草业科学2024，Vol.41Issue(7)：1583-1594,12.DOI:10.11829/j.issn.1001-0629.2023-0208
准噶尔无叶豆对邻近草本植物群落多样性的影响及其与土壤因子的关系
Impact of Eremosparton songoricum on the diversity of adjacent herbaceous plant communities and its relationship with soil factors
摘要
Abstract
This study aimed to clarify the impact of desert leguminous plants on the species diversity of adjacent herb communities and their relationship with soil factors.The dominant leguminous plant Eremosparton songoricum in the Gurbantünggüt Desert and its adjacent herbaceous plant communities were taken as the research object.The characteristics of community and species diversity were analyzed using a field survey,and six diversity indices from the community co existing with herbaceous plants(LH)and herbaceous plants only(NH)were compared in detail.Further,redundancy analysis(RDA)was used to explore the relationship between species diversity and soil factors.The results showed that:1)In the NH community,there are a total of eight families,11 genera,and 11 species of plants,with Compositae having the most plant species.In the LH community,there are a total of four families,six genera,and six species of plants,among which the Chenopodiaceae family has the most plant species.2)The diversity index H,D,R of the NH community was significantly higher than that of LH community,and the dominance index C showed the opposite characteristics(P＜0.05).This indicated that the species richness of the NH community was relatively high.However,the species distribution was relatively poor,and the species dominance in the LH community was more prominent.3)In the vertical direction,soil organic carbon(SOC),soil organic matter(SOM),and the total nitrogen(TN)of different communities gradually decreased with the increase in soil depth,showing prominent"surface aggregation"characteristics.In the same soil layer,the LH community was significantly higher than in the NH community(P＜0.05).4)Redundancy analysis showed that the main soil factors that significantly affected species diversity of NH and LH communities were soil nitrate nitrogen(NO3-N)and total phosphorus(TP),respectively.In conclusion,E.songoricum have a certain impact on the species diversity and environmental factors of adjacent herb communities.The herb species richness in the community with E.songoricum is low,but the community has more suitable soil structure,higher fertility,and community dominance.关键词
古尔班通古特沙漠/准噶尔无叶豆/植物群落/物种多样性/草本植物/土壤/冗余分析Key words
Gurbantünggüt Desert/Eremosparton songoricum/plant community/species diversity/herbaceous plant/soil/redundancy analysis引用本文复制引用
那尔格孜·阿力甫,宋泊沂,庄伟伟..准噶尔无叶豆对邻近草本植物群落多样性的影响及其与土壤因子的关系[J].草业科学,2024,41(7):1583-1594,12.基金项目
新疆维吾尔自治区重点实验室开放课题项目(2021D04003) （2021D04003）
