There are stable rhizome age structures in all mosic with different densities except the sparsest population with higher biomass allocation in one year rhizome than that in two years old rhizome. 不同密度斑块有稳定的根茎年龄结构,只在低密度群有增长型的根茎生物量分配;
Variation in stomatal density and sizes was great over the leaf surface: the distribution of stomata near to the leaf margins was densest and at the leaf tip sparsest; 气孔大小和密度的分布也有很大的不均一性:叶片边缘气孔分布最多,叶片顶部气孔分布最少;
The sparsest respond of these specific neurons to the input image was optimized by clone selection algorithm. 这些特定神经元对输入图像响应的最稀疏优化通过克隆选择算法实现。