Study On Lhasa Spatial Form Evolution Of Tibet “Gandan Pozhang Regime”(1642-1951)

Lhasa is located in the Lhasa River Valley, the south of the Qinghai-Tibet Plateau, surrounded by mountains, a stream of water, with an average altitude of 3650 meters. Since A.D.633, King Songtsen Gampo moved to the city, so far has been 1380 years of history of the city. In 1642, in support of Heshuote division of Gushi Khan, the fifth Dalai Lama overthrew the tsangpa regime, established Ganden phodrang regime and set Lhasa as the capital. Since then, Lhasa became the political center, a religious center, economic center and cultural center of Tibet. Following the Tubo Dynasty, Lhasa ushered in the second city construction climax. In 1951, the Chinese People’s Liberation Army stationed in Lhasa, the peaceful liberation of Tibet, the destruction of the kingdom of Lama. Based on the urban history, urban morphology, architecture, urban planning theory, fusion urban social science, geography, economics, and other multi-disciplinary theoretical knowledge, combining with the relevant literature and field research, conduct a case study on Lhasa city spatial form evolution(1642 – 1951).This thesis consists of seven chapters. The first chapter introduces the origin of the topic, research purpose and significance, research object, research methods, and on the basis of research results at home and abroad, teases out the research framework and theoretical basis. The second chapter not only describes the urban situation, historical evolution, and combs the urban spatial morphology changes of Lhasa before 1642, but also analyzes the urban spatial form change and the urban natural environment, politics, religion, economy, society and so on. The third chapter, the fourth chapter and the fifth chapter, according to the important historical turning points of the period of Gandan Pozhang regime, divided into different historical development stages, including the middle of the 17 th century to the 18 th century the city construction, the middle of the 18 th century to the 19 th century urban development, the end of the 19 th century to the peaceful liberation of Tibet(1951) urban transformation, focusing on the different historical background, important events that had taken place in the city building, efforts to summarize the characteristics of each historical period the expansion of urban space form, function and succession. The sixth chapter from the boundaries, roads, urban nodes, interprets the image of urban space during the Gandan Pozhang regime and makes some thinking and suggestions for the future of the old city protection and development. The seventh chapter makes a summary of the discussion of the above chapters.Today, Lhasa is at a period of rapid urbanization, the expansion of urban population, urban construction land increase, resulting in urban space development, urban functional reorganization, urban structure and succession, thus promoting urban morphology evolving. In view of this, study on Lhasa spatial form evolution of the Gandan Pozhang regime and attempt to provide some enlightenment on the protection and development of the urban future.