Chaohu Lake Basin Of The Qing Dynasty Spatial And Temporal Distribution Of Floods And Droughts

Historical Geography is the discipline of geo-environmental changes and development in the research and historical periods, the spatial and temporal distribution of the historical periods of flood and drought is an important aspect of geographical study of the history of disasters, the areas belonging to the study of historical and physical geography. Chaohu Lake Basin’s unique natural and geographical environment and climatic characteristics, so that the high frequency of occurrence of flood and drought disasters in the region, the weight of the disaster, which is the focus of attention of scholars.Time concern focused on the short period, less concerned about the long hours, and study the spatial and temporal distribution of flood and drought disasters in the historical period is even more weak.The author know, there is no thematic studies on spatial and temporal distribution of the history of Chaohu Lake basin during the flood and drought disasters, the deletion of the spatial and temporal distribution of the Qing Dynasty Chaohu Lake Basin floods and droughts.Based on this situation, take full advantage of the literature collection and collation of historical data of the Qing Dynasty of Chaohu Lake basin floods and droughts, the use of the knowledge and methods of historical geography, statistics, disasters, science, geography and other disciplines, floods and droughts of the Chaohu Lake Basin of the Qing Dynasty to enteroverall depth research, revealed the dynamic evolution of characteristics and spatial distribution of the time the law of the Qing Dynasty Chaohu Lake Basin flood and drought disasters, in order to make up for lack of academic research in this regard, while its Chaohu Lake Basin of the Qing Dynasty,hope to have practical significance on the Chaohu Lake Basin flood and drought prediction and prevention. In this paper, the following sections were discussed.The first part of the Introduction, the meaning and purpose of the topics, including its academic value and practical significance are described, and a brief academic history of the Chaohu Lake Basin flood and drought review and simple that its researchinadequate, and Chaohu Lake Basin, concepts and research the concept of time interval and a simple description of the concept of floods and droughts.The second part discusses the historical data related to the floods and droughts of the Qing Dynasty Chaohu Lake Basin and its origin, characteristics and the data were divided and classified. Involved in the Chaohu Lake basin floods and droughts through the collection of the Qing Dynasty prefectures of local history, archives, official history about the county government’s disaster records and related papers to be as comprehensive as possible to historical floods and droughts information, the convection within the the prefectures floods and droughts categorized finishing, floods and droughts information collected is divided into five according to the principle of a hierarchy on the disaster in China nearly five hundred years, droughts and distribution Atlas. And then developed the form of a chronological chart of the Chaohu Lake Basin in the Qing Dynasty prefectures of floods and droughts, and sort out the basic situation of floods and droughts of the Chaohu Lake Basin in the Qing Dynasty.The third part of the temporal and spatial distribution of the Qing Dynasty of Chaohu Lake basin floods and droughts. Detailed information collected by the second part of the classification and statistics, then the basin floods and droughts in different regions were compared, to reproduce the spatial distribution of floods and droughts of the Chaohu Lake Basin in the Qing Dynasty, to draw the various prefectures frequency of floods and droughts, the intensity and scope. Points, derived from the monthly and seasonal period of high and low frequency period of the Qing Dynasty of Chaohu Lake basin floods and droughts.Part IV, the time of the Qing Dynasty of Chaohu Lake basin floods and droughts Occurrence and spatial distribution and evolution of features were analyzed from the perspective of time and space. And analyze the causes of this law, and compare the Qing Dynasty Chaohu Lake Basin floods and droughts in the difference of the prefectures and the horizontal and vertical comparison obtained various prefectures floods and droughts temporal and spatial distribution pattern. Finally, from the space-time of the Qing Dynasty of Chaohu Lake basin floods and droughts distribution pattern of society at that time to want to be able to achieve the role of history review this.