Agricultural Land Use of Wyoming

The purpose of this data layer is to provide a digital layer showing
areas of agriculture and agricultural chemical use in Wyoming. This layer
was designed to be applied in the Wyoming Ground-Water Vulnerability
Mapping Project.

This dataset represents croplands of Wyoming as interpreted from
1:58,200-scale National High Altitude Program (NHAP) color infrared aerial
photography. The photos, which were taken in 1980-1982, were interpreted
and land use designations were hand-drawn onto plots produced at the same
scale as the photos, using a light table. The plots were then digitized
as polygons into ARC/INFO 7.0.2. Valid polygons include
irrigated croplands, non-irrigated croplands, urban lands, golf-courses,
and non-agricultural lands. Golf courses boundaries, which have changed
recently, were later updated with 1994 NAPP photos.

本数据图层旨在提供一个数字化图层，用以展示怀俄明州的农业区域与农用化学品使用范围。该图层专为怀俄明州地下水脆弱性制图项目研发设计。

本数据集基于1:58200比例尺的国家高空计划（National High Altitude Program, NHAP）彩色红外航空摄影影像解译而成，用以呈现怀俄明州的农田分布。该影像拍摄于1980年至1982年间，研究人员借助透光台，将解译得到的土地利用类型手绘于与影像同比例尺的绘图底图之上。随后，这些绘图底图被数字化为多边形要素，并导入ARC/INFO 7.0.2软件中。有效多边形要素涵盖灌溉农田、非灌溉农田、城市用地、高尔夫球场以及非农业用地。鉴于高尔夫球场边界近期已发生变更，后续使用1994年的NAPP航空摄影影像对其边界进行了更新修正。