气候变化领域集成服务门户(CCPortal): Simulating effects of grazing on soil organic carbon stocks in Mongolian grasslands

CCPortal

DOI	10.1016/j.agee.2015.07.014
	Simulating effects of grazing on soil organic carbon stocks in Mongolian grasslands
	Chang, Xiaofeng; Bao, Xiaoying; Wang, Shiping; Wilkes, Andreas; Erdenetsetseg, Baasandai; Baival, Batkhishig; Avaadorj, Danzan-osor; Maisaikhan, Temuujin; Damdinsuren, Bolormaa
通讯作者	Wang, SP (通讯作者)
发表日期	2015
ISSN	0167-8809
EISSN	1873-2305
起始页码	278
结束页码	284
卷号	212
英文摘要	Grassland degradation is a major issue in many parts of the world. Rehabilitation of areas that have been degraded by overgrazing can potentially accumulate soil carbon, but there have been few studies in the vast grasslands of Mongolia. Here, we calibrated and validated Century model with 618 measurements from a soil inventory covering four grassland types in a forest steppe region of Mongolia. Soil organic carbon (SOC) simulated by Century largely agreed with the observational dataset and the sign of SOC response to intensive grazing. We employed the calibrated model to assess SOC accumulation under reduced grazing intensity scenarios, and the projected accumulation rates were 22.0-36.9 g C m(-2) yr(-1) in the near term (2012-2035). These results imply that reducing the intensity of grazing may be an effective strategy for restoration of degraded grasslands, which can be implemented by reducing livestock numbers and/or by changing the timing and duration of grazing events. Moreover, the simulated SOC accumulation was mainly determined by a conceptual slow pool, which was not supported by experimental observations in similar soils. Therefore, evaluating the long-term climate mitigation through soil carbon accumulation in degraded grasslands still warrants further attention. (C) 2015 Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
关键词	SEMIARID STEPPE SEQUESTRATION MANAGEMENT IMPACTS CLIMATE ECOSYSTEMS CAPACITY CHINA
英文关键词	Overgrazing; Carbon accumulation; Modeling; Mongolia
语种	英语
WOS研究方向	Agriculture ; Environmental Sciences & Ecology
WOS类目	Agriculture, Multidisciplinary ; Ecology ; Environmental Sciences
WOS记录号	WOS:000361261100025
来源期刊	AGRICULTURE ECOSYSTEMS & ENVIRONMENT
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258599
推荐引用方式 GB/T 7714	Chang, Xiaofeng,Bao, Xiaoying,Wang, Shiping,et al. Simulating effects of grazing on soil organic carbon stocks in Mongolian grasslands[J]. 中国科学院青藏高原研究所,2015,212.
APA	Chang, Xiaofeng.,Bao, Xiaoying.,Wang, Shiping.,Wilkes, Andreas.,Erdenetsetseg, Baasandai.,...&Damdinsuren, Bolormaa.(2015).Simulating effects of grazing on soil organic carbon stocks in Mongolian grasslands.AGRICULTURE ECOSYSTEMS & ENVIRONMENT,212.
MLA	Chang, Xiaofeng,et al."Simulating effects of grazing on soil organic carbon stocks in Mongolian grasslands".AGRICULTURE ECOSYSTEMS & ENVIRONMENT 212(2015).