4. The paper also estimate the environmental influences of the waterhead area, and provides water protection countermeasures for the area.
对李子园水源地可能产生的环境影响进行了分析，初步提出了水源地保护措施。
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5. So it is a important task of waterhead management that understanding the foundation of water pollution and preventing water from being polluted.
了解水污染源，防止水污染产生和进一步恶化是水源管理中的一项重要任务。
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6. The upper reservoir overflow dam of Yangjiang pumped storage power station shows the characteristics of high waterhead, narrowing river bed in dam site and steep slope.
7. The present paper tries to study through model experiments the law governing the waterflow in clay fractures and proposes the concept of the critical rising rate of the waterhead.
通过模型实验，研究粘土体裂缝中的水流规律，提出了临界水位上升速度的概念。
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8. The whole ecological benefit shows downtrend, especially the area of nutrient waterhead and water and soil benefit in forest get large, and on the contrary the forest area lessens.
9. The whole ecological benefit shows downtrend, especially the area of nutrient waterhead and water and soil benefit in forest get large, and on the contrary the forest area lessens.
