除具有巨大的经济效益外，对缓解黄河下游的用水和改善上游的生态环境也有明显的社会和生态效益。
Except the tremendous economical benefit, it can also improve the ecological environment of upstream and mitigate water source in downstream.
黄河上游水电的效益没有公平公正的反映。
Secondly, the effect of hydropower of the Upper Yellow River is not reflected fairly.
利用该系统对密云水库上游密云县境内水源保护林的水源涵养与防止土壤侵蚀效益进行了定量评价。
A quantitative evaluation of beneficial result in conserving water and protecting soil erosion of froest in the upper stream of Miyun reservoir is produced from the information system.
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