Influence of the root–soil complex on soil infiltration stages and their temporal changes in Cunninghamia lanceolata plantations

作者：Qing-Biao Rong, Meng Yang, Yingying Deng, Mingquan Zhao, Yuliang Liao, Qing-Fang Tan, Tiansen Pan, Gairen Yang, Xinxiao Yu, Yuhan Huang · 发表于：Geoderma · 年份：2025 · DOI：10.1016/j.geoderma.2025.117606 · 被引用次数：3 · 研究领域：Soil Carbon and Nitrogen Dynamics、Plant Water Relations and Carbon Dynamics、Tree Root and Stability Studies

• High fine root density inhibits soil infiltration before the steady infiltration stage. • Soil organic matter promoted infiltration in the slow stage. • Plugging effect of fine root was weaken in the 15-years-old plantation. As the intensive monoculture plantations continue to expend, their water demand of these plantations is concurrently rising. Investigating the soil infiltration processes in plantations is essential for developing informed water resource management and appropriate ecological management practices. Field experiments were carried out to examine variations within soil infiltration among different-aged Cunninghamia lanceolata plantations (5-, 8-, 11-, and 15-year-old) using an improved surface double-ring infiltration infiltrometer. Results showed that soil infiltration rates improved as the forest matures. During the rapid infiltration phases, including initial infiltration rate , early-stage infiltration rate and mid-stage infiltration rate , the rates varied between 3374 to 10196 mm·h −1 . In the slow infiltration phases, including late-stage infiltration rate, steady infiltration rate , the rates ranged from 1022 to 3195 mm·h −1 . Soil structural indicators (clay and silt contents) were the primary physical factors responsible for differences in entire infiltration process across different plantation ages: increased clay content and decreased silt content enhanced soil infiltration. Furthermore, the effects of biochemical factors — soil organic matter an...