IMHE OpenIR  > Journal of Mountain Science  > Journal of Mountain Science-2016  > Vol13 No.5
Controls of seed quantity and quality on seedling recruitment of smith fir along altitudinal gradient in southeastern Tibetan Plateau
WANG Jing-sheng; FENG Ji-guang; CHEN Bao-xiong; SHI Pei-li; ZHANG Jun-long; FANG Jiang-ping; WANG Zhi-kai; YAO Shuai-chen; DING Lu-bin
Corresponding AuthorSHI Pei-li
2016-05
Source PublicationJournal of Mountain Science
ISSN1672-6316
Volume13Issue:5Pages:811-821
Subtype期刊论文
AbstractAlpine treeline ecotones are harsh environment for tree establishment due to low temperature. Tree establishment at treelines requires favorable climate, suitable microsites, and viable seeds. But most researches have been addressed treeline microclimate and its effects on tree regeneration, the knowledge of seed quantity and quality and its controls on seedling recruitment were limited. We measured seed rain, soil seed bank, seed germination rate and seedling recruitment in natural forests in combination with seed transplanting manipulation to evaluate the controls of seed quantity and quality on seedling recruitment of Abies georgei var. smithii (smith fir) along altitudinal gradient, with focus on treeline ecotone in the Sygera Mountains, southeastern Tibetan Plateau. Both seed quantity and seed quality of smith fir decreased with increasing altitude and was thereby associated with decline in seed germination rate. Seed quantity and seedling recruitment were better in north-facing slope than in south slope. The treeline ecotone above 4200 m appeared as the threshold altitude to sharply decrease seed quality and seedling recruitment. The emergence and overwintering rates of transplanting seeds from 3600−3800 m also went down remarkably above 4200 m at north-facing slope. It also underpins the fact that treeline ecotone is the bottleneck of seedling recruitment. Our results suggest that seed quantity and quality are the principal limitation of treeline upward advance. This study also provides evidence to support stable treeline position in southeastern Tibetan Plateau.
KeywordAbies Georgeivar. Smithii Treeline Seed Rain Soil Seed Bank Seed Quality Seedling Recruitment
DOI10.1007/s11629-015-3761-x
Indexed BySCI
Language英语
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/15124
CollectionJournal of Mountain Science_Journal of Mountain Science-2016_Vol13 No.5
Recommended Citation
GB/T 7714
WANG Jing-sheng,FENG Ji-guang,CHEN Bao-xiong,et al. Controls of seed quantity and quality on seedling recruitment of smith fir along altitudinal gradient in southeastern Tibetan Plateau[J]. Journal of Mountain Science,2016,13(5):811-821.
APA WANG Jing-sheng.,FENG Ji-guang.,CHEN Bao-xiong.,SHI Pei-li.,ZHANG Jun-long.,...&DING Lu-bin.(2016).Controls of seed quantity and quality on seedling recruitment of smith fir along altitudinal gradient in southeastern Tibetan Plateau.Journal of Mountain Science,13(5),811-821.
MLA WANG Jing-sheng,et al."Controls of seed quantity and quality on seedling recruitment of smith fir along altitudinal gradient in southeastern Tibetan Plateau".Journal of Mountain Science 13.5(2016):811-821.
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