Архив метки: succession

ECOLOGICAL AND BIOLOGICAL ASPECTS OF FORMATION PROTECTIVE FOREST STANDS IN ARID REGIONS

Arid Ecosystems

Adamova R.M., Kaziev Mr.A. ECOLOGICAL AND BIOLOGICAL ASPECTS OF FORMATION PROTECTIVE FOREST STANDS IN ARID REGIONS // Arid ecosystems. 2021. V. 27. № 2 (87). P. 26-32 | PDF

Ecological and biological aspects of creating protective forest stands are considered. The results of the research can serve as a basis for the development of measures for the rational use of land resources and the creation of protective forest plantations in arid conditions. An assessment of the introduction resources of dendroflora for the creation of protective forest stands is given and the mycotrophy of species is studied for the first time to determine the possibilities of their use in protective forest stands. Criteria that determine the mycotrophy of woody plants and diagnostics of their resistance make it possible to assess the effectiveness of work on the introduction and reproduction of tree species, and can also be used in the development of a general program for the restoration of natural forest phytocenoses.

Keywords: protective forest stands, arid territories, introduction, reforestation, mycorrhiza, succession.

DOI: 10.24411/1993-3916-2021-10147

DEFLATION IN THE PASTURES OF NORTH-WESTERN CASPIAN

Arid Ecosystems

Manaenkov A.S.,  Rybashlykova L.P. DEFLATION IN THE PASTURES OF NORTH-WESTERN CASPIAN // Arid ecosystems. 2020. V. 26. № 4 (85). P. 116-126. | PDF

Basing on the data of the study of phytoecological conditions and long-term monitoring of successions of the restored vegetation cover, we evaluated the efficiency of methods and techniques of phytomeliorative works in large foci of deflation performed in the 80-90 years of the last century on the chernozemel Pastures. The features of the formation of cultural communities, biological diversity, productivity and stability of secondary vegetation are under consideration in the article. The advantage of complex phytomelioration technologies including the use of woody, semi-shrubby and herbaceous plants was revealed. Proposals for their improvement in the direction of reducing the energy intensity of measures, rational use of long-term reserves of soil moisture, enrichment of secondary phytocenoses with valuable forage plants, increasing their functional longevity have been developed.

Keywords: Black lands, pastures, large centers of deflation, morphology and phytoecological conditions, technologies of phytomelioration, succession, efficiency.

DOI: 10.24411/1993-3916-2020-10126

LONG-TERM DYNAMICS OF VEGETATION RESTORATION OF INDUSTRIAL LANDSCAPES AND CURRENT STATE OF NATURE MEADOW ECOSYSTEMS IN THE BYLYM ARID DEPRESSION (CENTRAL CAUCASUS)

Arid Ecosystems

Chadaeva V.A., Tsepkova N.L.,  Zhashuev A.Zh. LONG-TERM DYNAMICS OF VEGETATION RESTORATION OF INDUSTRIAL LANDSCAPES AND CURRENT STATE OF NATURE MEADOW ECOSYSTEMS IN THE BYLYM ARID DEPRESSION (CENTRAL CAUCASUS) // Arid ecosystems. 2020. V. 26. № 4 (85). P. 127-135. | PDF

Basic trends of dynamics of vegetation restoration on multiple-aged terraces of the tailings storage dam of Tyrnyauz plant were revealed by using the data of fifty-year geobotanical studies within Bylym arid basin. Steppe meadow vegetation is restored faster (20 years up to the formation stage of natural phytocenoses) on upper newly built terraces. Self-overgrowing of long-standing terraces at the foot of the dam is slower (50 years). On the contrary, soil formation is more intense on lower terraces. At present phytocenogenesis can’t be considered accomplished on the dam of the tailings storage. Formation of subalpine steppe meadows on dark-humus soils is predicted on the dam area against the background of low anthropogenic load.

Keywords: flora, industrial landscape, succession, dam of the tailings storage, meadow ecosystems, Central Caucasus.

DOI: 10.24411/1993-3916-2020-10127