Welcome to Bulletin of Botanical Research! Today is Share:

Bulletin of Botanical Research ›› 2017, Vol. 37 ›› Issue (4): 549-555.doi: 10.7525/j.issn.1673-5102.2017.04.010

Previous Articles     Next Articles

Effects of Fire Intensity on the Soil Microbial Community of Larch gmelinii Forests

PENG Yao1, CAO Feng-Yan2, QU Lai-Ye3,4   

  1. 1. Mudanjiang Normal university, Mudanjiang 157000;
    2. Northeast Forestry University, Harbin 150040;
    3. State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-environmental Science, Chinese Academy of Sciences, Beijing 100085;
    4. University of Chinese Academy of Sciences, Beijing 100049
  • Received:2017-01-03 Online:2017-07-15 Published:2017-07-22
  • Supported by:
    National Natural Foundation of China(30700639)

Abstract: We studied theeffects of fire intensity on the soil microbial community of larch forests by selecting three kinds of sites including high intensity burned site, light intensity burned site and unburned site in the current year burning in the Daxing'an Mountain. Soils were sampled from 0-5 and 5-10 cm, separately in each site, and the soil microbial characteristics were analyzed by phospholipid fatty acid(PLFAs). The pH, total potassium, available phosphorus and clay and sand content were significantly compared with burned and unburned sites. The total soil microbial biomass, bacteria biomass, fungus biomass and Frankia biomass were influenced by fire, there was no significant difference in three sites. However, the structure of soil microbial community indictors, such as G+/G-and F/B, were significantly different compared high intensity burned site and other two sites. By RDA analysis, G+/G-was influenced by soil water content, and F/B was influenced by soil pH.Therefore, the current year of burning, soil water content and pH are critical factors in affecting the structure of soil microbial community.

Key words: fire intensity, burned site, phospholipid fatty acid, soil physiochemical properties, structure of soil microbial community

CLC Number: