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2010-12-08_PERMIT FILE - C1981008A (14)
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2010-12-08_PERMIT FILE - C1981008A (14)
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Last modified
8/24/2016 4:27:43 PM
Creation date
1/21/2011 5:16:25 PM
Metadata
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Template:
DRMS Permit Index
Permit No
C1981008A
IBM Index Class Name
Permit File
Doc Date
12/8/2010
Doc Name
Vegetation Information
Section_Exhibit Name
Section 2.04.10 Vegetation Information NH2 Mine Area
Media Type
D
Archive
Yes
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Table 2.04.10 -6 <br />Mean Herbaceous Production (g/0.25m For The Irrigate <br />Pasture Vegetation Type, New Horizon 2 Study Area, 1987 <br />Mean Herbaceous Production g/0.25m <br />g /m <br />Ibs /ac <br />kg /ha <br />79.2 <br />316.8 <br />2822.6 <br />3168.0 <br />Note: s = 54.2 (g/0.25M <br />N =51 <br />Minimum sample size required (n, = 127 <br />the operator during the 1987 growing season resulted in a very low productive state. Likewise, <br />sample 20 occurred in an area that receives some benefit from a ground water seep, as well <br />as the normal application of irrigation water. A summary of the individual production plot data <br />is presented in Attachment 2.04.10 -6 (formerly Peabody Appendix 10 -2 (Table 2 -2)). <br />The irrigated pasture type contains incidental woody species at varying densities based on the <br />level of management or maintenance applied to these pastures. All woody plants are invaders <br />in the irrigated pasture type. Some operators periodically grub out the woody plants, while <br />others allow their continued existence. The actual densities observed in the field were low, a <br />fact borne out by the lack of woody plants present in the cover samples (Attachment 2.04.10 -6, <br />formerly Peabody Appendix 10 -2, Table 2 -1). Therefore, an estimate of woody plant density <br />was made by directly counting individuals from stereo color aerial photographs (1" = 500' <br />scale) flown in June 1987. Field checks for verification were made in mid - September 1987. <br />As shown in Table 2.04.10 -7, the stem density averaged a low six per acre, comprised of the <br />five species listed. The total estimate for the type was 947 trees. <br />Revised September 2010 (PR 06) 2.04.10 -31 <br />
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