摘要
研究太行山坡地不同植物篱及篱带前、篱带内、篱带后土壤抗蚀性的变化特征,为该区水土保持和退化坡地生态恢复工作提供科学支撑。以枸杞(Lycium chinense)、欧李(Cerasus humilis)、薄荷(Mentha canadensis)、连翘(Forsythia suspense)4种植物篱及空白裸地为研究对象,选择9个土壤抗蚀性指标,运用主成分分析方法进行土壤抗蚀性评价。结果表明:1)植物篱样地的土壤容重、可蚀性K值普遍低于裸地,孔隙度、持水量、养分含量、土壤颗粒分形维数及水稳性指数普遍高于裸地,且各指标在植物篱带前、带内、带后具有显著差异性。2)主成分分析结果表明:土壤容重、毛管孔隙度、饱和持水量、有机质是评价该研究区土壤抗蚀性的最佳指标,植物篱样地的土壤抗蚀性优于裸地,整体表现为枸杞>连翘>欧李>薄荷>裸地,且植物篱带内土壤抗蚀性强于带前、带后。3)土壤抗蚀指数与毛管孔隙度、全氮、有机质、土壤颗粒分形维数存在显著正相关关系(p<0.05),与可蚀性K值存在显著负相关关系(p<0.05)。综上,植物篱种植可一定程度上提高土壤抗蚀性,且4种植物篱中,枸杞的效果较好。建议该区域可优先选用枸杞作为生态修复物种,增强坡地水土保持能力和抗蚀性。
Study the variation characteristics in soil anti-erodibility of different hedgerows and before,within and after the hedgerow belt of the Taihang Mountain slope,provided scientific support for soil and water conservation and ecological restoration of degraded slopes in the area.Taking Lycium chinense plot(Lc),Cerasus humilis plot(Ch),Mentha canadensis plot(Mc),Forsythia suspense plot(Fs),and bare control plot(Ck)as the research objects,we selected nine indicators about soil anti-erodibility and used the principal component analysis method to conduct soil anti-erodibility evaluation.The result shows that:1)Soil bulk density and erodibility K value of the hedgerow plots were generally lower than those of the bare plot,and the porosity,saturated moisture,nutrient content,soil particle fractal dimension and water stability index were generally higher than those of the bare plot.There were significant differences among the indicators at different positions of hedgerow belts.2)The results of principal component analysis showed that soil bulk density,capillary porosity,saturated water holding capacity,and organic matter were the best indicators for evaluating soil anti-erodibility in the study area.The comprehensive soil anti-erodibility of hedgerows plots was better than that of the bare plot,and the overall performance was Lycium chinense plot>Forsythia suspense plot>Cerasus humilis plot>Mentha canadensis plot>bare plot,and the soil corrosion resistance within the hedgerow belt was stronger than before and after the belt.3)Soil anti-erodibility index had a significant positive correlation with capillary porosity,total nitrogen,organic matter,and fractal dimension(p<0.05),and a significant negative correlation with erodibility K value(p<0.05).In summary,hedgerows can improve soil erosion resistance to a certain extent,and among the four hedgerows,Lycium chinense had a better effect.It is recommended to prioritize the use of Lycium chinense as an ecological restoration species in this area to enhance the soil and water c
作者
郭文芳
高飞
陈艳梅
GUO Wen-fang;GAO Fei;CHEN Yan-mei(Laboratory of Environmental Evolution and Ecological Construction of Hebei Province,Hebei Technology Innovation Center for Remote Sensing Identification of Environmental Change,College of Geographical Sciences,Hebei Normal University,Shijiazhuang 050024,China)
出处
《环境生态学》
2024年第5期82-92,共11页
Environmental Ecology
基金
国家重点研发计划项目(2021YFB3901104)资助。
关键词
植物篱
土壤抗蚀性
主成分分析
太行山
Hedgerow
soil anti-erodibility
principal component analysis
Taihang Mountains
