Open Access
Table 1
Some properties of agricultural populations of T. hybridum on the levelled coal mining spoils in the forest steppe zone of the Kuznetsk basin (mean ± a.e. and «lim» as fluctuation range)
| Year of observation (year of plant ontogenesis) | Projective cover, % | Number of shoots, pcs/m2 | Number of generative shoots, pcs/m2 | Height of the generative shoots, cm |
|---|---|---|---|---|
| Quaternary deposits, hydraulic dump of the Mohovsky pit | ||||
| Legumes and grasses mixture | ||||
| 1990 (2nd) | 6.5 ±4.5 lim 0-40 | 2.2 ± 1.4 lim 0-15 | 12.3 ± 8.2 lim 0-66 | 41.9 ± 15.9 lim 9.5-80 |
| 1991 (3rd) | 3.6 ± 3.5 lim 0-35 | 2.7 ± 2.5 lim 0-26 | 6.9 ± 6.2 lim 0-64 | 42.0 ± 8.6 lim 20-59 |
| 1992 (4th) | 16.1 ± 6.0 lim 0-45 | 11.6 ± 4.1 lim 0-34 | 0.8 ± 0.7 lim 0-6 | 24.4 ± 1.6 lim 15-35 |
| 1993 (5th) | 0.2 ± 0.1 lim 0-0.5 | 2.1 ± 0.3 lim 0-2 | 0.6 ± 0.6 lim 0-6 | 25.5 ± 2.5 lim 23-28 |
| Permian deposits, levelled coal mining spoils of the Listvyansky pit | ||||
| Clover and grasses mixture, established by the increased seed sowing rate | ||||
| 1991 (2nd) | 17.8 ± 10.7 lim 0-85 | 20.2 ± 12.5 lim 0-119 | 33.1 ± 33.1 lim 0-171 | 21.1 ± 0.8 lim 14-30 |
| 1992 (3rd) | 1.0 ± 1.0 lim 0-10 | 0.4 ± 0.4 lim 0-4 | 4.0 ± 3.2 lim 0-40 | 25.2 ± 3.3 lim 16-30 |
| Grasses mixed with T. pratense | ||||
| 1992 (3-h) | 0.2 ± 0.1 lim 0-1.5 | 0.4 ± 0.3 lim 0-2 | 2.4 ± 1.8 lim 0-17 | 37.0 ± 2.4 lim 30-40 |
| Grasses mixed with Onobrychis arenaria | ||||
| 2000 (11th) | 2.1 ± 1.9 lim 0-20 | 1.1 ± 0.6 lim 0-5 | 2.0 ± 1.2 lim 0-10 | 45.9 ± 3.2 lim 20-60 |
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