Effects of plant species richness on C-13 assimilate partitioning in artificial grasslands of different established ages

doi:10.1038/srep40307

NWIPB OpenIR

	Effects of plant species richness on C-13 assimilate partitioning in artificial grasslands of different established ages
	Xu, Longhua 1,2; Yao, Buqing 1,3; Wang, Wenying 4; Wang, Fangping 1,2; Zhou, Huakun 1,3; Shi, Jianjun 5; Zhao, Xinquan 1
	2017-01-09
发表期刊	SCIENTIFIC REPORTS
卷号	7
文章类型	Article
摘要	Artificial grasslands play a role in carbon storage on the Qinghai-Tibetan Plateau. The artificial grasslands exhibit decreased proportions of graminate and increased species richness with age. However, the effect of the graminate proportions and species richness on ecosystem C stocks in artificial grasslands have not been elucidated. We conducted an in situ C-13 pulse-labeling experiment in August 2012 using artificial grasslands that had been established for two years (2Y), five years (5Y), and twelve years (12Y). Each region was plowed fallow from severely degraded alpine meadow in the Qinghai-Tibetan Plateau. The 12Y grassland had moderate proportions of graminate and the highest species richness. This region showed more recovered C-13 in soil and a longer mean residence time, which suggests species richness controls the ecosystem C stock. The loss rate of leaf-assimilated C of the graminate-dominant plant species Elymus nutans in artificial grasslands of different ages was lowest in the 12Y grassland, which also had the highest species richness. Thus the lower loss rate of leaf-assimilated C can be partially responsible for the larger ecosystem carbon stocks in the 12Y grassland. This finding is a novel mechanism for the effects of species richness on the increase in ecosystem functioning.
WOS标题词	Science & Technology
DOI	10.1038/srep40307
关键词[WOS]	QINGHAI-TIBETAN PLATEAU ; SOIL ORGANIC-MATTER ; CARBON STORAGE ; ALPINE MEADOW ; CO2 EXCHANGE ; DIVERSITY ; NITROGEN ; BIODIVERSITY ; ECOSYSTEMS ; MANAGEMENT
收录类别	SCI
语种	英语
项目资助者	National Natural Science Foundation of China(31572354 ; National key research and development project(2016YFC0501901) ; National Science and Technology Support project(2014BAC05B03) ; 31472135 ; 31260127)
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000391371400001
引用统计	被引频次：2[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/363003/6661
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 Plateau Inst Biol, Key Lab Adaptat & Evolut Plateau Biota, Xinning Rd 31, Xining 810008, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Key Lab Restorat Ecol Cold Reg Qinghai Prov, Xining 810008, Peoples R China 4.Qinghai Normal Univ, Coll Life Sci & Geog, Wusi West 38, Xining 810008, Peoples R China 5.Qinghai Acad Anim & Vet Sci, Hutai A Lane 3, Xining 810016, Peoples R China
推荐引用方式 GB/T 7714	Xu, Longhua,Yao, Buqing,Wang, Wenying,et al. Effects of plant species richness on C-13 assimilate partitioning in artificial grasslands of different established ages[J]. SCIENTIFIC REPORTS,2017,7.
APA	Xu, Longhua.,Yao, Buqing.,Wang, Wenying.,Wang, Fangping.,Zhou, Huakun.,...&Zhao, Xinquan.(2017).Effects of plant species richness on C-13 assimilate partitioning in artificial grasslands of different established ages.SCIENTIFIC REPORTS,7.
MLA	Xu, Longhua,et al."Effects of plant species richness on C-13 assimilate partitioning in artificial grasslands of different established ages".SCIENTIFIC REPORTS 7(2017).