Community Characteristics of Soil Animals in Minqin Shiyang River National Wetland Park in Spring
The community characteristics of soil animals in 7 different plant formations of 5 vegetation types in 4 functional areas of Shiyang River National Wetland Park in Minqin of Gansu were investigated from March to May 2023.46 groups with 1488 individuals of soil animals were collected in total.They were belonging to 3 phy-lums,5 classes,13 orders and 25 families.The proportion of medium and small soil animals was 97.38％and that of large soil animals was 2.62％.Nematodes were dominant in the community structure.The family of Cephalo-bus,Eucephalobus and Dolichoderus has been dominant groups of medium and small soil animals in this study,which was accounting for 48.58％of the total collection;there were 16 common groups accounting for 47.13％of the total collection,including Acrodeles,Acrobeloides,Pratylenchus,Hemicycliphora and Heminothrus.14 groups were found as rare groups,including Lymnaea,Radix,Amphicoelina,Pupil and Philodromus,which was only ac-counting for 4.29％of the total collection.The dominant groups of soil macrofauna are Elateridae and Tenebrioni-idae.The individual number,group number,Margalef richness index,and Shannon-Wiener diversity index of soil animals in Elaeagnus angustifolia Linn community and Artemisia ordosica Krasch community are higher than those in other plant community.The Simpson dominance index is relatively lower.It was found that the similarity of soil animals was extreme dissimilarity to medium dissimilarity in 7 sampling sites.Both number of individuals and species of soil animals were significantly higher on the surface of the soil in Elaeagnus angustifolia Linn community,Nitraia tangutorum Bobr.community and Tamarix ramosissima Lcdcb community.The vertical distri-bution of soil animals in the Artemisia ordosica Krasch community,Achnatherum ssplendens(Trin.)Nevski commu-nity and Phragmites communis(Cav.)Trin.ex Steud community exhibits heterogeneity.
Minqin Shiyang River National Wetland Parkplant formationsspringsoil animalscommunity characteristics
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