To study niche of acaroid mites breeding in Chinese traditional medicinal materials (Grains stock) with the logical and
qualitative research. 9 species of acaroid mites were isolated from 15 species of traditional medicinal material in 3 Grains stocks with the stratified sampling. There was no significant difference ( t ≤ 0.647 6 , P >0 05) in ecological niche breadth of acarus L. and Oudemans ,but the significant difference ( t =3 098, P <0 05; t ≤ 2.290 2 , P >0 05) in their niche overlaps. There was significant difference ( χ 2 =6 825, P <0 05) between acarus L. and Rhizoglyphus claparede species in Qing Ri group of Grains stock,and the same finding ( χ 2 =165 432, P <0 001) as acarus L. and Tyrophagus Putrescentiae in 3 Grains stocks,except for Radix Isatidis of Grains stock ( χ 2 =2 460, P >0 05). They might be a stronger independent breeding(or protocooperation) from their coefficient of interspecies association all near to 0.While logical china was defined as the relations of ecological niche breadth,overlaps and coefficient of interspecies association.
There are common niche breadth and different niche overlaps between acarus L. and Oudemans ;and they might be a stronger independent breeding. The logical china clarifies the relations of ecological niche breadth,overlaps and coefficient of interspecies association.