water-quality deterioration

Because of the double influence of natural and artificial factors, the geological environmental deterioration, such as groundwater level lowering and lake water pollution, the lake water fall scenery in Jiuzhaigou Ravine has suffered the destruction to varying degree.

九寨沟风景名胜区受自然因素和人为因素的叠加影响，产生地下水位下降、湖水污染等环境恶化问题，使湖泊瀑布景观遭到不同程度的破坏。

Due to the deterioration of water environment, corrosion of steel sluice gate becomes very serious.

水环境的恶化,使水工钢闸门腐蚀加重,传统的防腐工艺保护效果下降.

Water shortage and deterioration of water environment become the constraint factors to the urbanization and social development.

水资源匮缺和水环境恶化已成为制约城市化进程和社会进步的因素。

The potential problems of water environment are deterioration of terrestrial ecological environment and poor in water resources.

沱江流域水环境潜在问题有陆生生态恶化和水资源贫乏两大难题。

The flood, the drought and the deterioration of the water environment are the three problems faced at present.

洪涝、干旱、水环境恶化是目前面临的三大问题。