Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.foreco.2018.08.034 |
Looking beyond the mean: Drivers of variability in postfire stand development of conifers in Greater Yellowstone | |
Braziunas, Kristin H.1; Hansen, Winslow D.1; Seidl, Rupert2; Rammer, Werner2; Turner, Monica G.1 | |
2018-12-15 | |
发表期刊 | FOREST ECOLOGY AND MANAGEMENT |
ISSN | 0378-1127 |
EISSN | 1872-7042 |
出版年 | 2018 |
卷号 | 430页码:460-471 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Austria |
英文摘要 | High-severity, infrequent fires in forests shape landscape mosaics of stand age and structure for decades to centuries, and forest structure can vary substantially even among same-aged stands. This variability among stand structures can affect landscape-scale carbon and nitrogen cycling, wildlife habitat availability, and vulnerability to subsequent disturbances. We used an individual-based forest process model (iLand) to ask: Over 300 years of postfire stand development, how does variation in early regeneration densities versus abiotic conditions influence among-stand structural variability for four conifer species widespread in western North America? We parameterized iLand for lodgepole pine (Pins contorta var. latifolia), Douglas-fir (Pseudotsuga menziesu var. glauca), Engelmann spruce (Picea engelmannu), and subalpine fir (Abies lasiocarpa) in Greater Yellowstone (USA). Simulations were initialized with field data on regeneration following stand-replacing fires, and stand development was simulated under historical climatic conditions without further disturbance. Stand structure was characterized by stand density and basal area. Stands became more similar in structure as time since fire increased. Basal area converged more rapidly among stands than tree density for Douglas-fir and lodgepole pine, but not for subalpine fir and Engelmann spruce. For all species, regeneration-driven variation in stand density persisted for at least 99 years postfire, and for lodgepole pine, early regeneration densities dictated among-stand variation for 217 years. Over time, stands shifted from competition-driven convergence to environment-driven divergence, in which variability among stands was maintained or increased. The relative importance of drivers of stand structural variability differed between density and basal area and among species due to differential species traits, growth rates, and sensitivity to intraspecific competition versus abiotic conditions. Understanding dynamics of postfire stand development is increasingly important for anticipating future landscape patterns as fire activity increases. |
英文关键词 | Stand structure Variability Forest development Process-based modeling Greater Yellowstone Ecosystem Wildfire |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000449137300045 |
WOS关键词 | SUB-ALPINE FORESTS ; LODGEPOLE PINE FORESTS ; NET PRIMARY PRODUCTION ; LANDSCAPE PATTERNS ; NATIONAL-PARK ; NITROGEN AVAILABILITY ; DISTURBANCE REGIMES ; BRITISH-COLUMBIA ; ROCKY-MOUNTAINS ; REPLACING FIRE |
WOS类目 | Forestry |
WOS研究方向 | Forestry |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/23400 |
专题 | 气候变化 |
作者单位 | 1.Univ Wisconsin Madison, Dept Integrat Biol, Birge Hall,430 Lincoln Dr, Madison, WI 53706 USA; 2.Univ Nat Resources & Life Sci BOKU Vienna, Inst Silviculture, Dept Forest & Soil Sci, Peter Jordan Str 82, A-1190 Vienna, Austria |
推荐引用方式 GB/T 7714 | Braziunas, Kristin H.,Hansen, Winslow D.,Seidl, Rupert,et al. Looking beyond the mean: Drivers of variability in postfire stand development of conifers in Greater Yellowstone[J]. FOREST ECOLOGY AND MANAGEMENT,2018,430:460-471. |
APA | Braziunas, Kristin H.,Hansen, Winslow D.,Seidl, Rupert,Rammer, Werner,&Turner, Monica G..(2018).Looking beyond the mean: Drivers of variability in postfire stand development of conifers in Greater Yellowstone.FOREST ECOLOGY AND MANAGEMENT,430,460-471. |
MLA | Braziunas, Kristin H.,et al."Looking beyond the mean: Drivers of variability in postfire stand development of conifers in Greater Yellowstone".FOREST ECOLOGY AND MANAGEMENT 430(2018):460-471. |
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