Microcalorimetric study of the effects of long-term fertilization on soil microbial activity in a wheat field on the Loess Plateau

Ecotoxicology ◽  
2014 ◽  
Vol 23 (10) ◽  
pp. 2035-2040 ◽  
Author(s):  
Qi Zhang ◽  
Xiaomei Liu ◽  
Xiaojun Ma ◽  
Jian Fang ◽  
Tinglu Fan ◽  
...  
Keyword(s):  
Microbial Activity ◽  
Loess Plateau ◽  
Soil Microbial Activity ◽  
The Loess Plateau ◽  
Wheat Field ◽  
Soil Microbial

Rhizosphere soil microbial activity under different vegetation types on the Loess Plateau, China

Geoderma ◽  
2011 ◽  
Vol 161 (3-4) ◽  
pp. 115-125 ◽  
Author(s):  
Chao Zhang ◽  
Guobin Liu ◽  
Sha Xue ◽  
Zilin Song
Keyword(s):  
Microbial Activity ◽  
Loess Plateau ◽  
Rhizosphere Soil ◽  
Soil Microbial Activity ◽  
Vegetation Types ◽  
The Loess Plateau ◽  
Soil Microbial

scholarly journals Ant nests as a microbial hot spots in a long-term heavy metal-contaminated soils

2021 ◽  
Author(s):  
Beata Klimek ◽  
Hanna Poliwka-Modliborek ◽  
Irena M. Grześ
Keyword(s):  
Microbial Biomass ◽  
Microbial Activity ◽  
Respiration Rate ◽  
Metal Content ◽  
Soil Microbial Activity ◽  
Bulk Soil ◽  
Lasius Niger ◽  
Soil Microbial ◽  
Ant Nests

AbstractInteractions between soil fauna and soil microorganisms are not fully recognized, especially in extreme environments, such as long-term metal-polluted soils. The purpose of the study was to assess how the presence of Lasius niger ants affected soil microbial characteristics in a long-term metal-polluted area (Upper Silesia in Poland). Paired soil samples were taken from bulk soil and from ant nests and analysed for a range of soil physicochemical properties, including metal content (zinc, cadmium, and lead). Microbial analysis included soil microbial activity (soil respiration rate), microbial biomass (substrate-induced respiration rate), and bacteria catabolic properties (Biolog® ECO plates). Soil collected from ant nests was drier and was characterized by a lower content of organic matter, carbon and nitrogen contents, and also lower metal content than bulk soil. Soil microbial respiration rate was positively related to soil pH (p = 0.01) and negatively to water-soluble metal content, integrated into TIws index (p = 0.01). Soil microbial biomass was negatively related to TIws index (p = 0.04). Neither soil microbial activity and biomass nor bacteria catabolic activity and diversity indices differed between bulk soil and ant nests. Taken together, ant activity reduced soil contamination by metals in a microscale which support microbial community activity and biomass but did not affect Biolog® culturable bacteria.

Soil Microbial and Enzyme Properties as Affected by Long-Term Exposure to Phthalate Esters

2013 ◽  
Vol 726-731 ◽  
pp. 3653-3656 ◽  
Author(s):  
Hui Lun Chen ◽  
Jun Yao ◽  
Fei Wang
Keyword(s):  
Microbial Activity ◽  
Soil Microorganisms ◽  
Phthalate Esters ◽  
Soil Microbial Activity ◽  
Inhibitory Effect ◽  
Dioctyl Phthalate ◽  
Dimethyl Phthalate ◽  
Soil Microbial ◽  
Long Term Impact

In this study, an isothermal microcalorimetry was used to demonstrate the long-term impact of dimethyl phthalate (DMP), dipropyl phthalate (DBP), dioctyl phthalate (DOP) and dicyclohexyl phthalate (DEHP) on the soil microbial activity. Generally, the toxicity order of four phthalate esters (PAEs) is DBP>DMP>DOP>DEHP. The PAEs show inhibitory effect when the soil was exposed to PAEs for 10 days and the PAEs will have a small stimulate effect after 30 days, and then the PAEs inhibit the soil microorganisms again. The effect of PAEs on soil microbial activity is almost the same as those on urease activity.

scholarly journals Changes in Soil Microbial Activity, Bacterial Community Composition and Function in a Long-Term Continuous Soybean Cropping System After Corn Insertion and Fertilization

2021 ◽  
Vol 12 ◽  
Author(s):  
Demin Rao ◽  
Fangang Meng ◽  
Xiaoyan Yan ◽  
Minghao Zhang ◽  
Xingdong Yao ◽  
...  
Keyword(s):  
Bacterial Community ◽  
Microbial Activity ◽  
High Throughput Sequencing ◽  
Bacterial Community Composition ◽  
Cropping System ◽  
Soil Microbial Activity ◽  
Functional Structure ◽  
Soil Microbial ◽  
Npk Fertilizer

Corn-soybean rotation and fertilization are common practices improving soil fertility and crop yield. Their effects on bacterial community have been extensively studied, yet, few comprehensive studies about the microbial activity, bacterial community and functional groups in a long-term continuous soybean cropping system after corn insertion and fertilization. The effects of corn insertions (Sm: no corn insertion, CS: 3 cycles of corn-soybean rotations and CCS: 2 cycles of corn-corn-soybean rotations) with two fertilization regimes (No fertilization and NPK) on bacterial community and microbial activity were investigated in a long-term field experiment. The bacterial communities among treatments were evaluated using high-throughput sequencing then bacterial functions were predicted based on the FaProTax database. Soil respiration and extracellular enzyme activities were used to assess soil microbial activity. Soil bacterial community structure was significantly altered by corn insertions (p < 0.01) and fertilization (p < 0.01), whereas bacterial functional structure was only affected by corn insertion (p < 0.01). The activities of four enzymes (invertase, β-glucosidase, β-xylosidase, and β-D-1,4-cellobiohydrolase) involved in soil C cycling were enhanced by NPK fertilizer, and were also enhanced by corn insertions except for the invertase and β-xylosidase under NPK fertilization. NPK fertilizer significantly improved soil microbial activity except for soil metabolic quotient (qCO2) and the microbial quotient under corn insertions. Corn insertions also significantly improved soil microbial activity except for the ratio of soil induced respiration (SIR) to basal respiration (BR) under fertilization and the qCO2 was decreased by corn insertions. These activity parameters were highly correlated with the soil functional capability of aromatic compound degradation, which was the main predictors of bacterial functional structure. In general, the combination of soil microbial activity, bacterial community and corresponding functional analysis provided comprehensive insights into compositional and functional adaptations to corn insertions and fertilization.

Long-term effects of vegetational restoration on soil microbial communities on the Loess Plateau of China

2016 ◽  
Vol 24 (6) ◽  
pp. 794-804 ◽  
Author(s):  
Lie Xiao ◽  
Guo-bin Liu ◽  
Jiao-yang Zhang ◽  
Sha Xue
Keyword(s):  
Microbial Communities ◽  
Loess Plateau ◽  
Soil Microbial Communities ◽  
Long Term Effects ◽  
The Loess Plateau ◽  
Soil Microbial

Soil Microbial Activity During Secondary Vegetation Succession in Semiarid Abandoned Lands of Loess Plateau

Pedosphere ◽  
2009 ◽  
Vol 19 (6) ◽  
pp. 735-747 ◽  
Author(s):  
Jin-Ping JIANG ◽  
You-Cai XIONG ◽  
Hong-Mei JIANG ◽  
De-You YE ◽  
Ya-Jie SONG ◽  
...  
Keyword(s):  
Microbial Activity ◽  
Loess Plateau ◽  
Soil Microbial Activity ◽  
Vegetation Succession ◽  
Soil Microbial ◽  
Secondary Vegetation ◽  
Abandoned Lands
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