| 松嫩沙地天然草地与人工草地土壤动物的对比研究 |
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| 引用本文： | 殷秀琴.松嫩沙地天然草地与人工草地土壤动物的对比研究[J].中国沙漠,1998,18(3):249-254. |
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| 作者姓名： | 殷秀琴 |
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| 作者单位： | 东北师范大学城市与环境科学学院 |
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| 摘 要： | 松嫩沙地天然草地和人工草地土壤动物的对比研究表明，天然草地大型土壤动物的优势类群与人工草地优势类群数相同，但类群有差别。而中小型土壤动物的优势类群是人工草地多。天然草地大型土壤动物和中小型土壤动物的常见类群都多于人工草地，而稀有类群则相反。两种草地类型的土壤动物在土层中的垂直分布存在差异性，但基本上是随着土层加深而递减，天然草地表层的土壤动物类群数均多于人工草地，主要是受土壤营养状况和理化性质的制约。
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| 关 键 词： | 松嫩沙地 天然草地 人工草地 土壤动物 |
SOIL ANIMALS IN NATURAL GRASSLAND AND ARTIFICIAL GRASSLAND ON SONGNEN SANDY LAND |
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| YIN,Xiu,qin.SOIL ANIMALS IN NATURAL GRASSLAND AND ARTIFICIAL GRASSLAND ON SONGNEN SANDY LAND[J].Journal of Desert Research,1998,18(3):249-254. |
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| Authors: | YIN Xiu qin |
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| Abstract: | Ecological study on soil animals has a history of only twenty years in our country, but mainly lays particular emphasis on the forest aspect. Study on the grassland aspect is less and only limited in natural grassland. This article makes a contrastive study on the soil animals in natural grassland and artificial grassland of Songnen sandy land. The dominant groups of large sized soil animals in natural grassland have 3 groups which are Formicidae, Staphylinidae and Aranida. Those of middle and small sized soil animals have 1 group which is Nematoda. The dominant groups of large sized soil animals in artificial grassland have 3 groups which are Formicidae, Scarabaeidae and Lygaeidae. Those of middle and small sized soil animals have 2 groups which are Nematoda and Actinedida. The dominant groups in natural grassland and artificial grassland are similar in number, but the group composition has some difference. The common groups of large sized soil animals in natural grassland have 9 groups and those of middle and small sized soil animals have 5 groups. The common groups of large sized soil animals in artificial grassland have 4 groups and those of middle and small sized soil animals have 4 groups. Natural grassland is the main type in Sonnen sandy land and has a large distribution area. Because of its large plant community cover, high biomass and high soil nutrient content, the common groups in natural grassland are more than those in artificial grassland. The rare groups of large sized soil animals in natural grassland have 5 groups and those of middle and small sized soil animals have 12 groups. The rare groups of large sized soil animals in artificial grassland have 7 groups and those of middle and small sized soil animals have 15 groups. Because artificial grassland is less influenced, the rare groups of soil animals in it are more than those in natural grassland. In horizontal distribution of soil animals, the large sized groups in natural grassland are more than those in artificial land, but the middle and small sized groups demonstrate the opposite pattern and soil animals in two grassland types have obvious difference in group composition. It shows that these groups have stronger choice over habitat and soil animals have certain instruction over different soil types. The vertical distribution of the soil animals in two grassland types is different, but basically its amount is decreased with soil depth increasing. The groups of soil animals in surface layer of natural grassland are more than those of artificial grassland and its amount is mainly restricted by the soil nutrient conditions and soil physical and chemical properties. |
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| Keywords: | Songnen sandy land\ Natural grassland\ Artificial grassland\ Soil animals |
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