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Chinese Journal of Applied Ecology ›› 2000, Vol. ›› Issue (3): 421-424.

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Geostatistical analysis on spatial patterns of Aphis gossypii and Propylaca japonica

BI Shoudong, ZOU Yunding, GENG Jiguang, WANG Gongming, CHEN Gaochao, MENG Qinglei   

  1. Anhui Agricultural University, Hefei 230036
  • Received:2000-02-25 Revised:2000-04-03 Online:2000-05-25

Abstract: The spatial construction and distribution of Aphis gossypii and Propylaca japonica at different period were investigated with geostatistics.The results showed that the semivariogram of Aphis gossypii was described by spherical model,indicating an aggregated spatial arrangement,the range was 8.21~10.81m.The semivariograms of Propylaca japonica was fitted by spherical model too,also indicating an aggregated spatial arrangement,its range was 8.01~14.25m.The amount and spatial distribution of Propylaca japonica was closely related to that of Aphis gossypii. It reveals that Propylaca japonica is dominant natural enemies of influening population of Ahphis gossypii.

Key words: Aphis gossypii, Propylaca japoinica, Spatial distribution, Geostatistics