气候变化领域集成服务门户(CCPortal): Biochar increases soil carbon pools: Evidence from a global meta-analysis

CCPortal

DOI	10.1016/j.jenvman.2021.114403
	Biochar increases soil carbon pools: Evidence from a global meta-analysis
	Moura Chagas, Jhon Kenedy; de Figueiredo, Cicero Celio; Gerosa Ramos, Maria Lucrecia
发表日期	2022
ISSN	0301-4797
EISSN	1095-8630
卷号	305
英文摘要	Biochar is a carbon-rich material that increases soil C sequestration and mitigates climate change. However, due to the variability of experimental conditions, types of biochar and soil, the influence of biochar on the accumulation of different soil carbon fractions remains unclear. Therefore, a meta-analysis was performed that included 586 paired comparisons obtained from 169 studies conducted in various countries around the globe. The data set average showed significant relative increases of 64.3, 84.3, 20.1, 22.9 and 42.1% for total C, organic C, microbial biomass C, labile C and fulvic acid, respectively. The dissolved organic C, humic acid and humin fractions showed no significant variations. The relative increase in TC was favored by increasing biochar rates applied to fine-textured soils with low C content in temperate climate regions seen through short-term experiments conducted under controlled conditions. This behavior was different for each soil C fraction. Therefore, variations between experimental conditions, types of biochar and soil show that it is necessary to consider multiple factors when choosing the conditions of biochar use to maximize C sequestration in the soil and/or the increase of labile C fractions in the soil.
英文关键词	Pyrolysis; Carbon sequestration; Organic carbon; Microbial biomass carbon; Labile carbon; Humic substances
语种	英语
WOS研究方向	Environmental Sciences
WOS类目	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000741787900007
来源期刊	JOURNAL OF ENVIRONMENTAL MANAGEMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/280743
作者单位	Universidade de Brasilia
推荐引用方式 GB/T 7714	Moura Chagas, Jhon Kenedy,de Figueiredo, Cicero Celio,Gerosa Ramos, Maria Lucrecia. Biochar increases soil carbon pools: Evidence from a global meta-analysis[J],2022,305.
APA	Moura Chagas, Jhon Kenedy,de Figueiredo, Cicero Celio,&Gerosa Ramos, Maria Lucrecia.(2022).Biochar increases soil carbon pools: Evidence from a global meta-analysis.JOURNAL OF ENVIRONMENTAL MANAGEMENT,305.
MLA	Moura Chagas, Jhon Kenedy,et al."Biochar increases soil carbon pools: Evidence from a global meta-analysis".JOURNAL OF ENVIRONMENTAL MANAGEMENT 305(2022).