Delineation of Estuarine Management Areas Using Multivariate Geostatistics: The Case of Sado Estuary

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• 作者：Sandra Caeiro ; Pierre Goovaerts ; Marco Painho ; and M. Helena Costa
• 刊名：Environmental Science & Technology
• 出版年：2003
• 出版时间：September 15, 2003
• 年：2003
• 卷：37
• 期：18
• 页码：4052 - 4059
• 全文大小：416K
• 年卷期：v.37,no.18(September 15, 2003)
• ISSN：1520-5851

文摘

The Sado Estuary is a coastal zone located in the southof Portugal where conflicts between conservation anddevelopment exist because of its location near industrializedurban zones and its designation as a natural reserve.The aim of this paper is to evaluate a set of multivariategeostatistical approaches to delineate spatially contiguousregions of sediment structure for Sado Estuary. Theseareas will be the supporting infrastructure of an environmentalmanagement system for this estuary. The boundaries ofeach homogeneous area were derived from three sedimentcharacterization attributes through three differentapproaches: (1) cluster analysis of dissimilarity matrixfunction of geographical separation followed by indicatorkriging of the cluster data, (2) discriminant analysis ofkriged values of the three sediment attributes, and (3) acombination of methods 1 and 2. Final maximum likelihoodclassification was integrated into a geographical informationsystem. All methods generated fairly spatially contiguousmanagement areas that reproduce well the environmentof the estuary. Map comparison techniques based on statistics showed that the resultant three maps are similar,supporting the choice of any of the methods as appropriatefor management of the Sado Estuary. However, theresults of method 1 seem to be in better agreement withestuary behavior, assessment of contamination sources, andprevious work conducted at this site.