森林工程2024，Vol.40Issue(4)：1-10,10.DOI:10.7525/j.issn.1006-8023.2024.04.001
不同生境梭梭冠幅预测模型研究
Study on Crown Prediction Model of Haloxylon ammodendron in Different Habitats
摘要
Abstract
The canopy width is a necessary variable for the growth of desert vegetation.Predicting the crown width of desert plant in different habitats can provide reference for the scientific management of desert vegetation.Taking the species of Haloxylon ammo-dendron in the Gurbantunggut Desert as the research object,select 6 commonly(M1,M2,M3,M4,M5,M6)used regression mod-els,using tree height and ground diameter as survey factors,establish a canopy model of H.ammodendron in different habitats of highlands,gentle slopes,and flat lands.Perform regression analysis on the model using Origin and Anaconda software,select the op-timal model based on four fitting accuracy standards(R2,RMSE,MAE,and MAPE).The model fitting results indicate that:in the tree height-shrub crown width and shrub ground diameter models,the R2 values of the six regression models are all greater than 0.5,the model fitting effect is good.M5(cubic polynomial model)is the optimal model for tree height crown width and ground diameter crown width in three different habitats.All six models have statistical significance(Sig.<0.001),which has important reference value for predicting the crown size of H.ammodendron in the Gurbantunggut Desert,and provides a certain scientific basis for main-taining the ecology and vegetation restoration of the region.关键词
梭梭/树高/地径/冠幅/预测模型Key words
Haloxylon ammodendron/shrub height/shrub ground diameter/shrub crown width/regression models分类
农业科技引用本文复制引用
董玲萍,胡晓静,杨文乐..不同生境梭梭冠幅预测模型研究[J].森林工程,2024,40(4):1-10,10.基金项目
新疆农业大学高层次人才科研培育计划项目(2521GCCRC) （2521GCCRC）
国家自然科学基金(31660196). （31660196）
