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A Quantitative Basis for Using Ontario's Existing Ecoregionalization Systems
David J. B. BaldwinAjith PereraLawrence E. BandLarry E. BandOntario Forest Research Institute
出版Ontario Forest Research Institute, 1998
主題Technology & Engineering / Agriculture / Forestry
ISBN07778818459780777881842
URLhttp://books.google.com.hk/books?id=XuUsAQAAMAAJ&hl=&source=gbs_api
註釋Ecoregionalization systems used in resource management stratify terrestrial or aquatic ecosystems and attempt to simplify ecological complexity. They provide an ecologically based alternative to arbitrary administrative planning units and a logical basis for forest resource & protected area planning, assessing biodiversity, monitoring ecosystems, and stratifying sample areas for research. This report examines the regional-level units of the three ecoregionalization systems available for Ontario: Hills Site Regions (Hills, 1959); Terrestrial Ecoregions of Ontario (Wickware & Rubec, 1989); and Revised Terrestrial Ecoregions (Ecological Stratification Working Group, 1995). The objective is to quantify these systems using a multivariate set of geoclimatic variables and to determine the effectiveness of these systems in stratifying different ecological conditions in the province. The report provides descriptive statistics & principal components analysis of each regional unit, compares multivariate distances & geologic similarity among units, and examines gradients of geoclimatic variables across unit boundaries. Strengths & weaknesses of each system in delineating groups of variables (temperature, precipitation, geology, terrain) are discussed along with the implications for using existing systems & future ecoregionalization development.