近30年来黄河水质变化趋势及原因分析
A STUDY ON WATER-QUALITY TREND IN THE YELLOW RIVER SYSTEM FROM 1960'S TO 1960'S
-
摘要: 根据我国水利部水文年鉴黄河监测站及全球水质监测计划(GEms/WATER)中国济南站的水化学资料,对黄河流域44个主要水文站自六十年代以来河水水质进行了分析研究,结果发现黄河流域河水各主要离子及离子总量有缓慢增长趋势.对此,我们从农田灌溉回水对黄河水质的影响、从灌溉用水量与黄河水质变化的相关性、以及从黄河水质年际变化趋势和黄河断流天数年际变化趋势的比较等诸方面进行了研究,提出了我们对黄河水质变化趋势的原因的认识.Abstract: The water quality data of the Yellow river system from the 1960's to the 1990's were studied. The results showed that the ion concentrationg trend happened in the Yellow river system, which could be related to the increasing of irragation water. The total ion content of the river water increasde due to the high-concentration of irrigation water in the farmalnd and its washing effect on the soil.
-
Key words:
- Chinese river /
- the Yellow river /
- river water quality change
-
-

计量
- 文章访问数: 981
- HTML全文浏览数: 981
- PDF下载数: 482
- 施引文献: 0