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黄地老虎种群动态与积雪的关系

吕昭智1;王玲2;张秋红3;巩志中3;丁红3   

  1. 1中国科学院新疆生态与地理研究所, 乌鲁木齐 830011;
    2石河子大学农 学院, 石河子 832003;
    3石河子莫索湾农业技术推广站, 石河子 832056
  • 收稿日期:2006-04-03 修回日期:2006-09-11 出版日期:2006-12-10 发布日期:2006-12-10

Relationships between overwintering Agrotis segetum population and snow

Lü Zhaozhi1;WANG Peiling2;ZHANG Qiuhong3;GONG Zhizhong3;DING Hong3   

  1. 1Xinjiang Ecology and Geography Institute, Chinese Academy of Sciences,Urumqi 830011, China;
    2Agronomy College, Shihezi University,Shihezi 832003, China;
    3Shihezi Agricultural Extension in Mosuowan, Shihezi 832056, China
  • Received:2006-04-03 Revised:2006-09-11 Online:2006-12-10 Published:2006-12-10

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(R2=0.6022,P <0.0083),而与冬季最大积雪厚度(R2=0.23,P=0.1577)和秋冬季(11月~翌年4月)积雪天数(R2=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。

关键词: 退化土壤, 鹅绒萎陵菜, 克隆生长, 生物量分配

Abstract: 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 results showed that the emerge nce 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 (R2=0.6022, P<0.0083), but no significant correlations with the maximum snow depth(R2=0.23,P=0.1577)and the days of snow covering(R2=0.099,P<0.3748) from November to next April.The duration of snow covering from January to early April could be used as an important parameter in predicting the dynamic of A. segetum population.

Key words: Degraded soil, Potentilla anserina, Clonal growth, Biomass allocation