流域生态环境安全是保证水资源的关键。
Valley ecological environment safety is the key to the guarantee of water resources.
流域生态环境安全是确保水资源的关键。
Ecological and environmental safety is the key to ensuring water.
此研究对于如何安全利用采空区场地，保护矿区水资源、防止生态环境恶化有一定的参考价值。
This study provides a reference for safe utilizing the goaf site, protecting water resources in mining area and preventing deterioration of the ecological environment.
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