水土保持通报2025，Vol.45Issue(6)：41-49,9.DOI:10.13961/j.cnki.stbctb.2025.06.021
砒砂岩区4种人工林林下草本植物多样性与土壤理化性质
Herbaceous plant diversity and soil physicochemical properties under four plantation types in Pisha sandstone area
摘要
Abstract
[Objective]The effects of different plantation types on understory vegetation community structure,species diversity,and soil physicochemical properties in Pisha sandstone area were analyzed,in orderto select suitable tree species for constructing soil and water conservation forests and provide a scientific basis for vegetation restoration and species diversity conservation in Pisha sandstone area.[Methods]Four typical plantation types(Caragana korshinskii,Prunus sibirica,Hippophae rhamnoides and Pinus tabuliformis forest)in Baojiagou watershed of Nuanshui Township,Jungar Banner,Ordos City,Inner Mongolia Autonomous Region,were selected as the research objects,with natural grassland(CK)as the control.Through field surveys,sampling,and laboratory experiments,the relationships among understory herbaceous plant community composition,species diversity,and soil physicochemical properties the natural grassland and the four typical plantations were investigated.[Results]① The understory herbaceous vegetation in the study area comprised 23 species from 18 genera and 10 families.The C.korshinskii forest had the highest number of understory herbaceous species,with a total of 22.The understory herbaceous plants in the four plantations were mainly composed of species from the Asteraceae,Gramineae,and Fabaceae families.② The coverage,biomass,Margalef richness index,and Shannon-Wiener diversity index of the understory herbaceous layer under the C.korshinskii forest were significantly higher than those under other vegetation types(p<0.01).③ The soil moisture content,soil organic matter,and total nitrogen content under the C.korshinskii forest were significantly higher than those under other vegetation types(p<0.01).Soil organic matter and total nitrogen exhibited a surface aggregation effect.④ Soil organic matter and saturated hydraulic conductivity were the dominant factors affecting the species diversity of the understory herbaceous layer in the plantations,while topography was a secondary factor.[Conclusion]C.korshinskii is the preferred tree species for constructing soil and water conservation forests in the Pisha sandstone area of Jungar Banner.It plays a dual role in maintaining species diversity and improving soil quality.关键词
砒砂岩区/物种多样性/土壤理化性质/冗余分析Key words
Pisha sandstone area/species diversity/soil physicochemical properties/redundancy analysis分类
农业科技引用本文复制引用
Zhang Yujia,Yang Zhenqi,Li Long,Guo Jianying,Lü Guanglin..砒砂岩区4种人工林林下草本植物多样性与土壤理化性质[J].水土保持通报,2025,45(6):41-49,9.基金项目
国家自然科学基金项目"砒砂岩基岩岩性对植物水分利用及稳定维持的影响机制研究"(42307463) （42307463）
内蒙古自治区揭榜挂帅项目(2024JBGS0023) （2024JBGS0023）
内蒙古自治区"科技兴蒙"行动重点专项(2022EEDSKJXM003) （2022EEDSKJXM003）
国家重点研发计划项目(2023YFF1305104) （2023YFF1305104）
