干旱区生态环境知识资源中心(Arid): Effects of grazing and mowing on vertical distribution of soil nutrients and their stoichiometry (C: N: P) in a semi-arid grassland of North China

Arid

DOI	10.1016/j.catena.2021.105507
	Effects of grazing and mowing on vertical distribution of soil nutrients and their stoichiometry (C: N: P) in a semi-arid grassland of North China
	Chen, Lingling; Wang, Kexin; Baoyin, Taogetao
通讯作者	Chen, LL ; Baoyin, T (corresponding author), 235 West Coll Rd, Hohhot 010021, Inner Mongolia, Peoples R China.
来源期刊	CATENA
ISSN	0341-8162
EISSN	1872-6887
出版年	2021
卷号	206
英文摘要	Grazing and mowing are increasingly recognized as a major driver of variations in soil nutrient levels during grassland management process. However, relatively few studies have examined the effects of grazing and mowing on the variations in concentrations, stocks, and stoichiometry of soil organic carbon (SOC), total nitrogen (TN), and total phosphorous (TP) in the deepsoil layer. In this study, a 6-year trial was conducted under grazing and mowing in a semi-arid grassland of North China to compare the concentrations, stocks, and stoichiometry of SOC, TN and TP in the top 1 m soil layer. The results indicated that both grazing and mowing increased SOC and TN stocks in the topsoil layer (0-30 cm), while mowing decreased SOC stock in the subsoil layer (30-100 cm). Meanwhile, neither treatment had any significant effects on TP concentrations and stock in the entire 0-100 cm profile. However, both grazing and mowing caused a decline in C:N and C:P ratios at 50-70 cm depth. The shifts in plant community composition regulated the changes of SOC and TN stocks in the topsoil layer, while resource allocation between aboveground plants and belowground roots regulated the changes of SOC stock and C:N:P stoichiometry in the subsoil layer. It is speculated that low-frequency grazing might be a sustainable grassland management regime, as it conserves both above- and belowground parts and maintains healthy ecosystem functions in semi-arid grasslands.
英文关键词	Grazing Mowing Plant community composition Resource allocation Soil C, N and P Stoichiometry
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000688449100029
WOS关键词	LAND-USE ; CARBON ; QUALITY ; IMPACTS ; REGIMES ; STORAGE
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向	Geology ; Agriculture ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/368251
作者单位	[Chen, Lingling] Inner Mongolia Univ, Coll Life Sci, Hohhot 010021, Peoples R China; [Wang, Kexin; Baoyin, Taogetao] Inner Mongolia Univ, Minist Educ, Key Lab Ecol & Resource Use Mongolian Plateau, Hohhot 010021, Peoples R China; [Wang, Kexin; Baoyin, Taogetao] Inner Mongolia Univ, Inner Mongolia Key Lab Grassland Ecol, Sch Ecol & Environm, Hohhot 010021, Peoples R China
推荐引用方式 GB/T 7714	Chen, Lingling,Wang, Kexin,Baoyin, Taogetao. Effects of grazing and mowing on vertical distribution of soil nutrients and their stoichiometry (C: N: P) in a semi-arid grassland of North China[J],2021,206.
APA	Chen, Lingling,Wang, Kexin,&Baoyin, Taogetao.(2021).Effects of grazing and mowing on vertical distribution of soil nutrients and their stoichiometry (C: N: P) in a semi-arid grassland of North China.CATENA,206.
MLA	Chen, Lingling,et al."Effects of grazing and mowing on vertical distribution of soil nutrients and their stoichiometry (C: N: P) in a semi-arid grassland of North China".CATENA 206(2021).