Knowledge Network Node

Surface Water Pollution in the Yangtze River Delta:Patterns and CountermeasuresEnglish Full Text

CHEN ZHENLOU, XU SHIYUAN, XU QIXIN, HU XUEFENG and YU LIZHONGState Key Laboratory for Estuarine and Coastal Sediment Dynamics and Morphodynamics, Department ofGeography, East China Normal University, Shanghai 200062 (China)

Abstract: On the basis of field investigations, observations and experimental data combined with environmentalmonitoring information, the status and the spatial and temporal patterns of surface water pollution over thepast ten years in the Yangtze River Delta have been assessed. The water quality of large rivers is still verygood but most of the medium-sized and small rivers have been very seriously polluted. The appearance ofblack and odorous conditions in rivers in the urban areas has increased due to serious pollution by organicmatter with consequent high oxygen demand. Annual increases in N and P concentrations in lakes haveaccelerated eutrophication. The water quality of rivers in small towns is rapidly deteriorating. The mainsources of surface water pollution include industrial and domestic sewage, animal manures, chemical fertilizersin farmland, and polluted sediments in rivers and lakes.Countermeasures against these sources of pollution are presented. Regional laws and regulations forprotection of surface waters and their enforcement are urgently required. A regional water environmentalmanagement agency should be established. The construction of sewagn treatment plants of varying capacitymust be accelerated to increase the proportion of sewage treated and to improve the quality of treatedeffluent. Animal wastes must be recycled effectively and efficiently, and the application rates of fertilizersand manures must be balanced with crop nutrient requirements to prevent diffuse pollution from agriculture.The comprehensive rehabilitation of medium-sized and small rivers should be intensified, and the delimitationand protection of the areas used as sources of drinking water should be strengthened.
  • Series:

    (D) Agriculture; (B) Chemistry/ Metallurgy/ Environment/ Mine Industry

  • Subject:

    Environment Science and Resources Utilization

  • Classification Code:

    X522

  • Mobile Reading
    Read on your phone instantly
    Step 1

    Scan QR Codes

    "Mobile CNKI-CNKI Express" App

    Step 2

    Open“CNKI Express”

    and click the scan icon in the upper left corner of the homepage.

    Step 3

    Scan QR Codes

    Read this article on your phone.

  • HTML
  • CAJ Download
  • PDF Download

Download the mobile appuse the app to scan this coderead the article.

Tips: Please download CAJViewer to view CAJ format full text.

Download: 251 Page: 111-120 Pagecount: 10 Size: 388k

Related Literature
  • Similar Article
  • Reader Recommendation
  • Associated Author