How does the stand structure of treeline-forming species shape the treeline ecotone in different regions of the Nepal Himalayas?
文献类型：期刊论文
| 作者 | Chhetri, Parveen K.; Bista, Raju; Shrestha, Krishna B. |
| 刊名 | JOURNAL OF MOUNTAIN SCIENCE
 |
| 出版日期 | 2020 |
| 卷号 | 17期号:10页码:2354-2368 |
| 关键词 | Climate change Morphometry Nepal Himalayas Stand structure Treeline Tree-rings |
| ISSN号 | 1672-6316 |
| DOI | 10.1007/s11629-020-6147-7 |
| 文献子类 | Article |
| 英文摘要 | Stand structure dynamics are considered as major happenings in any forest as a response to environmental changes. However, this important topic is underrepresented in the treeline studies in the Nepal Himalayas. We aimed to investigate site- as well as species-specific changes in morphometric features (basal diameter, crown cover, density, and height) along the elevational gradient across treeline ecotones in response to recent environmental changes. The stand structure characteristics ofAbies spectabilis, Pinus wallichiana, andBetula utilisacross the treeline ecotone of three study sites in Eastern (Barun), Central (Manang), and Western (Dhorpatan) Nepal were analyzed to elucidate structural heterogeneities. Altogether, eight transects (20 m x (60-250 m)) across the treeline ecotone were established. Trees of all life forms, trees (> 2 m), saplings (0.5-2 m), and seedlings (< 0.5 m), within each transect were enumerated and sampled for the morphometric features and age. Site-specific and species-specific stand structure dynamics were found. The rate of basal area increment was higher in Barun, but the Manang treeline, despite profound regeneration in recent years, had a low annual basal area increment. Moreover, the altitudinal distribution of age and morphometry were not consistent among those ecotones. Furthermore, intra-specific competition was not significant. The site-specific stand structure dynamics explain why treelines do not respond uniformly to increasing temperature. It invokes, in further studies, the incorporation of the tree's morphometric adaptation traits, phenotypic plasticity, and interactions between species genotype and the environment. |
| 电子版国际标准刊号 | 1993-0321 |
| 语种 | 英语 |
| WOS记录号 | WOS:000578876400004 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/50613]  |
| 专题 | Journal of Mountain Science_Journal of Mountain Science-2020_Vol17 No.10 |
| 推荐引用方式 GB/T 7714 | Chhetri, Parveen K.,Bista, Raju,Shrestha, Krishna B.. How does the stand structure of treeline-forming species shape the treeline ecotone in different regions of the Nepal Himalayas?[J]. JOURNAL OF MOUNTAIN SCIENCE,2020,17(10):2354-2368. |
| APA | Chhetri, Parveen K.,Bista, Raju,&Shrestha, Krishna B..(2020).How does the stand structure of treeline-forming species shape the treeline ecotone in different regions of the Nepal Himalayas?.JOURNAL OF MOUNTAIN SCIENCE,17(10),2354-2368. |
| MLA | Chhetri, Parveen K.,et al."How does the stand structure of treeline-forming species shape the treeline ecotone in different regions of the Nepal Himalayas?".JOURNAL OF MOUNTAIN SCIENCE 17.10(2020):2354-2368. |
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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