Driver-system state interaction in regime shifts: A model study of desertification in drylands
文献类型：期刊论文
| 作者 | Chen, Ning1,2; Wang, Xin-ping1 |
| 刊名 | ECOLOGICAL MODELLING
 |
| 出版日期 | 2016-11-10 |
| 卷号 | 339页码:1-6 |
| 关键词 | Desertification Dryland ecosystems Drift potential Regime shift Tipping point Bi-stability region |
| ISSN号 | 0304-3800 |
| DOI | 10.1016/j.ecolmodel.2016.08.006 |
| 通讯作者 | Chen, Ning(chenning.cn2015@gmail.com) |
| 英文摘要 | An ecosystem may abruptly switch into a contrasting stable state at a critical threshold under the effect of external drivers, a phenomenon called regime shifts. However, drivers are generally assumed to be independent of system states, and thus associated driver-system state interaction is largely ignored when studying regime shifts. With dryland ecosystems as study objective, this study used a mean field model with drift potential as driver to investigate the influences of driver-system state interaction on dynamics of regime shifts. Our results showed following three aspects of influences of the interaction. (1) The interaction pushed the equilibria of regime shifts as a whole into higher drift potential, especially for the forward path. Under annual rainfall of 150 mm, 300 mm and 500 mm, tipping points of the upper branches moved forward 140 VU, 151 VU and 152 VU with strength of the interaction of 200 VU relative to these with strength of the interaction of 0 VU, respectively. (2) The interaction could expand the bistability region of regime shifts in driver space, e.g., from 125 VU (annual rainfall of 150 mm), 181 VU (annual rainfall of 300 mm) and 209 VU (annual rainfall of 500 mm) under the interaction of 0 VU up to 145 VU, 257 VU and 290 VU under the interaction of 200 VU, respectively. (3) The interaction might repel ecosystems away from the middle range of system states. These results suggest that the driver-system state interaction should be considered in the studies of regime shifts, and thus to better understand, predict and combat desertification in practice. (C) 2016 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | CLIMATE VARIABILITY ; VEGETATION DYNAMICS ; SOUTHWEST KALAHARI ; LINKING THEORY ; WIND EROSION ; SAND DUNES ; COVER ; ECOSYSTEMS ; DESERT ; SOIL |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS类目 | Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000384871000001 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2557538 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Chen, Ning |
| 作者单位 | 1.Chinese Acad Sci, Shapotou Desert Res & Expt Stn, Northwest Inst Ecoenvironm & Resources, 320 Donggang West Rd, Lanzhou 730000, Gansu, Peoples R China 2.Univ Chinese Acad Sci, 19 Yuquan Rd, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Ning,Wang, Xin-ping. Driver-system state interaction in regime shifts: A model study of desertification in drylands[J]. ECOLOGICAL MODELLING,2016,339:1-6. |
| APA | Chen, Ning,&Wang, Xin-ping.(2016).Driver-system state interaction in regime shifts: A model study of desertification in drylands.ECOLOGICAL MODELLING,339,1-6. |
| MLA | Chen, Ning,et al."Driver-system state interaction in regime shifts: A model study of desertification in drylands".ECOLOGICAL MODELLING 339(2016):1-6. |
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来源：寒区旱区环境与工程研究所
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