Open AccessThe Optical Characteristics of Aggregates Organic Matter Fractions in Typical Chernozems
Author(s) -
В. А. Холодов,
В. А. Иванов,
Ю. Р. Фарходов,
Nina A Safronova,
З. С. Артемьева,
Н. В. Ярославцева
Publication year - 2017
Publication title -
bûlletenʹ počvennogo instituta imeni v.v. dokučaeva/bûlletenʹ počvennogo instituta im. v.v. dokučaeva
Language(s) - English
Resource type - Journals
eISSN - 2312-4202
pISSN - 0136-1694
DOI - 10.19047/0136-1694-2017-90-56-72
Subject(s) - chernozem , organic matter , humic acid , chemistry , soil organic matter , humus , environmental chemistry , soil water , environmental science , soil science , organic chemistry , fertilizer
The consumption specters of organic matter fractions in ultraviolet and visible parts of specter (UV-visible specters) were investigated. The specters of soluted organic matter, as well as labile humic matters and humic matters itselves, which were extracted from small, medium and large aggregates from typical chernozems of long-term experiments were investigated. The samples of undisturbed chernozems, which are annually collected in the annually hayed steppe and from the chernozem with extreme organic matter degradation, were used (variant of long-termed experiment - irreplaceable black fallow since 1964). On the basis of specters obtained the parameters of optical indices SUVA254, E2/E3, E4/E6 were calculated. The highest differences between the aggregates were revealed in extracts of organic matter. The differences were lower for labile humic matters. There were no differences revealed for humic matters between the optical indices for different aggregates of one type of chernozems use. It is shown that all of the three parameters are not changed symbasically. Hence, all of the three parameters should be used for complete spectral characteristic.