scholarly journals Soil microbial metabolism and invertase activity under crop rotation and no-tillage in North China

2013 ◽  
Vol 59 (No. 11) ◽  
pp. 511-516 ◽  
Author(s):  
Hu JL ◽  
Zhu AN ◽  
Wang JH ◽  
J. Dai ◽  
Wang JT ◽  
...  
Keyword(s):  
Microbial Biomass ◽  
North China ◽  
Soil Microbial Biomass ◽  
Invertase Activity ◽  
Metabolic Quotient ◽  
Microbial Biomass C ◽  
No Tillage ◽  
Soil Microbial Biomass C ◽  
Soil Microbial ◽  
Microbial Metabolic Quotient

Soil samples were collected at both jointing and maturing stages of maize and wheat to compare the effects of 4-year no-tillage (NT) and conventional tillage (CT) on seasonal variations of microbial biomass carbon (C), metabolic quotient, and invertase activity in a sandy loam soil in North China. Soil invertase activity significantly increased (P < 0.05) from summer to spring of the next year and then significantly decreased (P < 0.05) from spring to summer. With a delay of about 3 months, soil microbial biomass C and basal respiration altered in a similar pattern, while microbial metabolic quotient changed on the contrary. Compared with CT, the NT practice significantly increased (P < 0.05) soil organic C content, and tended to result in higher soil microbial biomass C and invertase activity, as well as lower soil microbial metabolic quotient, especially at the jointing stage of maize. Our results indicated that NT might play an important role in the improvement of soil microbial efficiency, especially at the maize seedling season.

Dynamics of soil microbial biomass C, N and P in disturbed and undisturbed stands of a tropical wet-evergreen forest

2004 ◽  
Vol 40 (3-4) ◽  
pp. 113-121 ◽  
Author(s):  
A.R. Barbhuiya ◽  
A. Arunachalam ◽  
H.N. Pandey ◽  
K. Arunachalam ◽  
M.L. Khan ◽  
...  
Keyword(s):  
Microbial Biomass ◽  
Soil Microbial Biomass ◽  
Evergreen Forest ◽  
Microbial Biomass C ◽  
Soil Microbial Biomass C ◽  
Soil Microbial

Effects of vegetation types on soil microbial biomass C, N, P on the Loess Hilly Area

2013 ◽  
Vol 33 (18) ◽  
pp. 5615-5622 ◽  
Author(s):  
赵彤 ZHAO Tong ◽  
闫浩 YAN Hao ◽  
蒋跃利 JIANG Yueli ◽  
黄懿梅 HUANG Yimei ◽  
安韶山 AN Shaoshan
Keyword(s):  
Microbial Biomass ◽  
Soil Microbial Biomass ◽  
Microbial Biomass C ◽  
Vegetation Types ◽  
Soil Microbial Biomass C ◽  
Hilly Area ◽  
Soil Microbial

Seasonal dynamics of soil microbial biomass C and N in different habitats in Zhalong Wetland

2014 ◽  
Vol 34 (13) ◽  
Author(s):  
张静 ZHANG Jing ◽  
马玲 MA Ling ◽  
丁新华 DING Xinhua ◽  
陈旭日 CHEN Xuri ◽  
马伟 MA Wei
Keyword(s):  
Microbial Biomass ◽  
Seasonal Dynamics ◽  
Soil Microbial Biomass ◽  
Microbial Biomass C ◽  
Soil Microbial Biomass C ◽  
Soil Microbial ◽  
Zhalong Wetland ◽  
C And N

Effects of Aridity and Salinization on Soil Microbial Biomass C in a Desert Ecosystem

2014 ◽  
Vol 1073-1076 ◽  
pp. 638-642
Author(s):  
Hai Ying Guan ◽  
Xin Zhao
Keyword(s):  
Soil Moisture ◽  
Microbial Biomass ◽  
Soil Microbial Biomass ◽  
Salt Content ◽  
Bare Soil ◽  
Desert Ecosystem ◽  
Microbial Biomass C ◽  
Soil Microbial Biomass C ◽  
Soil Microbial ◽  
Soil Salt Content

In this study, we measured soil microbial biomass C (SMBC) under four different land cover types (canopy, litter, lichen and bare soil) to determine the effects of aridity and salinization on SMBC of a typical desert ecosystem. Results showed that higher SMBC with lower soil salt content and higher soil moisture were found in general if with vegetation, and the SMBC under canopy was especially higher than any other land cover types, which was near double of that of bare soil (115.34μg C g-1 soil vs. 61.88μg C g-1 soil). Linear regression analysis indicated that soil SMBC were positively correlated (p<0.01,r =0.899) with soil moisture but negatively correlated (r =-0.784, p<0.01) with soil salt content. These relationships may represent an evolutionary process, aiding in the conservation of essential vegetation in a fragile desert ecosystem.

Sign in / Sign up

Export Citation Format

Share Document