中国果树Issue(1)：37-44,8.DOI:10.16626/j.cnki.issn1000-8047.2026.01.007
核桃人工林下草本植物多样性特征研究
Study on the diversity characteristics of herbaceous plants under walnut plantations
摘要
Abstract
In order to understand the effects of artificial management on the diversity of understory herbaceous plants in walnut,19 walnut plantations at different altitudes in Fengqing County,Lincang City,Yunnan Province were investigated and their species diversity was analyzed.The results showed that a total of 75 species of herbaceous plants belonging to 38 families and 71 genera were recorded in the survey area,with Asteraceae accounting for 17.3％of the total species.Terrestrial herbs accounted for 98.67％of the understory herbaceous plants,including 52.00％of annual herbs and 38.67％of perennial herbs.Commelina communis,Ageratina adenophora and Drymaria cordata had the highest frequency in the survey quadrats,with 7,6 and 5 dominant species,respectively.The Shannon-Wiener diversity index of the understory herbaceous layer of different quadrats changed the most at 0.90-5.28,followed by the Margalef richness index of 1.28-4.35,the Simpson dominance index and the Pielou evenness index changed slightly,which were 0.53-0.91 and 0.48-0.92,respectively.The Margalef richness index,the Simpson dominance index and the Pielou evenness index were the highest at an altitude＞2,000 m,while the Shannon-Wiener diversity index was the highest at an altitude＜1,800 m,and there were significant differences between the Simpson dominance index and the Pielou evenness index at an altitude＜1,800 m and an altitude＞2,000 m above sea level,but there was no significant difference between the other indices.There was a positive correlation between altitude and Margalef richness index,Simpson dominance index and Pielou evenness index,and there was a significant positive correlation with Simpson dominance index and Pielou evenness index,and a significant negative correlation with Shannon-Wiener diversity index.Through this investigation,we will deepen the understanding of the vegetation diversity under walnut plantations,and provide relevant basic data for the rational management,biodiversity protection and ecological balance of walnut plantations.关键词
核桃人工林/草本植物/物种组成/植物多样性Key words
walnut plantation/herbaceous plant/species composition/plant diversity分类
农业科技引用本文复制引用
杜瑞雪,冯婧雯,宁德鲁,吴涛,潘莉,马婷..核桃人工林下草本植物多样性特征研究[J].中国果树,2026,(1):37-44,8.基金项目
云南省重大科技专项计划(202402AE090031) （202402AE090031）
云南省基础研究专项重大项目(202101BC070002). （202101BC070002）
