摘要
研究了黄土高原不同树龄的刺槐人工林地土壤微生物的分布特征。结果表明:土壤细菌随树龄的变化不显著,而放线菌和真菌的数量随树龄的变化显著;细菌、放线菌和真菌数量随土壤深度的变化极为显著;细菌数量随土壤深度的变化规律符合QuadraticsRatio模型,放线菌和真菌数量则随土壤深度呈现指数衰减变化。
The distributive feature of soil microorganism of Robinia pseudoacacia L. plantation forestland in Loess Plateau under different forest age has been studied. The results shows that quantitive variety of bacterism corresponding with forest age is not remarkable, but actinomyces is remarkable; Quantitive variety of bacterism, actinomyces and fungi corresponding with soil depth is very outstanding; The variety of bacterism quantity corresponding with soil depth abides by Quadratics Ratio model, the quantitive variety of actinomyces and fungi corresponding with soil depth fit to index function.
出处
《水土保持学报》
CSCD
北大核心
2004年第6期128-131,共4页
Journal of Soil and Water Conservation
基金
国家"十五"科技攻关计划重大专项(2001BA516A15-05)
陕西省自然基金项目(20020201093)
关键词
黄土高原
刺槐
林地
土壤微生物
分布特征
Robinia pseudoacacia L. plantation
bacterism
actinomyces
fungi
