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千烟洲针叶林的比叶面积及叶面积指数
引用本文:李轩然,刘琪璟,蔡哲,马泽清.千烟洲针叶林的比叶面积及叶面积指数[J].植物生态学报,2007,31(1):93-101.
作者姓名:李轩然  刘琪璟  蔡哲  马泽清
作者单位:1 中国科学院地理科学与资源研究所, 北京 100101; 2 赤峰学院环境与资源管理系, 内蒙古赤峰 024001; 3 中国科学院研究生院, 北京 100049; 4 南昌大学环境科学与工程学院, 南昌330029
基金项目:国家重点基础研究发展计划(973计划);中国科学院生态网络野外台站基金
摘    要: 根据实测数据计算了湿地松(Pinus elliotii)、马尾松(P. massoniana) 和杉木 (Cunninghamia lanceolata)不同年龄、不同类型叶片的生 物量和比叶面积,并结合样地调查数据和相对生长方程计算了中国科学院千烟洲试验站20年生湿地松林、马尾松林、杉木林和针叶混交林的叶 面积指数。根据拟合结果,选择如下方程计算3个树种的叶生物量:湿地松W=12.0741D2.1515、马尾松W=6.9727D2.1973和杉木W=5.2619D2.3027 。湿地松林的叶生物量(0.822 kg?m-2)最大,其次为针叶混交林(0.679 kg?m-2),马尾松林和杉木林相差不大(分别为林0.5 28和0.572 kg?m-2)。不同树种、不同年龄、不同类型叶片的比叶面积比较发现,新叶的比叶面积大于老叶,三针一束叶的比叶面积略大于两针一束叶, 马尾松的平均半比表面积(8.62 m2?kg-1)大于湿地松(6.04 m2?kg-1) 和杉木(7.91 m2?kg-1)。胸径与单木叶片半表面积之间的经验方程 为:湿地松 LA=0.073D2.1515、马尾松LA=0.060D2.1973和杉木LA=0.042D2.3027。据此计算湿地松林的叶面积指数为5.03,马尾松林和杉木 林为4.31,针叶混交林为4.77,该结果比利用CI_110植被冠层数字图像仪测得的结果偏大。

关 键 词:湿地松  马尾松  杉木  比叶面积  叶面积指数  生物量
修稿时间:2006-02-172006-06-27

SPECIFIC LEAF AREA AND LEAF AREA INDEX OF CONIFER PLANTATIONS IN QIANYANZHOU STATION OF SUBTROPICAL CHINA
LI Xuan-Ran,LIU Qi-Jing,CAI Zhe,MA Ze-Qing.SPECIFIC LEAF AREA AND LEAF AREA INDEX OF CONIFER PLANTATIONS IN QIANYANZHOU STATION OF SUBTROPICAL CHINA[J].Acta Phytoecologica Sinica,2007,31(1):93-101.
Authors:LI Xuan-Ran  LIU Qi-Jing  CAI Zhe  MA Ze-Qing
Affiliation:1 Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China; 2 Department of Environment and Resources Management, College of Chifeng, Chifeng 024001, China; 3 Graduate University of Chinese Academy of Sciences, Beijing 100049, China; 4 College of Environmental Science and Engineering, Nanchang University, Nanchang 330029, China
Abstract:Aims Our objective was to determine foliage biomass and leaf area index (LAI) of four types of conifer plantations in Qianyanzhou Experimental Station in subtropical China. Methods We developed allometric equations between foliage biomass and stem diameter at breast height (DBH) and obtained specific leaf area (SLA) from data on leaf length, width and weight for different ages and types of leaves from three dominant species: slash pine (Pinus elliotii), masson pine (P. massoniana ) and Chinese fir (Cunninghamia lanceolata). Important findings Allometric equations for foliage biomass of slash pine, mass on pine and Chinese fir were W=12.0741D2.1515, W=6.9727D 2.1973 andW=5.2619D2.3027, respectively. Foliage biomass of s lash pine plantation (0.822 kg?m-2) was the highest among all stands, followed by mixed coniferous plantation (kg?m-2), Chinese fir plantation (0.572 kg?m-2) and masson pine plantation (0.528 kg?m-2). For each species, SLA of new leaves was larger than old ones, and that of three needle leaves was larger than two needle ones. Mean specific hemisurface area of masson pine (8.62 m2?kg-1) and slash pine (6.04 m2?kg-1). Regression equations between stem DBH (D) and mean hemisurface area (LA) for slash pine, masson pine and Chinese fir wereLA=0.073D2.1515, LA=0.060D2.1973and LA=0.042D2.3027, respectively. LAI was 5.03 for slash pine plantation, 4.31 for both masson pine plantation and Chinese fir plantation, and 4.77 for mixed coniferous plantation, all larger than that measured with CI-110 plant canopy digital imager.
Keywords:Pinus elliotii  P  massoniana  Cunninghamia lanceolata  specific leaf area (SLA)  leaf area index (LAI)  biomass
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