Preliminary Study on Biological Characteristics of Degraded Soil Ecosystems in Dry Hot Valley of the Jinsha River

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Preliminary Study on Biological Characteristics of Degraded Soil Ecosystems in Dry Hot Valley of the Jinsha River

机译：金沙江干热河谷退化土壤生态系统生物学特性的初步研究。

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Distribution characteristics of soil animals, microorganisms and enzymatic activity were studied in thedry red soil and Vertisol ecosystems with different degradation degrees in the Yuanmou dry hot valley of theJinsha River, China. Results showed that Hymenoptera, Araneae and Collembola were the dominant groupsof soil animals in the plots studied. The numbers of groups and individuals and density of soil animals in thedry red soil series were higher than those in the Vertisol series, and the numbers of individuals and density ofsoil animals decreased with the degree of soil degradation. Bacteria dominated microbiocoenosis not only inthe dry red soils but also in the Vertisols. Microbial numbers of the dry red soil series were higher than thoseof Vertisol series, and decreased with the degree of soil degradation. The activities of catalase, invertase,urease and alkaline phosphatase declined with the degradation degree and showed a significant decline withdepth in the profiles of both the dry red soils and the Vertisols, but activities of polyphenol oxidase andacid and neutral phosphatase showed the same tendencies only in the Vertisols. It was concluded that thecharacteristics of soil animals, microorganisms and enzymatic activity could be used as the bio-indicators toshow the degradation degree of the dry red soils and Vertisols. Correlation among these soil bio-indicatorswas highly significant.

机译：研究了金沙江元谋干热河谷不同降解程度的旱红壤和绿松生态系统中土壤动物的分布特征，微生物和酶活性。结果表明，在所研究的样地中，膜翅目，伞形科和Collembola是土壤动物的主要群体。干红壤系列土壤动物的种群数量和密度均高于Vertisol系列，土壤退化动物的种群数量和密度降低。细菌不仅在干燥的红色土壤中而且在Vertisols中均以微生物群落为主导。干红壤系列的微生物数量高于Vertisol系列，但随着土壤退化程度的降低而降低。过氧化氢酶，转化酶，脲酶和碱性磷酸酶的活性随着降解程度的降低而下降，并且在干红壤和Vertisols的剖面上均呈深度下降的趋势，但多酚氧化酶，酸和中性磷酸酶的活性仅表现出相同的趋势。眩晕。结论是，土壤动物的特征，微生物和酶活性可以作为生物指标，以显示干燥的红壤和藜芦的降解程度。这些土壤生物指标之间的相关性非常重要。

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《土壤圈（英文版）》 |2002年第4期|365-372|共8页
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作者单位

Chengdu Institute of Biology, the Chinese Academy of Sciences, Chengdu 610041 China;

College of Resources and tEnvironment, Southwest Agricultural University, Chongqing 400716 China;

Chengdu Institute of Biology, the Chinese Academy of Sciences, Chengdu 610041 China;

College of Resources and tEnvironment, Southwest Agricultural University, Chongqing 400716 China;

Institute of Mountain Hazards and Environment, the Chinese Academy of Sciences and Ministry of Water Conservancy, Chengdu 610041 China;

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收录信息中国科学引文数据库(CSCD);
原文格式 PDF
正文语种 chi
中图分类土壤学;
关键词
degraded soil ecosystem; soil enzyme; soil fauna; soil microbes;

机译：退化的土壤生态系统;土壤酶;土壤动物区系;土壤微生物;

Preliminary Study on Biological Characteristics of Degraded Soil Ecosystems in Dry Hot Valley of the Jinsha River

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