干旱地区农业研究Issue(2)：14-20,7.
河北省棉花气候风险度及其变化趋势分析
Analysis on the climate risk degree and change trend of cotton in Hebei Province
摘要
Abstract
In order to discuss the spatial and temporal distribution regulation of climate risk in the cotton production in Hebei Province ,have analyzed the air temperature ,precipitation ,sunshine hours in each cotton growth stage ,climate risk degree and its spatial and temporal changing trend by using the meteorologic data and cotton yield in 21 cotton plant-ing counties of Hebei Province from1970 to 2011 .The results showed that :The biggest climate element risk degree was the precipitation ,which was from 0 .138 to 0 .267 ,the secondly was the temperature with 0 .007 to 0 .173 ,the lowest was sunshine hours ,which was 0 .019 to 0 .04 .The climate element risk degree was different in each growth stage ,also the spatial and temporal changing tendency had obvious difference .The spatial distribution of risk degree has obvious re-gional characteristics ,such as the risk degree in south cotton region was higher than the mid-northern region .From the historical change trend ,the precipitation risk degree was increased in seedling stage and flowering and boll -forming stag , but decreased in other growth stages ,among them the decrease was more obviously in the flower and boll stage and open -ing stages .The air temperature risk degree was slightly increased in the flower and boll stage ,but in other stages was slightly decreased .The risk degree of sunshine hours excepted the planting stage ,total had the increasing trend .This re-search results have the important significance for the cotton production layout and scientific decision-making in Hebei Province .关键词
气候风险度/时空分布/河北省Key words
climate risk degree/spatial and temporal distribution/Hebei Province分类
农业科技引用本文复制引用
马春平,姚树然..河北省棉花气候风险度及其变化趋势分析[J].干旱地区农业研究,2014,(2):14-20,7.基金项目
“十二五”国家科技支撑计划重点项目 （）
