Welcome to Chinese Journal of Ecology! Today is Share:

cje ›› 1999, Vol. ›› Issue (2): 63-66.

Previous Articles     Next Articles

Modification of Fumigation Extraction Method for Measuring Soil Microbial Biomass Carbon

Lin Qimei1, Wu Yuguang2, Liu Huanlong3   

  1. 1. Department of Soil and Water Sciences, China Agricultural University, Beijing 100094;
    2. The Institute of Plant Nutrition and Agricultual Resources, Beijing Academy of Agriculture and Forest, 100081;
    3. Beijing Agricultural Sckool, 100085
  • Received:1998-05-04 Online:1999-04-10

Abstract: Both K2Cr2O7-H2SO4 additional heating method and the traditional K2Cr2O7-HgO-H2SO4-H3PO4 method were used in measuring the carbon in soil K2SO4extract. It was found that the former method is much more safe,simple and fast than the later one.The results obtained by the K2Cr2O7-H2SO4 additional heating method are also more accurate and precise than those by the traditional K2Cr2O7-HgO-H2SO4-H3PO3 one .Thus,the K2Cr2O7-H2SO4 additional heating method can be used in the routine analysis measurement of soil microbial biomass carbon.

Key words: Korean pine, branch diameter growth, branch length growth, growth model, nonlinear mixed model.