其他摘要：Human activities have impacted on the coastal zone profoundly; one of the most important aspects was the land use and land cover change that happening on multi-spatial-temporal scales. In this paper, based on the land cover data in 1996, 2001 and 2006 derived from NOAA Coastal Services Center, the spatial-temporal characters of land use and land cover change in USA’s coastal zone were studied. It’s divided into five sub-regions which are: Great Lakes Coast (LC), West Coast (WC), Gulf Coast (GC), Northeast Coast (NC) and Southeast Coast (SC). Statistical methods and GIS techniques were used to analyze the spatial-temporal characters of LUCC. We found that, there’re extensive land-use activities accompanied with substantial shrinkage of forest area in all the five sub-regions as well as significant decreasing of wetland in SC sub-region, and the change of land areas in 1996-2001 was more dramatic than in 2001-2006. Forest land, wetland and cultivated land were the dominant land use types in most area of coastal zone in USA, however, the grassland spread much wide in WC sub-region. From 1996-2001 to 2001-2006, the changing speed was mitigated markedly, therefore the land cover structure was relatively stable in coastal areas and WC was the most stable. Interchanges between forest and grassland were much common process in coastal zone; moreover, interchanges between wetland and forest were significant in SC sub-region. The land use degree was high overall coastal zone in USA and, from the perspective of land use degree index, LC sub-region has the most intensive human activities while WC sub-region, the least.
关键词：LUCC;时空动态;海岸带;美国LUCC;
其他关键词：Spatial-Temporal Dynamics; Coastal Zone; USA
