Cherkashin A.K., Bibaeva A.Yu. FIELD AND REMOTE RESEARCHES AND MATHEMATICAL MODELING OF MOUNTAIN-STEPPE ECOSYSTEMS ON LANDSCAPE BASIS // Arid ecosystems. 2020. V. 26. № 4 (85). P. 108-115. | PDF
The results of research, construction and information support of ecosystem models based on spatial data using landscape GIS technology are discussed. The article considers the features of building models to describe the degradation of mountain-steppe ecosystems in the coastal zone of the lake Khubsugul (Mongolia) under the influence of natural and anthropogenic factors, taking into account the altitude differentiation of different types of ecosystems. Mathematical models are theoretically justified in the form of ordinary differential equations on a parameter and partial derivatives on factors of influence in terms of the reliability of ecosystem functioning.
Kust G.S., Andreeva O.V., Lobkovskiy V.A. LAND DEGRADATION NEUTRALITY – THE NEW GLOBAL CONCEPT AND METHODOLOGY FOR THE DRYLANDS RESEARCHING AT NATIONAL LEVEL // Arid ecosystems. 2020. V. 26. № 2 (83). P. 3-9. | PDF
The assessment based on the applying of the concept of Land Degradation Neutrality (LDN) and of the method for assessing LDN indicators for Russian drylands is presented for the first time. It is shown that the LDN is not reached wherever in the arid and semiarid regions in Russian Federation, since the proportion of land that is degraded over total land area in 2001-2015 is everywhere positive and ranges from 9 to 67%. The concept of “LDN index” is introduced for making convenient to compare and rank individual territories. An assessment of some arid regions of Russia according to this indicator is provided. The obtained preliminary results need to be validated and refined based on a comparison with the available national data collected by traditional methods.
Keywords: land degradation neutrality, desertification, drylands, land degradation.