Differentification features of modern arid landscapes of Middle Araz plain

The article d4remonstrated Sadarak, Sharur, Boyukduz, Nakhchivan, Julfa, Yayji, Kangarli, Deste, Ordubad, etc., located in the territory of the Nakhchivan Autonomous Republic along the left bank of the Araz River and covering a large area. The features of modern arid-denudation landscape forms formed in such plains as. In the presented scientific work the altered relief, location features of flora and fauna, exposed to anthropogenic influences in the Arazboyu plains of the Nakhchivan Autonomous Republic, as well as the factors that create modern arid landscapes in the area. Key words: Plains of Arazboyu, landscape, anthropogenesis, arid-denudation, differentiation

Concentration and Nitrogen Stocks in the Soils of Semi-Arid Landscapes of Kizlyar Pastures

The results of research on the current state of the nitrogen fund (reserve regime) the Kizlyar pastures. It was found that the total nitrogen ranges from 0.15-0.2 %, nitrogen easily hydrolyzed from 2.4-5.3 mg/100g in light-chestnut, meadow-chestnut soils and saline typical, and has a medium and low degree of security. The humus horizon is more enriched with nitrogen on soils of meadow-chestnut and light-chestnut compared to typical saline. N and C reserves in the soil in spring are 5.0 and 13.4 t/ha, respectively, and in autumn N and C reserves are 1.5 times lower, due to decrease the number of species and projected coverage up to 40-50% of phytocenoses in autumn, and also depends on the climatic conditions of the annual seasonality. In the control area with intensive grazing, nitrogen and carbon reserves in the soil are 1.6-1.8 times lower.

MODERN PROCESSES OF DEGRADATION AND DESERTIFICATION ARID LANDSCAPES OF THE CHECHEN REPUBLIC: ASSESSMENT AND MAPPING

The geoecological analysis of the current state of arid landscapes of the Chechen Republic has shown that the natural and climatic conditions of their functioning are extremely diverse, despite the relatively small territory. However, starting from the second half of the last century, climatic conditions began to change sharply in the direction of aridization, which coincided with the stage of the greatest anthropogenic impact, mainly grazing of small cattle. This has intensified the processes of desertification, taking on an irreversible character in the Central and North-Eastern parts, which is reflected in the maps.

Rhodostrophia crypta, a new species from Middle Asia (Lepidoptera: Geometridae)

Rhodostrophia is a speciose genus which is widespread in arid landscapes of Central Asia. A new species, Rhodostrophia crypta sp. n. is described below from Kazakhstan.