不同气候带间成熟林植物叶性状间异速生长关系 随功能型的变异

doi:10.3724/SP.J.1258.2011.00687

摘要/Abstract

摘要：

为研究不同生物气候带内植物叶片大小与叶柄干重间的异速生长关系, 探讨不同植物功能型对叶内异速生长关系的效应, 在黑龙江呼中、吉林长白山、北京东灵山、浙江古田山、湖北神农架和四川都江堰6个地区, 选择典型地带性成熟林进行主要木本植物的叶片和叶柄性状的测定与统计分析。结果表明: 不同功能型和气候带植物叶片干重、面积、体积均与叶柄干重之间存在着显著的异速生长关系, 共同斜率分别为0.82、0.70和0.80, 均显著小于1.0。在相同叶柄干重下, 灌木较乔木支持更大的叶片体积, 但它们支持的叶片干重与叶片面积无显著差异; 常绿植物在给定叶柄干重下较落叶植物支持更高的叶片干重与体积, 但其支持的叶片面积小于落叶植物; 除神农架地区外, 在给定叶柄干重下, 亚热带的古田山、都江堰地区的植物较温带地区的植物支持更大的叶片干重、面积与体积, 而亚热带神农架地区的植物叶柄支持的叶片大小(面积、体积、干重)与温带地区相近。结果表明, 叶柄限制了叶片的不断增大(包括面积、体积和干重), 叶片和叶柄之间的异速生长关系受功能型、气候带及生境条件的影响。

关键词: 异速生长, 功能型, 叶片, 叶性状, 叶柄, 地带性气候

Abstract:

Aims Our objectives are to determine allometric relationships between petiole mass and lamina mass, area, and volume in different bioclimatic zones and to detect the effect of plant functional types on the relationships.
Methods Typical and zonal mature forests were selected from boreal Huzhong, temperate Changbai Mountain, warm-temperate Dongling Mountain, subtropical Gutian Mountain, Shennongjia and Dujiangyan in China, and one 1 hm² plot was investigated at each site. Traits of lamina and petiole of the dominant woody species were measured in August 2009. The relationship between lamina and lamina support was analyzed by the Standardized Major Axis estimation (model type II regression) with software (S)MATR Version 2.0.
Important findings Statistically significant allometric scaling relationships were found between petiole mass and lamina mass, area, and volume in all functional types and climate zones, with common slopes of 0.82, 0.70 and 0.80, respectively, all of which significantly departed from 1.0. Shrubs had greater lamina volume at a given petiole mass than trees, but the lamina mass and area they support were not significantly different. Evergreen species were observed to have greater lamina mass and lamina volume than deciduous ones, whereas deciduous species had a greater lamina area at a given petiole mass than evergreen ones. With the exception of Shennongjia, the species in subtropical sites were found to have greater lamina mass, lamina area, and lamina volume than temperate sites at a given petiole mass. However, the petiolar support efficiency in the subtropical climate of Shennongjia was close to sites in temperate climate. Our results indicate that the petiole constrains the maximization of lamina size (including mass, area and volume) and that the allometric relationship between lamina and lamina support varies with plant functional type, climate and habitat.

Key words: allometry, functional type, lamina, leaf traits, petiole, zonal climate

祝介东, 孟婷婷, 倪健, 苏宏新, 谢宗强, 张守仁, 郑元润, 肖春旺. 不同气候带间成熟林植物叶性状间异速生长关系随功能型的变异. 植物生态学报, 2011, 35(7): 687-698. DOI: 10.3724/SP.J.1258.2011.00687

ZHU Jie-Dong, MENG Ting-Ting, NI Jian, SU Hong-Xin, XIE Zong-Qiang, ZHANG Shou-Ren, ZHENG Yuan-Run, XIAO Chun-Wang. Within-leaf allometric relationships of mature forests in different bioclimatic zones vary with plant functional types. Chinese Journal of Plant Ecology, 2011, 35(7): 687-698. DOI: 10.3724/SP.J.1258.2011.00687

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https://www.plant-ecology.com/CN/Y2011/V35/I7/687

图/表 8

表1 中国6个地带性成熟林的自然条件

Table 1 Natural condition of six zonal mature forests in China

表2 各变量的等级变异组分分析(I型方差分析平方和)

Table 2 Hierarchical variance component analysis for each variable (ANOVA type I sums of squares)

组分 Component	叶片面积 Lamina area	叶片体积 Lamina volume	叶片干重 Lamina mass	叶柄干重 Petiole mass
物种 Species (%)	93.57	90.20	88.60	88.51
个体 Individual (%)	6.43	9.80	11.40	11.49

表3 不同功能型与地点内叶片-叶片支持关系的标准主轴(SMA)回归参数

Table 3 Standardized Major Axis (SMA) regression parameters of lamina-lamina support relationships for each functional type and site

图1 叶片面积及叶片体积同叶片干重在不同生活型(A、D)、叶候(B、E)和气候带(C、F)内的生长关系。

Fig. 1 Growth relationships between lamina area, lamina volume and lamina mass vary with life form (A, D), leaf phenology (B, E) and climatic zone (C, F). CBM, Changbai Mountain; DLM, Dongling Mountain; DJY, Dujiangyan; GTM, Gutian Mountain; HZ, Huzhong; SNJ, Shennongjia.

表4 不同生活型叶片与叶片支持关系的斜率异质性检验以及斜率同质时截距的差异

Table 4 Tests for heterogeneity of slope, and shift in intercept for leaf lamina-lamina support relationships in different life forms when the slopes are homogeneity

Y	X	沿共同斜率的变异 Shift along the common slope		Y轴截距差异 Shift in elevation		斜率异质性 Heterogeneity of slopes
Y	X	乔木 Tree	灌木 Shrub	乔木 Tree	灌木 Shrub	斜率异质性 Heterogeneity of slopes
LA	LM	-	-	-	-	p < 0.05
LV	LM	-	-	-	-	p = 0.02
LM	PM	2.90	2.61	1.44	1.45	p = 0.88
LA	PM	4.04^a	3.76^b	2.88	2.83	p = 0.06
LV	PM	-	-	-	-	p = 0.04

表5 不同叶候间叶片与叶片支持关系的斜率异质性以及斜率同质时截距的差异

Table 5 Tests for heterogeneity of slope, and shift in intercept for leaf lamina-lamina support relationships in different leaf phenology when the slopes are homogeneity

Y	X	沿共同斜率的变异 Shift along the common slope		Y轴截距差异 Shift in elevation		斜率异质性 Heterogeneity of slopes
Y	X	落叶 Deciduous	常绿 Evergreen	落叶 Deciduous	常绿 Evergreen	斜率异质性 Heterogeneity of slopes
LA	LM	-	-	-	-	p = 0.04
LV	LM	5.48^b	5.77^a	1.67	1.71	p = 0.15
LM	PM	2.72	2.84	1.41^b	1.54^a	p = 0.99
LA	PM	-	-	-	-	p < 0.05
LV	PM	4.18	4.34	2.97^b	3.14^a	p = 0.15

表6 不同地点间叶片与叶片支持关系的斜率异质性以及斜率同质时截距的差异

Table 6 Tests for heterogeneity of slope, and shift in intercept for leaf lamina-lamina support relationships in different sites when the slopes are homogeneity

图2 叶片大小(面积、体积、干重)与叶柄干重在不同生活型(A、D、G)、叶候(B、E、H)和气候带(C、F、I)内的异速生长关系。

Fig. 2 Allometric relationships between lamina size (area, volume and mass) and petiole mass vary with life form (A, D and G), leaf phenology (B, E and H), and climatic zone (C, F and I). CBM, Changbai Mountain; DLM, Dongling Mountain; DJY, Dujiang- yan; GTM, Gutian Mountain; HZ, Huzhong; SNJ, Shennongjia.

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