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In the Tibet Autonomous Region , Lhasa and Shigatse are the two core cities in the region’ s development , and they play a leading role for the development of other counties and cit-ies.From the perspective of research on urban ag-glomeration and urban geography , the two cities have a relationship of interactive contact and com-mon development .Within the context of rapid ur-banization in China , the interactive development between Lhasa and Shigatse has become an inevita-ble research focus for the socio-economic construc-tion of Tibet .
The intensity of economic contact is used tomeasure the degree of regional economic ties.Onthe one hand, it can reflect the city’ s economiccenter ability to radiate out to the surrounding areas.On the other hand, it can also reflect the levelof acceptance of the surrounding areas to the city’s economic center ability to radiate out tothem.According to the results of economic calculation,the intensity of economic contact betweenLhasa and Shigatse from 2007 to 2011 steadily increasedwith an annual rate of about 20%.Thecontinuous increase of the intensity of economiccontact also meant that the influence of Lhasa andShigatse on the surrounding cities is expanding .Moreover, comparative data show that due to restrictionson the population and level of economicdevelopment, there is still a big gap in Lhasa andShigatse if compared with other urbanized areas inChina.However, regarding the increasing speedof the intensity of contact with other core cities,Lhasa and Shigatse have achieved remarkable a -chievements.
During the 1930’ s, William J.Reilly proposedthe Law of Retail Gravitation which was usedby P.D.Converse in the field of urban managementto differentiate the scope of influence ofneighboring cities.In 1949, he put forward theconcept of “Breaking Point” together with a relevantcomputational formula.The Breaking Point isnormally determined by the scale of two cities andthe distance between them.According to the calculationresults from the relevant data and computationalformula, the Breaking Point (2011) betweenLhasa and Shigatse is in the area which is about191.27km ~217.75km away from Lhasa, i.e.the area which is about 62.25km ~88.73kmaway from Shigatse.In other words, the BreakingPoint is somewhat to the east of Shigatse , and isclose to Nianmu township and Lianxiang township .Based on the situation that there are no other bigcities in the surrounding areas of Lhasa and Shigatse,and taking the Breaking Point as the orthocenter,by drawing a vertical line from Lhasa toShigatse, we can extend the Breaking Point to a“Belt”.This also has a “breaking point feature”(where the influence of Lhasa and Shigatse isweak).The main area involved is Tumujia areawithin Nanmu County.
As centers of regions, cities do not exist in isolation.Cities play interactive roles and have influenceon their surrounding regions.Throughtransportation, communication, etc., there areexchanges between cities, including human,goods, services, information, technology and fi nancial resources.This kind of interaction betweenthe urban areas creates an organic wholewithin the region.The interaction between citiesnot only promotes the development of the surroundingareas, but also promotes the development ofthe whole area.Lhasa and Shigatse have longbeen core cities of Tibet Autonomous Region in theQinghai-Tibet high plateau of western China.Theyoccupy an important position in the developmentstrategies, such as the development of the Tibetaneconomy and building a harmonious society.Despitetheir significant differences with other citiesin China, which includes geographical location,natural conditions, ethnic culture and industrial economicdevelopment, and despite the existence ofa certain degree of adverse effects, we firmly believethat with the deepening of China′s urbanizationprocess, the continuous development of nationaleconomy and technology, the opening up ofthe Qinghai-Tibet railway, as well as the furtherintegration of culture, Lhasa and Shigatse ’ sleading role in the urbanization development of Tibetwill be more and more prominent.And, theinteractive relationship between the two cities willbecome closer and closer.
Moreover, in accordance with the theory of“Breaking Point”, there is a breaking point betweenLhasa and Shigatse.Judging from thisBreaking Point, the influence of the two cities isrelatively weak.Paying attention to the existenceof the Breaking Point, and making clear the locationof the Breaking Point, and then trying to handlethe adverse effects of the Breaking Point is notonly one of the key actions for strengthening the interactionand co-development of Lhasa and Shigatse,but also one of the feasible strategies for promotingtheTibet Autonomous Region’ s overall urbaninteractive development to become more harmoniousand reach a deeper level.
The intensity of economic contact is used tomeasure the degree of regional economic ties.Onthe one hand, it can reflect the city’ s economiccenter ability to radiate out to the surrounding areas.On the other hand, it can also reflect the levelof acceptance of the surrounding areas to the city’s economic center ability to radiate out tothem.According to the results of economic calculation,the intensity of economic contact betweenLhasa and Shigatse from 2007 to 2011 steadily increasedwith an annual rate of about 20%.Thecontinuous increase of the intensity of economiccontact also meant that the influence of Lhasa andShigatse on the surrounding cities is expanding .Moreover, comparative data show that due to restrictionson the population and level of economicdevelopment, there is still a big gap in Lhasa andShigatse if compared with other urbanized areas inChina.However, regarding the increasing speedof the intensity of contact with other core cities,Lhasa and Shigatse have achieved remarkable a -chievements.
During the 1930’ s, William J.Reilly proposedthe Law of Retail Gravitation which was usedby P.D.Converse in the field of urban managementto differentiate the scope of influence ofneighboring cities.In 1949, he put forward theconcept of “Breaking Point” together with a relevantcomputational formula.The Breaking Point isnormally determined by the scale of two cities andthe distance between them.According to the calculationresults from the relevant data and computationalformula, the Breaking Point (2011) betweenLhasa and Shigatse is in the area which is about191.27km ~217.75km away from Lhasa, i.e.the area which is about 62.25km ~88.73kmaway from Shigatse.In other words, the BreakingPoint is somewhat to the east of Shigatse , and isclose to Nianmu township and Lianxiang township .Based on the situation that there are no other bigcities in the surrounding areas of Lhasa and Shigatse,and taking the Breaking Point as the orthocenter,by drawing a vertical line from Lhasa toShigatse, we can extend the Breaking Point to a“Belt”.This also has a “breaking point feature”(where the influence of Lhasa and Shigatse isweak).The main area involved is Tumujia areawithin Nanmu County.
As centers of regions, cities do not exist in isolation.Cities play interactive roles and have influenceon their surrounding regions.Throughtransportation, communication, etc., there areexchanges between cities, including human,goods, services, information, technology and fi nancial resources.This kind of interaction betweenthe urban areas creates an organic wholewithin the region.The interaction between citiesnot only promotes the development of the surroundingareas, but also promotes the development ofthe whole area.Lhasa and Shigatse have longbeen core cities of Tibet Autonomous Region in theQinghai-Tibet high plateau of western China.Theyoccupy an important position in the developmentstrategies, such as the development of the Tibetaneconomy and building a harmonious society.Despitetheir significant differences with other citiesin China, which includes geographical location,natural conditions, ethnic culture and industrial economicdevelopment, and despite the existence ofa certain degree of adverse effects, we firmly believethat with the deepening of China′s urbanizationprocess, the continuous development of nationaleconomy and technology, the opening up ofthe Qinghai-Tibet railway, as well as the furtherintegration of culture, Lhasa and Shigatse ’ sleading role in the urbanization development of Tibetwill be more and more prominent.And, theinteractive relationship between the two cities willbecome closer and closer.
Moreover, in accordance with the theory of“Breaking Point”, there is a breaking point betweenLhasa and Shigatse.Judging from thisBreaking Point, the influence of the two cities isrelatively weak.Paying attention to the existenceof the Breaking Point, and making clear the locationof the Breaking Point, and then trying to handlethe adverse effects of the Breaking Point is notonly one of the key actions for strengthening the interactionand co-development of Lhasa and Shigatse,but also one of the feasible strategies for promotingtheTibet Autonomous Region’ s overall urbaninteractive development to become more harmoniousand reach a deeper level.