目的调查大理州洱源县小兽类哺乳动物种群结构。
Objective To study the population structure of small mammals in Eryuan Dali.
对小型哺乳动物种群数量周期性波动的外因调节假说进行介绍，概述了食物假说、捕食假说和复合因子假说的主要内容和研究进展。
This paper reviewed the new progress in the theory and hypothesis of population regulation in small mammals, focusing on the food hypothesis, predation hypothesis and multi-factorial hypothesis.
岛上物种群体包括在其它地方找不到的70种狐猴，其它哺乳动物占约90%，在其宽达226,656平方英里的土地上，两栖动物和爬行动物是稀罕独特的。
The island's population includes 70 kinds of lemurs found nowhere else and about 90 percent of the other mammals, amphibians and reptiles are unique to its 226,656 square miles.
岛上物种群体包括在其它地方找不到的70种狐猴，其它哺乳动物占约90%，在其宽达226，656平方英里的土地上，两栖动物和爬行动物是稀罕独特的。
The island's population includes 70 kinds of lemurs found nowhere else and about 90 percent of the other mammals, amphibians and reptiles are unique to its 226, 656 square miles.
根据五年来的观察，在5487种已知的哺乳动物中，有1141个种群受到威胁，有188个被列入最高级别“濒危灭绝”的物种名单上。
At least 1, 141 of the 5, 487 known species of mammal are threatened, with 188 listed in the highest risk "critically endangered" category.
这些种群被称为“脊椎动物物种，”即拥有脊椎的动物，像鱼类、鸟类、哺乳动物、两栖动物和爬行动物。
These populations are called "vertebrate species," or animals with backbones — like fish, birds, mammals, amphibians and reptiles.
这些种群被称为“脊椎动物物种，”即拥有脊椎的动物，像鱼类、鸟类、哺乳动物、两栖动物和爬行动物。
These populations are called "vertebrate species," or animals with backbones — like fish, birds, mammals, amphibians and reptiles.
应用推荐