Effects of rainfall intensity and intermittency on woody vegetation cover and deep soil moisture in dryland ecosystems
文献类型：期刊论文
| 作者 | Zhang, Ding-Hai1,2; Li, Xin-Rong1; Zhang, Feng2; Zhang, Zhi-Shan1; Chen, Yong-Le1 |
| 刊名 | JOURNAL OF HYDROLOGY
 |
| 出版日期 | 2016-12-01 |
| 卷号 | 543页码:270-282 |
| 关键词 | Woody vegetation cover Deep soil moisture Intensity and intermittency of precipitation Eco-hydrological model |
| ISSN号 | 0022-1694 |
| DOI | 10.1016/j.jhydrol.2016.10.003 |
| 通讯作者 | Li, Xin-Rong(lxinrong@lzb.ac.cn) |
| 英文摘要 | Identifying the relationship between the stochastic daily rainfall regime and the dynamics of plants and soil moisture is fundamental for the sustainable management of dryland ecosystems in a context of global climate change. An eco-hydrological model that couples the dynamics of woody vegetation cover and deep soil moisture (typically with a depth interval of 30-150 cm) was used to investigate the effect of stochastic intensity and the intermittency of precipitation on soil moisture in this deep interval, which affects woody vegetation cover. Our results suggest that the precipitation intensity and intermittency play an important role in the dynamics of wood vegetation cover and deep soil moisture. In arid and semiarid regions, as the annual precipitation increased, the rate of woody vegetation cover increased as a power-law function, and the deep soil moisture increased exponentially. For a given annual rainfall, there were positive correlations between the rainfall intensity (or rainfall intermittency) and both the woody vegetation cover and deep soil moisture. The positive correlations between wood vegetation cover and both rainfall intensity and intermittency may decrease with increases in the precipitation intensity or precipitation intermittency. The positive correlations between deep soil moisture and both rainfall intensity and rainfall intermittency increase as the precipitation intensity or precipitation intermittency increases. Moreover, these positive correlations may increase with increases in the mean annual rainfall. Our results emphasize the importance of daily precipitation variations in controlling the responses of woody vegetation cover and deep soil moisture to climate variations in arid and semiarid regions. Our model can aid the understanding of rainfall processes and indicates that increases in rainfall intensity or rainfall intermittency may lead to an increase in woody vegetation cover and deep soil moisture given an invariable annual rainfall regime in dryland ecosystems. (C) 2016 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | TREE-GRASS COEXISTENCE ; WATER-CONTROLLED ECOSYSTEMS ; TENGGER DESERT ; SAVANNA ECOSYSTEMS ; SEMIARID SAVANNAS ; HYDROLOGIC PROCESSES ; SPECIES COEXISTENCE ; LIMITED ECOSYSTEMS ; REVEGETATED STAND ; AFRICAN SAVANNAS |
| WOS研究方向 | Engineering ; Geology ; Water Resources |
| WOS类目 | Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000390735900007 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2557496 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Li, Xin-Rong |
| 作者单位 | 1.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Shapotou Desert Res & Expt Stn, Lanzhou 730000, Peoples R China 2.Gansu Agr Univ, Coll Sci, Ctr Quantitat Biol, Lanzhou 730070, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Ding-Hai,Li, Xin-Rong,Zhang, Feng,et al. Effects of rainfall intensity and intermittency on woody vegetation cover and deep soil moisture in dryland ecosystems[J]. JOURNAL OF HYDROLOGY,2016,543:270-282. |
| APA | Zhang, Ding-Hai,Li, Xin-Rong,Zhang, Feng,Zhang, Zhi-Shan,&Chen, Yong-Le.(2016).Effects of rainfall intensity and intermittency on woody vegetation cover and deep soil moisture in dryland ecosystems.JOURNAL OF HYDROLOGY,543,270-282. |
| MLA | Zhang, Ding-Hai,et al."Effects of rainfall intensity and intermittency on woody vegetation cover and deep soil moisture in dryland ecosystems".JOURNAL OF HYDROLOGY 543(2016):270-282. |
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来源：寒区旱区环境与工程研究所
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