Research Of The Relationship Between Climatic Changes And Wars In Chinese History

Dynasty in china appears to all experience a cycle: sage found the state--theoffspring ruin the state--another sage found the state. This is called Chinese DynasticCycle Theory. When studying Chinese history, lique insurrection, breakup of social system, incompetence of the feudal monarchs are just some possible reasons, natural factors are seldom taken into consideration. But still having no suitable explain that why history repeat so frequently.The several changes on climate brought immense effect to the society, and the heavier influence of geographic environment, the more human relies on geographic environment.During the study, we found that, study on combining environment change and Chinese Dynastic Cycle is fairly weak yet. As one of the four ancient civilization countries in the world, China is a nation with a long history, undergone tremendous regime changes, which always start with wars. The abrupt climatic changes, natural disasters and environment deterioration bring great loss to agricultural society and become the fuse of the wars. So, study on history problems from the angle of natural science, discuss the relationship between climate change and wars may fill the blank in this area of research.By applying such established materials as archives, local annals, collected works, and current research results, the main findings and contributions of this dissertation include:(1) In historical periods, it is not accidental that the synchronism of time between the change of climate and dynasties. Climatic change is a dynamic process; it is the same in wars and political development. The bad climate prevented the agriculture development, undermines the normal ruling base of regimes, and lead to destruction of dynasties.(2) There was negative correlation between temperature and war times.In cold periods, wars increase with the decreases of the temperature.Climatic cooling in warm periods, wars also increased rapidly when the temperature reached a certain degree, such as "The Medieval Warm Period ", wars burst in "cold vallery" although these two perids were all in warm periods. In fact, at certain.degrees, these impacts were greater and lack of relevant measures.(3) Differences exist among these areas, climatic changes and wars are closely related in Northwest China, with no lag period. Low temperature may cause conflicts and wars immediately; Wars among different nationalities were the main component of the history in Northeast and North China, minorities achieved a further development in warm periods, wars increased because of the desire for lands; There were some increase during the warm periods in Central and East China, mainly were rebellion wars, may caused by flood; To the Southwest and South China, impact of climate deterioration on wars was a gradual process, the effect of cold climate had certain characteristic of "lag response time", that may caused by drought.(4) From the features of arid and wet climate, China is a typical monsoon climatic region, it's climatic characteristics are displayed in such aspects: Warm and humid is in a period, the same as cold and dry. The minorities began to develop along with warm climate, cold climate means migration of vegetation to south and environment deterioration, that would have a fatal impact upon the minorities which live in arid and semi-arid regions and made a living by hunting and grazing.(5) Meteorological disasters caused by climatic change also lead to great loss to agricultural production in Central and South China, and this impact was different to the minorities in North China, wars increased both in cold and warm periods, wars may triggered by flood and drought which caused by climatic changes.