人类生存和发展对生态环境的负效应

人类赖以生存的环境是长期演变形成的，若无人类活动的影响，在短期内是相对稳定的，由于近１００年来人口数量的激增，人类活动的加剧，社会生产的发展，对资源和环境的压力增大，加之人类一系列破坏性的开发行为和保护环境的不力，对生态环境产生了极为严重的负效应，物种减少、植被破坏、水土液失、水环境和大气环境恶化。因此必需控制人口增长，保护生态环境，走持续发展道路。

Negative Effects of Human Existence and Development on the Ecoenvironment

The environment has evolved over a very long time.It was comparatively stable before the human existence. At present, our ecoenvironment has been damaged ser iously by the increasing population pressure on the resources and environment an d the development of social production. Now, the problem of environment is very urgent: the species are reducing; the vegetation is being destroyed, water and s oil are lossing, the environment of water and air is worsening. Only control the increase of population and protect the ecoenvironment,can we keep developing.