环境与发展是当今社会最为关注的热点问题。人类现代赖以生存的自然环境,是由过去随着时间迁移逐渐演化而来的。现代环境与过去地质时期联系最为密切的是诞生人类的第四纪,即距今最近大约240万年以来的环境变化。在这个时期,特别是全球性气候严寒的冰期与温暖的间冰期周期性交替出现,对人类进化、海平面 Environment and development are the hot issues of most concern to our society today. The natural environment upon which mankind depends for its existence has gradually evolved from the past as time passed. The most important connection between the modern environment and the past geologic period is the Quaternary of the birth of mankind, that is, about 2.4 million years since the recent changes in environment. During this period, in particular, the global cold climate and the warm interglacial period alternates cyclically, and human evolution, sea level