九寨沟,因为内有九个寨而得名.位于四川西北部的阿坝藏族,羌族自治州九寨沟县境内.地处岷山山脉南段朵尔纳峰北麓,是长江水系嘉陵江源头一条支沟,海拨2000--3000米.九寨沟属高原湿润气候,山顶终年积雪. 春天气温较低,且变化较大,有冻土及残雪. 夏天气温回升较快且稳定,平均在19度--22度之间,但夜晚较凉,宜备薄毛衣. 秋天天高气爽,温度宜人,但昼夜温差较大,须备厚毛衣. 冬天寒冷积雪. 九寨沟年降雨少而集中,7-8月是典型的雨季.九寨沟春天妩媚,仲夏绚丽,深秋浓艳,隆冬神奇,四季美景各具神韵.春未至秋初游客最多. 十月份九寨沟的深秋是最绚烂的,山坡树木的树叶,除绿色以外,还呈现出金黄,火红等色彩,缤纷艳丽,倒映在大大小小的海子里,湖山同色,十分迷人. 也有游客偏爱安祥静谧的冬天,食宿站点关闭,山中人迹罕至,寂如天籁,海子,飞瀑,流泉冰冻雪封,别有风情.      
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