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长江上游宜宾以上至通天河河段,因江中沙土呈黄色,出产金沙而称为金沙江。干流长2308公里,穿行于四川、西藏、云南3省区之间,流域面积50万平方公里。从观赏石资源角度看,金沙江观赏石资源最富聚的是四川宜宾市屏山县新市镇境内至宜宾这一段。这段金沙江长近200公里,江面相对宽阔,迂回曲折,因而形成大大小小几十个在当地称为“碛坝”的河滩。这些大大小小的碛坝,是观赏石宝库,贮藏着久远的历史年代遗留下来的观赏石资源。自上个世纪80年代起,短短20年间,一是基本建设毁灭性的沙石挖掘,二是玩石者过度的疯狂采集。这里的观赏石资源面临枯竭。
Yibin above the upper reaches of the Yangtze River to the section of Tongtianhe River, sand due to the river was yellow, the production of golden sands and called the Jinsha River. The main stream of 2308 kilometers long, walk in Sichuan, Tibet, Yunnan provinces and autonomous regions, the basin area of 500,000 square kilometers. From the perspective of ornamental stone resources, the most abundant gathering of Jinsha River ornamental stone resources is the section of Yibin within the new town of Ping Shan County, Yibin City, Sichuan Province. This section of the Jinsha River nearly 200 kilometers long, the river is relatively wide, twists and turns, resulting in the formation of dozens of large and small locally called “moraine dam” beach. These large and small moraine dam, is a treasure trove of ornamental stones, stored in the ancient history of the legacy of ornamental stone resources. Since the 1980s, in the short span of 20 years, one is the destructive excavation of gravel for the capital construction and the other is the excessive crazed collection by the playstone. Ornamental stone resources here are facing depletion.