the applications of gis in the analysis of the impacts of human activities on south texas watersheds的应用gis的分析人类活动的影响在德克萨斯州南部水域.pdf

Int. J. Environ. Res. Public Health 2011, 8, 2418-2446; doi:10.3390/ijerph8062418 OPEN ACCESS International Journal of Environmental Research and Public Health ISSN 1660-4601 /journal/ijerph Article The Applications of GIS in the Analysis of the Impacts of Human Activities on South Texas Watersheds Edmund C. Merem 1,*, Sudha Yerramilli 2, Yaw A. Twumasi 3, Joan M. Wesley 1, 1 1 Bennetta Robinson and Chandra Richardson 1 Department of Urban and Regional Planning, Jackson State University, 3825, Ridgewood Road, P.O. Box 23, Jackson, MS 39211, USA; E-Mails: joan.m.wesley@ (J.M.W.); bennrobinson2002@ (B.R); CRichardson@; (C.R.) 2 National Center for Bio Defense Communications, Jackson State University, Mississippi e-Center @ JSU, 1230 Raymond Road, Jackson, MS 39204, USA; E-Mail: sudha.yerramilli@ 3 Department of Advanced Technologies, School of Agriculture and Applied Sciences, Alcorn State University, 1000 ASU Drive, Jackson, MS 39096, USA; E-Mail: yaw@ * Author to whom correspondence should be addressed; E-Mail: edmund.c.merem@; Tel.: + 1-601-432-6856; Fax: +1-601-432-6862. Received: 23 November 2010; in revised form: 15 June 2011 / Accepted: 20 June 2011 / Published: 23 June 2011 Abstract: With water resource planning assuming greater importance in environmental protection efforts, a