[PDF] Application Of A Computer Automated Wetlands Inventory To Regulatory And Management Problems eBook

Author : Carol Arlene Johnston
Publisher :
Page : 9 pages
File Size : 50,4 MB
Release : 1988
Category : Wetland management
ISBN :

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Wisconsin Wetlands Inventory (WWI) maps prepared by the Wisconsin Department of Natural Resources (WDNR) were computerized to increase their versatility. Wetland boundaries and classifications determined by stereoscopic interpretation of 1:20,000 photographic aerial photography were field checked and drafted onto reproducible 1:24,000 photographic base maps. Computer software developed by WDNR was used to: 1) semi-rectify the photographic base to 7.5 minute U.S.G.S. quadrangles, 2) convert the digitized linework and classification codes to a polygon format, 3) report acreage by classification code, and 4) generate map overlays. The WWI maps have provided information for a variety of management, planning, and regulatory applications. Computer-plotted wetland overlays have been created for special needs: quantification of sandhill crane habitat, developing a non-point source pollution abatement plan, and regulating wetlands adjacent to navigable waters. The flexibility of a computer-automated wetlands inventory has enhanced WDNR's ability to carry out its management and regulatory mandates.

Author : National Research Council
Publisher : National Academies Press
Page : 329 pages
File Size : 47,8 MB
Release : 1995-09-06
Category : Science
ISBN : 0309051347

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"Wetlands" has become a hot word in the current environmental debate. But what does it signify? In 1991, proposed changes in the legal definities of wetlands stirred controversy and focused attention on the scientific and economic aspects of their management. This volume explores how to define wetlands. The committeeâ€"whose members were drawn from academia, government, business, and the environmental communityâ€"builds a rational, scientific basis for delineating wetlands in the landscape and offers recommendations for further action. Wetlands also discusses the diverse hydrological and ecological functions of wetlands, and makes recommendations concerning so-called controversial areas such as permafrost wetlands, riparian ecosystems, irregularly flooded sites, and agricultural wetlands. It presents criteria for identifying wetlands and explores the problems of applying those criteria when there are seasonal changes in water levels. This comprehensive and practical volume will be of interest to environmental scientists and advocates, hydrologists, policymakers, regulators, faculty, researchers, and students of environmental studies.