The investigations have disclosed that in case of applying the same agro-technical measures the closer the agro-ecosystem is located to the forest ecosystem, the higher the yield capacity of the cultivated agricultural crops is, and vice versa; the farther the agro-ecosystem is, the lower the yield capacity is. The estimations of economic efficiency have shown that under the influence of forest ecosystem, the productivity of the agro-ecosystem was the highest at a distance of 280 m from the forest edge, where the triticalis yield capacity made 45,6 c/ha, while the economic efficiency of tomato cultivation per hectare made 235500 AMD, pteuto – 912 000 AMD and that of the cabbage– 980000 AMD. While at a distance of 1000-1050 m from the forest edge the economic efficiency of the cultivated agricultural crops was practically reduced to zero. The studies have proved that when establishing afforestation belts they should be located at a distance of no more than 600 m, where the forest belts will have more favorable effect on the sustainability of the agro-ecosystems and will increase their productivity.

The disturbance of equilibrium in agroecological systems of Voghjaberd community and their productivity decrease are mainly due to the strong landslides occurred in that area and to the erodibility of land resources. In the mentioned community 500 ha land area is highly prone to landslides, while 200 and 380 ha land areas are averagely and slightly susceptible to landslides respectively. About 69 % of the agricultural lands are strongly and averagely eroded. Thus, in the landslide areas it is necessary to establish anti-landslide forest strips, while to mitigate erosion in the steep slopes it is necessary to implement perennial plant sowing and fertilization with organic fertilizers in the arable lands and rangelands.

Upon the investigations it has been disclosed that along with the increase of the dimensions in the mining industry, as well as with the increase of rock dump amounts, the organoleptic and chemical indices of the waters in the Sotk and Masrik rivers have also grown up. The amount of suspended particles per liter of water has increased for the last 10 years by 210%...317.0% or by 32.1 mg/l in the waters of the Sotk River and by 13.2 mg/l in the Masrik River. Similar changes have also been observed in the indices of nitrates, sulphates and hydrogen values, which are mainly related to the chemical composition of the mountainous rocks, where the alkaline chemicals mainly predominate (Ca, K, Na, Mg, etc.) and also to the intensive agricultural activities conducted in the given area, particularly in the riverine areas, as well as to the development of the livestock sector. Meanwhile, it has been found out upon investigations that both in the previous 10 years and similarly in 2019, the content of heavy metals and other chemical elements in the Sotk and Masrik Rivers and in the lands of their adjacent agroecosystems, the total intensity of their geochemical stream considerably varied and fluctuated related to the exploitation of the Sotk mine and to the changes of the ore mining dimensions. To reduce the mobility of heavy metals and to improve the ecological-toxicological conditions of the mentioned rivers and ploughlands irrigated with those waters, it is necessary to continuously add the lime amount CaO in the acidic drainage of the mining site so that the water environment reaction would hold up at least within the range of 9 (pH 9). Besides, individual heavy metals (such as tungsten, molybdenum, vanadium, etc.) are more active in the alkaline medium, hence, for their refining it is necessary to install filters as well.