Abstract—The aim of this study was to evaluate morphologic features, diagnostic qualifiers and enhance classification of alluvial-meadow soils in the floodplain of the Kur River within Azerbaijan. For this purpose, several soil pits were placed in the representative test areas and multiple soil samples collected within field campaigns (2014–2015). Based on the field and laboratory test data, the detailed soil maps of the test areas were compiled, and diversity of alluvial-meadow soils was classified as suborders (subtypes): alluvial-meadow primitive; alluvial-meadow layered (flaggy); alluvial-meadow dark and alluvial-meadow irrigated. It was found out that in the floodplains, local soil variability was predominantly attributed to not only alluvial sediments, but also water table, mineralization rate and salt content of underground water as well flood water play an important role. The mineralization of ground water is weak (1.40–3.70 g/L) and the concentration of hydro-carbonates (HCO₃) varies from 0.56 to 0.92 g/L. No salinization indication found in the profile of alluvial-meadow primitive and alluvial-meadow layered soils, while weak concentration (solid content = 0.40–0.54%) was found at a depth of 80–150 cm in the alluvial-meadow dark soil. Unlike other subtypes, alluvial-meadow dark soil is characterized with the higher biomass (green weight of top = 41.5 c/h and green weight of underground = 142.3 c/h), high mobility of humus substances with predominance of the 1st fraction of humin (20.0–28.1%) and fulvic acids (14.6–22.3%). The ratio of C_h.a : C_f.a reaches 1.18–1.32. For the alluvial-meadow irrigated soil, the second fraction of humin acid (9.3–10.2%) and total content of humin acid ranges from 45.6 to 50.3%. The ratio of C_h.a : C_f.a is larger (1.37–1.50). Depending on the litho logy of alluvial sediments, the content of SiO₂ and R₂O₃ varies in the ranges of 53.0–57.2 and 9.6–26.0%, respectively. For the alluvial-meadow dark soil, decomposition of alum silicates in alkaline hydrolysis is typical (8.7–9.0). The content of SiO₂ and R₂O₃ varies between 47.8 and 50.6%, and 19.7 and 21.6%, respectively. In the topsoil, of the irrigated soils in associated to washing out the content of Ca and CaO content (12.2–13.1%) increases in deeper horizons.

中文翻译：

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亚塞拜疆库尔河泛滥区亚热带半干旱地区冲积草甸土壤的形态学诊断和命名

摘要-这项研究的目的是评估阿塞拜疆库尔河泛滥平原的冲积草甸土壤的形态特征，诊断定性指标，并增强其分类。为此，在代表性的测试区域放置了多个土坑，并在野外活动中收集了多个土壤样本（2014-2015年）。根据野外和实验室测试数据，编制了测试区域的详细土壤图，并将冲积草甸土壤的多样性归为亚阶（亚型）。冲积草甸分层（旗状）；冲积草甸暗而冲积草甸灌溉。结果发现，在洪泛区，局部土壤变化主要是由于冲积沉积物和地下水位，地下水以及洪水的矿化率和含盐量起着重要作用。地下水的矿化作用较弱（1.40–3.70 g / L），且碳氢化合物的浓度（HCO₃）在0.56至0.92 g / L之间变化。在冲积草甸原始土壤和冲积草甸层状土壤的剖面中未发现盐渍化迹象，而在冲积草甸深色土壤的深度为80-150 cm时发现浓度较弱（固含量= 0.40-0.54％）。与其他亚型不同，冲积草甸暗土的特征是生物量更高（顶部的绿色重量= 41.5 c / h，地下的绿色重量= 142.3 c / h），腐殖质物质的迁移性高，主要是腐殖质的第一部分（20.0–28.1％）和富里酸（14.6–22.3％）。C _h.a：C _f.a之比达到1.18–1.32。对于冲积草甸灌溉的土壤，腐殖酸的第二部分（9.3-10.2％）和腐殖酸的总含量为45.6％至50.3％。C _h.a比：C _f.a较大（1.37-1.50）。取决于冲积沉积物的岩石学，SiO ₂和R ₂ O ₃的含量分别在53.0-57.2和9.6-26.0％的范围内变化。对于冲积草甸暗土，碱水解中硅酸铝的分解是典型的（8.7-9.0）。SiO ₂和R ₂ O ₃的含量分别在47.8和50.6％之间以及19.7和21.6％之间变化。在表层土壤中，与冲洗掉的钙有关的灌溉土壤和CaO的含量（12.2-13.1％）在较深的层层中增加。