Nonlinear feature of the abrupt transitions between multiple equilibria states of an ecosystem model
文献类型：期刊论文
| 作者 | Sun Guodong1,2; Mu Mu1 |
| 刊名 | Advances in atmospheric sciences
 |
| 出版日期 | 2009-03-01 |
| 卷号 | 26期号:2页码:293-304 |
| 关键词 | Nonlinear feature Abrupt transition Grassland and desert ecosystem Shading effect |
| ISSN号 | 0256-1530 |
| DOI | 10.1007/s00376-009-0293-8 |
| 通讯作者 | Sun guodong(sungd@mail.iap.ac.cn) |
| 英文摘要 | Based on a five-variable theoretical ecosystem model, the stability of equilibrium state and the nonlinear feature of the transition between a grassland state and a desert state are investigated. the approach of the conditional nonlinear optimal perturbations (cnops), which are the nonlinear generalization of the linear singular vectors (lsvs), is adopted. the numerical results indicate that the linearly stable grassland and desert states are nonlinearly unstable to large enough initial perturbations on the condition that the moisture index mu satisfies 0.3126 < mu < 0.3504. the perturbations represent some kind of anthropogenic influence and natural factors. the results obtained by cnops, lsvs and lyapunov vectors (lvs) are compared to analyze the nonlinear feature of the transition between the grassland state and the desert state. besides this, it is shown that the five-variable model is superior to the three-variable model in providing more visible signals when the transitions occur. |
| WOS关键词 | FINITE-AMPLITUDE PERTURBATIONS ; GRASS FIELD ECOSYSTEM ; DYNAMIC-MODEL ; 2 VARIABLES ; VEGETATION ; SYSTEM ; SENSITIVITY ; DROUGHT ; CLIMATE ; SAHEL |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| WOS类目 | Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000264090300012 |
| 出版者 | SCIENCE PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2393674 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Sun Guodong |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Numer Modeling Atmospher Sci & Geop, Inst Atmospher Phys, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun Guodong,Mu Mu. Nonlinear feature of the abrupt transitions between multiple equilibria states of an ecosystem model[J]. Advances in atmospheric sciences,2009,26(2):293-304. |
| APA | Sun Guodong,&Mu Mu.(2009).Nonlinear feature of the abrupt transitions between multiple equilibria states of an ecosystem model.Advances in atmospheric sciences,26(2),293-304. |
| MLA | Sun Guodong,et al."Nonlinear feature of the abrupt transitions between multiple equilibria states of an ecosystem model".Advances in atmospheric sciences 26.2(2009):293-304. |
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来源：中国科学院大学
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