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Особенности строения почв Китая в провинции Ганьсу, развитых на Лёссовом платостатья
- Автор: Панин П.Г.
- Сборник: Материалы II Международной научной конференции «Современные исследования в естественных науках»,
- Год издания: 2015
- Место издания: Владивосток
- Первая страница: 164
- Последняя страница: 169
- Аннотация: Joint group of the laboratory of evolutionary geography Institute of Geography RAS and Lanzhou University under the leadership of prof. A.A. Velichko and prof. Yang Taibao conducted field research of Jingyuan section in 2014 and made a description of modern soil on the Loess Plateau in the central part of China. Profile of soil sections represented by the following horizons Ad-A1-B-BC. Micromorphological properties of modern soils is characterized by brown with a grayish tinge dusty internal soil mass, condensed and homogeneous structure, with different types of round aggregates, filled with dissolved salts minerals. Physical and chemical parameters of the soils is characterized by a high content of total iron equally widespread in the profile (10011-12840 mg/kg), pH 8,13-9,42, high content of humus 1,81-3,38 %; gypsum content of 0,1-0,59 %; manganese (gross form) 229-312 mg/kg, bicarbonates 0,67-0,98 mmol/100 g. It is noted high content of chloride ions in the aqueous extract 93,33-2004,83 and sulfate ions 115,2-6399,36 mg/kg, calcium ions 1,51-27,66 mg/kg, magnesium ions 0,78-5,48 mg/kg; exchange sodium ion 0,02-0,85 mmol/100 g; calcium and sodium in the aqueous extract respectively 0,252-4,192 and 0,05-7,9 mmol/100 g. Considering above stated, the modern soil of North-Western Loess Plateau can be classified as semi-desert brown silty slightly saline with a predominance of chloride-sulfate type of salinity
- Добавил в систему: Панин Павел Геннадьевич