Fuzzy Comprehensive Evaluation-Based Disaster Risk Assessment of Desertification in Horqin Sand Land, China

International Journal of Environmental Research and Public Health

Yongfang Wang²  Jiquan Zhang¹  Enliang Guo²  Zhongyi Sun² 

[1] School of Environment, Northeast Normal University, Changchun 130117, China;

关键词: Horqin Sand Land;    desertification;    natural disaster risk;    risk assessment;   

DOI  :  10.3390/ijerph120201703

来源: mdpi

【 摘 要 】

Desertification is a typical disaster risk event in which human settlements and living environments are destroyed. Desertification Disaster Risk Assessment can control and prevent the occurrence and development of desertification disasters and reduce their adverse influence on human society. This study presents the methodology and procedure for risk assessment and zoning of desertification disasters in Horqin Sand Land. Based on natural disaster risk theory and the desertification disaster formation mechanism, the Desertification Disaster Risk Index (DDRI) combined hazard, exposure, vulnerability and restorability factors and was developed mainly by using multi-source data and the fuzzy comprehensive evaluation method. The results showed that high risk and middle risk areas account for 28% and 23% of the study area, respectively. They are distributed with an “S” type in the study area. Low risk and very low risk areas account for 21% and 10% of the study area, respectively. They are distributed in the west-central and southwestern parts. Very high risk areas account for 18% of the study area and are distributed in the northeastern parts. The results can be used to know the desertification disaster risk level. It has important theoretical and practical significance to prevention and control of desertification in Horqin Sand Land and even in Northern China.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.