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DOI | 10.1088/1748-9326/ad29aa |
Mitigating drought mortality by incorporating topography into variable forest thinning strategies | |
发表日期 | 2024 |
ISSN | 1748-9326 |
起始页码 | 19 |
结束页码 | 3 |
卷号 | 19期号:3 |
英文摘要 | Drought-induced productivity reductions and tree mortality have been increasing in recent decades in forests around the globe. Developing adaptation strategies hinges on an adequate understanding of the mechanisms governing the drought vulnerability of forest stands. Prescribed reduction in stand density has been used as a management tool to reduce water stress and wildfire risk, but the processes that modulate fine-scale variations in plant water supply and water demand are largely missing in ecosystem models. We used an ecohydrological model that couples plant hydraulics with groundwater hydrology to examine how within-stand variations in tree spatial arrangements and topography might mitigate forest vulnerability to drought at individual-tree and stand scales. Our results demonstrated thinning generally ameliorated plant hydraulic stress and improved carbon and water fluxes of the remaining trees, although the effectiveness varied by climate and topography. Variable thinning that adjusted thinning intensity based on topography-mediated water availability achieved higher stand productivity and lower mortality risk, compared to evenly-spaced thinning at comparable intensities. The results from numerical experiments provided mechanistic evidence that topography mediates the effectiveness of thinning and highlighted the need for an explicit consideration of within-stand heterogeneity in trees and abiotic environments when designing forest thinning to mitigate drought impacts. |
英文关键词 | drought mitigation; thinning treatments; tree neighborhood; topography; ecohydrological modeling; mortality risk |
语种 | 英语 |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS记录号 | WOS:001174189900001 |
来源期刊 | ENVIRONMENTAL RESEARCH LETTERS
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文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/296079 |
作者单位 | New Jersey Institute of Technology; Northern Arizona University; United States Department of Agriculture (USDA); Universidad Politecnica de Madrid; Nanjing Normal University; Nanjing Normal University; University of Wyoming |
推荐引用方式 GB/T 7714 | . Mitigating drought mortality by incorporating topography into variable forest thinning strategies[J],2024,19(3). |
APA | (2024).Mitigating drought mortality by incorporating topography into variable forest thinning strategies.ENVIRONMENTAL RESEARCH LETTERS,19(3). |
MLA | "Mitigating drought mortality by incorporating topography into variable forest thinning strategies".ENVIRONMENTAL RESEARCH LETTERS 19.3(2024). |
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