DOI: 10.1016/j.foreco.2017.09.013
Scopus记录号: 2-s2.0-85029389554
论文题名: Instream large wood loads across bioclimatic regions
作者: Wohl E. ; Lininger K.B. ; Fox M. ; Baillie B.R. ; Erskine W.D.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2017
卷: 404 起始页码: 370
结束页码: 380
语种: 英语
Scopus关键词: Ecology
; Forestry
; Rivers
; Bioclimatic region
; Critical factors
; Ecological effect
; Geographic ranges
; Riparian forests
; River management
; Substantial variations
; Timber harvests
; Wood
; Coniferophyta
英文摘要: Instream large wood in forested rivers creates diverse physical and ecological effects and is a vital component of river process and form. The majority of research on wood in rivers has been conducted within a limited geographic range, raising questions about the applicability of resulting insights. We analyze data from 438 river segments in old-growth or unmanaged forests and 250 river segments in lightly managed forests representing diverse environments. We evaluate whether drainage area, channel width, and channel slope influence instream wood load in unmanaged forests across bioclimatic regions. Here we show that, without accounting for variations across regions, these numeric variables do not correlate significantly with wood loads. When accounting for the influence of all available potential influences on wood load in unmanaged forest rivers, bioclimatic region, drainage area, and channel width are the dominant predictors of wood load, and the relationship between wood load and channel width differs between regions. Combining data across bioclimatic regions, unmanaged rivers have significantly greater wood loads than lightly managed forests. Splitting data by bioclimatic region, unmanaged rivers in the northern dry conifer and northern wet conifer regions have significantly greater wood loads than lightly managed forests, but wood loads in the northern wet deciduous region do not differ between unmanaged and lightly managed forests. Our findings suggest that (i) bioclimatic region is a critical factor in predicting and understanding wood dynamics in rivers, (ii) even historic or relatively light levels of timber harvest and wood removal can create persistent differences in wood loads, and (iii) substantial variation in wood load among river segments within a bioclimatic region suggests that riparian forest and river management should focus on processes that maintain wood loads capable of creating desired physical and ecological effects rather than specified volumes of wood. © 2017 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64117
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Geosciences, Colorado State University, Fort Collins, CO, United States; Muckleshoot Tribe, 39015 172nd Ave SE, Auburn, WA, United States; Scion Research, 49 Sala Street, Rotorua 2010, Private Mail Bag 3020, Rotorua, New Zealand; School of Environmental and Life Sciences, University of Newcastle, Ourimbah, NSW, Australia
Recommended Citation:
Wohl E.,Lininger K.B.,Fox M.,et al. Instream large wood loads across bioclimatic regions[J]. Forest Ecology and Management,2017-01-01,404