气候变化领域集成服务门户(CCPortal): Topography and soils-based mapping reveals fine-scale compositional shifts over two centuries within a central Appalachian landscape

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DOI	10.1016/j.foreco.2018.10.052
	Topography and soils-based mapping reveals fine-scale compositional shifts over two centuries within a central Appalachian landscape
	Dyer J.M.; Hutchinson T.F.
发表日期	2019
ISSN	0378-1127
起始页码	33
结束页码	42
卷号	433
英文摘要	When public lands were surveyed in the U.S., “witness trees” were often recorded to facilitate the relocation of property boundaries, and these records provide a snapshot of forest conditions prior to Euro-American settlement and land clearing. This study utilizes witness trees and present-day plot data to explore long-term vegetation changes at a regional scale. Landscape classes for a 5000 km2 study area in Appalachian Ohio were defined by slope, aspect, topographic position, soil pH, and available water capacity. Cluster analysis and ordination revealed topo-edaphic patterns in the presettlement (c. 1800) and present-day forests, based on 5765 witness trees and 3249 contemporary trees occurring on 547 Forest Inventory and Analysis (FIA) subplots. Mesophication is evident, as the oak-hickory presettlement forest is now dominated by maple-poplar. Size-class analysis suggests the presettlement forest also experienced mesophication following xeric conditions of the preceding centuries. In both presettlement and contemporary forests, ridges form distinctive communities compared to slopes and valleys, although topographic distinctiveness is now more prevalent. Several taxa revealed changes in site affinities over the past two centuries; shifts in their realized niches suggest mesophication acts through diverse individualistic responses to a multiple set of interacting drivers. Specifically, regionally documented changes in land use, drought, N deposition, and fire at the time of the original surveys lead to altered competitive relationships. © 2018 Elsevier B.V.
英文关键词	FIA; Mesophication; Oak forests; Presettlement; Topography
语种	英语
scopus关键词	Cluster analysis; Land use; Surveys; Topography; Available water capacities; Forest inventory and analysis; Mesophication; Oak forests; Presettlement; Presettlement forest; Topographic positions; Vegetation change; Forestry; cluster analysis; community composition; community dynamics; deciduous forest; forest inventory; geological mapping; landscape; topographic mapping; topography; vegetation dynamics; Analysis; Forestry; Forests; Land Use; Patterns; Surveys; Topography; Trees; Appalachians; Ohio; United States; Acer; Carya
来源期刊	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156307
作者单位	Department of Geography, Ohio University, Athens, OH 45701, United States; US Forest Service, Northern Research Station, Delaware, OH 43015, United States
推荐引用方式 GB/T 7714	Dyer J.M.,Hutchinson T.F.. Topography and soils-based mapping reveals fine-scale compositional shifts over two centuries within a central Appalachian landscape[J],2019,433.
APA	Dyer J.M.,&Hutchinson T.F..(2019).Topography and soils-based mapping reveals fine-scale compositional shifts over two centuries within a central Appalachian landscape.Forest Ecology and Management,433.
MLA	Dyer J.M.,et al."Topography and soils-based mapping reveals fine-scale compositional shifts over two centuries within a central Appalachian landscape".Forest Ecology and Management 433(2019).