L. A. Dimeyeva, V. N. Permitina, A. F. Islamgulova, R. T. Iskakov
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引用次数: 0
Abstract
A map of ecosystems, reflecting the spatial patterns and diversity of the soil–plant cover within the boundaries of landscape units, has been compiled for a test plot of the Caspian Lowland located at the contact of the Early Khvalyn and the Late Khvalyn sea plains. The heterogeneity of the plant and soil cover of this area is related to the microrelief, conditions of soil moisture, and soil salinity, which results in the formation of a complex pattern. The distribution of ecosystems in the Ural River valley is determined by the distance from the riverbed, the relief, and the moisture regime: groups of willow and poplar shoots are replaced by woodreed–poplar floodplain forests and forbs meadows. Vegetation undergoes anthropogenic transformation. The impact of fires is the strongest with respect to the affected area, and technogenically disturbed lands occupy a smaller area. Overgrazing areas are allocated to wells and wintering places. Regardless of the transformation factors, weedy vegetation (of annual saltwort and ephemerals) is formed in disturbed areas.
期刊介绍：
Arid Ecosystems publishes original scientific research articles on desert and semidesert ecosystems and environment:systematic studies of arid territories: climate changes, water supply of territories, soils as ecological factors of ecosystems state and dynamics in different scales (from local to global);systematic studies of arid ecosystems: composition and structure, diversity, ecology; paleohistory; dynamics under anthropogenic and natural factors impact, including climate changes; studying of bioresources and biodiversity, and development of the mapping methods;arid ecosystems protection: development of the theory and methods of degradation prevention and monitoring; desert ecosystems rehabilitation;problems of desertification: theoretical and practical issues of modern aridization processes under anthropogenic impact and global climate changes.
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