气候变化领域集成服务门户(CCPortal): Urbanization and fragmentation mediate temperate forest carbon cycle response to climate

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DOI	10.1088/1748-9326/abbf16
	Urbanization and fragmentation mediate temperate forest carbon cycle response to climate
	Reinmann A.B.; Smith I.A.; Thompson J.R.; Hutyra L.R.
发表日期	2020
ISSN	17489318
卷号	15 期号:11
英文摘要	Forest fragmentation is ubiquitous across urban and rural areas. While there is mounting evidence that forest fragmentation alters the terrestrial carbon cycle, the extent to which differences in ambient growing conditions between urban and rural landscapes mediate forest response to fragmentation and climate remains unexamined. This study integrates field measurements of forest structure, growth, and soil respiration with climate data and high-resolution land-cover maps to quantify forest carbon storage and sequestration patterns along edge-to-interior gradients. These data were used to contrast the response of temperate broadleaf forests to non-forest edges within rural and urban landscapes. We find that forest growth rates in both rural and urban landscapes nearly double from the forest interior to edge. Additionally, these edge-induced enhancements in forest growth are not offset by concurrent increases in total soil respiration observed across our sites. Forest productivity generally increases near edges because of increases in leaf area, but elevated air temperature at the edge tempers this response and imparts greater sensitivity of forest growth to heat. In particular, the adverse impacts of heat on forest growth are two to three times larger in urban than rural landscapes. We demonstrate that the highly fragmented nature of urban forests compared to rural forests makes them a stronger carbon sink per unit area, but also much more vulnerable to a warming climate. Collectively, our results highlight the need to include the effects of both urbanization and fragmentation when quantifying regional carbon balance and its response to a changing climate. © 2020 The Author(s). Published by IOP Publishing Ltd.
英文关键词	carbon cycle; climate change; forest fragmentation; forest growth; land-cover change; temperate forest; urbanization
语种	英语
scopus关键词	Carbon capture; Digital storage; Plants (botany); Rural areas; Soil surveys; Urban growth; Changing climate; Field measurement; Forest fragmentations; Forest productivity; Growing conditions; Temperate forests; Terrestrial carbon cycle; Urban and rural areas; Forestry; carbon cycle; carbon dioxide; climate effect; forest ecosystem; habitat fragmentation; temperate forest; urbanization
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/153497
作者单位	Environmental Sciences Initiative, Cuny Advanced Science Research Center, New York City, NY 10031, United States; Department of Geography and Environmental Science, Hunter College, New York City, NY 10065, United States; Gradaute Programs in Earth and Environmental Sciences and Biology, Cuny Graduate Center, New York City, NY 10016, United States; Department of Earth and Environment, Boston University, Boston, MA 02215, United States; Harvard Forest, Harvard University, Petersham, MA 01366, United States
推荐引用方式 GB/T 7714	Reinmann A.B.,Smith I.A.,Thompson J.R.,et al. Urbanization and fragmentation mediate temperate forest carbon cycle response to climate[J],2020,15(11).
APA	Reinmann A.B.,Smith I.A.,Thompson J.R.,&Hutyra L.R..(2020).Urbanization and fragmentation mediate temperate forest carbon cycle response to climate.Environmental Research Letters,15(11).
MLA	Reinmann A.B.,et al."Urbanization and fragmentation mediate temperate forest carbon cycle response to climate".Environmental Research Letters 15.11(2020).