雨涝灾害对农户生产要素投入行为的影响——基于湖北农村固定观察点数据的分析
发布时间:2018-01-17 03:07
本文关键词:雨涝灾害对农户生产要素投入行为的影响——基于湖北农村固定观察点数据的分析 出处:《资源科学》2017年09期 论文类型:期刊论文
【摘要】:本文基于2003-2011年湖北省农村固定观察点数据及气象数据,运用"Z指数"法核算各气象站点的雨涝发生等级,并对其特征进行分析。依据"Z指数"计算结果将年份划分为正常年份与雨涝灾害年份,运用计量经济学方法定量分析雨涝灾害对水稻种植户要素投入行为的影响。研究发现,2003-2011年间湖北偏涝少于大涝,极涝并未出现,大涝、偏涝发生区域较为集中。此外,稻农生产要素投入在正常年和雨涝灾害年间存在显著差异。雨涝灾害的发生对中间投入、劳动力投入具有显著的正向影响,且对后者影响程度最大。另外,分位数回归表明,随着分位数的提高,雨涝灾害对中间投入、劳动力投入的影响程度逐渐提高。因此,有必要加强对湖北雨涝灾害的预警及预报,为农户尤其是高投入水平的种植大户提供必要的公共服务及知识技术支持。
[Abstract]:Based on the data of fixed observation points and meteorological data from 2003 to 2011 in Hubei Province, the "Z index" method is used to calculate the grade of rain and waterlogging in various meteorological stations. According to the calculation result of "Z index", the year is divided into normal year and year of rain and waterlogging disaster. Quantitative analysis of the effects of rain and waterlogging on the input behavior of rice growers by econometrics method. The results show that the partial waterlogging in Hubei Province was less than the severe waterlogging from 2003 to 2011, the extreme waterlogging did not occur and the heavy waterlogging occurred. In addition, there were significant differences between the normal year and the rainy year. The occurrence of the rain and waterlogging disaster had a significant positive effect on the intermediate input and labor input. In addition, the quantile regression showed that with the increase of quantiles, the effect of rain and waterlogging on the intermediate input and labor input increased gradually. It is necessary to strengthen the early warning and forecast of rain and waterlogging disaster in Hubei, and provide the necessary public service and knowledge and technical support for the farmers, especially the large farmers with high investment level.
【作者单位】: 华中农业大学经济管理学院;湖北农村发展研究中心;武汉轻工大学经济与管理学院;西南大学经济管理学院;
【基金】:国家自然科学基金国际合作项目(71461010701);国家自然科学基金面上项目(71473100) 教育部人文社会科学研究青年基金项目(12YJC790036)
【分类号】:F327;S422
【正文快照】: 1引言IPCC第五次评估报告指出,气候变暖具有持续性,由其引发的极端天气事件出现的概率也有所增加。Bernhard等[1]、Singh[2]、Keer[3]等分别针对欧洲、印度和非洲等地区旱涝灾害的研究发现,地球环境受气候暖干化的影响,旱涝灾害频发。国内学者研究发现,自1950年以来,中国的洪,
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