...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Managing ecological thresholds in coupled environmental-human systems
【24h】

Managing ecological thresholds in coupled environmental-human systems

机译：在环境与人类系统耦合中管理生态阈值

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Many ecosystems appear subject to regime shifts—abrupt changes from one state to another after crossing a threshold or tipping point. Thresholds and their associated stability landscapes are determined within a coupled socioeconomic-ecological system (SES) where human choices, including those of managers, are feedback responses. Prior work has made one of two assumptions about managers: that they face no institutional constraints, in which case the SES may be managed to be fairly robust to shocks and tipping points are of little importance, or that managers are rigidly constrained with no flexibility to adapt, in which case the inferred thresholds may poorly reflect actual managerial flexibility. We model a multidimensional SES to investigate how alternative institutions affect SES stability landscapes and alter tipping points. With institutionally dependent human feedbacks, the stability landscape depends on institutional arrangements. Strong institutions that account for feedback responses create the possibility for desirable states of the world and can cause undesirable states to cease to exist. Intermediate institutions interact with ecological relationships to determine the existence and nature of tipping points. Finally, weak institutions can eliminate tipping points so that only undesirable states of the world remain.
机译：许多生态系统似乎会发生政权转移，从一种状态突然转变为另一种状态 超过阈值或临界点后。阈值及其相关的稳定性状况是在耦合的社会经济生态系统（SES）中确定的，在此系统中，包括管理人员在内的人类选择都是反馈响应。先前的工作对管理人员做出了两个假设之一：他们没有机构约束，在这种情况下，SES可能被管理成对冲击相当稳健，临界点不那么重要，或者管理人员受到严格约束而没有灵活性来应对。适应，在这种情况下，推断的阈值可能无法很好地反映实际的管理灵活性。我们对多维SES进行建模，以调查替代机构如何影响SES稳定性状况并改变临界点。在机构依赖人类的反馈的情况下，稳定态势取决于机构安排。负责反馈响应的强大机构为世界所希望的状态创造了可能性，并可能导致不希望的状态不复存在。中间机构与生态关系相互作用，以确定临界点的存在和性质。最后，薄弱的机构可以消除转折点，从而仅保留世界的不良状态。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号