Controls of seed quantity and quality on seedling recruitment of smith fir along altitudinal gradient in southeastern Tibetan Plateau
文献类型：期刊论文
| 作者 | 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 |
| 刊名 | Journal of Mountain Science
 |
| 出版日期 | 2016-05 |
| 卷号 | 13期号:5页码:811-821 |
| 关键词 | Abies georgeivar. smithii Treeline Seed rain Soil seed bank Seed quality Seedling recruitment |
| ISSN号 | 1672-6316 |
| 通讯作者 | SHI Pei-li |
| 英文摘要 | Alpine 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. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/15124]  |
| 专题 | 成都山地灾害与环境研究所_Journal of Mountain Science _Journal of Mountain Science-2016_Vol13 No.5 |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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