摘要
根据甘蔗生长状况、受害程度与低温冻害强度的关系,分析并确定甘蔗冻害的分级指标;利用广西90个气象台站30 a的气候资料和台站地理信息,建立冻害指标的空间分析模型,计算出1 km×1 km分辨率的广西极端最低气温的空间分布;并根据甘蔗冻害分级指标,通过GIS的空间分析能力,分析广西甘蔗低温冻害的空间分布特征,为广西甘蔗生产的趋利避害和优化布局提供决策参考.
According to the relationships among sugarcane growth, injury degree and freezing damage intensity, the grading indices were analyzed and estalished for the freezing damage of the plants. Using the climatic data for 30 years and geographic information of 90 weather stations in Guangxi, spatial analyzing models of the indices of freezing damage were built. The values of annual extremely lowest temperature in Guangxi were reckoned on the little grids of lkm× lkm by GIS. According to the grading indices and by the function of spatial analyses of GIS, the characteristics of the spatial distribution of sugarcane freezing damage in Guangxi were analyzed. The results provide a scientific basis for optimizing distribution of sugarcane planting in Guangxi, and for making use of its advantages and avoiding its disadvantages.
出处
《西南大学学报（自然科学版）》
CAS
CSCD
北大核心
2007年第9期81-85,共5页
Journal of Southwest University(Natural Science Edition)
基金
中国气象局气象新技术推广项目(CMATG2006M42)
"十一五"国家科技支撑计划重点项目(2006BAD04B03)
广西基金资助项目(桂科基0778006-11)
关键词
GIS技术
甘蔗
冻害区划
广西
GIS
sugarcane
division of freezing damage
Guangxi
