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不同水热梯度下冠层优势树种叶片热力性状及适应策略的变化趋势
周莹莹1,2, 林华1,*()
Variation of leaf thermal traits and plant adaptation strategies of canopy dominant tree species along temperature and precipitation gradients
ZHOU Ying-Ying1,2, LIN Hua1,*()

图1. 云南省具有明显水热梯度的不同森林间叶片热力性状的差异。不同颜色代表差异显著, a、b, 代表从高到低排序; n, 代表4个森林间没有显著差异。SAV, 元江干热河谷植被; STF, 哀牢山亚热带常绿阔叶林; TEF, 丽江温带针阔混交林; TRF, 西双版纳热带雨林。Aarea, 单位面积最大净光合速率; Amass, 单位质量最大净光合速率; Abs, 叶片吸收率; Area, 单叶叶面积; EWT, 单位面积叶片含水量; Greenness, 绿度; LDMC, 叶干物质含量; LMA, 比叶质量; Peri, 单叶叶片周长; Ref, 叶片反射率; SPI, 气孔开口面积指数; Tr, 蒸腾速率; Thickness, 叶片厚度; Trans, 叶片透射率; Vein_density, 叶脉密度。

Fig. 1. Leaf thermal traits across different forests with obvious temperature and precipitation gradients in Yunnan Province. Different colors represent significant differences: a, b represent significant differences ranking from the highest to the lowest; and n shows no significant differences among the four forests. SAV, savanna vegetation in Yuanjiang; STF, subtropical evergreen broadleaf forest in Ailao Mountain; TEF, temperate mixed forest in Lijiang; TRF, tropical rain forest in Xishuangbanna. Aarea, maximum photosynthetic rate per area; Amass, maximum photosynthetic rate per mass; Abs, absorptivity; Area, individual leaf area; EWT, leaf equivalent water thickness; Greenness, leaf greenness; LDMC, leaf dry matter content; LMA, leaf mass per area; Peri, individual leaf perimeter; Ref, reflectivity; SPI, stomatal pore area index; Tr, transpiration rate; Thickness, leaf thickness; Trans, transmissivity; Vein_density, vein density.