者 | ELSEVIER |
| 资助机构 | Natural Science Foun-dation of Henan ; National Natural Science Foundation of China ; NSFC-RFBR ; Key Research Projects of Henan Higher Education Institutions ; Special Exchange Program of the Chinese Academy of Sciences |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/177049]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Wang, Ping; Xu, Hongshi |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China 2.Lomonosov Moscow State Univ, Dept Hydrogeol, Moscow 119899, Russia 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Zhengzhou Univ, Sch Water Conservancy Engn, 100 Sci Ave, Zhengzhou 450001, Henan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Tianye,Wang, Ping,Wu, Zening,et al. Modeling revealed the effect of root dynamics on the water adaptability of phreatophytes[J]. AGRICULTURAL AND FOREST METEOROLOGY,2022,320:12. |
| APA | Wang, Tianye.,Wang, Ping.,Wu, Zening.,Yu, Jingjie.,Pozdniakov, Sergey P..,...&Yan, Denghua.(2022).Modeling revealed the effect of root dynamics on the water adaptability of phreatophytes.AGRICULTURAL AND FOREST METEOROLOGY,320,12. |
| MLA | Wang, Tianye,et al."Modeling revealed the effect of root dynamics on the water adaptability of phreatophytes".AGRICULTURAL AND FOREST METEOROLOGY 320(2022):12. |
入库方式： OAI收割
来源：地理科学与资源研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。