DOI: 10.1016/j.foreco.2016.11.022
Scopus记录号: 2-s2.0-84998567454
论文题名: Effects of canopy gap size on growth and spatial patterns of Chinese pine (Pinus tabulaeformis) regeneration
作者: Wang Z. ; Yang H. ; Dong B. ; Zhou M. ; Ma L. ; Jia Z. ; Duan J.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2017
卷: 385 起始页码: 46
结束页码: 56
语种: 英语
英文关键词: Gap size
; Kernel density estimation
; Pinus tabulaeformis
; Regeneration
; Spatial pattern
Scopus关键词: Forestry
; Gap size
; Kernel Density Estimation
; Pinus tabulaeformis
; Regeneration
; Spatial patterns
; Reforestation
; canopy gap
; coniferous tree
; density dependence
; growth rate
; light availability
; monitoring system
; quantitative analysis
; regeneration
; spatial distribution
; stand structure
; China
; Pinus tabuliformis
英文摘要: This study investigates the short-term influences of canopy gap size on the growth and spatial patterns of Chinese pine (Pinus tabulaeformis) regeneration established before (REBG) and after (REAG) gap creation. We established four gap sizes based on the mean height (H) of the canopy trees, comprising minor (0.75 H), small (1.00 H), medium (1.25 H), and large (1.50 H) gaps, and three closed canopy reference plots (10 × 10 m) in a plantation in northern China. Seven years after gap creation, each gap was divided into three sections according to the mean crown radius of the border trees, including the gap central area (section B), the sun-exposed gap edge (section C) and the less sun-exposed gap edge (section D). A quantitative analysis revealed no difference in the density of REBG and REAG among the different gap sizes or sections; however, their heights significantly increased with increasing gap size. Significantly taller and shorter regeneration were generally found in section B and under the closed canopy, respectively, whereas those in sections C and D showed no notable differences in height. The spatial patterns of REAG and REBG were mostly random and there were no spatial associations between these two age classes of regeneration within individual gaps. Among gaps of different sizes, the maximum density of REAG occurred most often along the northeastern edges of gaps with a diameter of less than 1.5 H, whereas the highest density of REBG appeared in the center and along the southeastern edges of minor gaps and the northeastern edges of large gaps. The spatial patterns in height of the regeneration were similar to those of abundance. Our exploratory analysis revealed that gap expansion along the northeastern edge will likely be necessary to encourage canopy gap closure and successful recruitment in the study area. Further continued monitoring might be required to determine the long-term efficacy of gap creation and such expansion. © 2016 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64537
Appears in Collections: 影响、适应和脆弱性
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作者单位: Key Laboratory for Silviculture and Conservation of the Ministry of Education, College of Forestry, Beijing Forestry University, No. 35, Qinghua East Road, Beijing, China; National Energy R & D Center for Non-Food Biomass, Beijing Forestry University, No. 35, Qinghua East Road, Beijing, China; National Engineering Laboratory for Tree Breeding, College of Biological Sciences and Technology, Beijing Forestry University, No. 35, Qinghua East Road, Beijing, China
Recommended Citation:
Wang Z.,Yang H.,Dong B.,et al. Effects of canopy gap size on growth and spatial patterns of Chinese pine (Pinus tabulaeformis) regeneration[J]. Forest Ecology and Management,2017-01-01,385