本文研究了粤东89种常见植物叶功能性状包括叶面积(LA)、比叶面积(SLA)、叶干物质含量(LDMC)、叶氮含量(LNC)的变异特征及其与科类群、生活史属性和生境的关系。
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Linear and exponential forms were the main forms which could describe the leaf nitrogen content.
直线与指数方程是各颜色空间描述叶氮含量的最主要也是最佳形式。
参考来源 - 基于可见光—近红外光谱的冬小麦氮素营养诊断与生长监测·2,447,543篇论文数据，部分数据来源于NoteExpress
中度放牧并未使草地牧草产量和红三叶的重要值降低，同时使草地红三叶均质度系数保持在远低于1.0水平以下，但使土壤全氮含量下降0.085%。
Meantime it keeps the coefficient of homogeneity of red clover far below the 1.0 level but causes the total nitrogen content of soil to decrease by 0.085%.
采集了燕山山区20个苹果园富士、国光和金冠等品种的120份叶样，对叶片中氮、磷和钾含量进行了分析。
The Fuji, Ralls and Golden Delicious of apple varieties, 120 samples were collected from 20 orchards in Yanshan mountain area and the leaf n, p, K contents were analyzed.
叶绿素含量与净同化速率间没有显著关系，但与含氮量和比叶重有关。
Chlorophyll content had no significant relation with the net assimilation rate, but was related to the nitrogen content and the specific leaf weight.
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