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应用生态学报 ›› 1996, Vol. 7 ›› Issue (3): 293-298.

• 研究论文 • 上一篇    下一篇

东北羊草草原不同植被类型土壤微生物呼吸速率的初步研究

张崇邦1, 杨靖春2   

  1. 1. 黑龙江省克山师范专科学校, 克山161601;
    2. 东北师范大学生物系, 长春130024
  • 收稿日期:1994-03-21 修回日期:1995-05-18 发布日期:1996-07-25
  • 基金资助:

    国家自然科学基金资助项目

Preliminary study on respiration rate of soil microorganism under different vegetations on Aneurolepidium chinense grassland of northeast China

Zhang Chongbang1, Yang Jingchun2   

  1. 1. Keshan Normal College, Heilongjiang Province, Keshan 161601;
    2. Northeast Nor mal University, Changchun 130024
  • Received:1994-03-21 Revised:1995-05-18 Published:1996-07-25

摘要: 对不同植被类型土壤微生物呼吸速率的动态变化及其与生态因子相关性研究表明,微生物呼吸速率以羊草土壤最高(平均为17.2μlCO2·g-1干土·h-1),隐子草土壤最低(8.79μlCO2·g-1干土·h-1),并随着土壤深度而递减.高峰值在8月份(28.39μlCO2·g-1干土·h-1).相关分析表明,微生物呼吸速率与微生物数量、植物生物量、土壤水热条件和营养成分的季节变化呈正相关,与土壤pH呈负相关.

关键词: 羊草草原, 土壤微生物, 呼吸速率

Abstract: The respiration rate of soil microorganism under different vegetations and its correlation with ecological factors are studied. The results show that the respiration rate is the highest(17.2μlCO2·g-1dry soil·h-1) in A.chinense soil,and lowest(8.7μlCO2·g-1dry soil·h-1) in Cleistogenes squarrosa soil,being decreased with increasing soil depth.The peak is occured in August,being 28.39μlCO2·g-1 dry soil·h-1.Correlation analysis shows that the respiration rate is positively related to plant biomass and soil conditions(e.g.,moisture-hear regime and nutrient status),and negatively related to soil PH.

Key words: Aneurolepidium chinense, Soil microorganism, Respiration rate