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首页> 外文期刊>California Agriculture >Local air pollutants threaten Lake tahoe's clarity
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Local air pollutants threaten Lake tahoe's clarity

机译：当地的空气污染物威胁着太浩湖的清晰度

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Lake Tahoe is a high-altitude (6,227 feet) lake located in the northern Sierra Nevada at the California-Nevada border. During the second half of the 20th century, the decline in Lake Tahoe's water clarity and degradation of the basin's air quality became major concerns. The loading of gaseous and particulate nitrogen, phosphorus and fine soil via direct atmospheric deposition into the lake has been implicated in its eutrophi-cation. Previous estimates suggest that atmospheric nitrogen deposition contributes half of the total nitrogen and a quarter of the total phosphorus loading to the lake, but the sources of the atmospheric pollutants remain unclear. In order to better understand the origins of atmospheric pollutants contributing to the decline inLake Tahoe's water clarity, we reviewed a series of studies performed by groups from the US. Department of Agriculture's Forest Service, UC Davis and the Desert Research Institute. Overall, the studies found that the pollutants most closely connected to the decline in Lake Tahoefs water quality originated largely from within the basin.
机译：太浩湖是位于加利福尼亚-内华达州边界内华达山脉北部的高海拔湖泊（6,227英尺）。在20世纪下半叶，太浩湖的水质下降和流域空气质量下降成为人们关注的主要问题。通过直接的大气沉积将气态和颗粒状的氮，磷和细土装载到湖泊中，这与湖泊富营养化有关。先前的估计表明，大气中的氮沉积占湖泊总氮的一半，磷的总负荷占四分之一，但大气污染物的来源仍不清楚。为了更好地了解造成塔霍湖水净度下降的大气污染物的来源，我们回顾了美国小组进行的一系列研究。加州大学戴维斯分校农业森林服务部和沙漠研究所。总体而言，研究发现，与太浩湖水质下降最密切相关的污染物主要来自流域内部。

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