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JOURNAL OF DESERT RESEARCH  2013, Vol. 33 Issue (1): 302-307    DOI: 10.7522/j.issn.1000-694X.2013.00041
Ecology and Economics     
Study on Evolution of Eco-environment Vulnerability in Minqin Country of Gansu Province Based on GIS
LI Chuan-hua, ZHAO Jun
College of Geography and Environment Science, Northwest Normal University, Lanzhou 730070, China
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Abstract  

The eco-environment vulnerability in Minqin County, Gansu Province of China was studied by making use of landscape pattern indices and ecosystem sensitivity indices. A model was developed based on two landscape pattern indices (reciprocal value of patch fractal dimension and patch isolation) and three ecosystem sensitivity indices (sensitivity of aeolian desertification, sensitivity of soil salinization, and sensitivity of soil erosion). Combining these two types of indices, we evaluated the evolution of eco-environment vulnerability in Minqin County during 1986-2006 through GIS analysis. Results showed that the eco-environment in Minqin County deteriorated with a rapidly accelerating trend from 1986 to 2006; it deteriorated gradually from 1986 to 2000 and there was rarely eco-environmental improvement phenomenon, indicating that the repairing ability of the natural ecology was limited and there were few human improvement measurements; the eco-environment deteriorated in a wave state from 2000 to 2006 and the eco-environment improved in some areas, indicating the active action of human activities.

Key words:  eco-environment      evolution      landscape pattern      vulnerability      Minqin County     
Received:  24 September 2012      Published:  20 January 2013
ZTFLH:  X826  
Articles by authors
LI Chuan-hua
ZHAO Jun

Cite this article: 

LI Chuan-hua, ZHAO Jun. Study on Evolution of Eco-environment Vulnerability in Minqin Country of Gansu Province Based on GIS. JOURNAL OF DESERT RESEARCH, 2013, 33(1): 302-307.

URL: 

http://www.desert.ac.cn/EN/10.7522/j.issn.1000-694X.2013.00041     OR     http://www.desert.ac.cn/EN/Y2013/V33/I1/302

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