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本文利用西藏38个气象站点的观测资料计算1980-2014年的风效指数和温湿指数,进行聚类分析,结合旅游区景观特征及行政区划等因素对西藏旅游景点进行区划,使用风效指数、温湿指数及空气含氧量指标对区划后的旅游区进行气候条件评价和趋势分析.研究表明:西藏旅游资源可分为6个区域,各区风效指数、温湿指数的空间分布呈现出自东南向西北递减的规律,东部地区生物气温相对舒适,适宜旅游的时段为3-10月,而西部地区生物气温较低,适宜旅游的时段为5-9月.逐月含氧量呈抛物线状的变化,最高值出现在8月,最低值在1月.藏东南区域含氧量相对较高,常年在60%以上,部分区域在70%以上.近年来,西藏各地气候正在向更为温暖、舒适的方向发展,西藏年风效指数和年温湿指数呈显著的线性增长趋势,增幅分别为21.79·(10a)-1、0.32·(10a)-1.与过去30 a相比,雅鲁藏布江流域及西藏东部部分地区近5 a的旅游适宜期延长了1~2个月.
Based on the observation data of 38 meteorological stations in Tibet, this paper calculates the wind-cooling efficiency index and temperature-humidity index from 1980 to 2014, conducts cluster analysis and divides the tourist attractions in Tibet according to the landscape characteristics and administrative divisions of tourist attractions. , Temperature and humidity index and air oxygen content indicators of the tourist area after the division of climate conditions assessment and trend analysis.The study shows that: Tibet’s tourism resources can be divided into six regions, the district wind efficiency index, the temperature and humidity index of the spatial distribution of The law of decreasing from southeast to northwest is comparatively comfortable in the eastern region, and the suitable time for travel is from March to October, while the temperature in the western region is low, suitable for traveling from May to September. The monthly oxygen content is parabolic The highest value appeared in August and the lowest value was in January.The oxygen content in southeastern Tibet was relatively high, with a perennial above 60% and above 70% in some areas.In recent years, the climate around Tibet has been getting warmer , And the comfortable direction of development, annual wind index and annual temperature and humidity index of Tibet showed a significant linear growth trend, with the increase rates of 21.79 · (10a) -1,0.32 · (10a) -1 respectively. Compared with the past 30 years, the Yarlung Zangbo River Watershed and West Travel appropriate in some areas of the eastern extension of nearly 5 a 1 to 2 months.