Abstract:The emission characteristics of COD, TN, TP and NH3-N in Haihe River Basin which were discharged from three main kinds of rural non-point sources (NPS) including rural sewage, livestock and fertilizer loss were evaluated using pollution emission coefficient based on the national and provincial statistics in 2008, and the emission intensities and spatial distribution were analyzed. Total COD, TN, TP and NH3-N emission were 2435826, 3042079, 540568, 1798760 t/a, and emission intensities were 11.10, 13.97, 2.98, 8.28 t/(km2·a), respectively. The maximum NPS emission was from Hebei Province among the seven provinces in Haihe River Basin, and the rural sewage became the largest and top-priority controlling pollution sources among three kinds of NPS. Ziya River System was the largest receiving water of NPS pollutants among the nine river systems in Haihe River Basin. Tuhaimajia River System suffered from the largest NPS emission intensity and became the most heavily polluted river system, which was mainly resulted from the rural sewage discharged from Shandong Province. Moreover, the NPS pollutants emissions and emissions intensity were significantly regional distribution, the mountainous area presented a low pollution level and the plain area presented a high pollution levels.
邱斌, 李萍萍, 钟晨宇, 陈胜, 孙德智. 海河流域农村非点源污染现状及空间特征分析[J]. 中国环境科学, 2012, 32(3): 564-570.
QIU Bin, LI Ping-Ping, ZHONG Chen-Yu, CHEN Sheng, SUN De-Zhi. Characteristics and spatial distribution of the rural non-point source pollution in Haihe River Basin. CHINA ENVIRONMENTAL SCIENCECE, 2012, 32(3): 564-570.