中国近5000a来地质灾害群发性与环境变化

中国近５０００ａ来地质灾害群发期中岩石围异常事件存在着同步性、叠加性、相关性。灾害群发期与太阳活动等宇宙因素、中国不同地区环境演变──冰川进退、黄土沉积、沙漠化演化、海平面变化，降水变迁等对比分析，揭示出地质灾害群发的重要环境背景──温暖潮湿的气候条件；并且在宇宙变化→构造活动→气候变化→地质灾害群发之间存在着链锁性效应。

THE SYNCHRONOUS PERIODS OF GEOLOGIC HAZARDS AND ENVIRONMENTAL CHANGES DURING THE PAST 5 000 YEARS IN CHINA

This paper discusses the characteristics of synchronism, coincidence and coherence of the abnormalevents occured in litbosphere, such as rock avalanches, landslides, ground collapses, volcanic eruptions,earthquakes and faultings, at the ten synchronous periods of geologic hazards during the past 5000 years inChina. Through analysing the hazards synchronization with the solar activity, cosmic rays variation as well asthe loess sedimentation, desertification process, sea level variation and precipitation oscillation in the different districts of China, the authors put forward that the geologic hazards always appeared during the warmand humid climatic intervals in the historical periods and there existed a series of the chain effects among thecosmic variation, tectonic activity, climatic flunctuation and geologic hazards synchronization.