Systematic Structure, Ecology and Economical Meaning of Soil Macrofauna of Zarafshan Valley’s Orchards

Abstract

It has been established that the soils macrofauna in orchards includes 28 species belonging to 8 families and

20 genera. Of these, there are 9 types of terrestrial mollusks: 6 families and 6 genera; 5 species o f earthworms: 1 family and 3 genera, and 14 species of insects: 1 family and 10 gener a, 4 species of earthworms, 4 species of terrestrial molluscs and 6 species of insects were identified as new for th e studied area.As studies result of orchards soils macrofauna of Zaravshan valley, it was found that insects accoun ted for 50%, terrestrial molluscs 32% and earthworms 18%. It has been established that the macrofauna of the soils of the orchards of the Zeravshan Valley, including earthworms, terrestrial mollusks, insects a nd their larvae in terms of their species and quantitative composition, the ecological group of geobionts is represented by the largest number of species - 18, which amounted to 64.33%, species of the xerogigrobiont group - 14 and 14.2%, xerobiont species - 3 and 10.7%, and hygrobiont, psammobiont and xeromesobiont groups by 1 species, which was 3.57%.