The effect of water quality changes on the desalting system of chemical water treatment at Beijing Yanshan Petrochemical Co.

论述了水质改变对北京燕山石油化工有限公司化学水处理装置除盐系统的影响。

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When land use patterns changed, changes in soil quality were embodied in content of organic matter, soil water holding and supplying capacity, soil structure and soil microbial characteristics.

在土地利用方式变化过程中，土壤质量变化体现在有机质含量、土壤供持水能力、土壤结构状况和土壤微生物特性的变化上。

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Some of this water may be returned to the original source with changes in the quantity and quality of the water, but some may be used consumptively.

这种水有些经过水量和水质的处理，重新回到原来的水源地，有一些则被消耗掉了。

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Even in areas with no nearby oil and gas drilling, the water quality in some aquifers changes naturally, groundwater experts say.

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Carbon emission contributes to global warming and climate changes affecting our water supply and quality.

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These changes are making water supply and quality more difficult to obtain, affecting runoff and soil moisture, increasing water temperatures, decreasing snowpack and lake and river ice, threatening fish and aquatic species, and allowing saltwater intrusion and sea level rise.

FORBES: Water Risk Threatens Businesses, National Security