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Evaluation of Eco-Environmental Quality Based on Coupling of Gray-Clustering and 3S Method-A Case Study on Da’an, Jilin Province

TANG Jie, L Chuan, LI Zhao-yang, WANG Chen-ye, ZHANG Jing-cheng,LI Hai-yi   

  1. College of Environment and Resources, Jilin University, Changchun 13002,China
  • Received:2008-04-25 Revised:1900-01-01 Online:2008-11-26 Published:2008-11-26
  • Contact: TANG Jie

Abstract: Da’an region is one of the typical fragile ecological environmental regions in the western Songnen Plain. Based on the characteristics of ecologically fragile zone, the ecological environment quality of the Da’an City in Jilin Province was evaluated using gray clustering dynamic model. Multi-factor eco-environmental index system was established based on the spatial and non-spatial data which contain 21 index items according to the features of the agro-pastoral zigzag zone. The spatial information indexes using 3S technology were acquired by 1989, 2000 and 2004 remote sensing image data processing. The digital maps were produced by ArcMap. The grading results show that the eco-environmental quality of the township in Da’an City continues deteriorating in the year of 1989-2004. Nearly one-third of the township level is in Ⅴrange (poor) in 2004. Climatic factors, geological conditions, human resource development and utilization are closely related with the results.

Key words: eco-environmental, GIS, remote sensing, GPS gray clustering, Da’an City, Jilin Province

CLC Number: 

  • X171.1
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