DBPapers
DOI: 10.5593/SGEM2016/HB33/S03.060

INVESTIGATION OF THE FOREST STAGE OF SUCCESSION OF SOWN PHYTOCENOSIS WHEN RESTORING DISTURBED LANDS WITH THE AIM TO GIVE THEM BACK TO BIOSPHERE FOUNDATION

S. Mesyats, M. Novozhilova, E. Volkova
Friday 11 November 2016

References: 16th International Multidisciplinary Scientific GeoConference SGEM 2016, SGEM Vienna GREEN Extended Scientific Sessions, www.sgemviennagreen.org, SGEM2016 Conference Proceedings, ISBN 978-619-7105-81-0 / ISSN 1314-2704, 2 - 5 November, 2016, Book 3 Vol. 3, 469-476pp, DOI: 10.5593/SGEM2016/HB33/S03.060

ABSTRACT

Extension of territories having the disturbed soil-and-vegetation cover decreases their self-restoration capability. Nowadays, almost half of the Earth’s soil cover doesn’t perform its ecosystemic and biospheric functions because of decreasing its bioproductivity and disturbance in the biogeochemical cycle of elements which determine stable functioning of biosphere and providing biodiversity of life.
The state of natural systems is defined by ecological capacity of a territory which is characterized by the phytocenosis bioproductivity in every specific ecosystem type. Therefore, a conceptual approach and a technology for restoring disturbed lands of mining landscapes have been substantiated in compliance with the concept of natural soil-formation according to which the soil is a product of interaction of basement rock, biota, climate, relief and time. Generation of sown phytocenosis without applying a topsoil layer results in formation of biologically active medium which provides rapid generation of biogenic-humus-accumulative horizon and creates conditions for quicker (compare to self-restoration) transfer to phytocenosis having the structure of a surrounding natural landscape.
Stockpiled ore tailings were determined as a case study object while restoring in accordance with the concept of natural soil-formation since they are mining-damaged lands and characterized by absence of self-growth due to wind and water erosions. Monitoring of state of the sown phytocenosis has shown that for the first ten-year period its species composition contains mainly sown species of perennial cereals. During the second ten-year period the species composition is presented by 24 species of 7 higher Tracheophytes families. During the third ten-year period a vertical structure is formed: moss-and-lichen, grass-suffruticous and tree-and-shrubbery layers. In the fourth ten years species diversity of phytocenosis is presented by 78 species of 36 families. Number of tree-and-shrubbery species units per ha is > 50000.
Increase of species diversity during succession due to introducing local species, including trees and shrubberies, leads to creation of the phytocenosis having the structure of the surrounding natural landscape and restores bioproductivity of the area.

Keywords: ecological restoration, the concept of natural soil-formation, sown phytocenosis, phytocenosis having the structure of surrounding natural landscape, bioproductivity

PAPER DOI: 10.5593/SGEM2016/HB33/S03.060, INVESTIGATION OF THE FOREST STAGE OF SUCCESSION OF SOWN PHYTOCENOSIS WHEN RESTORING DISTURBED LANDS WITH THE AIM TO GIVE THEM BACK TO BIOSPHERE FOUNDATION

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