量化调整次生林上层林木对其冠下红松光合及蒸腾特性的影响  

Effects of Quantitative Adjustment on Characteristics of Photosynthetic Transpiration for Pinus koraiensis Under Secondary Forest

作　　者：丛健 Cong Jian(Liaoning Provincial Forestry Development Service Center,Shenyang 110036,China)

机构地区：[1]辽宁省林业发展服务中心,辽宁沈阳110036

出　　处：《防护林科技》2020年第5期7-9,共3页Protection Forest Science and Technology

摘　　要：以次生林冠下栽植的红松为研究对象,量化调整上层林木后,在控制温度、光照和空气流动的前提下,对不同年龄针叶和不同层次针叶进行光合能力测定,结果表明:量化调整上层林木提高了红松树冠的光合能力和水分利用效率,降低了红松叶的蒸腾速率,当年生针叶的蒸腾速率和水分利用效率均高于多年生针叶。Taking Pinus koraiensis under the secondary canopy as the research objects,after quantitative adjustment for upper forest tree,under the premise of controlling the temperature,illumination&air flow,the photosynthetic capacity of the needles at different ages&levels was determined.Result shows that the quantitative adjustment improves photosynthetic capacity&water use efficiency of Pinus koraiensis canopy,reduces transpiration rate of Pinus koraiensis leaf;transpiration rate&water use efficiency of the born leaf were higher than perennial leaves.

关 键 词：次生林 红松 叶龄 光合 蒸腾 

分 类 号：S791.247[农业科学—林木遗传育种]