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<p>Soil salinization poses a major threat to global food security and ecosystem stability. Phytoremediation using salt-tolerant, economically important plants offers a sustainable strategy for restoring degraded soils. This study evaluated the remediation potential of licorice (<i>Glycyrrhiza uralensis</i> Fisch) and sour jujube (Ziziphus jujuba Mill. var. spinosa (Bunge) Hu ex H.F.Chou) in saline–alkaline soils of Inner Mongolia, China. Field experiments compared bare land with soils planted for one and two years. Two-year plantations significantly reduced soil pH (from 9.3 to 8.5–8.8) and electrical conductivity (from 128 to 67–74&#xa0;μS/cm). Soil organic matter increased from 2.8 to 3.2&#xa0;g/kg in barren soils to 5.0–5.4&#xa0;g/kg under jujube. Nitrate nitrogen increased to 3.1–3.7&#xa0;mg/kg under licorice and 3.2–3.6&#xa0;mg/kg under jujube. Soil urease levels raised from 119&#xa0;mg/g in control soils to 297 to 318&#xa0;mg/g, and invertase levels increased from 0.6&#xa0;mg/g in control soils to 4.9 to 5.1&#xa0;mg/g in jujube soils. Furthermore, the fungal community changed from a <i>Basidiomycota</i>-dominated soil in barren soils to an <i>Ascomycota</i>-rich soil in vegetated soils. Soils under two-year licorice and two-year jujube had the highest α-diversity, with over 197 OTUs and a Shannon index of 3.22. One-year licorice had 102 OTUs and a Shannon score of 2.06. In conclusion, cultivating licorice and jujube improves soil fertility and microbial diversity, providing a long-term solution for reclaiming saline-alkaline soils in Inner Mongolia, China.</p>

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Influence of salt-tolerant medicinal herbs on soil geochemistry, nutrient cycling, and microbial communities in saline–alkali ecosystems of inner Mongolia

  • 期刊论文

  • 发表日期：

    2025年11月20日

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  • Yuhang Wang,
  • Zhirong Sun

摘要

Soil salinization poses a major threat to global food security and ecosystem stability. Phytoremediation using salt-tolerant, economically important plants offers a sustainable strategy for restoring degraded soils. This study evaluated the remediation potential of licorice (Glycyrrhiza uralensis Fisch) and sour jujube (Ziziphus jujuba Mill. var. spinosa (Bunge) Hu ex H.F.Chou) in saline–alkaline soils of Inner Mongolia, China. Field experiments compared bare land with soils planted for one and two years. Two-year plantations significantly reduced soil pH (from 9.3 to 8.5–8.8) and electrical conductivity (from 128 to 67–74 μS/cm). Soil organic matter increased from 2.8 to 3.2 g/kg in barren soils to 5.0–5.4 g/kg under jujube. Nitrate nitrogen increased to 3.1–3.7 mg/kg under licorice and 3.2–3.6 mg/kg under jujube. Soil urease levels raised from 119 mg/g in control soils to 297 to 318 mg/g, and invertase levels increased from 0.6 mg/g in control soils to 4.9 to 5.1 mg/g in jujube soils. Furthermore, the fungal community changed from a Basidiomycota-dominated soil in barren soils to an Ascomycota-rich soil in vegetated soils. Soils under two-year licorice and two-year jujube had the highest α-diversity, with over 197 OTUs and a Shannon index of 3.22. One-year licorice had 102 OTUs and a Shannon score of 2.06. In conclusion, cultivating licorice and jujube improves soil fertility and microbial diversity, providing a long-term solution for reclaiming saline-alkaline soils in Inner Mongolia, China.