气候变化领域集成服务门户(CCPortal): Carbon declines along tropical forest edges correspond to heterogeneous effects on canopy structure and function

CCPortal

DOI	10.1073/pnas.1914420117
	Carbon declines along tropical forest edges correspond to heterogeneous effects on canopy structure and function
	Ordway E.M.; Asner G.P.
发表日期	2020
ISSN	0027-8424
起始页码	7863
结束页码	7870
卷号	117 期号:14
英文摘要	Nearly 20% of tropical forests are within 100 m of a nonforest edge, a consequence of rapid deforestation for agriculture. Despite widespread conversion, roughly 1.2 billion ha of tropical forest remain, constituting the largest terrestrial component of the global carbon budget. Effects of deforestation on carbon dynamics in remnant forests, and spatial variation in underlying changes in structure and function at the plant scale, remain highly uncertain. Using airborne imaging spectroscopy and light detection and ranging (LiDAR) data, we mapped and quantified changes in forest structure and foliar characteristics along forest/oil palm boundaries in Malaysian Borneo to understand spatial and temporal variation in the influence of edges on aboveground carbon and associated changes in ecosystem structure and function. We uncovered declines in aboveground carbon averaging 22% along edges that extended over 100 m into the forest. Aboveground carbon losses were correlated with significant reductions in canopy height and leaf mass per area and increased foliar phosphorus, three plant traits related to light capture and growth. Carbon declines amplified with edge age. Our results indicate that carbon losses along forest edges can arise from multiple, distinct effects on canopy structure and function that vary with edge age and environmental conditions, pointing to a need for consideration of differences in ecosystem sensitivity when developing land-use and conservation strategies. Our findings reveal that, although edge effects on ecosystem structure and function vary, forests neighboring agricultural plantations are consistently vulnerable to long-lasting negative effects on fundamental ecosystem characteristics controlling primary productivity and carbon storage. © 2020 National Academy of Sciences. All rights reserved.
英文关键词	Borneo; Carbon conservation; Deforestation; Forest edge effects; Leaf traits
语种	英语
scopus关键词	carbon; phosphorus; carbon; Article; Borneo; canopy; carbon dynamics; carbon storage; correlational study; deforestation; ecosystem; Elaeis; environmental protection; forest structure; land use; photosynthesis; plant growth; primary production (biomass); priority journal; remote sensing; tropical rain forest; agriculture; biomass; ecosystem; environmental protection; forest; growth, development and aging; metabolism; plant leaf; tree; tropic climate; Agriculture; Biomass; Borneo; Carbon; Conservation of Natural Resources; Ecosystem; Forests; Phosphorus; Plant Leaves; Trees; Tropical Climate
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/161000
作者单位	Ordway, E.M., Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA 02138, United States, Department of Earth System Science, Stanford University, Stanford, CA 94305, United States, Center for Global Discovery and Conservation Science, Arizona State University, Tempe, AZ 85281, United States; Asner, G.P., Center for Global Discovery and Conservation Science, Arizona State University, Tempe, AZ 85281, United States
推荐引用方式 GB/T 7714	Ordway E.M.,Asner G.P.. Carbon declines along tropical forest edges correspond to heterogeneous effects on canopy structure and function[J],2020,117(14).
APA	Ordway E.M.,&Asner G.P..(2020).Carbon declines along tropical forest edges correspond to heterogeneous effects on canopy structure and function.Proceedings of the National Academy of Sciences of the United States of America,117(14).
MLA	Ordway E.M.,et al."Carbon declines along tropical forest edges correspond to heterogeneous effects on canopy structure and function".Proceedings of the National Academy of Sciences of the United States of America 117.14(2020).