摘要
应用地统计学和地理信息系统 ,对浙江早稻二化螟卵块的空间分布格局及动态进行了分析 .发现 1981～ 1987年的卵块在大区域空间上呈现明显的聚集分布格局 ,聚集范围在 171～ 330 km之间 ,各年的聚集中心和各密度等级的分布范围均处于动态变化之中 .总的分布格局是浙北及浙东北沿海一带发生偏重 ,安吉、长兴、湖州一带发生最重 ,浙西和浙东南沿海一带发生较轻 ,苍南、泰顺。
Geostatistics methods and GIS were used to analyze spatial distribution of egg masses of the 1st generation of Chilo suppressalis (Walker) and its dynamics in the 1st rice crop season in Zhejiang province. The results showed that the spatial ditribution patterns were mainly aggregated in all years and the range of aggregation varied from 171 to 330 kilometers. However,the centers of aggregation and distribution patterns were changed with time. In general,the density grades were higher in north and coastal area of northeast, whereas its grades were lower in west and coastal area of southeast in the province. the density grade was the highest in Anji ,Changxing ,Huzhou and the lowest in Cangnan,Taishun ,Pingyang during 1981 to 1987.
出处
《浙江大学学报（农业与生命科学版）》
CSCD
北大核心
2000年第5期465-473,共9页
Journal of Zhejiang University:Agriculture and Life Sciences
基金
国家自然科学基金重点资助项目! (396 30 2 0 0 )
关键词
二化螟
卵块
空间分布格局
水稻害虫
地统计学
Chilo suppressalis
(Walker)
egg mass
spatial distribution pattern
dynamics change
geostatistics
geographic information system
