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Custom Soil Resource Report <br /> Vegetative Productivity <br /> This folder contains a collection of tabular reports that present vegetative <br /> productivity data.The reports(tables)include all selected map units and <br /> components for each map unit. Vegetative productivity includes estimates of <br /> potential vegetative production for a variety of land uses, including cropland, <br /> forestland, hayland, pastureland, horticulture and rangeland. In the underlying <br /> database, some states maintain crop yield data by individual map unit component. <br /> Other states maintain the data at the map unit level.Attributes are included for both, <br /> although only one or the other is likely to contain data for any given geographic <br /> area. For other land uses, productivity data is shown only at the map unit <br /> component level. Examples include potential crop yields under irrigated and <br /> nonirrigated conditions,forest productivity,forest site index, and total rangeland <br /> production under of normal,favorable and unfavorable conditions. <br /> Rangeland and Forest Vegetation Classification, <br /> Productivity, and Plant Composition <br /> In areas that have similar climate and topography,differences in the kind and <br /> amount of rangeland or forest understory vegetation are closely related to the kind <br /> of soil. Effective management is based on the relationship between the soils and <br /> vegetation and water. <br /> This table shows,for each soil that supports vegetation,the ecological site, plant <br /> association,or habitat type; the total annual production of vegetation in favorable, <br /> normal, and unfavorable years;the characteristic vegetation; and the average <br /> percentage of each species.An explanation of the column headings in the table <br /> follows. <br /> An ecological site,plant association, or habitat type is the product of all the <br /> environmental factors responsible for its development. It has characteristic soils that <br /> have developed over time throughout the soil development process;a characteristic <br /> hydrology, particularly infiltration and runoff that has developed over time; and a <br /> characteristic plant community(kind and amount of vegetation). The hydrology of <br /> the site is influenced by development of the soil and plant community.The <br /> vegetation, soils, and hydrology are all interrelated. Each is influenced by the others <br /> and influences the development of the others.The plant community on an <br /> ecological site, plant association,or habitat type is typified by an association of <br /> species that differs from that of other ecological sites, plant associations, or habitat <br /> types in the kind and/or proportion of species or in total production. Descriptions of <br /> ecological sites are provided in the Field Office Technical Guide,which is available <br /> in local offices of the Natural Resources Conservation Service(NRCS). <br /> Descriptions of plant associations or habitat types are available from local U.S. <br /> Forest Service offices. <br /> Total dry-weight production is the amount of vegetation that can be expected to <br /> grow annually in a well managed area that is supporting the potential natural plant <br /> community. It includes all vegetation,whether or not it is palatable to grazing <br /> animals. It includes the current year's growth of leaves,twigs, and fruits of woody <br /> plants. It does not include the increase in stem diameter of trees and shrubs. It is <br /> expressed in pounds per acre of air-dry vegetation for favorable, normal, and <br /> 44 <br /> SUMMIT BRICK AND TILE COMPANY-EDMUNDSON CLAY MINE NOVEMBER 2023 <br />