1 Using a sample of 24 common deciduous angiosperm trees of the Eastern Deciduous Forest region of North America, we tested the hypothesis that leaf size variation across species can be interpreted in terms of a trade-off between individual leaf mass and the number of leaves produced. 2 The ...
1 Using a sample of 24 common deciduous angiosperm trees of the Eastern Deciduous Forest region of North America, we tested the hypothesis that leaf size variation across species can be interpreted in terms of a trade-off between individual leaf mass and the number of leaves produced. 2 The ...
1 they didn’t have a special day like the Tree-Planting Day, the tradition of planting trees has been there for a long time. Back then, it was always warm and 2 around the Qingming Festival. The trees were easy to 3 in spring. The ancients formed the tradition of planting trees arou...
increased leaf-level productivity5,8. We refer to this as the performance-persistence trade-off, because resource acquisition costs can either be directed toward resource conservation and leaf persistence10, or fast growth and photosynthetic performance. The global spectrum of plant form and function e...
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Stomata are micropores in the leaf epidermis, bounded by a pair of guard cells that regulate the exchange of CO2and water vapor between the leaf and the atmosphere. The stomata have been influencing plant adaptation and functions ever since their evolution enabled plants to colonize land1,2,3....
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The Trembling of a Leaf(一片树叶的颤动),1916年,毛姆来到南太平洋上的乌波卢岛旅行,惊奇地发现这里正是他想象已久的世外桃源:充满异域风情的热带景貌、美丽单纯的萨摩亚姑娘,还有亘古不变的自然生活,一切宛如伊甸园般美好。然而,这里也是英、美、德三国共同瓜分
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There was no town, but merely a group of official buildings, a store or two, and at the back, among the coconut trees and plantains, a few native dwellings. The house they sought was about five minutes' walk from the wharf. It was a frame house of two storeys, with bro...