The flow-stopping showed periodicity analysing from the hydro-data. It was the results of natural factors, so the flow-stopping now should not be considered as emblem of eco-environment worsening.
黄河源头断流有一定的周期性，是以自然因素为主影响的结果，不应把黄河源头的断流现象看成是黄河源区生态环境恶化的象征。
The flow-stopping showed periodicity analysing from the hydro-data. It was the results of natural factors, so the flow-stopping now should not be considered as emblem of eco-environment worsening.
黄河源头断流有一定的周期性，是以自然因素为主影响的结果，不应把黄河源头的断流现象看成是黄河源区生态环境恶化的象征。
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