气候变化领域集成服务门户(CCPortal): Belowground carbon flux links biogeochemical cycles and resource-use efficiency at the global scale

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DOI	10.1111/ele.12690
	Belowground carbon flux links biogeochemical cycles and resource-use efficiency at the global scale
	Gill A.L.; Finzi A.C.
发表日期	2016
ISSN	1461-023X
EISSN	1461-0248
卷号	19 期号:12
英文摘要	Nutrient limitation is pervasive in the terrestrial biosphere, although the relationship between global carbon (C) nitrogen (N) and phosphorus (P) cycles remains uncertain. Using meta-analysis we show that gross primary production (GPP) partitioning belowground is inversely related to soil-available N : P, increasing with latitude from tropical to boreal forests. N-use efficiency is highest in boreal forests, and P-use efficiency in tropical forests. High C partitioning belowground in boreal forests reflects a 13-fold greater C cost of N acquisition compared to the tropics. By contrast, the C cost of P acquisition varies only 2-fold among biomes. This analysis suggests a new hypothesis that the primary limitation on productivity in forested ecosystems transitions from belowground resources at high latitudes to aboveground resources at low latitudes as C-intensive root- and mycorrhizal-mediated nutrient capture is progressively replaced by rapidly cycling, enzyme-derived nutrient fluxes when temperatures approach the thermal optimum for biogeochemical transformations. © 2016 John Wiley & Sons Ltd/CNRS
英文关键词	Belowground carbon allocation; global biogeochemical cycle; nitrogen limitation; resource use efficiency
学科领域	carbon; nitrogen; phosphorus; carbon cycle; chemistry; ecosystem; factual database; geographic and geological phenomena; Carbon; Carbon Cycle; Databases, Factual; Ecosystem; Geological Phenomena; Nitrogen; Phosphorus
语种	英语
scopus关键词	carbon; nitrogen; phosphorus; carbon cycle; chemistry; ecosystem; factual database; geographic and geological phenomena; Carbon; Carbon Cycle; Databases, Factual; Ecosystem; Geological Phenomena; Nitrogen; Phosphorus
来源期刊	Ecology Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/118469
作者单位	Department of Biology, Boston University, Boston, MA 02215, United States
推荐引用方式 GB/T 7714	Gill A.L.,Finzi A.C.. Belowground carbon flux links biogeochemical cycles and resource-use efficiency at the global scale[J],2016,19(12).
APA	Gill A.L.,&Finzi A.C..(2016).Belowground carbon flux links biogeochemical cycles and resource-use efficiency at the global scale.Ecology Letters,19(12).
MLA	Gill A.L.,et al."Belowground carbon flux links biogeochemical cycles and resource-use efficiency at the global scale".Ecology Letters 19.12(2016).