Soil dissolved organic carbon in terrestrial ecosystems: Global budget, spatial distribution and controls

doi:10.1111/geb.13186

CORC > 植物研究所 > 中国科学院植物研究所 > 植被与环境变化国家重点实验室

	Soil dissolved organic carbon in terrestrial ecosystems: Global budget, spatial distribution and controls
	Guo, Ziyu ; Wang, Yihui 3; Wan, Zhongmei 4; Zuo, Yunjiang ; He, Liyuan 3; Li, Dan 5; Yuan, Fenghui 3,6; Wang, Nannan 1,3; Liu, Jianzhao ; Song, Yanyu
刊名	GLOBAL ECOLOGY AND BIOGEOGRAPHY
	2020
卷号	29 期号:12 页码:2159-2175
关键词	biomes dissolved organic carbon terrestrial ecosystems vertical distribution
ISSN号	1466-822X
DOI	10.1111/geb.13186
文献子类	Article
英文摘要	Aims Soil dissolved organic carbon (DOC) is a primary form of labile carbon in terrestrial ecosystems, and therefore plays a vital role in soil carbon cycling. This study aims to quantify the budgets of soil DOC at biome and global levels and to examine the variations in soil DOC and their environmental controls. Location Global. Time period 1981-2019. Methods We compiled a global dataset and analysed the concentration and distribution of DOC across 10 biomes. Results Large variations in DOC are found among biomes across space and the soil DOC concentration declines exponentially along soil depths. Tundra has the highest soil DOC concentration in 0-30 cm soils [453.75 (95% confidence interval: 324.95-633.5) mg/kg], whereas tropical and temperate forests have relatively lower DOC concentrations, ranging from 30.20 (24.78-36.80) to 54.54 (49.77-59.77) mg/kg. DOC generally accounts for < 1% of total organic carbon in soils, and DOC in 0-30 cm contributes more than half of the total DOC in the 0-100 cm soil profile. Furthermore, variations in DOC are primarily controlled by soil texture, moisture, and total organic carbon. Main conclusions A global synthesis is combined with an empirical model to extrapolate the DOC concentration along soil profiles across the globe, and global budgets of DOC are estimated as 7.20 Pg C in the top 0-30 cm and 12.97 Pg C in the 0-100 cm soil profile, respectively, with a considerable variation among biomes. The strong soil texture control but weak total organic carbon (TOC) control on DOC variations suggest that the investigation of physical protection of soil organic carbon might need to expand to consider the labile C in soils. The global maps of DOC concentration serve as a benchmark for validating land surface models in estimating carbon storage in soils.
学科主题	Ecology ; Geography, Physical
电子版国际标准刊号	1466-8238
出版地	HOBOKEN
WOS关键词	MICROBIAL COMMUNITY COMPOSITION ; DIFFERENT LAND USES ; ACID FOREST SOILS ; NITROGEN DON ; MATTER DOM ; ALTITUDINAL GRADIENT ; SUBTROPICAL FOREST ; METHANE EMISSIONS ; CONIFEROUS FOREST ; INNER-MONGOLIA
WOS研究方向	Environmental Sciences & Ecology ; Physical Geography
语种	英语
出版者	WILEY
WOS记录号	WOS:000576598600001
资助机构	San Diego State University ; Basic Scientific Research Operating Expenses of Heilongjiang Provincial Universities [2018CX05] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41730643, 41975150, 41701198] ; National Key RD Program [2016YFA0602303]
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/21566]
专题	植被与环境变化国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Appl Ecol, Key Lab Forest Ecol & Management, Shenyang, Peoples R China 2.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China 3.Chinese Acad Sci, Northeast Inst Geog & Agroecol, Key Lab Wetland Ecol & Environm, Changchun, Jilin, Peoples R China 4.San Diego State Univ, Biol Dept, San Diego, CA 92182 USA 5.Jilin Univ, Coll Earth Sci, Changchun, Jilin, Peoples R China 6.Heilongjiang Inst Technol, Coll Surveying & Mapping Engn, Harbin, Peoples R China
推荐引用方式 GB/T 7714	Guo, Ziyu,Wang, Yihui,Wan, Zhongmei,et al. Soil dissolved organic carbon in terrestrial ecosystems: Global budget, spatial distribution and controls[J]. GLOBAL ECOLOGY AND BIOGEOGRAPHY,2020,29(12):2159-2175.
APA	Guo, Ziyu.,Wang, Yihui.,Wan, Zhongmei.,Zuo, Yunjiang.,He, Liyuan.,...&Xu, Xiaofeng.(2020).Soil dissolved organic carbon in terrestrial ecosystems: Global budget, spatial distribution and controls.GLOBAL ECOLOGY AND BIOGEOGRAPHY,29(12),2159-2175.
MLA	Guo, Ziyu,et al."Soil dissolved organic carbon in terrestrial ecosystems: Global budget, spatial distribution and controls".GLOBAL ECOLOGY AND BIOGEOGRAPHY 29.12(2020):2159-2175.