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Drought risk analysis of maize under climate change based on natural disaster system theory in Southwest China
- Source :
- Acta Ecologica Sinica. 36:340-349
- Publication Year :
- 2016
- Publisher :
- Elsevier BV, 2016.
-
Abstract
- Agro-drought risk analysis is helpful for improving the ability of regional disaster management and reducing potential drought risk under climate change. In this paper, we use daily meteorological observations from 60 stations and maize yield data in Southwest China during the period from 1961 to 2012. Based on natural disaster risk theory, maize drought risk assessment model is established from four factors: hazard, exposure, vulnerability, drought prevention and mitigation, and maize drought risk is zoned and analyzed in Southwest China under climate change. The results show that under climate warming, the high and sub high risk zones are decreased in Yunnan Province and emerged in central and northwest Sichuan Province, the low and sub low risk zones are largely reduced in Sichuan Province, Guizhou Province and Chongqing City, and the other increasing zones are mainly moderate risk zones. In summary, maize drought risk mainly depends on the maize drought hazard; the maize drought risk increases in the north and decreases in most of south under climate warming in Southwest China. Enhancing maize drought risk management helps to reduce the potential risk to agricultural production in southwest China under climate change.
- Subjects :
- Risk analysis
010504 meteorology & atmospheric sciences
Agroforestry
fungi
Global warming
Vulnerability
food and beverages
Climate change
General Medicine
010502 geochemistry & geophysics
01 natural sciences
Hazard
Geography
parasitic diseases
Agricultural productivity
Natural disaster
China
0105 earth and related environmental sciences
Subjects
Details
- ISSN :
- 18722032
- Volume :
- 36
- Database :
- OpenAIRE
- Journal :
- Acta Ecologica Sinica
- Accession number :
- edsair.doi...........7f05fd644108f227422c5480edacbe62