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REP31611
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REP31611
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Last modified
8/25/2016 12:07:49 AM
Creation date
11/27/2007 5:58:07 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981021
IBM Index Class Name
Report
Doc Name
EVALUATION OF REVEGETATION SUCCESS AT WALDEN COAL CO MINE SITE
Permit Index Doc Type
ANNUAL RECLAMATION REPORT
Media Type
D
Archive
No
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,. <br />INTRODUCTION <br />This report presents vegetation cover and species diversity data <br />for the reclaimed areas at the Walden Coal Company Mine site located <br />northeast of Walden, Colorado. The reclaimed areas at the site consist <br />of two parcels: one that was reclaimed in 1984 and a second that was <br />reclaimed in 1988. Sampling results are presented for each of these two <br />areas and also for the two areas combined. <br />METHODS <br />Vegetation cover data were obtained using a point transect method. <br />Witte this approach, observations on plant cover were made at one-meter <br />intervals along a 25 meter transect. At each observation point, cover <br />was evaluated using an optical sighting device. The device consists of <br />an objective lens equipped with sighting cross-hairs, a focusing tube, <br />and a reflecting mirror. The device was mounted on a tripod and was <br />oriented parallel to the ground at, each observation point. The sighting <br />device was attached to a bar that is 0.5 meters in length. Observations <br />1~ <br />were made by recording what was observed at the point of intersection <br />made by the cross-hairs. Two observations were made at each meter along <br />the transect (one on either side of the transect tape), for a total of <br />fifty points per transect. Twenty transects were sampled in the entire <br />area (six in the area seeded in 1984 and fourteen in the area seeded in <br />1988). Data were recorded as "hits" on vegetation (recorded by <br />species), litter, bare soil or rock. The data were summarized by <br />computing mean cover, relative cover (percent of total vegetation cover <br />attributed to each species), frequency (the number of transects of <br />
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