PIE LTER Land Cover (2005), Plum Island Sound estuary, Massachusetts - Raster

This is a seven-category land-cover map of the Plum Island Sound estuary, Massachusetts. The seven categories are: water, tidal flats and soils, Spartina alterniflora, Spartina patens, trees, grass, impervious surface. These medium resolution true color images are considered the new "basemap" for the Commonwealth by MassGIS. The photography for the entire commonwealth was captured in April 2005 when deciduous trees were mostly bare and the ground was generally free of snow. Image type is 4-band (RGBN) natural color (Red, Green, Blue) and Near infrared in 8 bits (values ranging 0-255) per band format.本数据集为马萨诸塞州（Massachusetts）普拉姆岛湾河口（Plum Island Sound estuary）的七类土地覆盖地图，共涵盖以下七个分类：水体、潮滩与潮土、互花米草（Spartina alterniflora）、海滨米草（Spartina patens）、乔木、草本植被以及不透水面。 这批中分辨率真彩色影像被马萨诸塞州测绘与地理空间信息办公室（MassGIS）认定为该州的新型"基准底图"。全州范围的航空影像采集于2005年4月，此时落叶乔木大多处于无叶状态，地表基本无积雪覆盖。该影像为4波段（RGBN）自然色彩格式，包含红（Red）、绿（Green）、蓝（Blue）及近红外（Near infrared）四个波段，单波段采用8位比特存储，像素值范围为0至255。