Abstract
The aim of the study was to research the relationship of chemical and micromorphological properties of soils with the growth ofKochia prostrata. The objects of study were the soils on natural pastures of the North-Western part of the Caspian lowland. It was laid 4 soil pits (soils – light solonetz, solonetzic chestnut) with the maximum penetration depth of the main mass of roots of the studied plants.K. prostratais a very plastic forage species that can grow on soils with a wide range of morphological properties, different salt content and their chemical composition. It is revealed that on the background of almost the same content of humus and high content of exchangeable magnesium micromorphological features represent the different degree of manifestation of primary pedogenic processes – humus accumulation, leaching of soluble salts, gypsum accumulation, carbonate enrichment, solonetzization. Despite the different content of exchangeable sodium, in all soils there are fresh clay or humus-clay illuvial coatings, indicating the manifestation of the modern eluvial-illuvial redistribution of fine matter (lessivage or illimerization).
Highlights
Район исследований расположен на северо-западе заволжской части Прикаспийской низменности, территория которой относится к морской бессточной аккумулятивной равнине хвалынского возраста
The aim of the study was to research the relationship of chemical and micromorphological properties of soils with the growth of Kochia prostrata
The objects of study were the soils on natural pastures of the NorthWestern part of the Caspian lowland
Summary
Поступила в редакцию 24.07.2019, после доработки 29.08.2019, принята к публикации 18.12.2019. Резюме: Целью исследования являлось изучение взаимосвязи химических и микроморфологических свойств почв на естественных пастбищах северо-западной части Прикаспийской низменности с произрастанием на них Kochia prostrata (прутняк простертый). Было заложено 4 почвенных полуямы (почвы – солонцы светлые и каштановая солонцеватая) с учетом максимальной глубины проникновения основной массы корней изучаемого растения. K. prostrata – очень пластичный кормовой вид, который способен произрастать на почвах с широким набором морфологических свойств, разным содержанием солей и их химическим составом. Ключевые слова: прутняк, солонцы светлые, каштановая солонцеватая почва, микростроение. Micromorphological features of soils of semidesertic solonetzic complexes under different herbaceous communities with the participation of fodder plant Kochia prostrata (Caspian lowland). 2A.N. Severtsov Institute of Ecology and Evolution, 33 Leninskiy prosp., Moscow 119071, Russian Federation.
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