Scholarlink

Background and aims <p>Soil infiltration influences the amount of precipitation entering the soil, which is particularly important in water-limited regions. Investigating the impact of root decay on soil porosity and infiltration rates is essential.</p> Method <p>Natural grassland underwent a five-year film mulching treatment to suppress plant root growth, named grassland under film mulching (GFM). Simultaneously, natural recovery grassland (NRG) and farmland (FL) were selected for conducting in-situ infiltration experiments.</p> Results <p>The diameter of roots significantly influences the formation of soil macropores (<i>p</i> &lt; 0.05). In the NRG soil layer less than 20 cm deep, the effective macroporosity with ø &gt; 3 mm is significantly higher compared to other sites (<i>p</i> &lt; 0.05), which leads to enhanced infiltration capability. Upon reaching a soil depth of 20 cm, the stable infiltration rate of FL was 2.00 mm/min, showing no significant change with further increases in soil depth. The stable infiltration rate of GFM is measured at 6.95 mm/min, which is 5.7 times higher than that of NRG. The effective macroporosity of GFM (ø &gt; 3 mm) increased by 20.6 times, with macropore connectivity reaching 20.79%, meanwhile that the effective macroporosity of NRG (ø &gt; 3 mm) decreased by 93.67%.</p> Conclusion <p>Although live roots contribute to the formation of macropores and infiltration capacity, the long and continuous biogenic macropores formed after root decay have a more pronounced effect on enhancing soil water infiltration capacity. This research endeavors to serve as a reference material for exploring the impact of grassland vegetation restoration on macropores and groundwater circulation.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

The impact of root systems on soil macropore abundance and soil infiltration capacity

  • 期刊论文

  • 发表日期：

    2025年2月5日

查看全文
  • Yuanyuan Qu,
  • Qinxuan Wu,
  • Farhat Ullah Khan,
  • Junfeng Wang,
  • Xiuzi Ren,
  • Xiaohong Chai,
  • Xuexuan Xu,
  • Feng Du

摘要

Background and aims

Soil infiltration influences the amount of precipitation entering the soil, which is particularly important in water-limited regions. Investigating the impact of root decay on soil porosity and infiltration rates is essential.

Method

Natural grassland underwent a five-year film mulching treatment to suppress plant root growth, named grassland under film mulching (GFM). Simultaneously, natural recovery grassland (NRG) and farmland (FL) were selected for conducting in-situ infiltration experiments.

Results

The diameter of roots significantly influences the formation of soil macropores (p < 0.05). In the NRG soil layer less than 20 cm deep, the effective macroporosity with ø > 3 mm is significantly higher compared to other sites (p < 0.05), which leads to enhanced infiltration capability. Upon reaching a soil depth of 20 cm, the stable infiltration rate of FL was 2.00 mm/min, showing no significant change with further increases in soil depth. The stable infiltration rate of GFM is measured at 6.95 mm/min, which is 5.7 times higher than that of NRG. The effective macroporosity of GFM (ø > 3 mm) increased by 20.6 times, with macropore connectivity reaching 20.79%, meanwhile that the effective macroporosity of NRG (ø > 3 mm) decreased by 93.67%.

Conclusion

Although live roots contribute to the formation of macropores and infiltration capacity, the long and continuous biogenic macropores formed after root decay have a more pronounced effect on enhancing soil water infiltration capacity. This research endeavors to serve as a reference material for exploring the impact of grassland vegetation restoration on macropores and groundwater circulation.