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变化和极端在植物叶子润湿性和径流特性从不同的栖息地

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表面润湿性能属性的自然变化和极端的叶子是调查了85个家庭的396年植物物种生长在三个不同的大洲在不同海拔(186 - 5268),在所有主要生态区域。这应该产生的范围叶面wettablility属性还允许检测极端疏水性和亲水性叶子表面。表面润湿性能的属性是通过测量接触角θ的定义水滴应用到树叶和运行角度。雷竞技网页版叶表面的润湿性显著不同物种之间(16.7°<θ< 169.7°)。72.6%的物种调查显示极端的表面性质,是高度可与水混合的或extreme-hydrophilic(37.8%)或高度non-wettable extreme-hydrophobic (34.8%)。叶子表面润湿性能是在一些家庭具体。酢浆草料和豆科疏水性质,杜鹃花科、桑科,而亲水。许多家庭占所有润湿性类。十六个叶表面被extreme-hydrophilic(θ= 27-40°),但有一个例外发现在热带亚热带生态区域。Extreme-hydrophilic性能detetcted更频繁地在无毛和近轴的叶片表面。 Twenty-four leaf surfaces were superhydrophobic (θ>150°), were from virtually all ecological zones and observed mostly abaxial and on pubescent leaves. On extreme-hydrophilic leaf surfaces water droplet run off occurred at a significantly lower mean angle of inclination (8°) as compared to super-hydrophobic (19°) leaf surfaces. Within each leaf wettability category, significant differences between species with respect to run off angle were found. Leaf surface wettability properties in the 396 species tested were highly divers. Extreme surface properties were only partly related to the ecological zone or a peculiar family and run off and leaf surface wettability turned out to be independent functional traits.

Biva Aryal吉尔伯特纽

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