ПОКАЗАТЕЛИ СОСТОЯНИЯ ЛЕСНЫХ ЭКОСИСТЕМ ЛЕСОСТЕПИ ПРИВОЛЖСКОЙ ВОЗВЫШЕННОСТИ

Forest ecosystems transformation reflected to the reduction of the forest areas, fragmentation forests massifs, composition and structure alteration. Complex criteria to estimate of the forest ecosystems condition Volga Upland forest-steppe elaborated.

DESERTIFICATION AND PROTECTIVE AFFORESTATION. CHALLENGES. INTERACTION STRATEGY

The issues of strategy for the formation of protective forest plantations systems in desertification processes areas that can stabilize environmental degradation, increase the effectiveness of measures to restore soil fertility, reduce the discomfort level in places of work and residence of people and ensure environmental and food security of the country are described.

WATER REGIME OF ALLUVIAL MEADOW SOIL IN THE DRY STEPPE ZONE OF WESTERN TRANSBAIKALIA

Based on the monitoring of changes in climate indicators of the dry-steppe zone of Western Transbaikalia over the past 40 years, it has been revealed that the amount of effective rainfall, starting from the second six-year cycle, is steadily decreasing with a simultaneous increase in the amount of ineffective rainfall. As a result, there is a lack of moisture in the root layer of the soil and a soil drought is formed.

SPACE MONITORING OF HYDROLOGICAL CHANGES IN ARALCASPIAN REGION

For the test sites of the Aralo-Caspian region subjected to degradation and desertification, the seasonal dynamics of the brightness temperatures of the underlying surface, measured from the SMOS satellite (Soil Moisture Ocean Salinity), was studied. On the example of a polygon in the northern part of the Caspian Sea, the influence of changes in the phrenological phases of the ice cover on the microwave radiation of the underlying surface is noted. The regularities of microwave radiation of inland water bodies and the sandy-saline desert Aralkum, formed on the site of the dried bottom of the Aral Sea, have been studied.

REHABILITATION AGRICULTURE SYSTEMS ON DEGRADED SOILS IN THE HUMID ZONE

Most of the arable soils that became deposits at the turn of the 21st century have lowered their agroecological potential. This is due to degradation processes, which manifest in various forms depending on the structure of the soil cover, types of anthropogenic impact, and farming systems used. Assessing theagroecological potential of degraded soils is becoming more complicated due to global climate change. Thus, the problem arises of developing rehabilitation soil-conservation farming systems adapted to climate change and modern socio-economic conditions.

RELECTIVE SIGNS OF DEGRADATION IN POSTAGROGENIC SOILS OF ANTI-AGRICULTURAL AREAS OF EAST CRIMEA

The results of a study of the physicochemical parameters of fallow soils in the ancient Bosporos chora (Kerch Peninsula) are presented in the article. The most long-lasting indicators of agropedogenesis are associated with the water resistance of aggregates and the composition of organic matter, as was found.

CRITERIA AND INDICATORS OF VULNERABILITY OF AGRARIAN LAND USE SOILS TO DROUGHT TO DEVELOP MEASURES TO MITIGATE THEIR CONSEQUENCES (ON THE EXAMPLE OF THE BELARUSIAN POLESSYE REGION)

A system of criteria and indicators is proposed to determine the degree of vulnerability of soils of agricultural lands in Belarusian Polessye based on the analysis of climatic changes, natural and anthropogenic factors affecting their moisture supply during the growing season.

STEPPE FIRE DYNAMICS IN THE SOUTH-EAST OF THE EUROPEAN PART OF RUSSIA

The paper presents the results of geoinformation mapping of burned areas in zonal landscapes of the Astrakhan, Volgograd regions and the Republic of Kalmykia for 1998-2019. In total, over the studied period, more than 6 million hectares were covered by fire, more than 15 thousand fires were identified. The total burnt area, excluding recurrence, is more than 15 million hectares. Some areas have burned out up to 11-14 times in 20 years.

SPATIOTEMPORAL DYNAMICS OF AQUATIC AND ASSOCIATED GEOSYSTEMS IN THE SOUTH OF WESTERN SIBERIA UNDER CLIMATE CHANGE

An unstable lake levels are characteristic for the Ob Plateau territory. Moreover, there are reciprocal level fluctuations. In this regard, both in the steppe and forest-steppe zones of the Plateau, a significant part of geosystems of underlying locations are periodically affected by the hydromorphic factor. It is manifested in the structure of soil cover, micro- and nanorelief, and composition of plant associations.

METHODOLOGICAL FEATURES OF THE ASSESSMENT OF SPATIAL ORGANIZATION BALANCE OF UNPROTECTED ARID LANDS

The new algorithm for assessment of spatial organization balance of the agricultural land usage on frontier dry steppe territories of Russia and Kazakhstan is developed. Land usage strategy is developed based on this algorithm.