Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64, 487-496

https://doi.org/10.11118/actaun201664020487
Published online 2016-05-04

The Evaluation of Disturbed Grassland After the Ecological Restoration and Phytoremediation in the Low Tatras National Park

Ján Novák1, Lýdia Turanová2, Ľuboš Vadel2

1Slovak University of Agriculture in Nitra, Faculty of Agrobiology and Food Resources, Department of Grassland Ecosystems and Fodder Crops, Tr. A. Hlinku 2, 949 76 Nitra, Slovak Republic
2Constantine the Philosopher University in Nitra, Faculty of Natural Sciences, Department of Ecology and Environmental Sciences, Tr. A. Hlinku 1, 949 74 Nitra, Slovak Republic

At present the grasslands in the conservation areas are often degraded folowing the abandonment of the pasture and it is necessary to restore them. The aim of this paper was to evaluate the grasslands after the ecological restoration and phytoremediation by different methods. In 2004 the experiment was established on degraded sites at locality Low Tatras National Park (1 126 m a.s.l.) with three treatments (U – unmanaged control, C – managed by cutting, CS – managed by seeding and cutting). In 2013 on C treatment we noticed the increase of the number of species (threefold), the increase of the coverage of plants (twofold) and also the significant increase of the species diversity in comparison with the year 2004. On CS treatment the species diversity has decreased slightly but the forage value has increased more than twofold since 2004. U treatment has remained without changes. The results show the method of seeding the autochthonous species is highly appropriate to increase the forage value of grassland. Spearman correlations between environmental factors (p ≤ 0.05) prove the effect of treatment on the amount of P-soil, P-fyt, K-soil and K-fyt, which show strong negative correlation with the time. On the other hand number of species and EGQ (The evaluation of the grassland quality)correlate with time positively (p ≤ 0.05). The restoration by the mowing is recommended on sites, where the increase of diversity is important. Legumes, C, grasses, K-soil, EGQ, number of species, P-soil, time, dry matter hit the variability of the species significantly (to 96.80% of the total variability). The strongest effect on the overall variability of species had legumes, which is 61% of the total variability. Cutting explain 26% of the variability. The soil in the Low Tatras National Park was recovered to the original state through the reduction of soil nutrient – phytoremediation.

References

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