Microbial Biomass in Upland Soils of the Central Amazon under Different Plant Covers
The objective of this study was to evaluate the microbial activity of carbon, nitrogen and phosphorus resulting from the replacement of the primary forest with Brachiaria brizantha, Hevea, cupuacu, citrus and secondary forest. There was no increase in soil fertility under secondary forest, but in the pasture had an increase in the stock of C and N and high C/N ratios, the inverse occurred with C-microbial biomass. The primary forest had the highest values of C, N and P of the microbial biomass and the lowest metabolic quotient. The Hevea was the plant cover with the smallest changes of C in the soil.
Adonis Moreira Nand Kumar Fageria
CPPSE-EMBRAPA, Caixa Postal 339, 13560-970, S(a)o Carlos, SP, Brazil CNPAF-EMBRAPA, Caixa Postal 179, 75375-000, Santo Ant(o)nio de Goias, GO, Brazil
国际会议
The 7th International Symposium on Plant-Soil Interactions at Low pH(第七届低pH条件下植物-土壤交互作用国际研讨会)
广州
英文
17-18
2009-05-17（万方平台首次上网日期，不代表论文的发表时间）