Dynamic characteristics of soil collembolans in the birch forest of Xiao xinganling

Abstract

Abstract: Dynamic characteristics of soil collembolans in the birch forest of Xiao Xing’anling were studied from 1995 to 1997.Totally 3631 soil collembolans belonging to 10 families were obtained,among which,Isotomidae,Onychiuridae and Hypogastruridae were dominant and their amount reached 90.22% of the total.The individual numbers and the family numbers of soil collembolans in 1997 were the highest.The monthly dynamics of individual numbers of soil collembolans was June<August<October,while the family number of August was the highest.The vertical distribution of soil collembolans tended to decrease with the increaseing depth.In each soil layer,the percentage of individual number increased with time.Isotomidae,which has the most individual number accorded with the law of vertical distribution and temporal dynamic especially.The changes of Shannon-Weiner diversity index,Margalef richness index and Pielou evenness index were similar,contrary to that of Simpson dominance index.The monthly dynamics of diversity was August>June>October.The values of richness and diversity index in 1997 were higher than those in 1996,and the values of the richness,diversity and evenness of August in 1997 was the highest.

Key words: Rice landrace core collection, Yunnan Province, Relative plant dry weight, Phosphorus deficiency

CLC Number:

Q958.113

DONG Weihua, YIN Xiuqin . Dynamic characteristics of soil collembolans in the birch forest of Xiao xinganling[J]. cje, 2005, (3): 278-282.

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