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林业资源管理 ›› 2019›› Issue (2): 132-136.doi: 10.13466/j.cnki.lyzygl.2019.02.019

• 研究简报 • 上一篇    下一篇

北京山区典型林分生长季叶面积指数动态变化

蒋丽伟1(), 张家琦1, 赵一臣1, 赵永雷2   

  1. 1.国家林业和草原局调查规划设计院,北京100714
    2.北京市房山区林果科技服务中心,北京 房山 102400
  • 收稿日期:2019-02-14 修回日期:2019-03-14 出版日期:2019-04-28 发布日期:2020-09-22
  • 作者简介:蒋丽伟(1979-),女,山东梁山人,高工,主要从事林业规划设计及生物多样性保护等方面的研究工作。Email: 27177229@qq.com
  • 基金资助:
    国家自然科学基金项目(41671080)

Dynamic Change of Leaf Area Index in the Growing Season of Typical Forests in Beijing Mountainous Area

JIANG Liwei1(), ZHANG Jiaqi1, ZHAO Yichen1, ZHAO Yonglei2   

  1. 1. Academy of Forest and Grassland Inventory and Planning,National Forestry and Grassland Administration,Beijing 100714,China
    2. Lin Guo Science and Technology Service Center,Fangshan District,Beijing 102400,China
  • Received:2019-02-14 Revised:2019-03-14 Online:2019-04-28 Published:2020-09-22

摘要:

叶面积指数为植物冠层表面的物质循环与能量循环提供了结构化的定量信息,是估算植被冠层功能的重要参数,也是生态系统中最重要的结构参数之一。以北京西山实验林场作为研究区域,以研究区域内5种典型林分作为研究对象,对各林分生长季内的叶面积指数进行测量,结果表明:1)不同植物类型叶面积指数表现为乔木林>草本层>灌木林;4种乔木林分类型生长季平均叶面积指数大小排序为栓皮栎林>刺槐林>油松林>侧柏林。2)在整个生长季,4种乔木林分的叶面积指数表现出了一致的变化趋势,均表现为“增大—平稳—减小”的趋势;3)灌木林叶面积指数的变异系数均高于乔木林与草本层,就整个生长季,5种林分的变异系数为灌木林(荆条)>栓皮栎林>刺槐林>侧柏林>油松林。

关键词: 北京山区, 典型林分, 叶面积指数, 生长季, 动态变化

Abstract:

Leaf area index (LAI) provides structured quantitative information for material and energy cycling on plant canopy surface,and is an important parameter for estimating vegetation canopy function,and also one of the most important structural parameters in ecosystem.In this study,Beijing Xishan experimental forest farm was taken as the research area,and five typical stands in the study area were taken as the research object.The results showed that:(1) the leaf area index of different forest types in growing season was trees>herbaceous plants>shrubs,the average leaf area index of four tree types in growing season was ranked as Quercusvariabilis > Robiniapseudoacacia > Pinustabuliformis > Platycladusorientalis;(2) In the whole growing season,the leaf area index of the four tree stands showed the same trend of change,showing the trend of "increasing-stabilizing-decreasing";(3)the variation coefficient of the leaf area index of shrubs was higher than that of trees and herbaceous plants,and the variation coefficient of the 5 stands was Vitex negundo var.heterophylla > Quercusvariabilis > Robiniapseudoacacia > Platycladusorientalis> Pinustabuliformis;the purpose of the research is to provide reference for forestry management departments and data support for forest management.

Key words: Beijing mountain area, typical forests, Leaf Area Index (LAI), growing season, dynamic change

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