Journal of Resources and Ecology ›› 2017, Vol. 8 ›› Issue (3): 251-257.doi: 10.5814/j.issn.1674-764x.2017.03.005

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A New Approach for the Health Assessment of River Systems Based on Interconnected Water System Networks

ZHAO Junkai1,3, LI Lixian1, ZHANG Aishe1, LI Jiufa2,*, GUO Qiuxia1   

  1. 1. College of Tourism and Territorial Resources, Jiujiang Key Laboratory of Surveying and Maping on Land 3S Technology Application, Jiujiang University, Jiujiang, jiangxi 332005, China;
    2.Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China;
    3. Jiujiang Key Laboratory of Basin Management and Ecological Protection, Jiujiang, jiangxi 332005, China
  • Received:2016-05-18 Revised:2017-03-15 Online:2017-05-20 Published:2017-05-27
  • Contact: LI Jiufa, Email: jfli@re.ecnu.edu.cn
  • Supported by:
    National Natural Science Foundation of China (41361003); Science and Technology Project in Jiangxi Province Department of Education (GJJ14733).

Abstract: Interconnected river system networks is a national water conservancy strategy in China and focus of research. Here we discuss the classification system, material and energy exchange between rivers and lakes, various dynamic flows and ecological functions of river-lake interconnected relationships. We then propose a novel method for the health assessment of river systems based on interconnected water system networks. In a healthy river system there is “material and energy exchange” and it is the first and foremost relationship of material and energy exchange between rivers and lakes. There are unobstructed various “flows” between rivers and lakes including material flows (water, dissolved substances, sediments, organisms and contaminants), energy flows (water levels, flow and flow velocity), information flows (information generated with water flows, organisms and human activities) and value flows (shipping, power generation, drinking and irrigation). Under the influences of nature and human activity, various flows are connected by river-lake interconnection to carry material and energy exchange between rivers and lakes to achieve river-lake interactions. The material and energy exchange between rivers and lakes become one of the approaches and the direct driving forces of changes in river-lake interconnected relationships. The benignant changes in river-lake interconnected relationship tend to be in relatively steady state and in ideal dynamic balance.

Key words: classification system, ecological function, health assessment of river system, material and energy exchange, river-lake system, interconnected water system network