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A New Digital Elevation Model of Ontario
Brendan G. Mackey
Canadian Forest Service
Ontario. Ministry of Natural Resources
Northern Forestry Program (Canada)
出版
Natural Resources Canada, Canadian Forest Service
, 1994
ISBN
066222406X
9780662224068
URL
http://books.google.com.hk/books?id=0HFHAQAAMAAJ&hl=&source=gbs_api
註釋
A digital elevation model (DEM) is a computer-based representation of the topography of a landscape. DEMs are a fundamental data layer in Geographic Information Systems (GISs). A large number of primary and secondary terrain attributes, useful for environmental modelling, can be generated from a DEM. This report describes the methods and results involved in the development of a new DEM for Ontario and discusses the role of topography processes, environmental modelling, and forest management. Details are given of the steps involved in generating a DEM from the source data using the ANUDEM procedure and advantages of this procedure over other methods are suggested.
