Northampton County soils 2014

This data set is a digital soil survey and generally is the most
detailed level of soil geographic data developed by the National
Cooperative Soil Survey. The information was prepared by digitizing
maps, by compiling information onto a planimetric correct base
and digitizing, or by revising digitized maps using remotely
sensed and other information.

This data set consists of georeferenced digital map data and
computerized attribute data. The map data are in a soil survey area
extent format and include a detailed, field verified inventory
of soils and nonsoil areas that normally occur in a repeatable
pattern on the landscape and that can be cartographically shown at
the scale mapped. A special soil features layer (point and line
features) is optional. This layer displays the location of features
too small to delineate at the mapping scale, but they are large
enough and contrasting enough to significantly influence use and
management. The soil map units are linked to attributes in the
National Soil Information System relational database, which gives
the proportionate extent of the component soils and their properties.

This data is hosted at, and may be downloaded or accessed from PASDA, the Pennsylvania Spatial Data Access Geospatial Data Clearinghouse http://www.pasda.psu.edu/uci/DataSummary.aspx?dataset=1124

本数据集为一项数字化土壤调查，通常为美国国家合作土壤调查所开发的土壤地理数据中最详尽的一级。该信息通过数字化地图、在平面正确基准上汇编信息并进行数字化，或通过利用遥感及其他信息修订数字化地图而编制。数据集包含地理参照的数字化地图数据和计算机化属性数据。地图数据采用土壤调查区域范围格式，并包含对土壤以及非土壤区域进行的详细、实地验证的清单，这些区域通常在景观中以可重复的模式出现，且可在所绘制比例尺上进行地图表示。可选的特殊土壤特征层（点状和线状特征）用以显示那些在测绘比例尺下难以描绘但足够大且对比度足够高的特征位置，这些特征足以显著影响土地利用和管理。土壤图斑单元与国家土壤信息系统关系型数据库中的属性相链接，提供了组成土壤的比例范围及其属性。该数据集托管于宾夕法尼亚空间数据访问（PASDA）地理空间数据中心，可通过http://www.pasda.psu.edu/uci/DataSummary.aspx?dataset=1124进行下载或访问。