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1990 to 1995 Dorchester County Change Analysis Data


The map below shows the 1990 to 1995 change analysis data. These data were analyzed according to the Coastal Change Analysis Program (C-CAP) protocol to determine land cover. The purpose of this classification is to improve the understanding of coastal uplands and wetlands, and their linkages with the distribution, abundance, and health of living marine resources.

Land cover classifications were conducted for the coast of South Carolina using remotely sensed imagery, primarily Landsat Thematic Mapper (TM), from 1990 and 1995. After the land cover had been classified and a ground truth accuracy assessment study had been conducted, the two classified images, in this case 1990 and 1995, were subtracted from each other creating a change analysis map. Areas that are dark gray or black are regions that exhibited no change over the study period. To view a more detailed description of the data, click here.


Dorchester County Change Analysis Data


  1995   1990    
Land Cover Classes # Acres % of Acres # Acres % of Acres Change in Acres
Developed - High Intensity 2,261 1 2,202 1 58
Developed - Low Intensity 6,518 2 6,353 2 165
Cultivated Land 28,806 8 29,119 8 -313
Grassland 35,662 10 26,688 7 8,975
Deciduous Forest 2,540 1 2,837 1 -297
Evergreen Forest 55,952 15 53,615 14 2,338
Mixed Forest 29,890 8 31,959 9 -2,069
Scrub/Shrub 107,509 29 114,782 31 -7,273
Palustrine Forest 87,380 24 89,990 24 -2,610
Palustrine Scrub/Shrub 5,956 2 5,913 2 43
Palustrine Emergent Wetland 2,066 1 2,304 1 -238
Estuarine Emergent Wetland 1,096 0 1,123 0 -27
Unconsolidated Shore 2 0 2 0 0
Bare Land 2,437 1 1,193 0 1,244
Water 1,747 0 1,744 0 3
Total 369,821 100 369,821 100 0


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