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trophic dynamics method
释义
trophic dynamics method
Encyclopedia
农学
渔业资源评估营养动态法
释
trophic dynamics method
渔业资源评估营养动态法
用生态系统能量流动的原理,将生态系统的消费者分为不同的营养层次,利用不同营养层次之间的生态效率,计算出研究对象生产量或潜在资源量的方法。又称根据初级生产力估算的方法。水域中的绿色植物作为初级生产者,称其生产量的大小为初级生产力。
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characteristic number
characteristic number of a manifold
characteristic number of a matrix
characteristic number of an operator
characteristic numbers of distribution
characteristic of a differential equation
characteristic of a field
characteristic of a hypersurface
characteristic of a logarithm
characteristic of an integral equation
characteristic of a ring
characteristic operator
characteristic operator function
characteristic parameter
characteristic parameter of antenna
characteristic piece
characteristic plane
characteristic p-method
characteristic point
characteristic polynomial
characteristic polynomial of a graph
characteristic polynomial of a matrix
characteristic quadratic form
characteristic radius
characteristic ray
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