气候变化领域集成服务门户(CCPortal): Controls on timescales of soil organic carbon persistence across sub-Saharan Africa

CCPortal

DOI	10.1111/gcb.17089
	Controls on timescales of soil organic carbon persistence across sub-Saharan Africa
	von Fromm, Sophie F.; Doetterl, Sebastian; Butler, Benjamin M.; Aynekulu, Ermias; Berhe, Asmeret Asefaw; Haefele, Stephan M.; McGrath, Steve P.; Shepherd, Keith D.; Six, Johan; Tamene, Lulseged; Tondoh, Ebagnerin J.; Vagen, Tor-Gunnar; Winowiecki, Leigh A.; Trumbore, Susan E.; Hoyt, Alison M.
发表日期	2024
ISSN	1354-1013
EISSN	1365-2486
起始页码	30
结束页码	1
卷号	30 期号:1
英文摘要	Given the importance of soil for the global carbon cycle, it is essential to understand not only how much carbon soil stores but also how long this carbon persists. Previous studies have shown that the amount and age of soil carbon are strongly affected by the interaction of climate, vegetation, and mineralogy. However, these findings are primarily based on studies from temperate regions and from fine-scale studies, leaving large knowledge gaps for soils from understudied regions such as sub-Saharan Africa. In addition, there is a lack of data to validate modeled soil C dynamics at broad scales. Here, we present insights into organic carbon cycling, based on a new broad-scale radiocarbon and mineral dataset for sub-Saharan Africa. We found that in moderately weathered soils in seasonal climate zones with poorly crystalline and reactive clay minerals, organic carbon persists longer on average (topsoil: 201 +/- 130years; subsoil: 645 +/- 385years) than in highly weathered soils in humid regions (topsoil: 140 +/- 46years; subsoil: 454 +/- 247years) with less reactive minerals. Soils in arid climate zones (topsoil: 396 +/- 339years; subsoil: 963 +/- 669years) store organic carbon for periods more similar to those in seasonal climate zones, likely reflecting climatic constraints on weathering, carbon inputs and microbial decomposition. These insights into the timescales of organic carbon persistence in soils of sub-Saharan Africa suggest that a process-oriented grouping of soils based on pedo-climatic conditions may be useful to improve predictions of soil responses to climate change at broader scales.
英文关键词	African Soil Information Service; Afrotropics; clay mineralogy; climate change; mean C age; radiocarbon; subtropical
语种	英语
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
WOS类目	Biodiversity Conservation ; Ecology ; Environmental Sciences
WOS记录号	WOS:001151213000103
来源期刊	GLOBAL CHANGE BIOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/289636
作者单位	Max Planck Society; Swiss Federal Institutes of Technology Domain; ETH Zurich; James Hutton Institute; CGIAR; World Agroforestry (ICRAF); University of California System; University of California Merced; UK Research & Innovation (UKRI); Biotechnology and Biological Sciences Research Council (BBSRC); Rothamsted Research; Alliance; International Center for Tropical Agriculture - CIAT; Universite Nangui Abrogoua; Stanford University; Dartmouth College
推荐引用方式 GB/T 7714	von Fromm, Sophie F.,Doetterl, Sebastian,Butler, Benjamin M.,et al. Controls on timescales of soil organic carbon persistence across sub-Saharan Africa[J],2024,30(1).
APA	von Fromm, Sophie F..,Doetterl, Sebastian.,Butler, Benjamin M..,Aynekulu, Ermias.,Berhe, Asmeret Asefaw.,...&Hoyt, Alison M..(2024).Controls on timescales of soil organic carbon persistence across sub-Saharan Africa.GLOBAL CHANGE BIOLOGY,30(1).
MLA	von Fromm, Sophie F.,et al."Controls on timescales of soil organic carbon persistence across sub-Saharan Africa".GLOBAL CHANGE BIOLOGY 30.1(2024).