Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | DOI10.1088/1748-9326/abaad9 |
Alignment of tree phenology and climate seasonality influences the runoff response to forest cover loss | |
James Knighton; Varsha Vijay; Margaret Palmer | |
2020-10-02 | |
发表期刊 | Environmental Research Letters
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出版年 | 2020 |
英文摘要 | Trees shape the critical zone and modulate terrestrial water storage yet observed streamflow responses to forest cover change vary. Differences in catchment area, soil water storage, management practices, tree species, and climate are among the many explanations proposed for heterogeneous hydrologic responses. We addressed evidence for the hypothesis that mean annual temperature (MAT) and the phase shift between precipitation and enhanced vegetation index (EVI) peaks, θ, explain a significant amount of the variation in hydrologic response to forest cover loss. We selected 50 catchments with daily streamflow records spanning eight nations and seven climate regions. Categorical clustering of catchments was performed with MAT, θ, minimum EVI, catchment area, and percentage forest loss. Similar storm event runoff ratio responses to deforestation were best clustered by MAT and θ. High MAT tropical monsoonal catchments (Brazil, Myanmar, and Liberia) exhibited minimal evidence of increasing runoff ratios (increases observed in 9% of catchments). Low MAT subarctic, cold semi-arid, and humid continental catchments (US, Canada, and Estonia) showed consistent runoff increases around the time of snowmelt (94%). The deforestation runoff responses of temperate and subtropical catchments with Mediterranean, humid, and oceanic climates depended strongly on θ. We observe increased runoff following forest loss in a majority of catchments (90%) where precipitation peaks followed peak growing season (max EVI) (US). In contrast, where precipitation peaks preceded the growing season (South Africa and Australia) there was less evidence of increased runoff (25% of catchments). This research supports the strategic implementation of native forest conservation or restoration for simultaneously mitigating the effects of global climate change and regional or local surface runoff. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/297803 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | James Knighton,Varsha Vijay,Margaret Palmer. Alignment of tree phenology and climate seasonality influences the runoff response to forest cover loss[J]. Environmental Research Letters,2020. |
APA | James Knighton,Varsha Vijay,&Margaret Palmer.(2020).Alignment of tree phenology and climate seasonality influences the runoff response to forest cover loss.Environmental Research Letters. |
MLA | James Knighton,et al."Alignment of tree phenology and climate seasonality influences the runoff response to forest cover loss".Environmental Research Letters (2020). |
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