Chernozem - an overview | ScienceDirect Topics
1985年7月11日 · 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 ...
Earthworms, Darwin and prehistoric agriculture-Chernozem …
2022年3月1日 · 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 from other sites (e.g. Altermann et al., 2005).
Chernozem - an overview | ScienceDirect Topics
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 ...
Mechanisms of biochar-based organic fertilizers enhancing maize …
2024年11月1日 · 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 ...
Origin, age and transformation of Chernozems in ... - ScienceDirect
2019年9月1日 · 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 ...
Oxidases and hydrolases mediate soil organic matter …
2021年12月1日 · 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 ...
Chemical structure of soil organic matter and its role in aggregate ...
2021年9月1日 · 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 ...
Distribution of prokaryotic communities throughout the …
2018年6月1日 · Chernozem under fallow had a slightly alkaline pH straight from the surface (Fig. 1; Appendix B, Table S1). All three soils characterized by the high clay (up to 49.8%) and silt (up to 53.2%) contents (Appendix B, Table S2). The A horizons of forest chernozem had much lower clay content and higher moisture content compared to fallow and arable ...
Divergent response of Chernozem organic matter towards short …
FC of Chernozem samples was measured in the preliminary experiment after sample capillary saturation during 48 h and gravimetric analysis. Then 36 out of 48 containers were randomly selected and sown on the surface with seeds of Poa pratensis L. at a rate of 5–10 seeds per cm 2 .
Chernozem properties of Black Soils in the Baltic region of …
2014年1月1日 · Lorz and Saile (2011) conclusively argued that the distribution of Chernozem and bandceramic settlements cannot be the primary reason for Chernozem formation in Central Europe. Table 1 . Selected site and soil characteristics of sample sets of different Black Soils from the German Baltic region and soils investigated in comparison.