干旱区生态环境知识资源中心(Arid): Rebuilding soil organic C stocks in degraded grassland by grazing exclusion: a linked decline in soil inorganic C

Arid

DOI	10.7717/peerj.8986
	Rebuilding soil organic C stocks in degraded grassland by grazing exclusion: a linked decline in soil inorganic C
	Zhang, Yi 1; Xie, Yingzhong 1; Ma, Hongbin 1; Jing, Le 1; Matthew, Cory 2; Li, Jianping 1
通讯作者	Li, Jianping
来源期刊	PEERJ
ISSN	2167-8359
出版年	2020
卷号	8
英文摘要	Background. Our study evaluated how soil organic carbon (SOC) and soil inorganic carbon (SIC) recovered over time in deep loessial soil as overgrazed grassland was fenced and restored. Methods. The study was conducted in the Yunwu Mountain Nature Reserve in the Ningxia Autonomous Region of China. In it we compared soil data from three grazed grassland (G) sites, three sites that were fenced for 15 years (F15), and three sites that were fenced for 30 years (F30) as a so-called 'space for time series'. Results and Discussion. We compared SOC accumulation in soil up to 200 cm below the surface in G, F15, and F30 plots. An increase in SOC correlated with a decrease in soil pH, and decreased soil bulk density. However, SOC sequestration in fenced plots was largely offset by a decrease in SIC, which was closely correlated (r = 0.713, p = 0.001) with SOC-driven soil pH decline. We observed no significant increase in soil total carbon in the F15 or F30 sites after comparing them to G. Conclusions. Our data indicate that fencing causes the slow diffusion processes to intensify the soil property changes from increased litter return, and this slow diffusion process is still active 30 years after fencing at 100-200 cm soil depths in the studied deep loessial soil. These findings are likely applicable to similar sites.
英文关键词	Soil carbon stocks Soil organic carbon Soil inorganic carbon Profile distribution Grassland restoration Semi-arid region
类型	Article
语种	英语
国家	Peoples R China ; New Zealand
开放获取类型	gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000530161100008
WOS关键词	CARBON ACCUMULATION ; LOESS PLATEAU ; RESTORATION ; NITROGEN ; CHINA ; CHRONOSEQUENCE ; RESPONSES ; DYNAMICS ; STEPPE ; PLANT
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/319058
作者单位	1.Ningxia Univ, Sch Agr, Yinchuan, Ningxia, Peoples R China; 2.Massey Univ, Sch Agr & Environm, Palmston North, New Zealand
推荐引用方式 GB/T 7714	Zhang, Yi,Xie, Yingzhong,Ma, Hongbin,et al. Rebuilding soil organic C stocks in degraded grassland by grazing exclusion: a linked decline in soil inorganic C[J],2020,8.
APA	Zhang, Yi,Xie, Yingzhong,Ma, Hongbin,Jing, Le,Matthew, Cory,&Li, Jianping.(2020).Rebuilding soil organic C stocks in degraded grassland by grazing exclusion: a linked decline in soil inorganic C.PEERJ,8.
MLA	Zhang, Yi,et al."Rebuilding soil organic C stocks in degraded grassland by grazing exclusion: a linked decline in soil inorganic C".PEERJ 8(2020).