农业环境科学学报Issue(4)：769-775,7.DOI:10.11654/jaes.2015.04.023
松花江流域营养盐的空间分布及污染等级评价
Spatial Distribution and Pollution Level Evaluation of Nutrients in the Songhua River Basin
摘要
Abstract
In this research, 122 samples were obtained from the Songhua River Basin to investigate spatial distribution and pollution of nutri-ents in river water using the comprehensive pollution index method in combination with the results of the 2-year field survey of aquatic e-cosystems from 2013 to 2014. The results showed that the percentages of the excellent, good, moderate, poor and terrible grades of nutrient assessment were respectively 10.66%, 15.57%, 20.49%, 28.69%and 24.59%. The lowest scores of nutrient assessment were found in the Nenjiang River, the Mudan River, the Songnen Plain, the Sanjiang Plain and the Second Songhua River Basin. Nutrient pollution was less in the tributaries than in the main streams. The pollution of the nutrients in river water was in order of the main stream of the Songhua River﹥the Second Songhua River﹥the Mudan River﹥the Nen River. The three nutrient indicators(TN, TP and NH3-H)were significantly different. The assessment method based on grades divided by the same standards was feasible. Land use had profound impacts on nutrient pollution in river water, especially the non-point source pollution of agriculture that affected nitrogenous pollution more significantly.关键词
松花江流域/营养盐/空间分布/土地利用Key words
the Songhua River Basin/nutrient/spatial distribution/land use分类
资源环境引用本文复制引用
焦珂伟,李凤祥,周启星..松花江流域营养盐的空间分布及污染等级评价[J].农业环境科学学报,2015,(4):769-775,7.基金项目
国家水体污染控制与治理科技重大专项 （）
