The Interactive Role of Wind and Water in Functioning of Drylands: What Does the Future Hold?
The Interactive Role of Wind and Water in Functioning of Drylands: What Does the Future Hold?
复制标题
DOI：
10.1093/biosci/biy067
复制
发表时间：
2018-09-01
期刊：
影响因子：
10.1
通讯作者：
Bhattachan, Abinash
中科院分区：
文献类型：
--
作者：
Okin, Gregory S.;Sala, Osvaldo E.;Bhattachan, Abinash
旱地生态系统非生物和生物过程之间的反馈机制导致对气候年际变化的强烈敏感性。在未来的制度更高的温度，但可能增加降雨量的变化旱地预计将经历风和水的变化，这将改变植物群落的组成和景观连接的反馈在这里，我们提出了一个概念框架，了解耦合植被生产力，风沙运输，水文连接在未来气候的预期变化。这表明，更极端的气候状况将导致景观联系更加紧密，随之而来的是土壤、养分和水资源的损失。当连通性增强引发状态变化时，生态系统功能可能发生不可逆转的变化，对全球旱地的未来产生影响。
Feedback mechanisms between abiotic and biotic processes in dryland ecosystems lead to a strong sensitivity to interannual variations in climate. Under a future regime of higher temperatures but potentially increased rainfall variability drylands are anticipated to experience changes in wind and water transport that will alter plant community composition and feedback on landscape connectivity Here, we present a conceptual framework for understanding the coupling of vegetation productivity, aeolian transport, and hydrologic connectivity under anticipated changes in future climate, which suggests that a more extreme climatic regime will lead to more connected landscapes with attendant losses in soil, nutrient, and water resources. When enhanced connectivity triggers state changes, irreversible changes in ecosystem functioning can occur, with implications for the future of global drylands.