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GIS for Water Resources and Watershed Management - Chapter 10

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Các cửa sông Albemarle-Pamlico học (vượn) đã-được tài trợ dự án thông tin mua lại nhiều hơn năm năm qua ở các vùng của khu vực tài nguyên quan trọng, chất lượng nước, Thủy sản, con người và môi trường (thép và Scully, 1991). Hầu hết các dự án này đã được chuyển giao dữ liệu của họ qua hệ thống thông tin địa lý của loài khỉ (GIS) WS nào tạo ra thông qua một hợp đồng phụ với North Carolina Trung tâm Hệ thống thông tin địa lý (CIMB) | CHAPTER 10 Evaluation of the Albemarle-Pamlico Estuarine Study Area Utilizing Population and Land Use Information Robert E. Holman BACKGROUND The Albemarle-Pamlico Estuarine Study APES has been funding many information acquisition projects over the last five years in the areas of resource critical areas water quality fisheries and human environment Steel and Scully 1991 . Most of these projects have transferred their data over to the APES s Geographic Information System GIS which was created through a subcontract with the North Carolina Center for Geographic Information System CGIA . GIS has the ability to bring together enter display edit and manipulate data based information with digital mapping locational attributes . At the time of this study the Center CGIA had or was creating all of the needed databases. CGIA was able to combine the data layers in various ways to analyze the relationship among different layers in a visual as well as a statistical manner. The study area encompasses approximately 23 250 square miles and includes all or portions of 37 counties in eastern North Carolina and 19 counties in Southeastern Virginia. There are six counties along the coastline 9 counties along the sounds and 41 cities counties that lie in the upper drainage basin Figure 10.1 . This study also incorporates all or portions of 6 major river basins including the Chowan Pasquotank Lower Roanoke Tar-Pamlico Neuse and White Oak Figure 10.2 . Each basin is divided into subbasins as follows Chowan 13 Pasquotank 8 Lower Roanoke 3 Tar-Pamlico 8 Neuse 14 and White Oak 5. METHOD The analytical method was broken into three phases. Phase One was the creation of county land use maps from the existing Landsat classification scheme. These map products were sent to U.S. Fish and Wildlife and county officials to determine the accuracy of the defined land use classes. The land use maps were also used by the author during flights over the coastal and metropolitan areas to further clarify .