摘要
Abstract
In the implementation of ecological restoration in arid and desert areas,the primary task is to select suitable plant species that can adapt to extreme environments.The selection and application of suitable tree species are the key to the ecological restoration in the alluvial sector of Helan Mountain.To address the problem of low survival rate of afforestation caused by improper plant selection in the ecological restoration of the alluvial sector of Helan Mountain,using five shrubs,namely Amygdalus mongolica(Maxim.)Ricker,Tamarix gallica,Ziziphus jujube var.Spinosa,Zygophyllum xanthoxylon,and Periploca sepium Bunge,as experimental materials,experiments were conducted in Jingziquan in Yongning County and Dashuigou in Pingluo County.Through observation and statistics of survival rate and growth volume,suitable shrub tree species for afforestation in the alluvial sector of Helan Mountain were selected,with the aim of providing practical basis for the selection of tree seedlings for ecological restoration in the alluvial sector at eastern foot of Helan Mountain.The results showed:① The survival rate of 2-year-old container seedlings of the five shrubs in the current year,from high to low,was:Ziziphus jujube var.Spinosa,Tamarix gallica,Zygophyllum xanthoxylon,Periploca sepium Bunge,Amygdalus mongolica(Maxim.)Ricker;the growth volume of new shoots,from high to low,was:Tamarix gallica,Zygophyllum xanthoxylon,Periploca sepium Bunge,Ziziphus jujube var.Spinosa,Amygdalus mongolica(Maxim.)Ricker.② In 2024,the survival rate of 2-year-old container seedlings of Ziziphus jujube var.Spinosa,Zygophyllum xanthoxylon,Amygdalus mongolica(Maxim.)Ricker,and Periploca sepium Bunge in Dashuigou was higher than that in Jingziquan,while Tamarix gallica was the opposite.Among them,the survival rate of Ziziphus jujube var.Spinosa was the highest(90%),and the survival rates of Amygdalus mongolica(Maxim.)Ricker and Periploca sepium Bunge were the lowest(80.67%).Therefore,in the surrounding areas of Jingziquan in Yongning County and Dashuigou in Pingluo County on the eastern foot of Helan Mountain,it is advisable to adopt soil transplantation to plant 2-year-old container seedlings of Ziziphus jujube var.Spinosa,Tamarix gallica,etc.关键词
贺兰山洪积扇/生态修复/灌木/成活率/抗旱性Key words
Helan mountain alluvial sector/Ecological restoration/Shrub/Survival rate/Drought resistance分类
农业科技
