文献类型：期刊文献

中文题名：腾格里沙漠东缘花棒人工林植物组成和土壤粒径随林龄变化特征

英文题名：Variation characteristics of plant composition and soil particle size with stand age in Hedysarum scoparium plantations on eastern edge of Tengger Desert

作者：崔健[1,2,3] 马迎宾[1,2,3] 包晓英[4] 郝需婷[1,3] 黄雅茹[1,2] 辛智鸣[1,2,3] 卢嘉华[1,2] 牧仁[1,2]

第一作者：崔健

机构：[1]中国林业科学研究院沙漠林业实验中心,内蒙古磴口015200;[2]乌兰布和沙漠综合治理国家长期科研基地,内蒙古磴口015200;[3]内蒙古磴口荒漠生态系统定位观测研究站,内蒙古磴口015200;[4]内蒙古巴彦淖尔市临河区气象局,内蒙古巴彦淖尔015000

年份：2026

卷号：33

期号：3

起止页码：27-37

中文期刊名：水土保持研究

外文期刊名：Research of Soil and Water Conservation

收录：;北大核心:【北大核心2023】；

基金：中国林业科学研究院基本科研业务费专项“乌兰布和沙漠防沙治沙综合示范区(CAFBB2024ZA010)”;国家自然科学基金“人为干扰下梭梭灌丛水分利用与防风固沙效应的权衡机制研究”(32001374)。

语种：中文

中文关键词：不同林龄花棒;土壤粒径;分形维数;土壤粒度参数;植物多样性

外文关键词：Hedysarum scoparium of different stand ages;soil particle size;fractal dimension;soil particle size parameters;plant diversity

分类号：S793.3

摘要：[目的]明确不同林龄花棒人工林植物多样性和土壤粒径的关系,为该地区的植被建设与土壤管理提供科学支持。[方法]以腾格里沙漠东部种植的不同林龄花棒林为研究对象,采用野外采样与室内分析相结合的方法,研究不同林龄(2,4,6,8,10龄)花棒灌木林的植物多样性和土壤变化特征,解析土壤粒径与植物群落多样性的关系。[结果](1)不同林龄花棒林土壤颗粒以细砂和中砂为主,分别为30.62%~61.81%和23.83%~51.09%;随着林龄的增加,土壤颗粒分布越细,分散程度减小,粒度分布趋于近对称,土壤分形维数和黏粉砂含量相关性最高,R^(2)为0.837。(2)5种不同林龄样地共有7科18属22种植物。随着林龄的增加,植物多样性指数均呈现出明显的上升趋势。(3)不同林龄花棒林中黏粉砂含量和极细砂含量分别与分形维数存在显著的正相关关系(p<0.01),相关系数分别为0.36,0.83;峰度与Margalef丰富度指数、Shannon-Wiener多样性指数均呈现极显著正相关关系(p<0.01),相关系数分别为0.39,0.26。[结论]不同林龄花棒人工林能够提高植物多样性指数,改变土壤粒径含量,细砂含量与植物多样性呈现正相关关系。同时该地区生态恢复措施可为其他沙区沙漠化防治和干旱区植物恢复提供科学依据。
[Objective]This study aims to clarify the relationship between plant diversity and soil particle size in Hedysarum scoparium plantations of different stand ages,thereby providing scientific support for vegetation construction and soil management in the region.[Methods]Taking the Hedysarum scoparium plantations of different stand ages established in the eastern Tengger Desert as the research object,the plant diversity and soil change characteristics of Hedysarum scoparium shrub plantations of different stand ages(2,4,6,8,and 10 years old)were studied by using the methods of field sampling and laboratory analysis,and the relationship between soil particle size and plant community diversity was analyzed.[Results](1)The soil particles in the Hedysarum scoparium plantations of different stand ages were mainly composed of fine sand and medium sand,accounting for 30.62%~61.81%and 23.83%~51.09%,respectively.With increasing stand age,the distribution of soil particles became finer,the degree of dispersion decreased,and the particle size distribution tended to be nearly symmetrical.The soil fractal dimension showed the highest correlation with clay-silt content,with an R^(2) of 0.837.(2)There were a total of 18 genera,7 families,and 22 species of plants across 5 plots of different stand ages.With increasing stand age,the plant diversity indices showed a pronounced increasing trend.(3)In the Hedysarum scoparium plantations of different stand ages,clay-silt content and very fine sand content were both significantly positively correlated with the fractal dimension(p<0.01),with correlation coefficients of 0.36 and 0.83,respectively.The kurtosis showed a highly significant positive correlation with the Margalef richness index and Shannon-Wiener diversity index(p<0.01),with correlation coefficients of 0.39 and 0.26,respectively.[Conclusion]The Hedysarum scoparium plantations of different stand ages can increase plant diversity indices and alter soil particle size content,with a positive correlation observed between fine sand content and plant diversity.Furthermore,ecological restoration measures in the region can provide a scientific basis for desertification prevention and control in other sandy areas and plant restoration in arid areas.