GIS-Based Risk Assessment of Hail Disasters Affecting Cotton and Its Spatiotemporal Evolution in China
GIS-Based Risk Assessment of Hail Disasters Affecting Cotton and Its Spatiotemporal Evolution in China
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DOI：
10.3390/su8030218
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发表时间：
2016-02
期刊：
影响因子：
3.9
通讯作者：
Lin Wang;Guofang Hu;Y. Yue;Xinyue Ye;Min Li;Jintao Zhao;J. Wan
中科院分区：
文献类型：
--
作者：
Lin Wang;Guofang Hu;Y. Yue;Xinyue Ye;Min Li;Jintao Zhao;J. Wan
了解棉花冰雹灾害风险的时空分布格局对于减轻冰雹灾害、促进棉花种植的可持续发展至关重要。基于棉花冰雹灾害频率、时空暴露度、脆弱性等指标，在地理信息系统（GIS）的支持下，评估棉花冰雹灾害风险，分析1950—2009年中国大陆棉花冰雹灾害的时空格局和演变。得出以下结论：（1）所提出的风险评估方法揭示了县级棉花冰雹灾害风险的时空差异。 （2）除华北平原北部和新疆维吾尔自治区棉区外，我国棉花冰雹灾害风险较低。 1950年至2009年，棉花冰雹灾害风险逐渐加大。 （3）棉花冰雹灾害风险级别由大到小依次为蕾期、苗期、播种期、结铃期、吐絮期。不同棉花种植区风险最高的生长期有所不同。 (4)本文研究结果对于制定冰雹防灾减灾措施具有重要意义。
Understanding the spatiotemporal distribution pattern of hail disaster risk for cotton is crucial in mitigating hail disaster and promoting the sustainability of cotton farming. Based on such indexes as hail disaster frequency, spatiotemporal exposure, and vulnerability of cotton, we assess hail disaster risk for cotton, and analyze its spatiotemporal pattern and evolution in Mainland China from 1950 to 2009, supported by geographic information system (GIS). The following conclusions are drawn: (1) The proposed risk assessment method reveals the spatiotemporal difference of hail disaster risk for cotton at the county level. (2) Hail disaster risk for cotton is low in China, except for north of the North China Plain and the cotton-planting areas in Xinjiang Uygur Autonomous Region. From 1950 to 2009, hail disaster risk for cotton gradually increased. (3) The descending orders of hail disaster risk levels for cotton are bud stage, seedling stage, sowing and seeding stage, boll stage, and boll opening stage. The growth period with the highest risk varies across the cotton-planting areas. (4) The results of this paper are important for developing hail disaster prevention and reduction measures.