摘要
为促进干旱区湖泊的可持续发展,以新疆博斯腾湖大湖区为研究靶区,选取影响湖泊水质的7个主要指标,应用基于熵权的改进密切值法分析研究区1991~2008、2010~2011年的水质动态。结果显示：研究区近20a的水质环境总体低于地表水国家Ⅰ级水质标准（GB3838-2002）;氨氮的熵权接近0.5,对水质动态变化影响最大,溶解氧的影响最弱,主要是研究区工业废水的排放量增加及化学氮肥的不合理施用导致其水质富营养化;研究时段内后10a的水质状况总体好于前10a,而前10a较后10a的水质稳定,尤以2004-2006年起伏最大。
For the sustainability of lakes in arid area, taking the open water region from Bosten Lake as a case study, its quality dynamic using modified intimate data method based on entropy authority is analyzed. In the analysis, seven major indicators about the quality from 1991 to 2011 but 2009 are selected. The result indicates that the quality of the open water region is worse than the first standard of GB3838-2002. NH3- N is such an important factor which influence the quality of the lake that its entropy authority adheres almost to 0.5. While the effect from DO is the weakest element. In recent 20 years, the quality from the first 10 years is worse than that from the second 10 years. Its main reason led to the water quality of eutrophication is that the discharge of industrial wastewater and the unreasonable application of chemical nitrogen fertilizer in the study area. The condition of 2004 is the best, and the worst of 2006.
出处
《黑龙江大学工程学报》
2015年第3期50-56,61,共8页
Journal of Engineering of Heilongjiang University
基金
新疆维吾尔自治区自然科学基金青年项目(2014211B015)
新疆师范高等专科学校资助项目(XJJY201323)
关键词
熵权
密切值法
水质动态
水质指标
博斯腾湖大湖区
entropy authority
intimate data method
water-quality dynamic
water-quality indicators
open water region of Bosten Lake
