Welcome to Chinese Journal of Applied Ecology! Today is Share:

Chinese Journal of Applied Ecology ›› 2003, Vol. ›› Issue (3): 413-417.

Previous Articles     Next Articles

Geostatistical analysis on spatial patterns of Didesmococcus koreanus Borchs and Chilocorus rubidus Hope

HUANG Baohong1, ZOU Yunding2, BI Shoudong2, ZHU Hongwei1, GAO Zhengliang3   

  1. 1. Anhui Technical NormalCollege, Fengyang 233100, China;
    2. Anhui Agricultural University, Hefei 230036, China;
    3. Tobacco Research Institute of Anhui Province, Fengyang 233100, China
  • Received:2002-08-07 Revised:2002-11-20

Abstract: The spatial pattern and correlation of Didesmococcus koreanus Borchs and Chilocorus rubidus Hope in different periods were investigated with geostatistics. The results showed that the semivariogram of Didesmococcus koreanus Borchs and Chilocorus rubidus Hope could be described by spherical model, indicating that their spatial pattern were in agreement. The spatial variation was arosed by its spatial autocorrelation in small scales, and the spatial pattern had no apparent changes in different periods. The range varied from 9.56~15.70 m and from 18.83~19.74 m, respectively. The amount and spatial distribution of Chilocorus rubidus Hope was closely related to that of Didesmococcus koreanus Borchs, which revealed that Chilocorus rubidus Hope was the dominant natural enemy of Didesmococcus koreanus Borchs.

Key words: Didesmococcus koreanus Borchs, Chilocorus rubidus Hope, Spatial pattern, Geostatistics, Pinus koraiensis, diameter at breast height, tree-ring, latitude, climate change

CLC Number: