Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.16059 |
Nature-based framework for sustainable afforestation in global drylands under changing climate | |
Hongyan Liu; Chongyang Xu; Craig D. Allen; Henrik Hartmann; Xiaohua Wei; Dan Yakir; Xiuchen Wu; Pengtao Yu | |
2022-01-14 | |
发表期刊 | Global Change Biology
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出版年 | 2022 |
英文摘要 | Drylands cover more than 40% of Earth's land surface and occur at the margin of forest distributions due to the limited availability of water for tree growth. Recent elevated temperature and low precipitation have driven greater forest declines and pulses of tree mortality on dryland sites compared to humid sites, particularly in temperate Eurasia and North America. Afforestation of dryland areas has been widely implemented and is expected to increase in many drylands globally to enhance carbon sequestration and benefits to the human environment, but the interplay of sometimes conflicting afforestation outcomes has not been formally evaluated yet. Most previous studies point to conflicts between additional forest area and water consumption, in particular water yield and soil conservation/desalinization in drylands, but were generally confined to local and regional scales. Our global synthesis demonstrates that additional tree cover can amplify water consumption through a nonlinear increase in evapotranspiration—depending on tree species, age, and structure—which will be further intensified by future climate change. In this review we identify substantial knowledge gaps in addressing the dryland afforestation dilemma, where there are trade-offs with planted forests between increased availability of some resources and benefits to human habitats versus the depletion of other resources that are required for sustainable development of drylands. Here we propose a method of addressing comprehensive vegetation carrying capacity, based on regulating the distribution and structure of forest plantations to better deal with these trade-offs in forest multifunctionality. We also recommend new priority research topics for dryland afforestation, including: responses and feedbacks of dryland forests to climate change; shifts in the ratio of ecosystem ET to tree cover; assessing the role of scale of afforestation in influencing the trade-offs of dryland afforestation; and comprehensive modeling of the multifunctionality of dryland forests, including both ecophysiological and socioeconomic aspects, under a changing climate. |
领域 | 气候变化 ; 资源环境 |
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/345044 |
专题 | 气候变化 资源环境科学 |
推荐引用方式 GB/T 7714 | Hongyan Liu,Chongyang Xu,Craig D. Allen,et al. Nature-based framework for sustainable afforestation in global drylands under changing climate[J]. Global Change Biology,2022. |
APA | Hongyan Liu.,Chongyang Xu.,Craig D. Allen.,Henrik Hartmann.,Xiaohua Wei.,...&Pengtao Yu.(2022).Nature-based framework for sustainable afforestation in global drylands under changing climate.Global Change Biology. |
MLA | Hongyan Liu,et al."Nature-based framework for sustainable afforestation in global drylands under changing climate".Global Change Biology (2022). |
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