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Assessment on agricultural drought risk based on variable fuzzy sets model
Alternative TitleAssessment on Agricultural Drought Risk Based on Variable Fuzzy Sets Model
Zhang Dan1; Wang Guoli1; Zhou Huicheng1
2011
Source PublicationCHINESE GEOGRAPHICAL SCIENCE
ISSN1002-0063
Volume21Issue:2Pages:167-175
AbstractDrought is one of the major natural disasters causing huge agricultural losses annually. Regional agricultural drought risk assessment has great significance for reducing regional disaster and agricultural drought losses. Based on the fuzzy characteristics of agricultural drought risk, variable fuzzy sets model was used for comprehensively assessing agricultural drought risk of Liaoning Province in China. A multi-layers and multi-indices assessment model was established according to variable fuzzy sets theory, and agricultural drought risk of all 14 prefecture-level cities was respectively estimated in terms of dangerousness, vulnerability, exposure and drought-resistibility. By calculating the combination weights of four drought risk factors, agricultural drought risk grade of each city was obtained. Based on the assessment results, the spatial distribution maps of agricultural drought risk were drawn. The results shows that eastern cities have lower drought dangerousness than western cities in Liaoning Province totally. Most cities are located in low drought vulnerability region and high drought exposure region. Because of frequent and severe drought since 2000, most cities are located in lower drought-resistibility region. Comprehensive agricultural drought risk presents apparent spatial characteristics, escalating from the east to the west. Drought dangerousness is the most important factor influencing comprehensive agricultural drought risk. Through the spatial distribution maps of drought risk, decision makers could find out drought situation and make decisions on drought resistance conveniently.
Other AbstractDrought is one of the major natural disasters causing huge agricultural losses annually. Regional agricultural drought risk assessment has great significance for reducing regional disaster and agricultural drought losses. Based on the fuzzy characteristics of agricultural drought risk, variable fuzzy sets model was used for comprehensively assessing agricultural drought risk of Liaoning Province in China. A multi-layers and multi-indices assessment model was estab-lished according to variable fuzzy sets theory, and agricultural drought risk of all 14 prefecture-level cities was respec-tively estimated in terms of dangerousness, vulnerability, exposure and drought-resistibility. By calculating the combi-nation weights of four drought risk factors, agricultural drought risk grade of each city was obtained. Based on the as-sessment results, the spatial distribution maps of agricultural drought risk were drawn. The results shows that eastern cities have lower drought dangerousness than western cities in Liaoning Province totally. Most cities are located in low drought vulnerability region and high drought exposure region. Because of frequent and severe drought since 2000, most cities are located in lower drought-resistibility region. Comprehensive agricultural drought risk presents apparent spatial characteristics, escalating from the east to the west. Drought dangerousness is the most important factor influencing comprehensive agricultural drought risk. Through the spatial distribution maps of drought risk, decision makers could find out drought situation and make decisions on drought resistance conveniently.
KeywordNEBRASKA variable fuzzy sets relative membership degree agricultural drought risk risk assessment Liaoning Province
Indexed ByCSCD
Language英语
Funding Project[Key Program of National Key Technology R & D Program of China]
CSCD IDCSCD:4155121
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/148004
Collection中国科学院金属研究所
Affiliation1.大连大学
2.中国科学院金属研究所
Recommended Citation
GB/T 7714
Zhang Dan,Wang Guoli,Zhou Huicheng. Assessment on agricultural drought risk based on variable fuzzy sets model[J]. CHINESE GEOGRAPHICAL SCIENCE,2011,21(2):167-175.
APA Zhang Dan,Wang Guoli,&Zhou Huicheng.(2011).Assessment on agricultural drought risk based on variable fuzzy sets model.CHINESE GEOGRAPHICAL SCIENCE,21(2),167-175.
MLA Zhang Dan,et al."Assessment on agricultural drought risk based on variable fuzzy sets model".CHINESE GEOGRAPHICAL SCIENCE 21.2(2011):167-175.
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