土壤微生物学特性对土壤健康的指示作用

被引:569
作者
周丽霞
丁明懋
机构
[1] 中国科学院华南植物园
基金
国家自然科学基金重点项目;
关键词
土壤微生物群落结构; 微生物生物量; 土壤健康; 生物指示;
D O I
暂无
中图分类号
S154 [土壤生物学];
学科分类号
090301 [土壤学];
摘要
土壤健康是陆地生态系统可持续发展的基础。作者通过概述土壤微生物学特性(土壤微生物群落结构、土壤微生物生物量、土壤酶活性)与土壤质量的关系,阐明了土壤微生物对土壤健康的生物指示功能。研究表明:土壤中细菌、真菌和放线菌的组成及其所占比率在一定程度上反映了土壤的肥力水平:在土壤性质和肥水条件较好的土壤中,细菌所占比率较高。土壤微生物生物量与土壤有机质含量密切相关,而且土壤微生物生物量碳与土壤有机碳的比值(Cmic:Corg)和土壤微生物代谢熵(qCO2)的变化在一定程度上反映了土壤有机碳的利用效率。一般情况下,土壤酶活性高的土壤中,土壤微生物生物量碳、氮含量也高。因此,土壤微生物学特性可以反映土壤质量的变化,并可用作评价土壤健康的生物指标。
引用
收藏
页码:162 / 171
页数:10
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