文献类型：期刊文献

中文题名：不同栽植密度下欧美杨叶片耐荫性与生物累积量的关系

英文题名：The Relationship of Shade Tolerance of Poplar and Biomass Production under Different Plantation Density

作者：王宁宁[1,2] 黄娟[3] 丁昌俊[3] 张洪[4] 沈应柏[1,2] 苏晓华[3]

第一作者：王宁宁

机构：[1]北京林业大学生物科学与技术学院,北京100083;[2]北京林业大学林木育种国家工程实验室,北京100083;[3]中国林业科学研究院林业研究所,国家林业局林木培育重点实验室,北京100091;[4]云南省红河州泸西县中枢镇林业站,云南红河州652400

年份：2015

卷号：28

期号：5

起止页码：691-700

中文期刊名：林业科学研究

外文期刊名：Forest Research

收录：CSTPCD;;Scopus;北大核心:【北大核心2014】；CSCD:【CSCD2015_2016】；

基金：国家“十二·五”科技支撑计划课题“超高产优质杨树速生材新品种选育(2012BAD01B03)”

语种：中文

中文关键词：杨树;短轮伐期;栽植密度;光合作用;生物量;耐荫性

外文关键词：poplar; high density short-rotation plantation ; plantation density; photosynthesis ; biomass ; shade tol- erance

分类号：S792.11

摘要：为阐明不同栽植密度下欧美杨无性系树冠叶片耐荫性与生物累积量的关系,选择高密度(2 m×3 m)和低密度(2 m×5 m)栽植的不同亲本的5个欧美杨无性系为研究对象,测量了生物量、树冠结构、叶面积指数及光合参数。结果表明:(1)不同无性系对栽植密度有不同的反应;(2)具有较高生物量的欧美杨无性系树冠叶片在高、低栽植密度下均表现出较强的耐荫性特征;(3)树冠耐荫性在不同密度中表现出差异性,在低密度栽植中,树冠上层耐荫性与生物量和叶面积指数关系密切;在高密度栽植中,树冠上、下层叶片耐荫性与生物量和叶面积指数关系密切;(4)树冠耐荫性特征受亲本和环境的共同影响,由低密度到高密度,具有较高生物量的03-04-97、03-04-111、03-04-171树冠中下层叶片光补偿点和暗呼吸速率大幅度降低。该研究结果可为选择适合高密度栽植的欧美杨无性系提供数据和理论支持。
To clarify the relationship between the response of crown leaves to shade environment and biomass pro- duction, five genotypes of Populus x euramericana with different parents planted in two densities （2 m × 3 m, 2 m × 5 m） were chosen and the biomass production, crown depth, crown width, LAI and photosynthesis light response parameters were investigated. The results are as follows： （1） The response to weak light varied among genotypes. （2） The Genotypes 03-04-97,03-04-111 and 03434-171 showed a high shade tolerance ability and had the highest biomass production in high density plantation. （3） The shade tolerance of genotypes 03-04-97,03-04-111 and 03- 04-171 was different under different plantation density. Compared with the density 2 m × 5 m, the crown leaves of middle and lower layer showed higher ability of shade tolerance. （4） The interaction between shade tolerance and biomass varied under different plantation density, the shade tolerance of upper layer had significant affections on bi- omass under the density 2 m ×5 m, however, the shade tolerance of upper and lower layers played an important rolein biomass production under the density 2 m × 5 m. （5） The shade tolerance was affected by environment and heri- tability. The light compensation point （LCP） and respiration rate （Rd） of the genotypes with high biomass produc- tion was significant lower in 2 m × 3 m compared with 2 m × 5 m. These results could be used to select genotype for high density and short rotation plantation.