DOI: 10.1016/j.foreco.2014.10.006
Scopus记录号: 2-s2.0-84909960091
论文题名: Developmental dynamics following selective logging of an evergreen oak forest in the Eastern Himalaya, Bhutan: Structure, composition, and spatial pattern
作者: Covey K. ; Carroll C.J.W. ; Duguid M.C. ; Dorji K. ; Dorji T. ; Tashi S. ; Wangdi T. ; Ashton M.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2015
卷: 336 起始页码: 163
结束页码: 173
语种: 英语
英文关键词: Old-growth
; Quercus semecarpifolia. karsu oak
; Ripley's K
; Selective logging
; Spatial pattern
Scopus关键词: Old-growth
; Quercus
; Ripley's K
; Selective logging
; Spatial patterns
; community structure
; dicotyledon
; evergreen forest
; old-growth forest
; regeneration
; selective logging
; silviculture
; spatial distribution
; Bhutan
; Himalayas
; Quercus semecarpifolia
英文摘要: Brown oak (. Quercus semecarpifolia, a.k.a. Kharsu, bji shing. ) is a biologically and economically important evergreen broadleaved tree that dominates moist temperate and lower-montane forests throughout the mid-elevation Himalaya. We demarcated two paired spatially explicit one-hectare plots in an experimentally harvested area and an unharvested old growth reserve of Q. semecarpifolia dominated forest in the Bhutan Himalaya. We compared the structure, species composition and diversity, and spatial relationships between the two plots. To test whether harvesting had been successful in establishing a new cohort of oak we compared regeneration in plots established in 1999, to data gathered over ten years after. Regeneration plots showed a paucity of Quercus regeneration in both stands. Logging did not reduce tree species richness; however, Shannon diversity, Simpson diversity, and evenness were all lower in the logged stand. We used univariate and bivariate Ripley's-K functions to assess the spatial distribution of trees in both stands and test whether single tree felling had altered the spatial relationships among and between species. Understory species were clumped at scales >30. m in canopy gaps in the old-growth reserve, whereas distribution in the logged plot was more random. Relationships between species show similar patterns with more than 80% of species showing significant clumping at scales from 12. m to 30. m, while ~70% of relationships in the logged plot showed complete spatial randomness. In the old-growth reserve several species showed significant dispersion away from canopy dominant oaks. Scarce regeneration and significant changes in spatial pattern development in the harvested stand suggest changes to current silvicultural practice are needed. © 2014 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65626
Appears in Collections: 影响、适应和脆弱性
There are no files associated with this item.
作者单位: School of Forestry and Environmental Studies, Yale University, New Haven, CT, United States; Graduate Degree Program in Ecology, Colorado State University, Fort Collins, CO, United States; Ugyen Wangchuck Institute for Conservation and Environment, Lamai Gompa, Bumthang, Bhutan; Renewable Natural Resources Research and Development Center, Jakar, Bhutan; Renewable Natural Resources Research and Development Center, Yusipang, Bhutan
Recommended Citation:
Covey K.,Carroll C.J.W.,Duguid M.C.,et al. Developmental dynamics following selective logging of an evergreen oak forest in the Eastern Himalaya, Bhutan: Structure, composition, and spatial pattern[J]. Forest Ecology and Management,2015-01-01,336