Page 144 - 《广西植物》2026年第1期
P. 144
1 4 0 广 西 植 物 46 卷
表 1 本研究测定的枝叶性状及其生态学意义
Table 1 Branch and leaf traits measured in this study and their ecological significance
性状 缩写 单位 生态学意义
Trait Abbreviation Unit Ecological significance
导管腔总面积占单位边材横截面积的比例ꎬ与水分运输有关
导管腔比例
Vs % Proportion of the total area of vessel lumina to the unit cross ̄sectional
Vessel lumen proportion
area of sapwood is related to water transport
导管壁总面积占单位边材横截面积的比例ꎬ与机械支持和抗性
导管壁比例 有关
Vwf %
Vessel wall proportion Proportion of the total area of vessel walls to the unit cross ̄sectional
area of sapwood is associated with mechanical support and resistance
单位视野内导管数量ꎬ与水分运输能力有关
导管密度
Vd No.mm  ̄2 Number of vessels per unit viewing area is related to water
Vessel density
transport capacity
轴向薄壁组织占单位边材横截面积的比例ꎬ与储存能力有关
轴向薄壁组织比例
Apf % Proportion of axial parenchyma to the unit cross ̄sectional area of
Axial parenchyma proportion
sapwood is associated with storage capacity
射线组织占单位边材横截面积的比例ꎬ与横向物质传输和储存
射线组织比例 能力有关
Rpf %
Ray parenchyma proportion Proportion of ray tissue to the unit cross ̄sectional area of sapwood is
related to radial transport and storage capacity
纤维组织占单位边材横截面积的比例ꎬ与机械支持有关
纤维组织比例
Fb % Proportion of fiber tissue to the unit cross ̄sectional area of sapwood is
Fiber proportion
associated with mechanical support
单位视野内的导管直径的加权平均值ꎬ与水分运输有关
水力导管直径
D h μm Weighted average of vessel diameters per unit viewing area is
Hydraulic vessel diameter
associated with water transport efficiency
导管壁厚度(t)与导管腔大小(b)的比值ꎬ与抗栓塞能力有关
导管壁加固系数
t/ b - Ratio of vessel wall thickness ( t) to vessel lumen diameter ( b) is
Vessel wall reinforcement coefficient
associated with embolism resistance
理论导水率
 ̄1
 ̄1
Theoretical hydraulic K t kgm s MPa  ̄1 木质部理论水分运输能力
Theoretical water transport capacity of xylem
conductivity
叶片各组织厚度之和ꎬ与抗性有关
叶片厚度
LT μm Sum of thicknesses of all leaf tissue layers is associated with
Leaf thickness
stress resistance
位于上表皮之下的绿色同化组织ꎬ与光能的吸收利用有关
栅栏组织厚度
PT μm Green assimilatory tissue located beneath the upper epidermis is
Palisade tissue thickness
associated with light energy absorption and utilization
栅栏组织和下表皮之间的绿色同化组织ꎬ与光合能力和气体交
换有关
海绵组织厚度
ST μm Green assimilatory tissue located between the palisade tissue and
Spongy tissue thickness
lower epidermis is associated with photosynthetic capacity and
gas exchange
栅栏组织厚度 / 海绵组织厚度 栅栏组织与海绵组织厚度的比值ꎬ与光合能力有关
Palisade tissue thickness / PT / ST - Ratio of palisade tissue thickness to spongy tissue thickness is
Spongy tissue thickness correlated with photosynthetic performance
比叶面积 与叶片构建成本和光合速率有关
2
SLA cm g  ̄1
Specific leaf area It is associated with leaf construction cost and photosynthetic rate
叶片穿刺力 表征叶片机械抗性
kNm  ̄1
F p
Leaf punching force It denotes leaf mechanical strength
上、下表皮的厚度 表皮细胞是覆盖叶片最外层的活细胞ꎬ主要起保护作用
Upper epidemis thicknessꎬ UET、LET μm Epidermis cells are living cells covering the outermost layer of
lower epidemis thickness leavesꎬ primarily acting as a protective barrier
角质层是覆盖在表皮细胞外壁表面的一层非细胞结构ꎬ主要起
上、下角质层的厚度 保护作用
Upper cuticle thicknessꎬ UCT、LCT μm
Stratum corneum is a non ̄cellular layer covering the outer surface of
lower cuticle thickness
epidermis cellsꎬ primarily providing protective functions

