岷江上游水电开发对环境的影响

岷江上游水力资源十分丰富，随着西部大开发的进行，它已成为水电开发的重点区域，干流及支流的电站建设加速进行。自源头至汶川上游河段，实行六级梯级开发方案。但由于岷江水电工程主要是涵洞引水式，原来奔腾的河流变成了地下暗流，使得岷江的多处河段变得干涸，河谷的自然生境和景观发生了很大的变化，原来的干旱河谷气候变得更加干旱。也使河流生物系统受到严重影响。作者在对长江上游考察的基础上对岷江上游水电开发现状及其对环境的影响进行了分析，提出应该进行流域统一规划，强化执法监督，水电开发与环境保护建设并重；加强上中下游统一管理，注重流域综合开发等建议。

Environmental Impact of Hydropower Development in the Upper Reaches of Minjiang River

With the great development of western China, the upper reaches of Minjiang River which is of abundant hydropower resources has become the key area of hydroelectric generation. Nowadays the hydropower stations along its main channel and tributories are being constructed with high speed.From the head to Wenchuan, six grades of cascade development scheme have been implemented. But some river segments have turned into undercurrent or dried up, which cause great change of local habitat, landscape and climate, seriously influencing the river biosystem. Based on the investigation and analysis on the situation of hydroelectric generation and its environmental impacts ; some suggestions are put forward.