干旱区生态环境知识资源中心(Arid): Seed Germination in Alpine Meadow Steppe Plants from Central Tibet in Response to Experimental Warming

Arid

DOI	10.3390/su12051884
	Seed Germination in Alpine Meadow Steppe Plants from Central Tibet in Response to Experimental Warming
	Wang, Xiangtao 1,2,3; Niu, Ben 1,2; Zhang, Xianzhou 1,2,4; He, Yongtao 1,2,4; Shi, Peili 1,2,4; Miao, Yanjun 3; Cao, Yanan 1,2; Li, Meng 1,2; Wang, Zhipeng 1,2
通讯作者	Zhang, Xianzhou
来源期刊	SUSTAINABILITY
EISSN	2071-1050
出版年	2020
卷号	12 期号:5
英文摘要	Clarifying the effects of climate warming on seed germination is critical for predicting plant community assembly and species renewal, especially in alpine grassland ecosystems where warming is occurring faster than in other biomes globally. We collected matured seeds of 19 common species from a typical alpine meadow steppe community in Central Tibet. Seeds were germinated in three incubators with manipulated day-night temperatures to impose three treatments: (1) theoretically optimal values of 25/15 degrees C, (2) temperatures observed in the field (control), and (3) a warming of 3 degrees C above the observed temperatures. We calculated seed germination percentage (SGP) and mean germination time (MGT) per species at different treatments. Our results showed that SGPs of Stipa capillacea, Kobresia macrantha, Potentilla saundersiana, Saussurea tibetica, Pedicularis kansuensis, and Androsace graminifolia were higher under the warming treatment than under control. Among them, the MGTs of S. capillacea, K. macrantha, and And. graminifolia were significantly shortened, while the MGT of Pe. kansuensis was significantly lengthened by warming of 3 degrees C. Significant decreases in MGT induced by warming were only observed for Festuca coelestis and Anaphalis xylorhiza. Additionally, the treatment with theoretically optimal temperatures restrained germination of Stipa purpurea, S. capillacea, F. coelestis, and Sa. tibetica seeds but promoted germination of K. macrantha, Astragalus strictus, P. saundersiana, Potentilla bifurca, Pe. kansuensis, Swertia tetraptera, Pleurospermum hedinii, and And. Graminifolia seeds, when compared with the control and warming treatments. Therefore, the response of seed germination to warming differs among alpine species, implying that future warming could result in significant changes in community assembly of alpine grasslands on the Tibetan Plateau.
英文关键词	alpine grasslands climate warming incubator germination time seed germination percentage Tibetan Plateau
类型	Article
语种	英语
国家	Peoples R China
开放获取类型	gold
收录类别	SCI-E ; SSCI
WOS记录号	WOS:000522470900185
WOS关键词	CLIMATE ; TEMPERATURE ; DORMANCY ; REGENERATION ; RECRUITMENT ; MECHANISMS ; STRATEGIES ; PLATEAU ; DESERT ; COLD
WOS类目	Green & Sustainable Science & Technology ; Environmental Sciences ; Environmental Studies
WOS研究方向	Science & Technology - Other Topics ; Environmental Sciences & Ecology
来源机构	中国科学院地理科学与资源研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/315630
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Lhasa Natl Ecol Res Stn, Beijing 100101, Peoples R China; 2.UCAS, Beijing 100049, Peoples R China; 3.Xizang Agr & Anim Husb Coll, Dept Anim Sci, Linzhi 860000, Peoples R China; 4.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Wang, Xiangtao,Niu, Ben,Zhang, Xianzhou,et al. Seed Germination in Alpine Meadow Steppe Plants from Central Tibet in Response to Experimental Warming[J]. 中国科学院地理科学与资源研究所,2020,12(5).
APA	Wang, Xiangtao.,Niu, Ben.,Zhang, Xianzhou.,He, Yongtao.,Shi, Peili.,...&Wang, Zhipeng.(2020).Seed Germination in Alpine Meadow Steppe Plants from Central Tibet in Response to Experimental Warming.SUSTAINABILITY,12(5).
MLA	Wang, Xiangtao,et al."Seed Germination in Alpine Meadow Steppe Plants from Central Tibet in Response to Experimental Warming".SUSTAINABILITY 12.5(2020).