论文部分内容阅读
黑龙江省是我国重要的商品粮生产基地,也是低温冷害发生比较频繁的地区之一,研究低温冷害发生的风险水平及其空间分布,是各级政府部门进行防灾减灾的重要依据。文中采用自然灾害风险指数法、层次分析法和加权综合评价法,在计算黑龙江省各县市低温冷害的危险性、暴露性和脆弱性的基础上,通过计算黑龙江省低温冷害风险指数LCDR Ii,对黑龙江省低温冷害进行风险评估与区划研究。研究结果表明:黑龙江省低温冷害高风险区主要集中分布于黑龙江省西北部漠河县和塔河县,这一地区应该成为黑龙江省防御低温冷害的重点;黑龙江省低温冷害中风险区零星分布于黑龙江省各个地区,这些地区承灾体的脆弱性较大,所以低温冷害风险较大;黑龙江省低温冷害低风险区主要成片分布于黑龙江省中部和西部地区,轻风险区主要分布于黑龙江省中西部地区、东部地区和南部地区,这些地区低温冷害发生风险较低。
Heilongjiang Province is one of the important commodity grain production bases in China. It is also one of the areas where cold damage occurs more frequently. Studying the risk level and its spatial distribution of cold damage is an important basis for disaster prevention and reduction at all levels of government. Based on the method of natural disaster risk index, AHP and weighted comprehensive evaluation, based on the calculation of the risk, exposure and vulnerability of chilling injury in all counties and cities in Heilongjiang Province, by calculating the risk index of low temperature chilling injury in Heilongjiang Province LCDR Ii, Risk Assessment and Zoning Study on Chilling Injury in Heilongjiang Province. The results show that the high risk areas of cold damage in Heilongjiang Province are mainly concentrated in Mohe County and Tahe County in the northwest of Heilongjiang Province. This area should be the focus of defense against cold damage in Heilongjiang Province. The risk area of cold damage in Heilongjiang Province is sporadically distributed in Heilongjiang Province In all regions of the province, the vulnerability of disaster-bearing bodies in these areas is relatively large, so the risks of low-temperature chilling damage are relatively high. The low-risk areas for chilling injury in Heilongjiang Province are mainly located in the central and western regions of Heilongjiang Province. The light-risk areas are mainly distributed in Heilongjiang Province In the western, eastern and southern regions, there is a lower risk of cold damage in these areas.