Soil microbial biomass in degenerated and recovered grasslands of Huangfuchuan watershed

Abstract

Abstract: Soil microbial biomass was investigated in degenerated and recovered grasslands of Huangfuchuan watershed,in Inner Mongolia,China.The results showed that the vertical distribution of total soil microbial biomass in both degenerated and recovered grasslands was in order of 0～10>10～20>20～30>30～40>40～50 cm,which decreased with soil depths.Total bacteria and filamentous microbial biomass in 0～10cm were more than that in the other soil layers.Compared with the degenerated grassland,the biomass of soil microbial was higher in the recovered grassland.The distribution characteristics of soil microbial biomass in natural grassland was significantly related to soil fertility factors.The status of recovered grassland was superior to that of degenerated grassland,which meant that to recover grassland is the key measure to improve soil quality and to protect the ecological environment of Huangfuchuan watershed.

Key words: Dendrocalamus latiflorus, Mountainous area, Litter, Nutrient

CLC Number:

S154

SHAO Yuqin, AO Xiaolan, SONG Guobao, LIU Ruifeng, LI Hua. Soil microbial biomass in degenerated and recovered grasslands of Huangfuchuan watershed[J]. cje, 2005, (5): 578-580,584.

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