生物资源2025，Vol.47Issue(6)：588-599,12.DOI:10.14188/j.ajsh.20250929001
腾格里沙漠东南缘人工和天然固沙灌木冠幅模型研究
Comparative modeling of crown width for natural and artificial sand-fixing shrubs on the southeastern fringe of the Tengger Desert
摘要
Abstract
Shrub height and crown width serve as critical morphological parameters essential for understanding eco-system structure and function.These metrics facilitate estimations of shrub biomass,density,diversity,and carbon emis-sions,thereby enabling assessments of ecosystem health.This study investigated the crown widths of dominant sand-fixing shrubs including Artemisia ordosica,Caragana korshinskii,Krascheninnikovia ceratoides,and Corethrodendron sco-parium in natural and artificial vegetation zones along the southeastern fringe of the Tengger Desert,constructing sixteen base models for crown width across distinct vegetation zones and shrub species.Comparative analysis of model fitting per-formance identified optimal crown width models for specific vegetation zones and shrubs.The results showed that optimal models varied significantly across vegetation zones and species.The Quadratic base model achieved the best fit in natural vegetation zones,while the Korf base model excelled in artificial zones.For the dominant shrub A.ordosica,the Scaled-Power and Hossfeld I base models were optimal in natural and artificial zones,respectively.C.korshinskii performed best under the Gauss model in natural zones and the Logistic model in artificial zones.K.ceratoides favored the Log-Logistic base model,and C.scoparium the Quadratic base model.These results provide a scientific basis for ecological modeling and windbreak-sand fixation efficacy evaluation in relevant regions.关键词
腾格里沙漠/人工植被区/天然植被区/固沙灌木/冠幅模型Key words
Tengger Desert/artificial vegetation zone/natural vegetation zone/sand-fixing shrubs/crown width model分类
农业科技引用本文复制引用
丘月,张定海,虞洁,李佳乐,杨甜..腾格里沙漠东南缘人工和天然固沙灌木冠幅模型研究[J].生物资源,2025,47(6):588-599,12.基金项目
内蒙古自治区防沙治沙科技创新重大示范工程"揭榜挂帅"项目(2024JBGS0003) （2024JBGS0003）
国家自然科学基金地区科学基金项目(42361016) （42361016）
甘肃省自然科学基金(23JRRM734) （23JRRM734）
陇东学院博士科研启动基金(XYBYZK2305) （XYBYZK2305）
