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MASSACHUSETTS MRLC FOREST
Description:
The MRLC Forest datalayer is a derivative of the National Land Cover Datalayer (NLCD) developed from Thematic Mapper satellite data acquired by the Multi-Resoultion Land Characterization (MRLC) Consortium. The following landcover classes (with class numbers in parentheses) were selected from the original MRLC NLCD data set (in ARC/INFO Grid format): ---Deciduous Forest (41) - Areas dominated by trees where 75 percent or more of the tree species shed foliage simultaneously in response to seasonal change. ---Evergreen Forest (42) - Areas dominated by trees where 75 percent or more of the tree species maintain their leaves all year. Canopy is never without green foliage. ---Mixed Forest (43) - Areas dominated by trees where neither deciduous nor evergreen species represent more than 75 percent of the cover present. ---Deciduous Shrubland (51) - Areas dominated by shrubs where 75 percent or more of the shrub species shed foliage simultaneously in response to seasonal change. ---Woody Wetlands (91) - Areas of forested or shrubland vegetation where the soil or substrate is periodically saturated with or covered with water as defined by Cowardin et al.