腾冲市秃杉中幼林生长分析  

Growth Analytical of Young and Middle-aged Forests of Taiwania cryptomerioides Hayata in Tengchong City

作　　者：范彩慧 龙德增 赵润华 Fan Caihui;Long Dezeng;Zhao Runhua(Tengchong Forestry and Grassland Technology Extension Station,Tengchong 679100,Yunnan,China;Tengchong Ecological Restoration Station,Tengchong 679100,Yunnan,China;Tengchong Forest Resources Management Station,Tengchong 679100,Yunnan,China)

机构地区：[1]腾冲市林业和草原技术推广站,云南腾冲679100 [2]腾冲市生态修复站,云南腾冲679100 [3]腾冲市森林资源管理站,云南腾冲679100

出　　处：《绿色科技》2024年第19期88-94,共7页Journal of Green Science and Technology

摘　　要：基于腾冲市2021年森林抚育项目秃杉地块的样地数据分析了腾冲市秃杉1~20年生各树龄的生长状况及不同立地条件对腾冲市秃杉中幼林胸径、树高生长的影响。结果表明:各树龄胸径、树高、材积的平均生长量差异极显著,在1~15年生树龄,各树龄秃杉胸径、树高平均生长量随树龄的增长呈逐渐增长趋势,树龄在16年生之后胸径、树高平均生长量减弱;材积平均生长量在各树龄随树龄的增长而增长;秃杉在中幼林时期,胸径、树高、材积间呈极显著正相关,即胸径越大、树高越高,材积就越大;不同立地条件对秃杉胸径、树高平均生长量的影响为:在1~10年生树龄,秃杉的生长对坡位的变化最为敏感,其次是海拔,坡向对秃杉胸径、树高平均生长量的影响有限。Based on the sample data of Tengchong City's 2021 Forest Conservation Project,the growth status of Tengchong City's Taiwaniaflousiana Gaussen in all age groups from 1a to 20a,and the effects of different ground conditions on the growth of diameter at breast height(Dbh)and height of trees in the middle-aged and juvenile forests of TaiwaniaflousianaGaussen in Tengchong City are analyzed.The results showed that the average growth of diameter at breast height(Dbh),tree height(TH)and volume of lumber(VL)varied significantly among the age groups,and the average growth of Dbh and TH in the age group 1~15 a showed a gradual increase with age,and then the average growth of Dbh and TH weakened after 16a;the average growth of volume of lumber(VL)in-creased with age;the positive correlation among Dbh,TH and VL was extremely significant in the young and middle forests.The positive correlation between diameter at breast height(DB),tree height and lumber volume in young and medium-sized forests was highly significant,i.e.The larger the diameter at breast height(DBH)and the higher the tree height,the larger the lumber volume;the effects of different site conditions on the average growth of DBH and tree height were as follows:in the age group of 1~10 a,the growth of Taiwaniaflousiana Gaussen was the most sensitive to the change of the slope position,followed by elevation,and the effect of the slope direc-tion on the average growth of DBH and tree height of Taiwaniaflousiana Gaussen was limited.

关 键 词：秃杉 空间分布 立地条件 平均生长量 腾冲市 

分 类 号：S722[农业科学—林木遗传育种]