Soils Inland Wetland

The State of Connecticut defines inland wetlands based on soils. The Connecticut Inland Wetlands and Watercourses Act defines wetland soils to include any of the soil types designated as poorly drained, very poorly drained, alluvial, or floodplain by the National Cooperative Soil Survey, as may be periodically amended, of the Natural Resources Conservation Service of the United States Department of Agriculture. Map units dominated by Connecticut inland wetland soils may have inclusions of non-wetland soils, and non-wetland map units may have inclusions of Connecticut inland wetland soils. On site investigation is necessary to determine the presence or absence of wetland soils in a particular area. 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 miscellaneous areas that normally occur in a repeatable pattern on the landscape and that can be cartographically shown at the scale mapped. 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.康涅狄格州（State of Connecticut）以土壤为依据划定内陆湿地。《康涅狄格州内陆湿地与水道法案》（Connecticut Inland Wetlands and Watercourses Act）将湿地土壤定义为：美国农业部（United States Department of Agriculture）自然资源保护局（Natural Resources Conservation Service）下属国家合作土壤调查（National Cooperative Soil Survey）定期修订的、被归类为排水不良、极差排水、冲积或河漫滩的所有土壤类型。以康涅狄格州内陆湿地土壤为主导的制图单元中，可能夹杂非湿地土壤；反之，非湿地制图单元内也可能包含康涅狄格州内陆湿地土壤。若要确定某一特定区域内是否存在湿地土壤，需开展现场踏勘调查。本数据集为数字化土壤调查成果，整体属于国家合作土壤调查所产出的最精细层级的土壤地理数据。该数据集通过以下方式编制：对地图进行数字化处理、将信息整合至平面校正基底后开展数字化，或结合遥感及其他信息对数字化地图进行修订完善。本数据集包含地理参考数字地图数据与计算机化属性数据。地图数据采用土壤调查区域范围格式，涵盖经野外验证的详细土壤与杂类区域清单——这些要素通常以可复现的模式分布于地表景观中，并可按照成图比例尺进行制图表达。土壤制图单元与国家土壤信息系统（National Soil Information System）关系型数据库中的属性字段相关联，该数据库可提供组成土壤的占比范围及其各项属性参数。