摘要
利用新疆北部地区黑光灯下黄地老虎越(Agrotis segetum)冬代种群数据(1992~2001年),分析了越冬代种群数量与冬季积雪最大厚度和天数的关系。结果表明,黄地老虎越冬代发蛾的时间为4月30日~6月15日,越冬代种群数量年际间存在很大波动性。黄地老虎越冬代种群数量与当年度覆雪天数(1月1日~4月初)呈显著负相关(R^2=0.6022,P〈0.0083),而与冬季最大积雪厚度(R^2=0.23,P=0.1577)和秋冬季(11月~翌年4月)积雪天数(R^2=0.099,P〈0.3748)相关不显著。当年度覆雪天数可以作为黄地老虎预测中的一项重要的参考指标。
Based on the 1992 - 2001 data of light trap, this paper analyzed the relationships of overwintering Agrotis segetum population with the maximum snow depth and the days of snow covering in North Xinjiang. The resuits showed that the emergence of overwintering generation was from April 30 to June 15, and the population size fluctuated obviously among years. The population number of overwintering A. segetum had a significant negative correlation with the days of snow covering from January to early April (R^2 = 0. 6022, P 〈 0. 0083), but no significant correlations with the maximum snow depth (R^2 = 0.23, P = 0. 1577) and the days of snow covering (R^2 =0.099, P〈0.3748) from November to next April. The duration of snow coveting from January to early April could be used as an important parameter in predicting the dynamic of A. segetum population.
出处
《生态学杂志》
CAS
CSCD
北大核心
2006年第12期1532-1534,共3页
Chinese Journal of Ecology
基金
新疆自治区高新技术项目(200512116)
新疆生产建设兵团博士基金资助项目(05JC05)。
关键词
黄地老虎
种群动态
积雪
灯光诱集
Agrotis segetum, population dynamic, snow, light trap