气候变化领域集成服务门户(CCPortal): Interspecific interactions under fertilization among Elymus nutans, Festuca sinensis and Festuca ovina on the eastern Qinghai-Tibetan plateau

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DOI	10.1111/j.1442-1984.2011.00348.x
	Interspecific interactions under fertilization among Elymus nutans, Festuca sinensis and Festuca ovina on the eastern Qinghai-Tibetan plateau
	Gu, Menghe; Dong, Shikui; Wang, Tao; Xie, Zhongkui
发表日期	2012
ISSN	0913-557X
卷号	27 期号:2
英文摘要	A field replacement experiment was used to study the interspecific interaction among three perennial grasses (Elymus nutans, Festuca sinensis and Festuca ovina) that are distributed widely on the east Qinghai-Tibetan plateau. The experiment consisted of four different species mixtures at four seeding densities and two fertilizer levels. Above-ground biomass, relative yield and complementary effect were determined from harvested shoot dry weights. The results showed that above-ground biomass was greater in all species mixtures than in monocultures. The difference between the observed and expected relative yield was greater than zero in all mixtures for E. nutans and was greater than zero in the F. sinensis/F. ovina mixture, but was below zero in all other mixtures for F. sinensis, and was below zero in all mixtures for F. ovina. The complementary effect was more negative across all seeding densities except at a seeding density of 400 seeds/m2, and was negative across all mixtures except the F. sinensis/F. ovina mixture. In addition, fertilization had an insignificant impact on the relative yield, but a significant impact on the complementary effect. Fertilization enhanced negative interspecific interaction among the species.
关键词	competition complementary effect grassland mixtures relative yield
学科领域	Plant Sciences; Environmental Sciences & Ecology
语种	英语
WOS研究方向	Plant Sciences ; Ecology
来源期刊	PLANT SPECIES BIOLOGY
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/111663
作者单位	Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Gu, Menghe,Dong, Shikui,Wang, Tao,et al. Interspecific interactions under fertilization among Elymus nutans, Festuca sinensis and Festuca ovina on the eastern Qinghai-Tibetan plateau[J]. 中国科学院西北生态环境资源研究院,2012,27(2).
APA	Gu, Menghe,Dong, Shikui,Wang, Tao,&Xie, Zhongkui.(2012).Interspecific interactions under fertilization among Elymus nutans, Festuca sinensis and Festuca ovina on the eastern Qinghai-Tibetan plateau.PLANT SPECIES BIOLOGY,27(2).
MLA	Gu, Menghe,et al."Interspecific interactions under fertilization among Elymus nutans, Festuca sinensis and Festuca ovina on the eastern Qinghai-Tibetan plateau".PLANT SPECIES BIOLOGY 27.2(2012).