西藏尼洋河水质特征研究

Research on the Water Quality Characteristics of Nyang River in Tibet

论文主要研究尼洋河保护区水质的特征.采样断面5个,分别为:雪巴一桥(1号)、百巴镇(2号)、蓄巴一桥(3号)、折巴桥对岸(4号)、铁吊桥(5号).对5个断面的调查检测结果显示:各监测断面pH的变化规律不明显;溶解氧变化为2号溶解氧最低,3号最高;通过对不同断面的流速监测发现,3号断面的流速最大,2号断面的流速最低;4次测定有3次超出了地表Ⅱ类水质标准.

This papermainly studies the characteristics ofwater quality in Nyang River Reserve. The sampling sections are as follows: Xueba No.1Bridge (No.1),Baiba Town (No.2),XubaNo.1Bridge (No.3), the other side of Sheba Bridge (No.4) and Iron Suspension Bridge (No.5). The results of investigation and test on five sections show that the change of pH in each monitoring section is not obvious, the change of dissolved oxygen is the lowest in No.2, and the highest in No.3. Through the monitoring of the velocity in different sections, it is found that the velocity in Section 3 is the highest and that in Section 2 is the lowest.Three of the fourmeasurements exceeded the surface class IIwater qualitystandard.