Tongass National Forest Size Density Model Output

This data represents the output of the Size Density Model which classifies vegetation into 7 categories. This dataset is a derived data set using Tongass National Forest Covertypes, Tongass National Forest Hydric Soils, NWI Hydric Soils, and Aspect. They NWI Hydric soils were only used where the forest had not mapped soils such as Private Lands and Wilderness areas.There is a white paper that should go along with this metadata. T:\FS\Reference\GeoTool\r10_tnf\Metadata\SizeDensity\final_SizeDensity_white_paper_03262009.pdf本数据集为尺寸密度模型（Size Density Model）的输出结果，该模型可将植被划分为7个类别。本数据集属于衍生数据集，其数据源涵盖通加斯国家森林植被覆盖类型（Tongass National Forest Covertypes）、通加斯国家森林水成土（Tongass National Forest Hydric Soils）、NWI水成土（NWI Hydric Soils）以及坡向（Aspect）。仅在通加斯国家森林未完成土壤测绘的区域（如私有土地及荒野区域），方才使用NWI水成土数据。本元数据配套一份白皮书，文件路径为：T:FSReferenceGeoTool 10_tnfMetadataSizeDensityfinal_SizeDensity_white_paper_03262009.pdf