EFFECTS OF WATER PULSES AND CLIMATIC CONDITIONS ON MICROBIAL BIOMASS KINETICS AND MICROBIAL ACTIVITY IN A YERMOSOL OF THE CENTRAL NEGEV

被引:30
作者
FLIESSBACH, A
SARIG, S
STEINBERGER, Y
机构
[1] Institut für Bodenbiologie, Bundesforschungsanstalt für Landwirtschaft, FAL, Braunschweig
[2] Department of Life Sciences, Bar-Ilan University, Ramat Gan
来源
ARID SOIL RESEARCH AND REHABILITATION | 1994年 / 8卷 / 04期
关键词
SOIL WATER POTENTIAL; ARID SOILS; SOIL MICROBIAL BIOMASS; YERMOSOL; NEGEV; SOIL RESPIRATION; METABOLIC QUOTIENT; QCO2;
D O I
10.1080/15324989409381409
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Microbial biomass and respiration kinetics were monitored in a soil from the central Negev Desert, Israel. The chloroform-fumigation-incubation (CFI) and the substrate-induced respiration (SIR) method were used to estimate microbial biomass carbon (C(mic)). Detectable soil microbial biomass estimates as revealed by CFI were found after the first rain that occurred following the dry summer period. CFI as well as SIR biomass figures increased during the rainy period to maximum values of 300 mug C(mic) g-1 soil and decreased rapidly toward the end of the rainy season. Under dry soil conditions no reproducible results were obtained for CFI, but SIR figures decreased to 70 mug C(mic) g-1 soil during the hot summer period. Soil respiration in the upper 10-cm soil layer fluctuated significantly on a monthly timescale, whereas the metabolic quotient for CO2 (qCO2) stabilized at low rates only during the rainy season, indicating that microbial activity is rapidly becoming balanced, when climatic conditions allow microbial growth.
引用
收藏
页码:353 / 362
页数:10
相关论文
共 23 条
[1]  
Anderson J.P.E., Domsch K.H., A physiological method for the quantitative measurement of microbial biomass in soils, Soil Biology and Biochemistry, 10, pp. 215-221, (1978)
[2]  
Anderson T.H., Domsch K.H., Carbon assimilation and microbial activity in soil, Zeitschrift Fiir Pflanzenemdhrung Und Bodenkunde, 149, pp. 457-468, (1986)
[3]  
Anderson T.H., Domsch K.H., Application of eco-physiological quotients (QC02 and qD) on microbial biomasses from soils of different cropping histories, Soil Biology and Biochemistry, 22, pp. 251-255, (1990)
[4]  
Buyanovsky G., Dicke M., Berwick P., Soil environment and activity of soil microflora in the Negev Desert, Journal of Arid Environments, 5, pp. 13-28, (1982)
[5]  
Charley J.L., West N.E., Micro-patterns of nitrogen mineralization activity in soils of some shrub-dominated semi-desert ecosystems of Utah, Soil Biology and Biochemistry, 9, pp. 357-365, (1977)
[6]  
Dan J., Moshe R., Alperovitch N., The soils of the Sede Zin, Israel Journal of Earth Sciences, 22, pp. 211-217, (1973)
[7]  
Evenari M., Shanan L., Tadmore H., The Negev—A Challenge of a Desert., (1982)
[8]  
Heinemeyer O., Insam H., Kaiser E.A., Walenzik G., Soil microbial biomass and respiration measurements: An automated technique based on infrared gas analysis, Plant and Soil, 116, pp. 191-195, (1989)
[9]  
Insam H., Domsch K.H., Relationship between soil organic carbon and microbial biomass on chronosequences of reclamation sites, Microbial Ecology, 15, pp. 177-188, (1988)
[10]  
Jenkinson D.S., Powlson D.S., The effects of biocidal treatments on metabolism in soil, V: A method for measuring soil biomass, Soil Biology and Biochemistry, 8, pp. 209-213, (1976)