PROGRESS IN GEOGRAPHY ›› 2012, Vol. 31 ›› Issue (3): 324-329.doi: 10.11820/dlkxjz.2012.03.007

Previous Articles     Next Articles

The Application of Attribute Recognition Model Based on Coefficient of Entropy to the Assessment of Seawater Intrusion

LI Miao1,2, XIA Jun1,3, LI Fulin4, MENG Dejuan1,2   

  1. 1. Key Laboratory ofWater Cycle & Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China;
    2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China;
    3. State Key Laboratory ofWater Resources and Hydropower Engineering Sciences, Wuhan University,Wuhan 430072, China;
    4.Water Conservancy Research Institute of Shandong Province, Jinan 250013, China
  • Received:2011-10-01 Revised:2012-02-01 Online:2012-03-25 Published:2012-03-25

Abstract: In this study, to solve the question of the one-sidedness and uncertainties when taking an assessment of seawater intrusion by using a single index (such as Cl- or mineralization), an attribute recognition model based on coefficient of entropy theory was built to take an assessment of seawater intrusion in coastal areas, and take a sample application of eight measured wells for seawater intrusion in plain north of Weifang. It is found that the intrusion was mild in most parts of plain north of Weifang where the water quality is brackish water, and more serious intrusion occurred in May, and changed back to mild intrusion in November in the eastern part of the study area (locations No.6 and No.8). There are two possible reasons responsible for this change. The first one is natural factors which include precipitation increases and sea level falls from May to November. The second reason is human activities mainly due to the reduction of groundwater pumping. Meanwhile, there are small differences in the rank of eight measurement wells for seawater intrusion in May and November. The sample application shows that this model is easy to understand and master, and that it provides a feasible and effective method for the assessment of seawater intrusion.

Key words: assessment, attribute recognition model, plain north ofWeifang City, seawater intrusion, weight coefficient by entropy