In arid coal mining areas, plants face significant soil moisture deficiency and inadequate water use strategies, hindering the ecological recovery process in the region. Through indoor soil column and growth chamber experiments, we investigated the effects of two homogeneous (S, a profile with entirely sand from 0 to 100 cm; L, a profile with entirely loess from 0 to 100 cm) and three layered soil profiles (SLS1, loess from 20 to 40 cm, with the rest being sand; SLS2, loess from 40 to 60 cm, with the rest being sand; SLS3, loess from 60 to 80 cm, with the rest being sand) on plant growth and root development. Additionally, we compared the impact of inoculating arbuscular mycorrhizal fungi (AMF, ) in homogeneous soil (S) and layered soil profile (SLS1) on soil moisture at different depths, plant root distribution, and water use strategies. The research results indicate that the layered soil profile (SLS1) exhibits favorable infiltration and evaporation characteristics, leading to a significant increase in plant biomass. Furthermore, both the layered soil profile (SLS1) and the inoculation of AMF can reduce the moisture absorption proportion of alfalfa in the shallow soil (0–20 cm) (>10%), increase the utilization proportion of water in the intermediate-deep soil, and enhance plant water use efficiency. Implementing the layered soil profile (SLS1) and AMF treatment proves effective in addressing soil moisture deficiency, improving plant water use strategies, and enhancing water use efficiency. The combined application of these two approaches is more suitable for the growth of plants in arid coal mining areas.

中文翻译：

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干旱煤矿区水分利用策略优化：层状土壤剖面与丛枝菌根真菌对植物生长和水分利用效率的协同效应

在干旱的煤矿区，植物面临严重的土壤水分不足和用水策略不足，阻碍了该地区的生态恢复进程。通过室内土柱和生长室实验，我们研究了两种均质土壤剖面（S，0至100 cm全沙土剖面；L，0至100 cm全黄土剖面）和三层土剖面（SLS1）的影响。 ，黄土20～40厘米，其余为沙；SLS2，黄土40～60厘米，其余为沙；SLS3，黄土60～80厘米，其余为沙）对植物生长和根系发育的影响。此外，我们还比较了在均质土壤（S）和分层土壤剖面（SLS1）中接种丛枝菌根真菌（AMF）对不同深度土壤湿度、植物根系分布和水分利用策略的影响。研究结果表明，分层土壤剖面（SLS1）表现出有利的渗透和蒸发特性，导致植物生物量显着增加。此外，分层土壤剖面（SLS1）和接种AMF均能降低苜蓿在浅层土壤（0~20 cm）的吸湿比例（>10%），提高中深层土壤的水分利用率。土壤，提高植物水分利用效率。事实证明，实施分层土壤剖面 (SLS1) 和 AMF 处理可以有效解决土壤水分不足、改善植物水分利用策略和提高水分利用效率。这两种方法的结合应用更适合干旱煤矿区植物的生长。