| This article has been：Browse 1827Times Download 3546Times |
scan it! |
|
|
| DOI：10.13522/j.cnki.ggps.2019126 |
|
| Analysis and evaluation of Surface Water Quality in Heilongjiang Province |
|
LI Jiuying, PENG Yihao, LIU Zhenyang, WEI Qi
|
|
1. Heilongjiang Irrigation Drainage and Water Saving Technology Center, Harbin 150040, China; 2. College of Agricultural Engineering, Hohai University, Nanjing 210098, China
|
| Abstract: |
| 【Objective】We aimed at establishing Reasonable Management Strategies to Improve Irrigation Water Quality. 【Method】The spatial and temporal variation characteristics of irrigation water (Surface Water) quality indicators in Heilongjiang Province were analyzed by Office and ArcGIS software, based on 16 water quality monitoring indicators from 295 sites in Heilongjiang Province from May to August 2017, and the Surface Water Quality Evaluation Standard (GB 3838—2002) and Irrigation Water Quality Standard for Farmland (GB5084—2005). 【Result】 ①The main pollutants of irrigation water quality in Heilongjiang Province were organic pollutants (BOD5, COD and permanganate index) and non-point source pollutants (ammonia nitrogen, TN and TP), of which only 60.9%～76.7% and 68.6%～78.3% of the measured points could meet the class III standard. The performance of non-point source pollution indicators was poor, and the problem of excessive TN and TP indicators was serious. ②In terms of time change, with the development of growing season, the number of inferior water measurement points of organic and non-point source pollution indicators was increasing gradually, and this phenomenon was more obvious in TN and TP indicators. ③The high-risk areas of agricultural non-point source pollution indicators were mainly concentrated in Jiamusi and Qitaihe. The irrigation areas included Helihe irrigation area, Jinsha irrigation area, Sanhe irrigation area, Mengjiagang irrigation area and Wanjia irrigation area.【Conclusion】Irrigation water quality in Heilongjiang Province was mainly affected by agricultural non-point source pollution indicators, especially for TN and TP. Establishing reasonable water and fertilizer management strategy was an important way to improve irrigation water quality in Heilongjiang Province. |
| Key words: irrigation water; water quality assessment; eutrophication; non-point source pollution; spatial and temporal distribution |
|
|
