推荐回答(2个)
岷江,大渡河,青衣江 ,是乐山的三江。在乐山大佛面前回合,其实是两条先汇合,然后大佛面前和第三条汇合。
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三江知识:
岷江:岷江(Min River 亦作Min Jiang)是长江水量最大的支流,发源于岷山南麓,全长1279千米,流域面积133,500平方公里,水量丰富,年均径流量900多亿立方米,为黄河的两倍多,水力资源蕴藏量占长江水系的1/5,沿途汇入黑水河、杂谷脑河、大渡河、马边河等重要支流,在宜宾汇入长江。岷江上有著名的战国修建的都江堰,是滋润成都平原的重要水利工程,金沙江缺乏足够了解,因此在古代相当长的时期内岷江都被误认作长江正源。2013年12月,中国科学院遥感与数字地球研究所利用卫星遥感技术确定了长江水量最大的一级支流岷江,其最上源流名为玛尔曲,源头位于青海省果洛藏族自治州达日县满掌乡境内的莫坝东山西麓,以新发现的源头为起点,岷江的长度为1279千米。
大渡河:大渡河(藏语:rgyal rong rgyal mo rngul chu),位于中华人民共和国四川省中西部,发源于青海省玉树藏族自治州境内巴颜喀拉山南麓,向南入四川省分别流经阿坝藏族羌族自治州、甘孜藏族自治州、雅安市、凉山彝族自治州、乐山市,长1155公里。主源大金川发源于青海、四川边境的果洛山,在四川丹巴县与小金川汇合后称大渡河,至乐山市入岷江,长909公里,流域面积82,700平方公里,其中在金口河段的金口大峡谷最为著名,被誉为“世界最具魅力的天然公园”。
大渡河是中国岷江最大支流,是长江的二级支流。位于四川省西部。古称沫水。大渡河为高山峡谷型河流,地势险峻,水流汹涌,自古有“大渡天险”之说。水流丰沛稳定。大渡河发源于青海省,干流全长1062公里,流域面积77400平方公里,天然落差4177米,年径流量488亿立方米,水能资源蕴藏量3373万千瓦,可开发容量约2460万千瓦。大渡河干流目前规划建设22座梯级发电站,总装机容量2340万千瓦时,总发电量1019亿千瓦时,大渡河是我国重要的水电基地。
青衣江:青衣江在魏晋南北朝以前名叫青衣水,又称沫水、大渡水,以青衣羌国而得名。流域内历史文化底蕴深厚,有夹江千佛岩等许多文化遗迹留存,旅游资源丰富,有蜂桶寨自然保护区、上里古镇等旅游景点,流域内水力资源丰富,有玉溪河引水灌溉、龟都府水电站等水利设施。青衣江,长江支流岷江支流大渡河支流,主源为宝兴河,发源于邛崃山脉巴朗山与夹金山之间的蜀西营(海拔高程4930米),流经宝兴在飞仙关处与天全河、荥经河汇合后,始称青衣江,经雅安、洪雅、夹江于乐山草鞋渡处汇入大渡河。
因金沙江、岷江在此汇合,长江。
三江口位于中国四川省中南部,因金沙江,岷江在此汇合,长江至此始称长江,故宜宾也被称为万里长江第一城。
三江口区域定位为中央商务区CBD,包含商贸金融,文化娱乐,大型会议会展,高档酒店,旅游接待,集中商业,居住等功能,其建设对加快宜宾城市发展,提升宜宾对外开放形象,树立宜宾市民对城市的信心具有重要意义。
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