长江中下游地区十大湖泊气候舒适度时空分布特征

The Spatio-temporal Distribution Characteristics of Climate Comfort Degree in Ten Major Lakes in the Middle and Lower Reaches of the Yangtze River

以长江中下游地区15个气象站1981-2010年的气象数据为基础资料,采用综合气候舒适度评价模型对长江中下游地区具有代表性的十大湖泊的气候舒适度进行评价,并对气候舒适度在不同时间和空间的分布特征进行研究。结果表明,长江中下游地区十大湖泊气候舒适度普遍较高,舒适期一般分布在4-5月和9-10月,不舒适期分布在7-8月;春、秋两季气候舒适度明显高于冬、夏两季;全年气候舒适度指数变化趋势呈M形。长江中下游地区十大湖泊气候舒适度随经度降低而呈下降趋势;随纬度降低呈上升趋势;随海拔升高呈上升趋势。长江流域下游湖泊的气候舒适度略高于中游湖泊。

Taking the 15 meteorological stations during 1981 to 2010 meteorological data in the Yangtze River area as the basic data,climate comfort degree of ten big lakes that are representative the middle and lower reaches of Yangtze River in China was evaluated using a comprehensive climate comfort evaluation model,and the distribution characteristics of climate comfort in different time and space were also studied.The results show that,the comfort degree of the ten lakes in the middle and lower reaches of Yangtze River is generally higher,and the comfort period is generally distributed in April to May and September to October,and the discomfort period is distributed in July to August.The climate comfort degree of spring and autumn is obviously higher than that of winter and summer.The variation trend of climate comfort index present ＂M＂ in the whole year.The climate comfort degree of the ten lakes in the middle and lower reaches of the Yangtze River decrease with longitude,and increase with the decrease of latitude,and increased with the elevation.The climate comfort of the lakes in the lower reaches of the Yangtze River is slightly higher than that in the middle reaches.