Water, as fundamental natural resources and strategic economic resources, is a controlling factor for ecologic environment.
水是基础性的自然资源和战略性的经济资源，是生态环境的控制性要素。
The sharp reduction of water and sediment discharges has a negative effect on the changes in the estuarine ecologic environment.
水沙的锐减对河口生态环境的变化有着负面影响。
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