SCIENTIA GEOGRAPHICA SINICA ›› 2013, Vol. 33 ›› Issue (8): 957-964.doi: 10.13249/j.cnki.sgs.2013.08.957

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Spatial-temporal Evolution of Regional Eco-security Based on GIS-Markov Model—A Case Study of Ganjingzi District in Dalian, Liaoning Province

GENG WANG1,2(), Li-yan WANG2, Jia-li GONG2, Bai-ling SU2, Qiu-bo LIU2   

  1. 1.Center for Studies of Maine Economy and Sustainable Development of Liaoning Normal University, Dalian, Liaoning 116029,China;
    2. Urban and Environmental School of Liaoning Normal University, Dalian, Liaoning 116029,China
  • Received:2012-09-12 Revised:2013-04-06 Online:2013-08-20 Published:2013-08-20


In this article, Ganjingzi District of Dalian City in Liaoning Province was taken as an example. According to the pressure-state-response (P-S-R) model, regional eco-security evaluation model for Ganjingzi District was established. Based on the three period’s data of TM remote sensing images in 1990, 2000 and 2009 and the multi-source data quantified by GIS Grid, the database of the regional eco-security evaluation was constructed. Eco-security status of Ganjingzi District was assessed by comprehensive evaluation method. Meanwhile, according to the evaluation results, GIS-Markov model of the eco-security was built, and the rules of eco-security spatial-temporal evolution were studied by calculating transition matrix of regional ecological security state. The results showed as follows: 1) The eco-security index in Ganjingzi District had gradually improved from 1990 to 2009. The eco-security index of north and the central regions in Ganjingzi District changed largely from 1990 to 2000, and small change of ecological security occurred on the south and west regions. Except for the regions of Quanshui Street and Nanguanling Street, the eco-security conditions in Ganjingzi District had a significant improvement from 2000 to 2009; 2) Regional background played an important role in convergence process of the eco-security evolution. The possibility of the eco-security evolution in Ganjingzi District had been affected by its adjacent region. The adjacent region of higher level played a positive role in grade transition of eco-security, and the lower levels had a negative impact. The eco-security status in Ganjingzi District was affected by the adjacent region of higher level, and the areas of improvement increased from 1990 to 2000. During these yeas, the northern rural area in the region of Yingchengzi Street and western region of Gezhenpu Street were affected by lower level neighborhood, and its security status became worse. Except for the region of Quanshui Street and the junction of Yingchengzi Street and Hongqi Street, the eco-security had suffered deterioration by the impact of unsafe adjacent regions. From 2000 to 2009, the eco-security in Ganjingzi District was beginning to change and was less affected by the adjacent regions. GIS-Markov model provided the research ideas and methods in establishing the spatial-temporal evolution of regional eco-security. Moreover, the results could provide a scientific basis for regional development, ecological risk assessment and early warning in Ganjingzi District in the future.

Key words: eco-security, GIS-Markov, spatial-temporal evolution, Ganjingzi District in Dalian

CLC Number: 

  • X826