Research On Water Conservancy Disputes In The Middle And Lower Reaches Of The Puyang River During The Song And Ming Dynasties

Taking the Puyang River as the research object,this paper discusses the interest relationship and mutual game between the middle and lower reaches through the restoration of the convergence between the discussion and the real development in the Song and Ming dynasties,and expounds the causes of the disputes from the perspective of the changes of the river and lake water system.Around this theme,this paper is divided into three parts.The first part of the Song and Ming dynasties of the Puyang River discussion and Kai Shikai Hui situation is restored.From the perspective of quantity,there are more "hui" in the Ming Dynasty than in the Southern Song Dynasty.From the perspective of space,there are more "hui" in the middle reaches than in the lower reaches.In terms of the result,it is the Southern Song Dynasty that negotiates and the Ming Dynasty that actually develops.The second part describes and analyzes the dispute of opening foreign exchange between Zhuji and Xiaoshao in the Song and Ming Dynasties,as well as the interest entanglement behind the dispute.During the reign of Emperor Qiandao,the reclamation of lakes in the middle and lower reaches of the Puyang River accelerated,resulting in a sharp reduction of water space,resulting in the deterioration of the water environment and continuous floods.Under such circumstances,Zhuji in the middle reaches of the Puyang River requested to open a sink to discharge water,but was refuted by Xiaoshao in the lower reaches.During the Wanli period,local officials in Xiaoshao took various measures to solve the flood problem.The plain water conservancy project system was completed,and the ability to prevent moisture and flood was enhanced,which provided a guarantee for the local development.The opposition to the opening of the foreign exchange weakened.The third part discusses the relationship between the changes of river and lake system and the dispute of opening sinks in the middle and lower reaches of Puyang River from the point of view of natural geography.When the Puyang River flows from the east to the west,Zhuji and Xiaoshao are the middle and lower reaches,which interact with each other.Influenced by natural and human factors,the environment of the middle and lower reaches is relatively bad,the water area gradually becomes a river network,the disaster prevention ability is weakened,and droughts and floods occur frequently.At this time,the opening of the sinks is favorable to the middle reaches but not to the lower reaches,which is a contradiction.After the Puyang River exits the Qiantang River in the west,Zhuji and Xiaoshao Plain belong to different basins,and the opposition of interests becomes loose.In addition,the river diversion and development of the two water environment changes,Zhuji drainage is more difficult,a serious threat to the production and life of the people,the opening of the drainage is imminent,the Xiaoshao Plain formed a river water network system,the flood greatly reduced,the attitude of the opening of the exchange has eased.