[1]LI Yu-jin,WANG Bai-qun.Effect of Amendment of Leaf and Stem of Switchgrass(Panicum virgatum) on Soil Organic Carbon and Microbial Biomass Carbon as well as the Decomposition Characteristic of the Leaf and Stem[J].Research of Soil and Water Conservation,2012,19(05):78-82.
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Effect of Amendment of Leaf and Stem of Switchgrass(Panicum virgatum) on Soil Organic Carbon and Microbial Biomass Carbon as well as the Decomposition Characteristic of the Leaf and Stem
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
19
Number of periods:
2012 05
Page number:
78-82
Column:
Public date:
2012-10-20
- Title:
- Effect of Amendment of Leaf and Stem of Switchgrass(Panicum virgatum) on Soil Organic Carbon and Microbial Biomass Carbon as well as the Decomposition Characteristic of the Leaf and Stem
- CLC:
- S153.6+1
- DOI:
- -
- Abstract:
- An incubation experiment under the constant temperature of 25℃ was conducted to investigate the effect of amendment of leaf and stem of switchgrass(Panicum virgatum) on soil organic carbon(SOC) and microbial biomass carbon(MBC) and the decomposition characteristic of the leaf and stem at various amendment rates of switchgrass leaf and stem. The results showed that the contents of SOC and MBC increased with amendment rates of switchgrass leaf and stem after the incubation of 90 days. Under the same amendment rates of leaf and stem, the pools of soil MBC were larger in the treatments of leaf amendment than that in the treatments of stem amendment, whereas the contents of SOC were higher in the treatments of stem amendments than those in the treatments of leaf amendments. There was a certain discrepancy of decomposition rate between the leaf and stem. The decomposition rates of leaf and stem were determined by the amendment rates. Under the same amendment rates of leaf and stem, the decomposition rates of leaf were higher those of stem, indicating that turnover rate of organic of stem in the soil was longer that of the leaf, and the amendment of stem was conductive to accumulation of organic carbon in soil.
- References:
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