Recommendations for Sustainable Greening of Urbanized Ecosystems in Dry-Steppe Zones of Akmola Region, Kazakhstan.

Sarsekova, Dani; Perzadayeva, Akmaral; Kitaibekova, Sara; Ayan, Sezgin

The research investigates woody species vegetation of roadside greenery of Nur- Sultan/Karaganda (24 woody plants) and Nur-Sultan/Borovoye highways (16 woody plants). According to the species composition, more than 70% of woody vegetation are dust, gas, and drought resistant, and about 60% are salt tolerant. From 18 woody species planted on research plot of the university campus, 58% of the woody plants have taken root. Likewise, in 2 species, a high survival rate of more than 85% was observed (Acer negundo L. with 96.5% and Ulmus pumila cv. jinye with 85.5%); in 7 species -- satisfactory survival rate of 25-85% (Pinus sylvestris with 79.4%; Syringa oblata Lindl with 76%; S. pubescens Turcz. with 74%; Ulmus laevis Pall. with 65.5%; Amorpha fruticosa Linn with 63.5%; Еlaeagnus angustifolia L. with 62.5%; Malus 'Royalty' with 39.5%); in 5 species -- low survival rate of less than 25% (Catalpa ovata G.Don. with 17.5%; Salix myrsinifolia Salibs. with 16.5%; Fraxinus americana L. with 15.5%; Syringa reticulata (Blume) H. Hara with 14.5%; Amygdalus triloba (Lindl) Ricker with 10.5%); 4 species have no survival (Fraxinus bungeana A.DC., Populus euphratica Oliv., Haloxylon persicum Bunge, Tamarix laxa (Willd.). The soils of roadsides of Nur-Sultan/Karaganda, Nur-Sultan/Borovoye motorways showed very low and low levels of humus (<4%) and easily hydrolyzed nitrogen (<30mg/kg), characterized by significant variability of mobile P. The roadsides of Nur-Sultan/Karaganda and Nur-Sultan/Borovoye highways are characterized by an average and high content of exchange K, and weak salt content (from 0.04% to 0.17%). The salinity chemistry is sulfate-bicarbonate. Nur- Sultan/Borovoye highway is characterized from mild to very strong sulfate and chloride salinization (from 0.15% to 0.85%). The amount of toxic salts is 23.20%. As a result, in order to optimize the sustainable ecological conditions of landscape and intercity systems in urbanized areas in dry-steppe regions, more effectively, it is highly recommended to use woody species with high survival percentage and growth performance.

KAZAKHSTAN; ASTANA (Kazakhstan); WOODY plants; TAMARISKS; METROPOLITAN areas; SCOTS pine; PLANT species; SURVIVAL rate; POISONS

Alinteri Journal of Agriculture Sciences, 2021, Vol 36, Issue 1, p99

2564-7814

Academic Journal

10.47059/alinteri/V36I1/AJAS21016