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DOI	10.1016/j.geodrs.2021.e00479
	On the impact of grassland management on soil carbon stocks: a worldwide meta-analysis
	Phukubye, K.; Mutema, M.; Buthelezi, N.; Muchaonyerwa, P.; Cerri, C.; Chaplot, V.
通讯作者	Chaplot, V (corresponding author)，Univ KwaZulu Natal, Sch Agr Earth & Environm Sci, Private Bag X01, ZA-3209 Pietermaritzburg, South Africa.
来源期刊	GEODERMA REGIONAL
ISSN	2352-0094
出版年	2022
卷号	28
英文摘要	Grasslands occupy 70% of whole agricultural land and hold significant amounts of carbon, a key element in the regulation of Earth's soils fertility, biomass production and climate. Previous work has shown that carbon stocks of grassland soils have been largely depleted worldwide due to missuse or mismanagement but that shifts in management could also potentially increase soil carbon stocks and mitigate against the degradation of natural ecosystems. However, the existing literature points to large discrepancies in the impact of grassland management practices on soil carbon, which the present study investigated. Here we considered 235 experimental sites in 18 countries across the world where shifts in grassland management involved different grazing strategies (free, F vs controlled, C; high, H vs low, L density grazers), grazers exclusion (E), mowing (M) and burning (B). The best performing practice was controlled grazing with high density of grazers (CHG) with an average soil organic carbon content (SOCC) increase of 21% and with 100% of the studies pointing to a SOCC increase. This was followed by E (14.9%; 60%) and FLG (13.3%; 80%). On average, burning grasslands, decreases SOCC by 9.3% but 31% of the studies pointed to an increase, thus indicating discrepancies in the impact of grassland management. CLG and mowing did not significantly impact SOCC. These results also indicated that B decreased SOCC the most under moist to humid climates (-10.9% vs -1.7% under arid to semi-arid), while that E was only beneficial in arid to semi-arid grasslands. Adoption of rotational high-intensity grazing in place of free grazing grasslands, should be seriously considered by policy and decision makers to mitigate against climate change while fostering economic and social development.
英文关键词	Soil organic carbon Rehabilitation Grazing Multiple soil classes Meta-analysis
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000742145500007
WOS关键词	DEGRADED SANDY GRASSLAND ; LAND DEGRADATION IMPACT ; INNER-MONGOLIA ; ORGANIC-CARBON ; GRAZING INTENSITY ; PHYSICAL-PROPERTIES ; SEMIARID GRASSLAND ; MICROBIAL BIOMASS ; DESERT STEPPE ; NITROGEN
WOS类目	Soil Science
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/376253
作者单位	[Phukubye, K.; Buthelezi, N.; Muchaonyerwa, P.; Chaplot, V.] Univ KwaZulu Natal, Sch Agr Earth & Environm Sci, Private Bag X01, ZA-3209 Pietermaritzburg, South Africa; [Mutema, M.] Agr Res Council Agr Engn, Private Bag X519, ZA-0127 Pretoria, South Africa; [Cerri, C.] Univ Sao Paulo, Soil & Plant Nutr, Luiz Queiroz Coll Agr, Ave Padua Dias,11, BR-13418900 Piracicaba, SP, Brazil; [Chaplot, V.] Inst Rech Dev IRD, Lab Oceanog & Climat Expt & Approches Numer, CNRS, UPMC 7159,UMR IRD,MNHN, 5 Pl Jussieu, F-75252 Paris 05, France
推荐引用方式 GB/T 7714	Phukubye, K.,Mutema, M.,Buthelezi, N.,et al. On the impact of grassland management on soil carbon stocks: a worldwide meta-analysis[J],2022,28.
APA	Phukubye, K.,Mutema, M.,Buthelezi, N.,Muchaonyerwa, P.,Cerri, C.,&Chaplot, V..(2022).On the impact of grassland management on soil carbon stocks: a worldwide meta-analysis.GEODERMA REGIONAL,28.
MLA	Phukubye, K.,et al."On the impact of grassland management on soil carbon stocks: a worldwide meta-analysis".GEODERMA REGIONAL 28(2022).