北京林业大学学报2026，Vol.48Issue(8)：40-52,13.DOI:10.12171/j.1000-1522.20260045
黄土高原不同造林模式下土壤水分特征及影响因素
Soil moisture characteristics and influencing factors under different afforestation models on the Loess Plateau of northern China
摘要
Abstract
[Objective]The Loess Plateau is characterized by an arid climate,and soil water resources serve as a critical limiting factor for regional vegetation construction.The distribution characteristics and nfluencing factors of soil water under different afforestation models remain unclear,requiring systematic comparative research.This study aims to investigate the differences in soil moisture dynamics between pure and mixed forests on the Loess Plateau of northern China and to identify their key influencing factors,thereby providing a theoretical basis for optimizing afforestation models and promoting the sustainable use of soil water resources.[Method]A total of 1 453 sampling plots were compiled from 187 publications,including peer-reviewed journal articles and academic dissertations published between 1981 and 2024,focusing on soil moisture changes in pure and mixed forests on the Loess Plateau.The effects of major factors on soil moisture content were analyzed using the upper boundary line method and the Geodetector method.[Result](1)Soil moisture exhibited clear vertical differentiation between pure and mixed forests.In the 0-100 cm soil layer,pure forests had significantly higher soil moisture than mixed forests.No significant differences were observed in the 100-200 cm layer,whereas mixed forests showed significantly higher soil moisture in the 200-500 cm layer.(2)Soil moisture was influenced by multiple factors.In both afforestation models,soil moisture first increased and then decreased with increasing mean annual temperature and altitude.With increasing mean annual precipitation,soil moisture in pure forests increased initially and then stabilized,whereas it continuously increased in mixed forests.With increasing stand age,soil moisture in pure forests decreased initially and then remained stable,whereas in mixed forests,it exhibited a decreasing-increasing trend.(3)Mean annual precipitation contributed the most to soil moisture variation in both pure and mixed forests(pure forests of 23.3%and mixed forests of 39.4%).The explanatory power of interactions between any two factors was greater than individual factors,with the interaction between mean annual precipitation and altitude showing the strongest effect(pure forests of 51.6%and mixed forests of 59.0%).[Conclusion]Soil moisture differs significantly between pure and mixed forests on the Loess Plateau.Pure forests exhibit higher water-holding capacity in the 0-100 cm soil layer,whereas mixed forests show stronger water retention in deeper layers(200-500 cm),with no evident differences in the 100-200 cm layer.Mean annual precipitation is the dominant controlling factor,and its interaction with altitude provides the highest explanatory power.These findings suggest that both precipitation and topographic conditions should be jointly considered in afforestation planning to optimize forest structure and enhance the sustainable use of soil water resources.关键词
黄土高原/造林模式/纯林/混交林/土壤含水量/影响因子Key words
the Loess Plateau/afforestation models/pure forest/mixed forests/soil moisture content/influencing factors分类
农业科技引用本文复制引用
董亚潇,王冬梅,陈瑜佳,徐锟,杨娜..黄土高原不同造林模式下土壤水分特征及影响因素[J].北京林业大学学报,2026,48(8):40-52,13.基金项目
国家重点研发计划(2022YFF1300404),矿区生态复绿技术调研及试验(KJ-2023-1-2-KZ-016). （2022YFF1300404）
