More than a century of Grain for Green Program is expected to restore soil carbon stock on alpine grassland revealed by field C-13 pulse labeling

doi:10.1016/j.scitotenv.2016.01.060

NWIPB OpenIR

	More than a century of Grain for Green Program is expected to restore soil carbon stock on alpine grassland revealed by field C-13 pulse labeling
	Li, Qi1 ; Chen, Dongdong 1; Zhao, Liang 1; Yang, Xue 2; Xu, Shixiao 1; Zhao, Xinquan 1,3
	2016-04-15
发表期刊	SCIENCE OF THE TOTAL ENVIRONMENT
卷号	550 页码:17-26
文章类型	Article
摘要	Anthropogenic changes in land use/cover have altered the vegetation, soil, and carbon (C) cycling on the Qinghai-Tibetan Plateau (QTP) over the last similar to 50 years. As a result, the Grain for Green Program (GfGP) has been widely implemented over the last 10 years to mitigate the impacts of cultivation. To quantify the effects of the GfGP on C partitioning and turnover rates at the ecosystem scale, an in situ C-13 pulse labeling experiment was conducted on natural and GfGP grasslands in an agro-pastoral ecotone in the LakeQinghai region on the QTP. Wefound that there were significant differences in the C stocks of all the considered pools in both the natural and GfGP grasslands, with higher CO2 uptake rates in the GfGP grassland than that in the natural grassland. Partitioning of photoassimilate (% of recovered C-13) in C pools of both grasslands was similar 25 days after labeling, except in the roots of the 0-15 and 5-15 cm soil layer. Soil organic C (SOC) sequestration rate in the GfGP grasslandwas 11.59 +/- 1.89 g C m(-2) yr(-1) significantly greater than that in the natural grassland. The results confirmed that the GfGP is an efficient approach for grassland restoration and C sequestration. However, it will take more than a century (119.19 +/- 20.26 yr) to restore the SOC stock from the current cropland baseline level to the approximate level of natural grassland. We suggest that additional measures are needed in the selection of suitable plant species for vegetation restoration, and in reasonable grazing management. (C) 2016 Elsevier B.V. All rights reserved.
关键词	Carbon Cycle Carbon Partitioning Turnover Rate Restoration Time Land Use/cover Change Qinghai-tibetan Plateau
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
DOI	10.1016/j.scitotenv.2016.01.060
关键词[WOS]	QINGHAI-TIBETAN PLATEAU ; LAND-USE CHANGE ; ORGANIC-MATTER ; LAKE QINGHAI ; CHINA ; MANAGEMENT ; ALLOCATION ; VEGETATION ; STORAGE ; SEQUESTRATION
收录类别	SCI
语种	英语
项目资助者	"Strategic Priority Research Program" of the Chinese Academy of Sciences(XDA05070000) ; Natural Science Foundation of Qinghai Province(2013-Z-941Q) ; National Key Technologies RD Program(2014BAC05B04 ; 2012BAD131301)
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000371226700003
引用统计	被引频次：21[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/5738
专题	中国科学院西北高原生物研究所
作者单位	1.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, Xining 810008, Qinghai, Peoples R China 2.Dept Educ Qinghai Prov, Xining 810008, Qinghai, Peoples R China 3.Chinese Acad Sci, Chengdu Inst Biol, Chengdu 10041, Sichuan, Peoples R China
推荐引用方式 GB/T 7714	Li, Qi,Chen, Dongdong,Zhao, Liang,et al. More than a century of Grain for Green Program is expected to restore soil carbon stock on alpine grassland revealed by field C-13 pulse labeling[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2016,550:17-26.
APA	Li, Qi,Chen, Dongdong,Zhao, Liang,Yang, Xue,Xu, Shixiao,&Zhao, Xinquan.(2016).More than a century of Grain for Green Program is expected to restore soil carbon stock on alpine grassland revealed by field C-13 pulse labeling.SCIENCE OF THE TOTAL ENVIRONMENT,550,17-26.
MLA	Li, Qi,et al."More than a century of Grain for Green Program is expected to restore soil carbon stock on alpine grassland revealed by field C-13 pulse labeling".SCIENCE OF THE TOTAL ENVIRONMENT 550(2016):17-26.