Research On Evaluation Of Climate Comfort Dgree Of Tourist Destinations Under The Background Of Climate Change

Climate change has become a universally accepted fact,and as a climate-dependent tourism industry,climate change means that tourism development will also be affected.Leshan,Mount Emei and Dujiangyan are excellent tourist cities and important tourist destinations in Sichuan.Tourism is an important pillar industry.For the past 40 years(1979-2018),the climate change characteristics of the three study areas of Leshan Shizhong District,Mount Emei and Dujiangyan were analyzed by Mann-Kendall test.The correlation analysis of climate comfort and passenger flow was carried out by regression analysis method by using temperature and humidity index,wind efficiency index,clothing index and comprehensive climate comfort evaluation model.The following conclusions were drawn from the study:(1)The analysis of the characteristics of climate change in the study area in the past 40 years(1979-2018)shows that the average temperature in each age of the three places has shown an obvious upward trend in the last 40 years: Dujiangyan has the largest temperature rise(1.4?),the middle area of Leshan(1.1?),and Mount Emei has the smallest(0.8?).while the average precipitation in each of the three regions decreased slightly: Mount Emei decreased the most(10.3 mm),leshan city in the middle(7.6 mm),and dujiangyan the smallest(2.3 mm).The average relative humidity in the central district of Leshan and Dujiangyan showed a downward trend,while Mount Emei showed an upward trend.The average values of Leshan Shizhong District,Mount Emei and Dujiangyan are as follows: Mount Emei(85.8%)> Dujiangyan(79.2%)> Leshan Shizhong District(79%).The extreme difference of average relative humidity in Leshan Shizhong District,Mount Emei and Dujiangyan is from big to small: Dujiangyan(13%)> Leshan Shizhong District(11.4%)> Mount Emei(6.2%),which indicates that the relative humidity fluctuates greatly in Dujiangyan.In the past 40 years,the temperature of Leshan Central District,Dujiangyan and Mount Emei has shown a trend of warming except for the four seasons,and the precipitation in winter has shown a downward trend.The changes of precipitation and relative humidity and relative humidity in spring,summer and autumn are complicated,and the changes of relative humidity in winter are different.(2)The results of the Mann-Kendall test show that the average annual temperature mutation point in Leshan and Dujiangyan in the past 40 years is 2000,the temperature mutation point in Mount Emei is 1997,the average annual precipitation in all three regions is not abrupt,the average annual relative humidity change in Leshan and Mount Emei is not abrupt,and the relative humidity mutation point in Dujiang Weir is 1997.The average annual temperature of the three places after the mutation showed an upward trend: Leshan Shizhong District(0.9?),Mount Emei(0.5?)and Dujiangyan(0.9?),while the average annual precipitation decreased slightly: Leshan Shizhong District(9.1 mm),Mount Emei(18.6 mm)and Dujiangyan(3.4 mm),and Leshan Shizhong District and Dujiangyan(3.9%)and 4.7% respectively.(3)The results of climate comfort evaluation show that the annual change trend of temperature and humidity index in Leshan Central District,Mount Emei and Dujiangyan is basically the same,and the change curve is inverted "U" shape.During the year,the wind efficiency index of the three places showed a wide "U" zigzag distribution.During the three years,the trend of clothing index was "wide U shape ".The change of comprehensive climate comfort in Leshan and Dujiangyan is "M" type,and the comprehensive climate comfort in Mount Emei is inverted " U" type.The number of comfortable days and the number of more comfortable days are classified as "suitable tour period ",the suitable tour period of Leshan Shizhong District and Dujiangyan is as long as 9 months,and the suitable tour period of Mount Emei is 3 months in total.Over the past 40 years,climate change has had a significant impact on climate comfort in all three places.In the 2110 s,the number of comfortable days increased by 1.5 days,1.4 days and 8.2 days,respectively,compared with that of Leshan Shizhong District,Mount Emei and Dujiangyan in the 1980s;the number of more comfortable days decreased by 9.1 days in Leshan Shizhong District and Dujiangyan City,and increased by 17.5 days in Mount Emei.After the sudden change of climate,the proportion of comfortable days in Leshan Shizhong District,Mount Emei and Dujiangyan increased by 1%,0.3% and 2.3%,respectively;the proportion of more comfortable days increased by 4.6% in Mount Emei,and decreased by 1.3% and 1.7% in Leshan Shizhong District and Dujiangyan,respectively.(4)The correlation analysis of climate comfort and passenger flow shows that the passenger flow between Leshan Giant Buddha Scenic spot and Mount Emei Scenic spot is positively correlated with the temperature and humidity index,negatively correlated with the wind efficiency index and clothing index.