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对许多多年生克隆植物来说，大量的研究表明：当光是限制因子时，随着立地密度的不断增加，克隆分株的出生率逐渐减小、死亡率逐渐增加。本文观测了乔木状高大竹类植物毛竹竹笋的出生与存活过程，结果表明：竹笋的出生率，即每样方的出笋数，明显地随着成竹立竹度的增加而增加。更确切地说，竹笋的数量，不管是出笋数还是活笋数，都明显地随着带新叶（１龄叶）的成竹立竹度的增加而增加，而与带老叶（２龄叶）的成竹立竹度相关性不显著。并且竹笋的死亡率是非密度制约的。这可能是由于对毛竹来说，其立地总是比较开敞，而且，其竹笋的生长在很大程度上是不直接需光的。
For many perennial clonal plants, a large number of studies have shown that when the light is a limiting factor, with the increasing site density, the birth rate of clonal rapides gradually decreased, the mortality rate increased gradually. The results showed that the birth rate of bamboo shoots, that is, the number of bamboo shoots per square plot, obviously increased with the increase of bamboo bamboo stand number. More specifically, the number of bamboo shoots, irrespective of the number of shoots or number of shoots, increased significantly with the number of bamboo shoots with new leaves (1st leaf) Age of leaves) bamboo stand bamboo correlation was not significant. And the mortality of bamboo shoots is non-density-restricted. This may be due to the fact that the habitat of bamboo is always relatively open, and the growth of bamboo shoots is largely out of direct demand.