The Historical Geography Research Of The Western Area Of Chongqing

About65-66million years ago, the climate of the wester area of Chongqing is warm and humid. There was lush native vegetation and a variety of original animals. About20,000years ago, the original human began to appear the western region of Chongqing. Human activitiesspace was expanding so rapidly with the continuous improvement of productivity that increased prominent contradiction with the natural environment. During this period, after repeated but in the end due to the activities of human, many ancient plants and animals disappeaed in the region.Natural disasters were nature’s response to human activities.The main natural disasters in wester area of Chongqing were droughts, floods, rain, wind, hail disasters, earthquakes and so on. From the view of time, The number of natural disasters recorded by the ancient increase gradually, for the longDynasty, disappered data,deterioratednatural environment, increased population density inThe same area and so on.From the point of view of regional distribution,drought recorded in wester area of Chongqing,the Qijiang county, the Rongchang county,and the Dazu county had the highest frequency, among them the Qijiang county the number of the chongqing west region more than forty percent of the total number of times;the flood in geographic distribution of northern area more than in the south inthe wester area of Chongqing During historical period.The number of flooding times of Hezhou, Tongnan and Tongliang about fifty percent of the total number of the Chongqing west region flood. In addition, the number of flood in the Qijiang county which is in Chongqing southwest side is also quite much.History of Western Area rain disaster frequency are more evenly distributed throughout the region. In general, the north of Hezhou, at the central south of Yongchuan and the Qijiang count is high winds, hail occurred at the southern end of the region; the wester area of Chongqing geological structure is relatively stable, historical period of the earthquake are mainly concentrated in Bishan and Rongchang region, on time, the wester area of Chongqing is geologically active in Song Dynasty and Qing DynastyEarthquake magnitude is low in the western area of Chongqing,so the damage is limited. In addition,there was snow,frost,pests and so on in Chongqing west areas during historical period.Throughout the process of historical development, both in politics, demographics, agriculture and transportation, culture,Western Area show an "both of the ends raised and the middle sag" development momentum.From evolution perspective, Hechuan which is in northern of the western area of Chongqing had been set to DianJiang county in Qing Dynasty Jianjing which is in the south of the western area of Chongqing had been set to Lecheng county.While other parts ofthe western area of Chongqing which set county were relatively late. With the advance of social productivity, the population is growing in the wester area of Chongqing during Historical period. ChongqingWestern Areapopulation is concentrated in the north west region of the southern Hechuan, Tongliang and Jiangjin; In the process of agricultural development, besides the Qijiang count, the whole Chongqing west region development degree has reached a higher level, and the Hechuan and the Jiangjin north and south ends is Western Areaagricultural development area of relatively fast. From the point of view of transportation, Hechuan is the north of three rivers (Qujiang,Fujiang,Jialingjiang)confluence,so waterway transportation is quite convenient. Jiangjin is the important node in the Yangtze river waterway, at the same time as the Qijiang count important hub for the region traffic. So the whole chongqing west region transportation line on Hechuan,Jiangjin and the Qijiang count. In the level of cultural development, more concentrated distribution in western area of Chongqing College of historical period, Tongliang in the north and south of Jiangjin accounted for half of total throughout the west of Chongqing college more. In addition,,Hechuan and TongLiang had prominent position in the numeber of a person or a jureng in the southwest region of chongqing. From the personnel quality, the distribution of historical period of west region of the national well-known scholars and officials and unbalanced state, as Chongqing northwest state, Tongliang and Chongqing in southwest Jiangjin same quantity occupies six of the total number also was strong. the west central vast area added up to less than four. Distribution of mass distribution personnel quantity, and college generally consistent, namely, again showing a "both of the ends raised and the middle sag""state...