| 1961—2010年青海省霜冻灾害变化特征及风险区划 |
| |
| 引用本文： | 严应存,周秉荣,陈国茜.1961—2010年青海省霜冻灾害变化特征及风险区划[J].气象科技,2015,43(5):986-991. |
| |
| 作者姓名： | 严应存 周秉荣 陈国茜 |
| |
| 作者单位： | 青海省气象科学研究所，西宁 810001,青海省气象科学研究所，西宁 810001,青海省气象科学研究所，西宁 810001 |
| |
| 摘 要： | 基于青海省历史日最低气温、青海省农作物种植总面积、农作物产量等要素，运用数理统计构建致灾因子危险性、暴露性和灾损敏感性指数，采用图表法和指数乘积法开展青海省霜冻灾害变化特征及风险区划。结果表明，青海省作物种植区均有霜冻灾害，中心集中在东部农业区的门源、大通、互助、湟源和湟中，柴达木盆地东部的德令哈、都兰和乌兰，以及贵南和共和等地；发生时段主要在4—9月，5月发生频率最高；年际间霜冻灾害呈波动增加趋势，但趋势不显著，年代际间霜冻灾害呈显著波动增加趋势；霜冻灾害高风险区主要分布在东北部的门源、互助、大通和祁连东部。
|
| 关 键 词： | 霜冻灾害 变化特征 风险区划 |
| 收稿时间： | 8/1/2014 12:00:00 AM |
| 修稿时间： | 2015/5/11 0:00:00 |
Variation Characteristics and Risk Regionalization of Frost Disasters in Qinghai Province |
| |
| Yan Yingcun,Zhou Bingrong and Chen Guoqian.Variation Characteristics and Risk Regionalization of Frost Disasters in Qinghai Province[J].Meteorological Science and Technology,2015,43(5):986-991. |
| |
| Authors: | Yan Yingcun Zhou Bingrong and Chen Guoqian |
| |
| Abstract: | In order to provide a basis for the deployment and countermeasures of disaster prevention and mitigation work in Qinghai Province, through analyzing the variation regularity and spatial distribution patterns of frost disasters from 1961 to 2010, based on the historical data of daily minimum temperature, total crop planting area, the yield of crops, etc., in Qinghai Province, the risk regionalization of frost disasters is carried out and the variation characteristics of frost disasters are analyzed by means of the graphics, exponential product method. The statistic method is used to build the hazard, exposure and sensitivity indexes of disaster inducing factors. The results show that all the crop planting areas in Qinghai Province are attacked by frost disasters, which are concentrated in Delingha, Dulan and Wulan counties in the eastern Qaidam basin, Menyuan, Datong, Huzhu and Huangzhong counties in the eastern agricultural area, and Guinan and Gonghe. Frost disasters happen mainly from April to September, and the frequency of occurrence reaches the highest in May. The inter annual variation of frost disasters exhibits an increasing trend, but not significant, while the inter decadal variation of frost disasters shows a significantly increasing trend. The high risk areas of frost disasters include Menyuan, Huzhu, Datong, the eastern Qilian in the northeast of Qinghai. |
| |
| Keywords: | frost disaster variation characteristic risk regionalization |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《气象科技》浏览原始摘要信息 |
| 点击此处可从《气象科技》下载免费的PDF全文 |
|
