三峡坝区及近坝区地理气候的边际特征研究进展

Marginal Characteristics of Geography and Climate in Three Gorges Dam Area and Near Dam Area

通过文献调研,归纳综述了三峡坝区和近坝区在地理气候、生态环境等多维度的空间边际特征:(1)位于我国南北过渡带秦巴山地南麓,处在中亚热带和北亚热带的交界区;(2)位于长江中上游过渡区和我国东西地形阶梯过渡区,具有东西部地理、气候“分水岭”特征和极端天气气候的坡(谷)地效应;(3)生态系统和天气系统的东西“廊道效应”;(4)地理、气候、生态的垂直分异显著;(5)局地气候变化和生态响应敏感区。

Through literature research, this paper summarizes the spatial marginal characteristics of the Three Gorges dam area and the near dam area in terms of geography, climate, ecological environment and other dimensions. The study found that:(1) it is located at the southern foot of Qinba Mountain in the North-South transition zone of China, at the junction of the middle subtropical zone and the north subtropical zone;(2) Located in the transitional area of the middle and upper reaches of the Yangtze River and the transitional area of the terrain ladder between the East and the west of China, it has the characteristics of the geographical and climatic "watershed" between the East and the West and the slope(Valley) effect of extreme weather and climate;(3) It has the East-West "corridor effect" of ecosystem and weather system;(4) The vertical differentiation of geography, climate and ecology is significant;(5) It belongs to land climate change and ecological response sensitive areas.