REP48609

• Permit No: C1981021
• IBM Index Class Name: Report
• Doc Date: 1/16/1996
• Doc Name: EVALUATION OF REVEGETATION SUCCESS AT THE WALDEN COAL CO MINE SITE
• Permit Index Doc Type: ANNUAL RECLAMATION REPORT
• Media Type: D
• Archive: No

Table 6. TRENDS IN MEAN COVER FOR THE RECLAIMED AREA AT THE WALDEN COAL PROJECT SITE. BASED ON DATA
COLLECTED BETWEEN 1989 AND 1995. MEAN COVER VALUES IN PERCENT.
Year
Species 1989 1990 1991 1992 1993 1999 1995
Sample Size 20 20 20 20 20 20 20
COOL SEASON PERENNIAL GRASSES
d 7
40 15
20
Agropyron
asys to chyum . . 8.70 15.90 17.40 10.50 6.90
Agros tin scabra 0.00 0.01 0.00 0.00 0.00 0.00 0.00
Agropyron smi thii 1.90 2.70 1.10 0.40 0.90 0_90. 0.01 ,~,
Agropyron spicatum 0.00 0.01 0.01 0.01 0.01 0.01 0.00
Agropyron tra chyca alum 0.00 0.00 0.00 0.10 0.00 0.00 0.00
Ceta to chloa margins to 0.00 0.00 0.00 0.00 0.00 0.01 0.00
Deschampsia caespitosa 0.00 0.01 0.00 0.00 0.00 0.00 0.00
~ Festuca idahoensis 0.00 0.00 0.00 0.00 0.80 0.00 0.00
r
~o Horde um bta chyantherum
i 0.00 0.10 0.00 0.00 0.00 0.00 0.00
Horde um jubatum 0.00 0.01 0.01 0.01 0.00 0.00 0.00
Xoeleria macran tha 0.00 0.00 0.00 0.00 0.01 0.00 0.00
Oryzopsis hymenoides 0.00 0.01 0.01 0.01 0.01 0.10 0.01
Poa ampla 0.70 0.00 0.00 0.00 0.10 0.01 0.00
Stipa col umbiana 0.00 0.00 0.00 0.00 0.00 0.00 0.01
Stipa coma to 0.00 0.00 0.00 0.10 0.00 0.00 0.00
Stipa vi ridula 2.10 1.00 0.01 1.30 0.20 0.90 0.70 y
Subtotal 12.10 19.05 9.89 17.33 19.93 11.93 7.63
INTRODUCED PERENNIAL GRASSES
Agropyron cris to tam 0.00 0.01 0.00 0.01 0.10 0.01 0.01
Agropyron intermedi um 0.00 0.00 0.00 0.10 0.01 0.20 0.01
Alopecurus pra tennis 0.00 2.10 0.01 0.90 0.70 0.50 0.60 -
Bromus inermis 0.00 0.00 0.00 0.01 0.00 0.00 0.01
Elymus jun teas 0.20 2.90 2.80 7.20 6.95 6.90 15.80 ~'
Festuca ovina 0.00 1.50 2.00 0.01 0.30 2.60 0.90
Poa pra tennis 0.00 0.10 0.01 0.00 0.01 0.01 0.00
Subtotal 0.20 6.61 9.82 8.23 8.07 10.22 16.80 '~