迭部县人工云杉林种群结构与动态特征  

Population Structures and Dynamic Characteristics of the Artificial Spruce Plantation in Diebu,Gansu Province

作　　者：李杜娟 Li Dujuan(Gansu Province Diebu Ecological Construction and Management Center,Diebu 747401,Gansu,China)

机构地区：[1]甘肃省迭部生态建设管护中心,甘肃迭部747401

出　　处：《绿色科技》2025年第4期72-75,共4页Journal of Green Science and Technology

摘　　要：为了明晰甘肃省迭部县生态建设管护中心人工云杉种群动态特征,揭示其生存规律,本文以迭部县自然保护区人工云杉为研究对象,通过样方调查法,对迭部人工云杉进行种群结构和动态特征分析。结果表明:①迭部人工云杉林随着龄级的增加株数逐渐减少,主要集中在Ⅰ~Ⅲ龄级,占总株数的86.9%;②消失率(k_(x))和死亡率(q_(x))随着龄级的增加先增加后减小然后又增加,最后减小,呈现出“双峰”模式,在Ⅳ龄级最大;③对未来2、4、6、8个龄级预测,种群表现出增长型的结构特征。To clarify the dynamic characteristics of artificial spruce populations and reveal their survival patterns within the Gansu Diebu Ecological Construction and Management Center,this study focuses on planted spruce populations in the Diebu Nature Reserve.Through quadrat survey methodology,an analysis of population structures and dynamic characteristics of these artificial spruce communities are conducted.The results show that:①the number of individuals in Diebu's artificial spruce plantation gradually decreases with ascending age classes,predominantly concentrated in age classes I toⅢ,which collectively accounted for 86.9%of the total population;②both disappearance rate(k x)and mortality rate(q x)exhibited a bimodal pattern with ascending age classes:initially increasing,then decreasing,followed by a secondary increase,and ultimately declining again,reaching their maximum values in age classⅣ;③the population exhibits a growth-oriented structural characteristic based on projections for future age classes 2,4,6,and 8.

关 键 词：人工云杉 种群结构 动态特征 迭部县 

分 类 号：S567[农业科学—中草药栽培]