Describing the nature and extent of land resources and changes over time has become increasingly important, especially in rapidly growing metropolitan areas. In this study, two Landsat satellite image scenes were examined to identify land use and land cover changes for the Lake Pontchartrain Basin between 1982 and 2005. Classification accuracies were based upon ground truth data obtained by global positioning system field collection and photo interpretations. A postclassification change detection analysis was used to identify areas that have experienced conversions in land use or land cover. Comparisons of the land cover maps reveal that a steady growth in population and an increase in commercial and residential development have caused extensive changes to critical habitats throughout the basin. The maps also indicate that the loss of coastal wetlands, combined with shoreline erosion, remains one of the most serious environmental problems facing the Pontchartrain Basin today. The postclassification change detection analysis showed that critical habitats accounted for nearly 40% of the total urban growth between 1982 and 2005. Results also showed that for the time period studied, approximately 25 square miles (15,994 acres) of marsh was converted to open water. This is an overall average decrease of approximately 640 acres per year.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.
Vol. 2009 • No. 10054