density dependent factors的意思|示意

The main effect factors of the quantity change of rodent were "nondensity dependent factor" and the density dependent factors had some effect also.

主要影响因素是非密度制约因素，但密度制约因素亦有一定影响。

There are as well as density-dependent biological factors such as disease, predation, and intraspecific competition .

还有密度制约的生物因素，诸如病害、捕食和种内竞争等。

There is no need to regard density-dependent factors as having any special importance.

没有必要认为密度制约因素具有任何特殊的重要性。