Deepened snow cover mitigates soil carbon loss from intensive land-use in a semi-arid temperate grassland

doi:10.1111/1365-2435.13958

	Deepened snow cover mitigates soil carbon loss from intensive land-use in a semi-arid temperate grassland
	Li, Ping ; Sayer, Emma J.; Jia, Zhou 2; Wu, Yuntao 2; Deng, Meifeng ; Wang, Xin ; Liu, Chao 2; Wang, Bin 2; Wang, Yang ; Bai, Yongfei2 ; Liu, Lingli2
	2022
发表期刊	FUNCTIONAL ECOLOGY
ISSN	0269-8463
卷号	36 期号:3 页码:635-645
摘要	1. Carbon (C) loss due to soil erosion is a major issue in semi-arid grasslands. The extent of soil erosion is determined by soil properties and vegetation structure, especially during the non-growing season. In many Inner Mongolian grasslands, intensive land-use, such as overgrazing and mowing, has severely reduced plant cover and damaged soil structure, which has exacerbated soil C loss by erosion. At the same time, increasing winter snowfall due to climate change is stimulating plant growth and altering plant composition. However, we do not know how changes in winter snow cover interact with land-use practices to regulate soil C loss due to erosion. 2. Here, we conducted a 6-year snow manipulation experiment under different land-use practices (control; moderately mowed, MM; heavily mowed, HM) to measure net changes in soil depth, soil C, plant biomass and vegetation structure. 3. After 6 years, soil C loss under ambient snow was three times greater in the MM and four times greater in the HM treatment compared with controls during non-growing season. However, deepened winter snow alleviated erosion-induced soil C loss by 14%, 47%, 16% in the controls, MM and HM treatments respectively. 4. The severity of soil C loss declined with increasing above-ground biomass (AGB), surface root biomass and vegetation structure. Vegetation structure and AGB explained more of the variation in soil C loss than surface root biomass, possibly because a complex canopy and plant cover increases overall surface roughness, thereby reducing soil C loss. Intensified land-use reduced AGB, surface root biomass and vegetation structure, but deepened snow increased overall surface roughness by promoting AGB. Hence, our study demonstrates that deepened snow can alleviate soil C loss due to land-use practices by promoting AGB. A free Plain Language Summary can be found within the Supporting Information of this article.
关键词	land-use plant biomass soil carbon loss soil erosion vegetation structure winter snow cover
学科领域	Ecology
DOI	10.1111/1365-2435.13958
收录类别	SCI
语种	英语
WOS关键词	WIND EROSION ; DUST EMISSION ; SEQUESTRATION POTENTIALS ; SPECIES COEXISTENCE ; INNER-MONGOLIA ; PLANT-ROOTS ; ERODIBILITY ; VEGETATION ; PATTERNS ; IMPACT
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000715154400001
出版者	WILEY
文献子类	Article
出版地	HOBOKEN
EISSN	1365-2435
资助机构	Strategic Priority Research Program of the Chinese Academy of Science [XDA23080301] ; Chinese National Key Development Program for Basic Research [2019YFA0607301] ; National Natural Science Foundation of China [31988102]
作者邮箱	lingli.liu@ibcas.ac.cn
作品OA属性	Green Submitted
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/28644
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 Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China 2.Sayer, Emma J.] Univ Lancaster, Lancaster Environm Ctr, Lancaster, England 3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Li, Ping,Sayer, Emma J.,Jia, Zhou,et al. Deepened snow cover mitigates soil carbon loss from intensive land-use in a semi-arid temperate grassland[J]. FUNCTIONAL ECOLOGY,2022,36(3):635-645.
APA	Li, Ping.,Sayer, Emma J..,Jia, Zhou.,Wu, Yuntao.,Deng, Meifeng.,...&Liu, Lingli.(2022).Deepened snow cover mitigates soil carbon loss from intensive land-use in a semi-arid temperate grassland.FUNCTIONAL ECOLOGY,36(3),635-645.
MLA	Li, Ping,et al."Deepened snow cover mitigates soil carbon loss from intensive land-use in a semi-arid temperate grassland".FUNCTIONAL ECOLOGY 36.3(2022):635-645.

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