Spatial distribution pattern of Chilo suppressalis analyzed by classical method and geostatistics

Abstract

Abstract: Two original samples of Chilo suppressalis and their grid,random and sequence samples were analyzed by classical method and geostatistics to characterize the spatial distribution pattern of C.suppressalis.The limitations of spatial distribution analysis with classical method,especially influenced by the original position of grid,were summarized rather completely.On the contrary,geostatistics characterized well the spatial distribution pattern,congregation intensity and spatial heterogeneity of C.suppressalis.According to geostatistics,the population was up to Poisson distribution in low density.As for higher density population,its distribution was up to aggregative,and the aggregation intensity and dependence range were 0.1056 and 193 cm,respectively.Spatial heterogeneity was also found in the higher density population.Its spatial correlativity in line direction was more closely than that in row direction,and the dependence ranges in line and row direction were 115 and 264 cm,respectively.

Key words: Chilo suppressalis, Spatial distribution pattern, Geostatistics

CLC Number:

Q968.1

YUAN Zheming, FU Wei, LI Fangyi. Spatial distribution pattern of Chilo suppressalis analyzed by classical method and geostatistics[J]. Chinese Journal of Applied Ecology, 2004, (4): 610-614.

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