Deep soil C and N pools in long-term fenced and overgrazed temperate grasslands in northwest China

doi:10.1038/s41598-019-52631-6

IEECAS OpenIR > 生态环境研究室

	Deep soil C and N pools in long-term fenced and overgrazed temperate grasslands in northwest China
	Li, Jian-Ping 1; Ma, Hong-Bin 1; Xie, Ying-Zhong 1; Wang, Kai-Bo 2; Qiu, Kai-Yang 1
通讯作者	Li, Jian-Ping(lijianpingsas@163.com)
	2019-11-06
发表期刊	SCIENTIFIC REPORTS
ISSN	2045-2322
卷号	9 页码:11
摘要	Fencing for grazing exclusion has been widely found to have an impact on grassland soil organic carbon (SOC) and total nitrogen (TN), but little is known about the impact of fenced grassland on the changes in deep soil carbon (C) and nitrogen (N) stocks in temperate grasslands. We studied the influence of 30 years fencing on vegetation and deep soil characteristics (0-500 cm) in the semi-arid grasslands of northern China. The results showed that fencing significantly increased the aboveground biomass (AGB), litter biomass (LB), total biomass, vegetation coverage and height, and soil water content and the SOC and TN in the deep soil. The belowground biomass (BGB) did not significantly differ between the fenced and grazed grassland. However, fencing significantly decreased the root/shoot ratio, forbs biomass, pH, and soil bulk density. Meanwhile, fencing has significantly increased the C and N stocks in the AGB and LB but not in the BGB. After 30 years of fencing, the C and N stocks significantly increased in the 0-500 cm soil layer. The accumulation of SOC mainly occurred in the deep layers (30-180 cm), and the accumulation of TN occurred in the soil layers of 0 to 60 cm and 160 to 500 cm. Our results indicate that fencing is an effective way to improve deep soil C and N stocks in temperate grassland of northwest China. There were large C and N stocks in the soil layers of 100 to 500 cm in the fenced grasslands, and their dynamics should not be ignored.
DOI	10.1038/s41598-019-52631-6
关键词[WOS]	GRAZING EXCLUSION ; CARBON STORAGE ; PLANT DIVERSITY ; NITROGEN STORAGE ; INNER-MONGOLIA ; STEPPE ; SEQUESTRATION ; RESTORATION ; VEGETATION ; STOCKS
收录类别	SCI ; SCI
语种	英语
资助项目	National Natural Science Foundation of China[31660143] ; National Natural Science Foundation of China[41501094] ; Chinese Postdoctoral Science Foundation[2015M580896] ; Top Discipline Construction Project of Pratacultural Science[NXYLXK2017A01]
WOS研究方向	Science & Technology - Other Topics
项目资助者	National Natural Science Foundation of China ; Chinese Postdoctoral Science Foundation ; Top Discipline Construction Project of Pratacultural Science
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000494636300010
出版者	NATURE PUBLISHING GROUP
引用统计	被引频次：6[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/12903
专题	生态环境研究室
通讯作者	Li, Jian-Ping
作者单位	1.Ningxia Univ, Sch Agr, Yinchuan, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Li, Jian-Ping,Ma, Hong-Bin,Xie, Ying-Zhong,et al. Deep soil C and N pools in long-term fenced and overgrazed temperate grasslands in northwest China[J]. SCIENTIFIC REPORTS,2019,9:11.
APA	Li, Jian-Ping,Ma, Hong-Bin,Xie, Ying-Zhong,Wang, Kai-Bo,&Qiu, Kai-Yang.(2019).Deep soil C and N pools in long-term fenced and overgrazed temperate grasslands in northwest China.SCIENTIFIC REPORTS,9,11.
MLA	Li, Jian-Ping,et al."Deep soil C and N pools in long-term fenced and overgrazed temperate grasslands in northwest China".SCIENTIFIC REPORTS 9(2019):11.