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李小珍, 刘映红, 赵志模, 周利飞. 2004: 二点叶蝉自然种群的时空动态. 动物学研究, 25(3): 221-226.
引用本文: 李小珍, 刘映红, 赵志模, 周利飞. 2004: 二点叶蝉自然种群的时空动态. 动物学研究, 25(3): 221-226.
LI Xiao-zhen, LIU Ying-hong, ZHAO Zhi-mo, ZHOU Li-fei. 2004. Temporal and Spatial Dynamics of Cicadulina bipunctella Natural Populations. Zoological Research, 25(3): 221-226.
Citation: LI Xiao-zhen, LIU Ying-hong, ZHAO Zhi-mo, ZHOU Li-fei. 2004. Temporal and Spatial Dynamics of Cicadulina bipunctella Natural Populations. Zoological Research, 25(3): 221-226.

二点叶蝉自然种群的时空动态

Temporal and Spatial Dynamics of Cicadulina bipunctella Natural Populations

  • 摘要: 选择受密度影响较小的负二项分布K值,描述玉米上二点叶蝉自然种群在3个海拔高度上的空间格局及时序动态。在玉米生育期间,二点叶蝉种群即可作聚集分布亦可作均匀分布。4月中下旬,二点叶蝉种群呈均匀分布(K<0);5月份,呈聚集分布(K>0);6月上中旬呈均匀分布(K<0);6月下旬至7月上旬呈聚集分布(K>0),表现为扩散→聚集→再扩散→再聚集的总趋势。K值亦表明,5月份高海拔聚集强度最高,6月下旬至7月上旬则低海拔的聚集强度最高。根据Taylor的幂函数法和Iwao的M*-X回归方程的系数,高、中海拔的聚集强度大于低海拔。

     

    Abstract: The K value of negative binomial distribution less affected by density was chosen to describe the spatial and temporal patterns of the natural population of Cicadulina bipunctella (Mats) at three elevations.Spatial distribution information of the population showed either clumped (aggregated) or uniform patterns during the period of maize growth.The population of C.Bipunctella distributed uniformity (K<0) at the last twenty days in April,and spatial aggregation (K>0) in May,then dispersal (K<0) from the first ten-day period to the middle ten days of June and aggregation (K>0) again from the last ten-day period of June to the first ten-day period of July.The high elevation had the highest degree of aggregation in May,followed by the low elevation from the last ten-day of June to the first ten-day of July according to the K values.Based on the coefficients of Taylors power law and Iwaos M*-X regression,the degree of aggregation of the high elevation and the middle elevation were higher than the low elevation during the whole period of maize growth.

     

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