甘肃平凉市的旅游气候舒适度评价

利用甘肃省平凉市7县（区）气象观测站1961—2010年50a气象资料，采用温湿指数、风寒指数和着衣指数指标，对平凉7县（区）各月旅游气候舒适度进行了分析。结果显示，平凉市7县（区）旅游气候最舒适期为每年的5～9月，较舒适期在4月和10月，不舒适期静宁、庄浪、华亭为4个月，主要分布在冬季及秋末（1～2月、11—12月），崆峒、灵台、泾川、崇信为3个月，分布在冬季的1、2、12月。由于地理位置和海拔高度的不同，平凉旅游气候在东西南北方向上有着一定差异，在东西方向上差异尤其明显，一年中舒适度年指数自西向东呈升高趋势。

Evaluation of Tourism Climate Comfort Level in Pingliang of Gansu Province

Human comfort degree is a key indicator of the human settle environment and tourism resources evaluation. Based on the me- teorological data of 7 stations in Pingliang of Gansu Province from 1961 to 2010 , the climate comfort degree of each month in 7 stations was analyzed by using the temperature and humidity index （THI）, wind chill index （WCI） and index of clothing（ICL）. The results show that the most comfortable period of the tourism climate over the study area is from May to September which is the best time for tou- ting, and the climate is relatively comfortable in April and October. However, the uncomfortable period is different in 7 stations. There are 3 months（January, February and December） which are uncomfortable in Kongtong, Lingtai, Jingchuan, Chongxin, besides, the uncomfortable period of Jingning, Zhuanglang, Huating is mainly in winter and late fall（from January to February, November to De- cember）. Due to the differences of the geographical position and altitude, the tourism climate has a certain difference in east -west and north - south direction in Pingliang, especially in the east - west direction. In addition, the comfort degree index in a year shows an increasing trend from west to east.