气候变化领域集成服务门户(CCPortal): The global distribution and environmental drivers of aboveground versus belowground plant biomass

CCPortal

DOI	10.1038/s41559-021-01485-1
	The global distribution and environmental drivers of aboveground versus belowground plant biomass
	Ma H.; Mo L.; Crowther T.W.; Maynard D.S.; van den Hoogen J.; Stocker B.D.; Terrer C.; Zohner C.M.
发表日期	2021
ISSN	2397-334X
起始页码	1110
结束页码	1122
卷号	5 期号:8
英文摘要	A poor understanding of the fraction of global plant biomass occurring belowground as roots limits our understanding of present and future ecosystem function and carbon pools. Here we create a database of root-mass fractions (RMFs), an index of plant below- versus aboveground biomass distributions, and generate quantitative, spatially explicit global maps of RMFs in trees, shrubs and grasses. Our analyses reveal large gradients in RMFs both across and within vegetation types that can be attributed to resource availability. High RMFs occur in cold and dry ecosystems, while low RMFs dominate in warm and wet regions. Across all vegetation types, the directional effect of temperature on RMFs depends on water availability, suggesting feedbacks between heat, water and nutrient supply. By integrating our RMF maps with existing aboveground plant biomass information, we estimate that in forests, shrublands and grasslands, respectively, 22%, 47% and 67% of plant biomass exists belowground, with a total global belowground fraction of 24% (20–28%), that is, 113 (90–135) Gt carbon. By documenting the environmental correlates of root biomass allocation, our results can inform model projections of global vegetation dynamics under current and future climate scenarios. ? 2021, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
scopus关键词	carbon; biomass; ecosystem; forest; plant; Biomass; Carbon; Ecosystem; Forests; Plants
来源期刊	Nature Ecology & Evolution
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/256891
作者单位	Institute of Integrative Biology, ETH Zurich (Swiss Federal Institute of Technology), Zurich, Switzerland; Swiss Federal Institute for Forest, Snow and Landscape Research WSL, Birmensdorf, Switzerland; Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, CA, United States; Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA, United States
推荐引用方式 GB/T 7714	Ma H.,Mo L.,Crowther T.W.,et al. The global distribution and environmental drivers of aboveground versus belowground plant biomass[J],2021,5(8).
APA	Ma H..,Mo L..,Crowther T.W..,Maynard D.S..,van den Hoogen J..,...&Zohner C.M..(2021).The global distribution and environmental drivers of aboveground versus belowground plant biomass.Nature Ecology & Evolution,5(8).
MLA	Ma H.,et al."The global distribution and environmental drivers of aboveground versus belowground plant biomass".Nature Ecology & Evolution 5.8(2021).