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- W2376259747 abstract "Soil fauna community was investigated in the agro-pasture ecotone in the middle of Inner Mongolia.Soil macrofauna was gained by handpicking in the field.In the laboratory,soil meso-microfauna was extracted by Tull- gren and Baermonn.Nematoda dominated the soil fauna community.The individual numbers accounted for 64.95% of the totals.The difference of their individual numbers in various soil types was significant (P0.05). Nematoda,Acari and Collembola were dominant groups of soil meso-microfauna.The groups and individuals of soil fauna in grassland were more than those in stopping farming field,semi-bare slope and bare slope.The composition of different habitats in grassland was various.The groups of macrofauna and meso-microfauna wereⅡⅢⅠand their individuals wereⅡⅢⅠandⅡⅠⅢ,respectively.Both groups and individuals of soil macrofau- na and meso-rfiicrofauna were gathering at surface in vertical distribution.The result of dendrogram of cluster analy- sis for soil fauna community showed that 6 habitats were divided into 3 kinds:grassland,slopes of stopping disturb- ance and bare slope.Soil moisture content was calculated after drying at 105℃.Measured soil factors included to- tal nitrogen (with microKjeldhal method),organic matter (with dichromate acid oxidation),total phosphorus (with a calorimetric method with molybdenum in sulfuric acid),total potassium (with flame photometry method),pH in saturation extract (with PHS-3B meter).Most of the contents of soil factors of 0-5 cm were higher than those of 5-10 cm.The average contents of soil moisture,organic matter and total nitrogen were as follows:grasslandstop- ping farming fieldsemi-bare slopebare slope.The contents of P and K of stopping farming field were higher than those of other habitats.The group of soil fauna was significantly positively correlated with soil moisture.The correlation coefficient of individual numbers of soil meso-microfauna and soil environmental factors was relatively higher than others.It showed that they were influenced by soil environmental factors.CCA two-dimensional scatter ordination diagram indicated that soil moisture had the greatest influence on soil meso-microfauna.The difference of soil factors in various habitats influenced the distribution of soil meso-microfauna.The composition and individuals of soil fauna was more similar in the habitats of similar land use.The difference of composition of soil fauna can re- flect the difference of land use.Their characteristics can be served as the biological index of land sustainable use." @default.
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- W2376259747 date "2008-01-01" @default.
- W2376259747 modified "2023-09-22" @default.
- W2376259747 title "Ecological characteristics of soil fauna in different soil types of agro-pasture ecotone:A case of Zhuozi Mountain,Inner Mongolia" @default.
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