Study of Longtime Soil Formation on Overgrown Quarry on the South of Kazakhstan

Yelikbayev, Bakhytzhan K. (2014) Study of Longtime Soil Formation on Overgrown Quarry on the South of Kazakhstan. International Conference on Earth, Environment and Life sciences (EELS-2014).

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Long-term researches of soil-formation process on reclamate freshly exposed loess are conducted by soil permanent study area of Agriculture University which is situated in Kastanozem soils zone in the foothills of Ile Alatau. Soil permanent study area consists of 72 concreted plots measuring 2 m2. They were filled with loess to a depth of 60 cm in the spring of 1991. Quantity of long studied variants is 5, one of them has natural undisturbed profile of Kastanozem. There is also variant with loess filled in 1971. Different doses of ameliorants were applied and phyto-improvers were seeded on variants, which were filled from 1991. In 1994-1995 test sowing were made and from 1996 it was left as neglected field. According to the research of 1991-2012 years, it was established, that calcium cation is predominant in composition of absorbed bases. Its content of total cations has increased from 66% to 82% after 18 years (1991 -2009) of pedogenenic process. The highest rates of exchange capacity and calcium content in absorbed bases are set on variants Natural Kastanozem, Loess, since 1971, Phytocontrol, Vermicompost, 27 ton ha-1. This confirms the dominant role of the time factor and the reclamation of syngenetic pedogenenic process. Gradual increase of the exchange capacity (from 13.55 to 20.18 meq 100 g-1) in time was established for explored variants. pH on loess in the 0-point of pedogenenic process was 8.2, and it was 7.8 after 21 years of pedogenenic process. Keyword: Soil reclamation, Loess, Soil formation, Soil organic matter, Cation exchange

Item Type: Article
Subjects: Architecture, design
Depositing User: Бахытжан Кошкинбаевич Еликбаев
Date Deposited: 15 Jan 2017 15:00
Last Modified: 15 Jan 2017 15:00

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