...变化趋势和主要原因，运用单因子方差分析（ ANOVA）分别对各年度间密度和生物量进行差异显著性检验，并利用马加利夫（ Margalef）物种丰富度指数对水质状况进行了评价。结果表明：海河干流浮游植物隶属8门92属181种。
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...分的Shannon指数（H＇）和Simpson指数（D）分别为2.01和0.93,均为各个林分中最高;杉木人工林中坡的草本层丰富度指数（Margalef指数）均高于其他坡度的林分,表明了杉木人工林中坡植物种类丰富,林下光源充足;杉木人工林灌木层物种均匀度Jsw指数的平均值分为1.58...
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Margalef index 丰富度指数
Cochlodinium polykrikoides Margalef 旋沟藻
Ramon Margalef 导入能量循流的内涵
Margalef richness index Margalef丰富度指数
Margalef put it this way: "From empirical evidence it seems that species that interact freely with others do so with a great number of other species."
马格·列夫这样说：“从观察结果看，物种似乎是自由的和别的物种相互作用，物种数量巨大时也是这样。”
The other important point one can extract from May's simulations was best articulated in an observation made a few years earlier by the Spanish ecologist Ramon Margalef.
从迈的模拟中得出的另一重要点是将观察阐述的最好的是几年前由西班牙生态学家罗蒙·马格·列夫。
Margalef noticed, as May did, that systems with many components would have weak relations between them, while systems that had few components would have tightly coupled relationships.
马格·列夫注意到，就像迈说的，由许多成分组成的系统彼此之间的联系是弱的，而几乎没有组成部分的系统则可能会有紧密的联系。
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