人类活动对翼手类生存环境的影响

翼手类捕食农林昆虫，对人类有益。其粪便和肉可入药，与人类关系密切。人类活动主要通过对其栖息环境和食等方面，影响翼手类的种类、数量和分布。影响翼手类栖息地的主要因素有：人类生产活动对森林的砍伐和开垦、自然洞穴的开发利用、房屋结构的改变和水工建筑等。影响翼手类的保护，随着人为活动的增加，翼手类的栖息环境将更加恶化，种类和数量将愈来愈少。

Preliminary study of the Effects of Human Activity on the Habitat of Bats

Bats feed on the insects in agriculture and forest. Its excrements and hoes can become the traditional chinese medicines, so bats have a close relationship with mankind. Human beings mainly affect bat's species, numbers and distribution through habitat, food and so on. The main factors affecting bat's habitat are: enlargement of human's settlement, utilization of natural cave, change of house structure and hydroelectric projects, etc. The factors influencing bat's food are:de struction and decrease of natural forests', change of plant cultivation and use of pesticide, etc. If we don't strengthen the protection of bats, with the increase of human activities, hat's habitation environment will deteriorate and its species and number will drop gradually.