干旱区生态环境知识资源中心(Arid): Overgrazing, not haying, decreases grassland topsoil organic carbon by decreasing plant species richness along an aridity gradient in Northern China

Arid

DOI	10.1016/j.agee.2022.107935
	Overgrazing, not haying, decreases grassland topsoil organic carbon by decreasing plant species richness along an aridity gradient in Northern China
	Liu, Jushan; Isbell, Forest; Ma, Quanhui; Chen, Ying; Xing, Fu; Sun, Wei; Wang, Ling; Li, Jian; Wang, Yunbo; Hou, Fujiang; Xin, Xiaoping; Nan, Zhibiao; Eisenhauer, Nico; Wang, Deli
通讯作者	Wang, DL
来源期刊	AGRICULTURE ECOSYSTEMS & ENVIRONMENT
ISSN	0167-8809
EISSN	1873-2305
出版年	2022
卷号	332
英文摘要	Climate and land-use change are some of the most profound threats to the biodiversity and functioning of the Earth's ecosystems. However, potential synergistic effects of these drivers through biodiversity change on ecosystem functioning remain unclear. Here we examined how aridity and land-use (overgrazing and haying) affect above-ground biomass and soil organic carbon (SOC) through changes in plant species richness across 701 grassland sites in China. We found that aridity and grazing reduced SOC through decreasing plant species richness, but did not significantly affect above-ground biomass. Notably, we observed strong negative synergistic effects of aridity and grazing, suggesting that soil carbon content was particularly threatened by grazing in arid environments. By contrast, haying reduced above-ground biomass and had no significant effect on SOC, although it increased plant species richness. Plant species richness had greater positive effects on SOC than on above-ground biomass, and its effects became stronger in more arid regions. Together, the results demonstrate that aridity and overgrazing threaten soil carbon content via their detrimental effects on plant diversity, and that detrimental overgrazing effects are particularly strong under arid conditions. However, the study also indicates that certain management types like haying or less intensive grazing can maintain or enhance plant diversity and soil carbon content, and that the beneficial effects of plant diversity are particularly important in arid environments.
英文关键词	Grassland Aridity Land -use Grazing Haying Soil carbon content Species richness
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000791946900005
WOS关键词	SOIL CARBON ; BIODIVERSITY LOSS ; DIVERSITY ; CLIMATE ; MULTIFUNCTIONALITY ; MANAGEMENT ; PRODUCTIVITY ; THRESHOLDS ; DRYLANDS ; IMPACTS
WOS类目	Agriculture, Multidisciplinary ; Ecology ; Environmental Sciences
WOS研究方向	Agriculture ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/391663
推荐引用方式 GB/T 7714	Liu, Jushan,Isbell, Forest,Ma, Quanhui,et al. Overgrazing, not haying, decreases grassland topsoil organic carbon by decreasing plant species richness along an aridity gradient in Northern China[J],2022,332.
APA	Liu, Jushan.,Isbell, Forest.,Ma, Quanhui.,Chen, Ying.,Xing, Fu.,...&Wang, Deli.(2022).Overgrazing, not haying, decreases grassland topsoil organic carbon by decreasing plant species richness along an aridity gradient in Northern China.AGRICULTURE ECOSYSTEMS & ENVIRONMENT,332.
MLA	Liu, Jushan,et al."Overgrazing, not haying, decreases grassland topsoil organic carbon by decreasing plant species richness along an aridity gradient in Northern China".AGRICULTURE ECOSYSTEMS & ENVIRONMENT 332(2022).