福建省春种马铃薯寒冻害风险区划

发布时间：2018-07-29 07:18

【摘要】：为了探究福建春种马铃薯寒冻害风险分布情况,利用马铃薯春种区45个县(市)的历年气象、产量和农业经济资料,在分析马铃薯寒冻害危险性、脆弱性和防寒防冻能力的基础上,构建马铃薯寒冻害风险区划指标,应用层次分析法、熵权系数法、加权综合评价法等确定风险区划指标权重和风险指数,构建福建省马铃薯春种区寒冻害风险区划指标和模型,基于GIS技术对福建省春种马铃薯的寒冻害风险进行区划。结果表明:福建省春种马铃薯的寒冻害低风险区主要分布在低海拔区域,该区域适合春种马铃薯;中度寒冻害风险区主要分布在海拔中等的区域;重度以上的寒冻害风险区主要分布在鹫峰山区、武夷山区、戴云山区和博平岭山区的高海拔区域,其中海拔800m以上地域有严重寒冻害风险,不适宜早春种植马铃薯。在风险因素构成上,寒冻害致灾危险性在综合风险中起决定性作用,种植区防寒防冻能力仅能略微减轻寒冻害带来的风险。
[Abstract]:In order to investigate the risk distribution of freezing injury of spring potato in Fujian Province, the weather, yield and agricultural economic data of 45 counties (cities) in spring potato planting area were used to analyze the risk of freezing injury of potato. On the basis of vulnerability and ability of preventing cold and freezing, the index of risk regionalization of potato cold injury was constructed. The index weight and risk index of risk regionalization were determined by using AHP, entropy weight coefficient method and weighted comprehensive evaluation method, etc. The index and model of the risk regionalization of spring potato cold injury in Fujian Province were established, and the risk of cold injury of spring potato in Fujian Province was divided based on GIS technology. The results showed that the low risk area of spring potato was mainly distributed in the low altitude area, which was suitable for spring potato cultivation, and the moderate cold injury risk area was mainly distributed in the middle altitude area. The high altitude regions of Jiufeng Mountain, Wuyi Mountain, Dai Yunshan and Boping Mountains are the main risk areas of severe cold injury, among which the area above 800 m above sea level has the serious risk of freezing injury, so it is not suitable for potato planting in early spring. In the composition of risk factors, the risk caused by cold injury plays a decisive role in the comprehensive risk, and the ability of preventing cold and freezing in planting areas can only slightly reduce the risk of cold injury.
【作者单位】：福建师范大学地理科学学院;福建省气象服务中心;
【基金】：福建师范大学2016年“大学生创新创业训练计划(创新训练类)”项目(cxxl-2016129) 福建省自然科学基金项目(2012J01160)
【分类号】：S425;S532

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