Soil-released carbon dioxide from microbial biomass carbon in the cultivated soils of karst areas of southwest China

2000 ◽  
Vol 31 (5) ◽  
pp. 422-426 ◽  
Author(s):  
H. C. Piao ◽  
Y. Y. Wu ◽  
Y. T. Hong ◽  
Z. Y. Yuan
Keyword(s):  
Carbon Dioxide ◽  
Microbial Biomass ◽  
Southwest China ◽  
Microbial Biomass Carbon ◽  
Biomass Carbon ◽  
Karst Areas ◽  
Cultivated Soils

Spatial heterogeneity of soil microbial biomass carbon, nitrogen, and phosphorus in sloping field in a groge Karst region, Southwest China

2014 ◽  
Vol 34 (12) ◽  
Author(s):  
范夫静 FAN Fujing ◽  
黄国勤 HUANG Guoqin ◽  
宋同清 SONG Tongqing ◽  
曾馥平 ZENG Fuping ◽  
彭晚霞 PENG Wanxia ◽  
...  
Keyword(s):  
Microbial Biomass ◽  
Spatial Heterogeneity ◽  
Soil Microbial Biomass ◽  
Southwest China ◽  
Microbial Biomass Carbon ◽  
Karst Region ◽  
Biomass Carbon ◽  
Nitrogen And Phosphorus ◽  
Soil Microbial ◽  
Sloping Field

MICROBIAL BIOMASS AND EXTRACTABLE SULFATE SULFUR LEVELS IN NATIVE AND CULTIVATED SOILS AS INFLUENCED BY AIR-DRYING AND REWETTING

1989 ◽  
Vol 69 (4) ◽  
pp. 889-894 ◽  
Author(s):  
V. V. S. R. GUPTA ◽  
J. J. GERMIDA
Keyword(s):  
Microbial Biomass ◽  
Key Words ◽  
Microbial Activity ◽  
Microbial Biomass Carbon ◽  
Biomass Carbon ◽  
Air Drying ◽  
Sulfate Sulfur ◽  
Drying And Rewetting ◽  
Source And Sink ◽  
Cultivated Soils

Air-drying decreased (> 80%) microbial activity, microbial biomass carbon (MB-C) and sulfur (MB-S) levels of both native and cultivated soils. This resulted in a flush (~ 4 μg g−1) in the 0.01 M CaCl2 extractable SO4-S. Rewetting soils restored microbial activity and biomass contents to their original levels, but this led to immobilization of the SO4-S. Restoration of the MB-S levels was slower than MB-C levels. Thus, during drying and rewetting cycles, the MB-S pool acts as both a source and sink for the SO4-S pool in soil. Key words: Microbial activity, microbial biomass sulfur, extractable sulfate sulfur

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