干旱区研究2024，Vol.41Issue(5)：788-796,9.DOI:10.13866/j.azr.2024.05.07
黄土高原高速公路边坡草本群落植被特征及其与土壤的关系
Vegetation characteristics of herb communities on highway slopes of the Loess Plateau and their relationship with soil
摘要
Abstract
This study examined the vegetation characteristics and species diversity of mixed herb communities in different years on the slope of expressway in the Loess Plateau,and explored the relationship between herb com-munity characteristics,species diversity,and soil physical and chemical properties.The characteristics of herb communities,α species diversity,and their correlation with soil physical and chemical properties were studied us-ing the Mantel test after 15 a,12 a,8 a,4 a,and 2 a of restoration of herb communities on the highway slope of the Loess Plateau by space instead of time.In total,13 species of 13 genera in 8 families were investigated in 15 a of slope restoration,10 species of 10 genera in 7 families were investigated in 12 a of restoration,5 species of 5 genera in 3 families were investigated in 8 years of restoration,5 species of 5 genera in 3 families were investigat-ed in 4 a of restoration,and 6 species of 6 genera in 4 families were investigated in 2 a of restoration.Patric spe-cies richness recovered in the order 15 a>12 a>8 a>2 a>4 a,the Shannon-Wiener and Simpson indices recovered in the order 15 a>12 a>2 a>8 a>4 a,and the Pielou evenness index recovered in the order 15 a>2 a>8 a>12 a>4 a.Patric species richness was significantly positively correlated with total porosity and capillary porosity,organic matter,total nitrogen,and total phosphorus(P<0.05),and the Shannon-Wiener index was significantly positively correlated with organic matter and total phosphorus(P<0.05).After spraying mixed grass species in different years on the slope,the herb communities mostly contained perennials,but there were differences in species com-position and quantity of the community.The species richness,Shannon-Wiener index,and Simpson index of pat-ric species showed an upward trend as the number of restoration years increased.Soil total porosity,capillary po-rosity,organic matter,total nitrogen,and total phosphorus were the key environmental factors affecting patric spe-cies richness and the Shannon-Wiener index.关键词
黄土高原高速公路边坡/草本群落/植被特征/土壤Key words
Loess Plateau highway slope/prata/vegetation characteristics/soil引用本文复制引用
毛光锐,赵锦梅,朱恭,崔海明,刘万智..黄土高原高速公路边坡草本群落植被特征及其与土壤的关系[J].干旱区研究,2024,41(5):788-796,9.基金项目
甘肃省教育厅产业支撑计划项目(2023CYZC-45) （2023CYZC-45）
兰州市南北两山环境绿化工程指挥部项目(LNLJ2022(01)) （LNLJ2022(01）
