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Long-term water chemistry database, Little River Experimental Watershed, southeast Coastal Plain, United States

机译:长期水化学数据库,美国东南沿海平原,小河实验流域

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A water quality sampling program was initiated in 1974 by the U.S. Department of Agriculture Agricultural Research Service on the 334 km~2 Little River Experimental Watershed (LREW) near Tifton in south Georgia to monitor the effects of changing land use and agricultural practices over time and to support development of simulation models capable of predicting future impacts of agricultural land use and management changes. Stream samples were taken on a weekly or more frequent basis and were analyzed for chloride, ammonium nitrogen, nitrate plus nitrite nitrogen, total kjeldahl nitrogen, total phosphorus, and dissolved molybdate reactive phosphorus. Monitoring began in 1974 on the entire watershed and four nested subwatersheds, ranging in size from 16.7 to 114.9 km~2, and continues until present. Partial records of 7, 10, and 19 years exist for three additional subwatersheds. Suspended solids data are available for all eight subwatersheds for 1974-1978 and 1979-1981, three subwatersheds for 1982-1986, and all eight subwatersheds again beginning in the year 2000. The concentration and associated load data are being published on the LREW database anonymous ftp site.
机译:1974年,美国农业部农业研究服务部在乔治亚州南部Tifton附近的334 km〜2小河实验流域(LREW)上发起了一项水质​​采样计划,目的是监测土地使用和农业实践随时间变化的影响。支持模拟模型的开发,这些模型能够预测农业用地和管理方式变化的未来影响。每周或更频繁地采集流样品,并分析其中的氯化物,铵态氮,硝酸盐加上亚硝酸盐氮,凯氏定氮,总磷和溶解的钼酸盐反应性磷。监测始于1974年,对整个流域和四个嵌套子流域进行监测,范围从16.7到114.9 km〜2,一直持续到现在。对于另外三个子流域,存在7、10和19年的部分记录。 1974-1978年和1979-1981年的所有八个子集水区,1982-1986年的三个子集水区,以及所有八个子集水区的悬浮固体数据均可用。浓度和相关负荷数据正在LREW数据库中匿名发布。 ftp站点。

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