DOI: 10.1016/j.foreco.2013.11.008
Scopus记录号: 2-s2.0-84888866701
论文题名: Spatial analysis of remnant tree effects in a secondary Abies-Betula forest on the eastern edge of the Qinghai-Tibetan Plateau, China
作者: Miao N. ; Liu S. ; Yu H. ; Shi Z. ; Moermond T. ; Liu Y.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2014
卷: 313 起始页码: 104
结束页码: 111
语种: 英语
英文关键词: Abies faxoniana
; Abies-Betula forest
; Betula albo-sinensis
; O-ring statistics
; Remnant trees
; Spatial associations
; Spatial point pattern analysis
Scopus关键词: Ecology
; O rings
; Spatial variables measurement
; Abies faxoniana
; Abies-Betula forest
; Betula albo-sinensis
; Remnant trees
; Spatial associations
; Spatial point pattern analysis
; Reforestation
; disturbance
; dominance
; protected area
; regeneration
; secondary forest
; shade tolerance
; spatial analysis
; statistical analysis
; tree
; China
; Qinghai-Xizang Plateau
; Abies
; Abies faxoniana
; Betula
; Betula albosinensis
英文摘要: Remnant trees, remaining after large-scale disturbance of forests, have been shown to exhibit noticeable ecological effects on the recovery of ecosystem functions. Although it is well known that remnant trees may serve as dispersal foci, their effects on the spatial pattern of later stages of dominant tree species in natural secondary forest have not been fully appreciated. To explore the spatial influences of remnant trees on later stages of dominant tree species of a secondary Abies-Betula forest on the eastern edge of the Qinghai-Tibetan Plateau, we mapped all the trees in a 200m×200m plot. We used spatial point pattern analysis including O-ring statistics to analyze the spatial associations between old-growth remnant trees and two dominant tree species of later stages. Abies faxoniana and Betula albo-sinensis, comparing different size-classes at different spatial scales. Our results showed that saplings, small trees, and medium trees of the shade-tolerant species, A. faxoniana, showed significantly positive associations to the old-growth remnant trees of both dominant species, suggesting that remnant trees provided favourable sites for the regeneration of shade-tolerant species. In contrast, small, and medium trees of the shade-intolerant species, B. albo-sinensis, showed significantly negative associations to old-growth remnant trees of both dominant species, suggesting that the remnant trees hinder their regeneration. For old-growth remnant trees, the O12(r) function value (density) of their seedlings, saplings, small trees, and medium trees was calculated at increasingly greater concentric scales (with radius from 0 to 100m from the remnant trees). Tree density first increased rapidly from 0 to 10m or 20m radius (distance from remnant tree) and then decreased continually away from remnant trees, consistent in part with the population recruitment curve proposed by the Janzen-Connell model. We found that saplings, small trees, and medium trees of A. faxoniana tended to distribute within a particular range of annuli around the remnant trees of A. faxoniana, with the densities of the three largest size-classes reaching a maximum within 3-6m of the remnant tree. The densities beyond the parent remnant trees continued to show an increasingly expanding zone of attraction around the remnant tree. In effect, the small and medium A. faxoniana trees coalesced around remnant trees to create increasingly enlarged canopy cover areas, which served simultaneously as protected zones for A. faxoniana regeneration and extended exclusion zones for B. albo-sinensis and similar shade intolerant species. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66152
Appears in Collections: 影响、适应和脆弱性
There are no files associated with this item.
作者单位: Key Laboratory of Bio-resources and Eco-environment (Ministry of Education), College of Life Sciences, Sichuan University, Chengdu, Sichuan 610064, China; Key Laboratory of Forest Ecology and Environment of State Forestry Administration, Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Beijing 100091, China; Science and Technology Exploitation and Examination Base of Mentougou District, Beijing 102300, China; Sichuan Key Laboratory of Conservation Biology on Endangered Wildlife, Colalege of Life Sciences, Sichuan University, Sichuan 610064, China; SYSU-Alberta Joint Lab for Biodiversity Conservation, School of Life Sciences, Sun Yat-sen University, Guangzhou 510006, China
Recommended Citation:
Miao N.,Liu S.,Yu H.,et al. Spatial analysis of remnant tree effects in a secondary Abies-Betula forest on the eastern edge of the Qinghai-Tibetan Plateau, China[J]. Forest Ecology and Management,2014-01-01,313