Jul 11, 1985 · One of the most distinctive aspects of soil formation under grassland in temperate climates was recognized in an early classic of pedology, V.V. Dokuchaev's Russian Chernozem. The term ‘chernozem,’ or ‘black earth,’ is an apt description of the thick, dark-colored zone of organic matter accumulation, or A horizon, in soils of relatively ...

Mar 1, 2022 · The Chernozem horizon has a finer texture than the subsoil, which would mirror the preferred ingestion of finer particles by earthworms (e.g. Darwin, 1881, Evans, 1948, Landmaid, 1964). A Chernozem texture finer than subsoil is reported …

Moving southward from the chernozem zone in Russia, effective moisture decreases and A horizons become thinner and lighter-colored, reflecting lower organic carbon content. Similar trends in carbon content and A horizon color are observed along east-to-west transects of decreasing effective moisture in the grasslands of central North America ...

Sep 1, 2019 · Therefore, the main direct reason for the relatively rapid Chernozem leaching and transformation into Retisol in Muszkowice, and possibly more extensively in SW Poland and Central Europe, seems to be the succession of close-canopy beech forests, and, possibly, artificial ‘densification’ (compaction) of other broadleaf/mixed forests ...

Sep 1, 2021 · The functioning of Haplic Chernozem in the bare fallow regime for 52 years caused sharp changes in the distribution of its organic and organo-mineral fractions: the amount of Free OM (LF fr) decreased by 12-fold, Occluded OM (LF oc) more than 3.5-fold, and the amount of clay fraction by more than 1.2-fold, while the Res fraction demonstrated ...

Dec 1, 2021 · Chernozem is a vital agricultural soil source in northeastern China (Zhao et al., 2016b). In the last few decades, soil erosion and human activities have led to massive losses of SOM, triggering serious soil degradation in this region (Yao et al., 2013, Wang et al., 2020). However, the enzymatic mechanism of SOM loss in chernozem northeastern ...

Mar 1, 2016 · Chernozem MDZ is characterized by weak development of pedogenesis as the following magnetic parameters: χ, χ ARM, M s and M rs have lower values than the other profiles (Fig. 5, Fig. 6). For the MDZ profile, the depth extension of pedogenic processes is …

Nov 1, 2024 · The Chernozem, as a typical black soil, is characterized by high fertility and crop production resulting from a high content of soil organic matter (Wang et al., 2020). However, the excessive use of synthetic fertilizers has caused a substantial loss of soil organic matter, leading to severe decline in soil fertility ( Yang et al., 2023 ...

Furthermore, within the buried chernozem layers, the proofs of woody plants have also been discovered through phytolith, charcoal, and NIRS. This indicates that Chernozems can develop under forest vegetation or have present for an extended period (Barczi et …

Aug 1, 2024 · Three profiles located in the municipality of Corumbá-MS were studied, namely Phaeozem (profiles P1), Gleysol (profile P2) and Chernozem (profiles P3). In all profiles, high concentrations of Ca 2+ , Mg 2+ and K + elements were observed, mainly derived from the sediments of the Serra da Bodoquena and the Urucum-Amolar residual plateau, ion ...