增长型种群：指在增长型种群中，老年个体数目少，年幼个体数目多，在图像上呈金字塔型，今后种群密度将不断增长，种内个体越来越多。
结果表明：沙地云杉为缓慢增长型种群；
The spruce population on the sandy land was of low increase type.
在生长季末，种群中根茎在累计长度和重量上均为增长型年龄结构。
The age structure of rhizome is an increasing model at length and weight at the end of growing season.
割草场和放牧场硬拂子茅无性系种群分蘖株均属于增长型年龄结构。
The age structures of the tillers of the grass on both pastures for grazing and cutting uses are of an expanding type.
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