气候变化领域集成服务门户(CCPortal): Soil physico-chemical properties are critical for predicting carbon storage and nutrient availability across Australia

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DOI	10.1088/1748-9326/ab9f7e
	Soil physico-chemical properties are critical for predicting carbon storage and nutrient availability across Australia
	Li J.; Nie M.; Powell J.R.; Bissett A.; Pendall E.
发表日期	2020
ISSN	17489318
卷号	15 期号:9
英文摘要	Soil carbon and nutrient availability play crucial roles in ecosystem sustainability, and they are controlled by the interaction of climatic, biotic, and soil physico-chemical variables. Although soil physico-chemical properties have been recognized as vital variables for predicting soil organic carbon (SOC) and nutrients, their relative influence across broad geographical scales has yet to be evaluated when simultaneously considering many other drivers. Using boosted regression tree and structural equation modelling analyses of observations from topsoil (0-10 cm) and subsoil (20-30 cm) at 628 sites across Australia, we investigated the effects and relative influence of climate (mean annual temperature and aridity index), plant productivity, soil biodiversity (bacterial and fungal richness), and soil physical (clay and silt) and chemical (pH and iron) properties on SOC content and nutrient availability (i.e. nitrogen, phosphorus, and potassium). Among these variables, we found that soil physico-chemical properties primarily predicted the continent-scale SOC storage and nutrient availability. In contrast, climate, plant productivity, and soil biodiversity played relatively small roles. The importance of physico-chemical properties was evident across soil depths and ecosystem types (i.e. tropical, temperate, arid, and cropland). Our findings point to the need to better understand the role of soil physico-chemical properties in soil carbon and nutrient cycling and including these variables in predictions of SOC and nutrient dynamics at the ecosystem to continental scale. © 2020 The Author(s). Published by IOP Publishing Ltd.
英文关键词	Biodiversity; Carbon cycle; Chemical property; Climate change; Nutrient; Physical property; Soil geochemistry
语种	英语
scopus关键词	Biodiversity; Chemical analysis; Chemical properties; Ecosystems; Forecasting; Organic carbon; Productivity; Soils; Boosted regression trees; Ecosystem sustainability; Geographical scale; Mean annual temperatures; Nutrient availability; Soil organic carbon; Soil physico-chemical properties; Structural equation modelling; Nutrients; biodiversity; carbon storage; physicochemical property; regression analysis; soil carbon; soil nutrient; soil organic matter; subsoil; sustainability; Australia; Bacteria (microorganisms)
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/153726
作者单位	Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW 2751, Australia; Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, Coastal Ecosystems Research Station of the Yangtze River Estuary, Shanghai Institute of Eco-Chongming, Fudan University, Shanghai, 200438, China; Oceans and Atmosphere, Csiro, TAS 7000, Hobart, Australia
推荐引用方式 GB/T 7714	Li J.,Nie M.,Powell J.R.,et al. Soil physico-chemical properties are critical for predicting carbon storage and nutrient availability across Australia[J],2020,15(9).
APA	Li J.,Nie M.,Powell J.R.,Bissett A.,&Pendall E..(2020).Soil physico-chemical properties are critical for predicting carbon storage and nutrient availability across Australia.Environmental Research Letters,15(9).
MLA	Li J.,et al."Soil physico-chemical properties are critical for predicting carbon storage and nutrient availability across Australia".Environmental Research Letters 15.9(2020).