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detaildba_tabledescriptionsoildrainageobservationwhere_tablenameobservation

VegBank Data Dictionary: Tables

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DB Table Name	observation
Table	Observation
Notes	This table stores plot observation results that might vary between official observation events.
Description	Observation is a child of plot in recognition of the fact that a plot may be re-sampled and that some of the environmental conditions may change between resampling events.
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Field DB Field Name Req'd? Data Type Misc Flag List? Definition Soil Drainage soilDrainage no varchar (30) n/a closed Identifies the natural drainage conditions of the soil and refers to the frequency and duration of wet periods. The soil drainage classes are defined in terms of (1) actual moisture content (in excess of field moisture capacity) and (2) the extent of the period during which excess water is present in the plant-root zone. Soil drainage class categories conform to the FGDC Soil Geographic Data Standards, September 1997. (http://www.fgdc.gov/standards/documents/standards/soils/soil997.PDF.) Definitions are derived from Grossman et al. (1998) and Sims et al. (1997).