SCIENTIA GEOGRAPHICA SINICA ›› 2015, Vol. 35 ›› Issue (11): 1452-1459.doi: 10.13249/j.cnki.sgs.2015.011.1452

• Orginal Article • Previous Articles     Next Articles

Spatial and Temporal Differentiation of Ecological Vulnerability Under the Frequency of Natural Hazard Based on SRP Model: A Case Study in Chaoyang County

Yong-hua LI1(), Qiang FAN1,2, Xue WANG1, Jian-chao XI2, Shi-yang WANG1, Jun YANG1,3()   

  1. 1.Liaoning Normal University, Liaoning Key Laboratory of Physical Geography and Geomatics, Dalian, Liaoning 116029, China
    2. Liaoning Technical University, School of Geometrics, Fuxin, liaoning 123000, China
    3. Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences,Beijing 100101, China
  • Received:2014-10-21 Revised:2015-03-10 Online:2015-11-20 Published:2015-11-20

Abstract:

Based on the characteristics of ecological environment in Chaoyang county of Liaoning Province, this essay studies the ecological vulnerability within Chaoyang county in 2003, 2006 , 2009 and 2012 by utilizing SRP (Sensitivity-Recovery-Pressure) model with meteorological data such as rainfall, RS data and soil data, DEM(Digital Elevation model) data and so on to determine ecological pressure factor including the pressure of Population activity and economic activity, ecological sensitivity factor including the earth surface factor, meteorological factor and soil factor, ecological stability factor including landscape structure, ecological function and ecological energy , based on GIS. The results are as follows: 1) The ecological vulnerability in Chaoyang county is in decline in 2003, 2006 and 2009, and reverses in 2012. Among these four years, the area where the ecology is lightly vulnerable in 2006 and 2009 is decreasing by 15.99% and 10.86% respectively, compared with that in 2003 and 2006, while the area where the ecology is lightly, moderately, heavily and extremely vulnerable in 2006 and 2009 is on the increase at various paces, compared with that in 2003 and 2006 respectively; 2) In all of these four years the area where the ecology is seriously vulnerable is mainly located in such region where the industry is developed and highly populated, and where the elevation is quite high; 3) Victory village is the most vulnerable region in ecology, where the extremely(14.15%), heavily(10.26%) and moderately(8.84%) vulnerable areas are located most, while Qidaoling village is the less vulnerable region, with 6.42% is slightly vulnerable.

Key words: ecological vulnerability, SRP model, natural disaster, Chaoyang county

CLC Number: 

  • X171.1