生态学杂志2025，Vol.44Issue(8)：2515-2521,7.DOI:10.13292/j.1000-4890.202508.031
辽西山地不同水土保持措施对坡面土壤养分流失的影响
Effects of different soil and water conservation measures on soil nutrient loss on slope in mountainous re-gion of western Liaoning
摘要
Abstract
Soil and water conservation measures are essential for preventing soil nutrient loss.However,the mecha-nisms through which these measures affect soil nutrient loss on slopes in low hilly regions under natural rainfall con-ditions remain unclear.We examined six measures of soil and water conservation(cross-slope ridge cropping,slope ridge cropping,ridge plant belt,slope terrace,fruit tree terrace,and afforestation)in the Erdaoling small water-shed of western Liaoning Province,with fallow bare land as the control.We analyzed the characteristics of soil nu-trient loss and the affecting factors under these six soil and water conservation measures.The results showed that:(1)All the six measures of soil and water conservation effectively inhibited nutrient loss,though with varying de-grees.Afforestation was the most effective measure for controlling soil nutrient loss,with loss rates of soil organic carbon(SOC),total nitrogen(TN),total phosphorus(TP),and total potassium(TK)being 2.76％,9.47％,8.26％,and 4.84％,respectively.(2)Water-stable aggregates and runoff coefficient were key factors affecting soil nutrient loss.The more stable the water-stable aggregates,the smaller the runoff coefficient,and the lower the loss rates of SOC,TN,TP and TK.Soil pH and roughness were significantly positively correlated with SOC loss(P＜0.05).The loss rates of TP and TK were correlated with their baseline values and water content.The higher base-line values increased the loss rates of TP and TK,while water content had an opposite effect.Soil bulk density had a significant negative correlation with TK loss(P＜0.05).Overall,soil nutrient loss on slopes in the low hilly re-gions of western Liaoning was affected by a variety of factors.Afforestation was the optimal management strategy for reducing nutrient loss and should be prioritized in the ecological restoration of sloping cultivated lands in small wa-tersheds in this region.关键词
自然降雨/水土保持措施/土壤养分流失/影响因子Key words
natural rainfall/soil and water conservation measure/soil nutrient loss/influencing factor引用本文复制引用
陶佳,张帆,周凤艳,白文强,王云泽,韩艳刚,雷泽勇..辽西山地不同水土保持措施对坡面土壤养分流失的影响[J].生态学杂志,2025,44(8):2515-2521,7.基金项目
辽宁省教育厅基本科研项目面上项目(JYTMS20230808)、辽宁省教育厅大学生创新创业项目(S202310147038)资助. （JYTMS20230808）
