【摘要】 本文探讨了生态系统和物种多样性所面临的威胁，指出目前物种灭绝的速度在加快，濒危物种在增多，生物多样性保护的重点应是濒危物种。并分析了生物多样性丧失的原因，认为人口过快增加是生物多样性危机的主要根源更多还原

【Abstract】 This paper discusses the threats with which the ecosystem and species diversity is faced. It is indicated that the species extinction is speeding, the endangered species are increasing. Endangered species should be the focal point of biodiversity conservation. The causes of decreasing biodiversity are analyzed in the paper. The over increase of human population is the main source that makes the biodiversity crisis.更多还原