布2美国环保署公

    食品伙伴网讯据美国环保署消息，美国近日美国环保署发表报告称，环保全美约21%的美国淄博家家悦超市河流与小溪水质优良，23%的环保水质一般，55%的美国河流和小溪水质不佳。

    这份报告名为《2008-2009全国河流和小溪评估》。环保报告显示，美国美国西部地区水体水质较好，环保约有42%的美国淄博家家悦超市河流和小溪水质优良，而在东部高地、环保平原和低地地区，美国水质较好的环保河流和小溪的比例分别为17%和16%。

    部分原文报道如下：

    Biological condition is 美国the most comprehensive indicator of water body health: when the biology of a stream is healthy, the chemical and physical components of the stream are also typically in good condition. Twenty-one percent of the nation's river and stream length is in good biological condition, 23% is in fair condition, and 55% is in poor condition, based on a robust, commonly used index that combines different measures of the condition of aquatic benthic macroinvertebrates （aquatic insects and other creatures such as crayfish）。 Of the three major climatic regions （Eastern Highlands,环保 Plains and Lowlands, and West） discussed in this report, the West is in the best biological condition, with 42% of river and stream length in good condition. In the Eastern Highlands, 17% of river and stream length is in good condition; in the Plains and Lowlands, 16% is rated in good condition （Figure 1）。

    原文链接：<http://water.epa.gov/type/rsl/monitoring/riverssurvey/>