Research On The Selection Of Sojourn Places Based On The Enrichment Law Of Air Pollutants In The Main Basins In Central Yunnan

At present,as a sublimation of tourism,sojourn has become a new trend of tourism,and is favored by more and more people,the construction of sojourn places is booming,so what kind of place to choose to develop sojourn has become the primary issue to be considered in the development of sojourn.Due to the subtropical plateau mountain monsoon climate in central Yunnan,the four seasons are like spring,the average temperature in each city is between 4.7°C and 23.7°C,and the average altitude is 1500-1900 meters,besides,there are rich health and wellness resources,it is considered by many to be an area suitable for living and development,and the local area is also actively seeking to develop the travel and residence format.At the same time,the development of sojourn requires relatively good conditions of transportation,economy,medical care,education,and resources,and basins,as a geographical unit of urban development,integrates various conditions,However,there are certain differences in the quality of the atmospheric environment inside each basin.Therefore,this paper takes the main basins in central Yunnan as the research object,takes the enrichment law of air pollutants as the background,and uses Arc GIS system software to process relevant vector data to study the selection of sojourn places based on the enrichment law of air pollutants in the main basins in central Yunnan,it provides a theoretical reference for the final site selection and reasonable construction planning of the main basins area living project in central Yunnan,and to effectively avoid or slow down the air pollution.The study found that 17 of the 24 main basins under the constraints of the atmospheric environment have suitable constituencies for sojourn,22 Basins have constituencies that are more suitable for sojourn,and 24 Basins have poor constituencies for sojourn.The specific research conclusions are as follows:（1）Almost both Yuxi basins and Tonghai basins are enriched areas for air pollutants.In the static wind state,the enrichment area of air pollution sources in the basin area is the accumulation area of air pollution sources.Under the control of the prevailing wind direction,the air pollutant enrichment areas of the other 22 main basins are located in the northeast of the basin area,except that the air pollutants of Yuanjiang basins and Dongchuan basins are enriched in the northwest and north mountain margins of the basin area respectively.Under the control of local circulation,atmospheric pollutants are mostly concentrated in the main urban areas of the basin area and the surrounding areas of the plateau lakes.（2）Under the constraints of atmospheric environment,the suitable areas for living in the main basins of central Yunnan mainly include the southern part of Kunming basins and the east bank of Dianchi Lake,the central and western part of Songming basins,the northwestward part of Chuxiong basins,and the central and eastern part of Yiliang basins and Yuanjiang basins,the middle of Xundian basins,the middle and west of Jiangchuan basins,the west and southeast of Muding basins,the west of Xinjie basins,the north of Yunlong basins,the middle and south of Shilin basins,the southeast of Nanhua basins,and the south of Bajie basins,the south and central north of Fumin basins,the south and southeast of Jijie basins,the middle and south of Bicheng basins and Dongchuan basins.（3）Under the constraints of atmospheric environment,the most suitable areas for living in the main basins in central Yunnan mainly include the southern part of Kunming basins and the surrounding area of Dianchi Lake,the northwest part of Songming basins,the mid-western and southern part of Yiliang basins,south and middle western parts and middle eastern parts of Xundian basins,northwest and south of Anning basins,middle southern and north of Fumin basins,north of Jijie basins,south and middle eastern of Yangzongcheng basins,west and east of Fuxian Lake of Chengjiang basins,the western part of Jiangchuan basins,the central and western part of Yuanjiang basins,the northwest of Chuxiong basins,the middle and south of Yuanmou basins,the north of Bicheng basins,the southwest and middle of Nanhua basins,the middle of Dongchuan basins,the middle of six main basins,such as Shilin,Bajie,Yaoan,Mouding,Xinjie and Yunlong.（4）The poor living area of the main basins in central Yunnan under the constraints of the atmospheric environment belongs to the enrichment area of air pollutants,mainly including the vicinity of the northeast side of the 24 major basins,the north side of the four major basins including Xundian,Shilin,Jijie and Dongchuan.Near the mountain edge,near the northwest mountain edge of the five basins including Shilin,Anning,Fumin,Jijie,Dongchuan,and the east side of the Bicheng basins.At the same time,it also includes the northern part of 5 major basins including Kunming,Yiliang,Yangzongcheng,Chengjiang and Yuanjiang,and the southern part of 4 major basins including Chuxiong,Yunlong,Bicheng and Yuanjiang.The central part of the 5 main basins including Jiangchuan,Shilin,Muding,Anning and Fumin,the east of the 3 major basins such as Jiangchuan,Xinjie and Songming,the northwest of Xundian basins and Nanhua basins,the central and northern parts of Songming basins,the southeastern part of Bajie basins and Fumin basins,the central and eastern part of Jijie basins,the central and southern part of Dongchuan basins,the southern and northern part of Yaoan basins,and the western part of Yuanmou basins.