Assessment of ecological condition of Kosh stone pit adjacent agrocenoses and the improvement measures

Abstract

The article analyzes and presents the results of the impact studies of the Kosh stone pit on the productivity of the agro-ecological systems of the Kosh, Ujan and Avan communities in the Ashtarak district of the Republic of Armenia. Studies have shown that under the influence of tuff quarry dust, scrap, among other anthropogenic factors, decreased the productivity of natural agro-cenoses in the adja- cent communities of the stone pit (Kosh, Ujan), deteriorated the photosynthetic capacity of plants, decreased air permeability reduced humus and macro-food-elements amounts, while no significant negative impact was observed on the productivity of agro-cenosis in the Avan community, which is essentially away from the stone pit. At the same time, it was substantiated that in order to mitigate the negative impact of the stone pit on the agro-cenosis of the adjacent surrounding communities and to increase the fertility of the soils, it is necessary to carry out fertilization works with mineral-organic fertilizers, and perennial grasses in grasslands sowing works according to the degree of land degradation and prescribed improvement measures.