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[1]YANG Pei,WANG Hai-Xia,YUE Jia.Ecological Distribution of Middle-small-size Soil Faunas under Conservation Tillage and Straw Mulch Conditions[J].Research of Soil and Water Conservation,2013,20(02):145-150.

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Ecological Distribution of Middle-small-size Soil Faunas under Conservation Tillage and Straw Mulch Conditions

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 20 Number of periods: 2013 02 Page number: 145-150 Column: Public date: 2013-04-28

Title:: Ecological Distribution of Middle-small-size Soil Faunas under Conservation Tillage and Straw Mulch Conditions

Author(s):: YANG Pei¹, WANG Hai-Xia^1,2, YUE Jia¹; 1. College of Geography and Tourism, Jilin Normal University, Siping, Jilin 136000, China;
2. College of Urban and Environmental Science, Northeast Normal University, Changchun 130024, China

Keywords:: straw mulch; conservation tillage; middle-small-size soil faunas; biodiversity

CLC:: S154.5

DOI:: -

Abstract:: In May, July and September, 2011, the characteristics of the ecological distribution of small and medium-sized soil faunas was investigated by setting the no-tillage farmland of corn stover coverage. Small and medium-sized soil faunas were separated by using the Tullgren method. The results showed that a total of 6 814 small and medium-sized soil faunas under an indoor microscope were identified. The dominant group includes oribatida and actinedida, occupying 77.1%. Soil faunas were concentrated in 0—10 cm soil layer, occupying 76% of the individuals, with the apparent surface gathering character. The results showed that the Margalef species richness index (R) sequence followed the order of 3.10 (full straw cover+straw mulch) > 2.96(50% straw cover+straw mulch) > 2.18 (ordinary cornfield), indicating that the small and medium-sized soil fauna diversity in farmland with full corn straw mulch was high and the number of individuals was maximal. 50% of the straw mulch and straw mulch richness of small and medium-sized soil faunas were higher than the ordinary corn field. The number of mites under the no-tillage conditions with full straw cover the was 2 680, which was 1.32 times of the number of mites in the ordinary cornfield. The seasonal distribution of soil meso was obvious differences under the different straw mulching levels and soil environment. Compared with the ordinary corn field, whole straw mulch provided a richer living conditions to improve small and medium-sized soil faunal biodiversity.

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