Changes in the salinity of solonetzic soil complexes of the Ergeni Upland under long-term anthropogenic impact (soil studies at the Arshan-Zelmen experimental station of the Russian Academy of Sciences)статья

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[1] Novikova A. F., Gabchenko M. V., Bespalov V. P. Changes in the salinity of solonetzic soil complexes of the ergeni upland under long-term anthropogenic impact (soil studies at the arshan-zelmen experimental station of the russian academy of sciences) // Eurasian Soil Science. — 2009. — Vol. 42, no. 4. — P. 357–368. Unique experiments performed since the 1950s at the Arshan’–Zel’men Experimental Station have formed the basis for afforestation in the dry steppe and semidesert zone without irrigation on the salt-affected soils of solonetzic soil complexes of the Ergeni Upland. Ameliorative measures favored the accumulation of productive moisture in the upper 2-m-thick soil layer, which ensured the growth of trees and the partial leaching of soluble salts to a depth of 1–1.4 m. However, no complete desalinization of the soil profiles took place. The degree of removal of exchangeable sodium from the exchange complex (soil dealkalization) was smaller. The monitoring of changes in the salt status of the soils upon agroforest reclamation was performed until the early 1980s. Our investigations of 2005–2006 showed that the soil amelioration is still in progress: the salt maximum in the profile of the solonetzes descended to a depth of 2.2 m, and the exchangeable sodium was lost from the plow layer (0–40 cm). Plowed soils between forest shelterbelts were also subjected to desalinization and dealkalization of their soil profile, though less intensely than those under the shelterbelts. [ DOI ]

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