用微信扫码二维码

分享至好友和朋友圈

WE ARE COMMITTED TO REPORTING THE LATEST FORESTRY ACADEMIC ACHIEVEMENTS

蒋小林, 贾晨, 代玲莉, 辜云杰, 何承忠, 罗建勋. 川西高原大叶杨生长特性研究[J]. 四川林业科技, 2015, 36(3): 13-17. DOI: 10.16779/j.cnki.1003-5508.2015.03.004
引用本文: 蒋小林, 贾晨, 代玲莉, 辜云杰, 何承忠, 罗建勋. 川西高原大叶杨生长特性研究[J]. 四川林业科技, 2015, 36(3): 13-17. DOI: 10.16779/j.cnki.1003-5508.2015.03.004
JIANG Xiao-lin, JIA Chen, DAI Ling-li, GU Yun-jie, HE Cheng-zhong, LUO Jian-xun. Research on the Growth Characteristics of Populus lasiocarpa Oliv. in West Sichuan Plateau[J]. Journal of Sichuan Forestry Science and Technology, 2015, 36(3): 13-17. DOI: 10.16779/j.cnki.1003-5508.2015.03.004
Citation: JIANG Xiao-lin, JIA Chen, DAI Ling-li, GU Yun-jie, HE Cheng-zhong, LUO Jian-xun. Research on the Growth Characteristics of Populus lasiocarpa Oliv. in West Sichuan Plateau[J]. Journal of Sichuan Forestry Science and Technology, 2015, 36(3): 13-17. DOI: 10.16779/j.cnki.1003-5508.2015.03.004

川西高原大叶杨生长特性研究

Research on the Growth Characteristics of Populus lasiocarpa Oliv. in West Sichuan Plateau

  • 摘要: 采用树干解析法对川西高原泸定县岚安乡25 a生大叶杨人工林生长特性进行研究。结果表明:25 a生大叶杨的胸径、树高与材积总生长量分别为27.65 cm、20.5 m与0.56047 m3;大叶杨的胸径、树高与材积的连年生长量和平均生长量在随着年龄的增长而出现先增加再降低的趋势;胸径的连年生长量和平均生长量的峰值分别出现在造林后第6年和第9年,其值分别为1.65 cm和1.43 cm;树高的连年生长量和平均生长量的最大值同时出现在造林后第9年,其值分别为1.69 m和1.51 m;材积的连年生长量在造林后第21年出现最大值为0.03947 m3,平均生长量在造林后第25年时的值为0.02242 m3,是目前最大值;材积连年生长曲线与平均生长曲线相交于第25年左右,材积的数量成熟年龄为25年;大叶杨的材积生长率与胸高形数随着年龄生长而逐渐降低,树干干形在第12年左右基本稳定。

     

    Abstract: The research on forest growth characteristics was conducted on the 25-year-old Populus lasiocarpa Oliv. planted in Luding county in west Sichuan plateau by using stem analysis method. The results indicated that the DBH,tree height and tree volume growth of the 25-year-old Populus lasiocarpa Oliv. were 27.65 cm,20.5 m and 0.56047 m3, respectively. The current annual increment tendency of the DBH,tree height and tree volume increased at first and then decreased with the increase of the age. So did the mean annual increment. The current annual increment and mean annual increment of DBH reached maximum at the age of 6 and 9,and their values were 1.65 cm and 1.43 cm respectively. The current annual increment and mean annual increment of tree height almost reached maximum at around 9 years old at the same time,and their values were 1.69 m and 1.51 m respectively. The current annual increment of timber volume reached the maximum value of about 0.03947 m3 at the age of 21,while the mean annual increment reached the maximum value of about 0.02242 m3 at the age of 25. The current annual increment and the mean annual increment of the timber volume intersected at the age of 25,which meant that the Populus lasiocarpa Oliv. growth process had reached its quantitative maturity at the age of 25. The volume growth rate and the breast height form factor of Populus lasiocarpa Oliv. decreased with the increase of the age growth. The tree form was basically steady at the age of about 12.

     

/

返回文章
返回