| 来源类型 | Article |
| 规范类型 | 其他 |
| DOI | 10.1371/journal.pone.0137497 |
| Resilience and alternative stable states of tropical forest landscapes under shifting cultivation regimes. | |
| Magnuszewski P; Ostasiewicz K; Chazdon R; Salk C; Pajak M; Sendzimir J | |
| 发表日期 | 2015 |
| 出处 | PLoS ONE 10 (9): e0137497 |
| 出版年 | 2015 |
| 语种 | 英语 |
| 摘要 | Shifting cultivation is a traditional agricultural practice in most tropical regions of the world and has the potential to provide for human livelihoods while hosting substantial biodiversity. Little is known about the resilience of shifting cultivation to increasing agricultural demands on the landscape or to unexpected disturbances. To investigate these issues, we develop a simple social-ecolgical model and implement it with literature-derived ecological parameters for six shifting cultivation landscapes from three continents. Analyzing the model with the tools of dynamical systems analysis, we show that such landscapes exhibit two stable states, one characterized by high forest cover and agricultural productivity, and another with much lower values of these traits. For some combinations of agricultural pressure and ecological parameters both of these states can potentially exist, and the actual state of the forest depends critically on its historic state. In many cases, the landscapes' 'ecological resilience', or amount of forest that could be destroyed without shifting out of the forested stability domain, declined substantially at lower levels of agricultural pressure than would lead to maximum productiviy. A measure of 'engineering resilience',- the recovery time from standardized disturbances, was independent of ecological resilience. These findings suggest that maximization of short-term agricultural output may have counterproductive impacts on the long-term productivity of shifting cultivation landscapes and the persistence of forested areas. |
| 主题 | Water (WAT) |
| URL | http://pure.iiasa.ac.at/id/eprint/11338/ |
| 来源智库 | International Institute for Applied Systems Analysis (Austria) |
| 引用统计 | |
| 资源类型 | 智库出版物 |
| 条目标识符 | http://119.78.100.153/handle/2XGU8XDN/130234 |
| 推荐引用方式 GB/T 7714 | Magnuszewski P,Ostasiewicz K,Chazdon R,et al. Resilience and alternative stable states of tropical forest landscapes under shifting cultivation regimes.. 2015. |
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| 文件名称/大小 | 资源类型 | 版本类型 | 开放类型 | 使用许可 | ||
| Resilience%20and%20A（1496KB） | 智库出版物 | 限制开放 | CC BY-NC-SA | 浏览 | ||
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