Interactive effects of biochar and AMF on plant growth and greenhouse gas emissions from wetland microcosms

Geoderma ◽  
2019 ◽  
Vol 346 ◽  
pp. 11-17 ◽  
Author(s):  
Jin-Feng Liang ◽  
Jing An ◽  
Jun-Qin Gao ◽  
Xiao-Ya Zhang ◽  
Ming-Hua Song ◽  
...  
Keyword(s):  
Plant Growth ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Interactive Effects ◽  
Gas Emissions

A proposed approach to estimate and reduce net greenhouse gas emissions from whole farms

2006 ◽  
Vol 86 (3) ◽  
pp. 401-418 ◽  
Author(s):  
H H Janzen ◽  
D A Angers ◽  
M. Boehm ◽  
M. Bolinder ◽  
R L Desjardins ◽  
...  
Keyword(s):  
Climate Change ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Key Words ◽  
Greenhouse Gas Mitigation ◽  
Interactive Effects ◽  
Gas Emissions ◽  
The Past ◽  
Parallel Streams ◽  
Farm Types

Greenhouse gas emissions from farms can be suppressed in two ways: by curtailing the release of these gases (especially N2O and CH4), and by storing more carbon in soils, thereby removing atmospheric CO2. But most practices have multiple interactive effects on emissions throughout a farm. We describe an approach for identifying practices that best reduce net, whole-farm emissions. We propose to develop a “Virtual Farm”, a series of interconnected algorithms that predict net emissions from flows of carbon, nitrogen, and energy. The Virtual Farm would consist of three elements: descriptors, which characterize the farm; algorithms, which calculate emissions from components of the farm; and an integrator, which links the algorithms to each other and the descriptors, generating whole-farm estimates. Ideally, the Virtual Farm will be: boundary-explicit, with single farms as the fundamental unit; adaptable to diverse farm types; modular in design; simple and transparent; dependent on minimal, attainable inputs; internally consistent; compatible with models developed elsewhere; and dynamic (“seeing”into the past and the future). The Virtual Farm would be constructed via two parallel streams - measurement and modeling - conducted iteratively. The understanding built into the Virtual Farm may eventually be applied to issues beyond greenhouse gas mitigation. Key words: CO2, N2O, CH4, agroecosystems, models, climate change

Evaluation of constructed wetlands by wastewater purification ability and greenhouse gas emissions

2007 ◽  
Vol 56 (3) ◽  
pp. 49-55 ◽  
Author(s):  
P. Gui ◽  
R. Inamori ◽  
M. Matsumura ◽  
Y. Inamori
Keyword(s):  
Plant Growth ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Constructed Wetlands ◽  
Constructed Wetland ◽  
Seasonal Changes ◽  
Free Water ◽  
Domestic Wastewater ◽  
Pollutant Removal ◽  
Gas Emissions

Domestic wastewater is a significant source of nitrogen and phosphorus, which cause lake eutrophication. Among the wastewater treatment technologies, constructed wetlands are a promising low-cost means of treating point and diffuse sources of domestic wastewater in rural areas. However, the sustainable operation of constructed wetland treatment systems depends upon a high rate conversion of organic and nitrogenous loading into their metabolic gaseous end products, such as N2O and CH4. In this study, we examined and compared the performance of three typical types of constructed wetlands: Free Water Surface (FWS), Subsurface Flow (SF) and Vertical Flow (VF) wetlands. Pollutant removal efficiency and N2O and CH4 emissions were assessed as measures of performance. We found that the pollutant removal rates and gas emissions measured in the wetlands exhibited clear seasonal changes, and these changes were closely associated with plant growth. VF wetlands exhibited stable removal of organic pollutants and NH3-N throughout the experiment regardless of season and showed great potential for CH4 adsorption. SF wetlands showed preferable T-N removal performance and a lower risk of greenhouse gas emissions than FWS wetlands. Soil oxidation reduction potential (ORP) analysis revealed that water flow structure and plant growth influenced constructed wetland oxygen transfer, and these variations resulted in seasonal changes of ORP distribution inside wetlands that were accompanied by fluctuations in pollutant removal and greenhouse gas emissions.

scholarly journals From toilet to agriculture: Fertilization with microalgal biomass from wastewater impacts the soil and rhizosphere active microbiomes, greenhouse gas emissions and plant growth

2020 ◽  
Vol 161 ◽  
pp. 104924 ◽  
Author(s):  
Afnan Khalil Ahmad Suleiman ◽  
Késia Silva Lourenço ◽  
Callum Clark ◽  
Ronildson Lima Luz ◽  
Gustavo Henrique Ribeiro da Silva ◽  
...  
Keyword(s):  
Plant Growth ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Microalgal Biomass ◽  
Gas Emissions

Biochar, hydrochar and uncarbonized feedstock application to permanent grassland—Effects on greenhouse gas emissions and plant growth

2014 ◽  
Vol 191 ◽  
pp. 39-52 ◽  
Author(s):  
Sonja Schimmelpfennig ◽  
Christoph Müller ◽  
Ludger Grünhage ◽  
Christian Koch ◽  
Claudia Kammann
Keyword(s):  
Plant Growth ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Gas Emissions ◽  
Permanent Grassland

scholarly journals Relevance of Plant Growth Promoting Microorganisms and Their Derived Compounds, in the Face of Climate Change

Agronomy ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 1179
Author(s):  
Judith Naamala ◽  
Donald L. Smith
Keyword(s):  
Climate Change ◽  
Plant Growth ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Crop Production ◽  
Current Knowledge ◽  
Microbial Consortia ◽  
Gas Emissions ◽  
Plant Growth Promoting ◽  
Growth Promoting

Climate change has already affected food security in many parts of the world, and this situation will worsen if nothing is done to combat it. Unfortunately, agriculture is a meaningful driver of climate change, through greenhouse gas emissions from nitrogen-based fertilizer, methane from animals and animal manure, as well as deforestation to obtain more land for agriculture. Therefore, the global agricultural sector should minimize greenhouse gas emissions in order to slow climate change. The objective of this review is to point out the various ways plant growth promoting microorganisms (PGPM) can be used to enhance crop production amidst climate change challenges, and effects of climate change on more conventional challenges, such as: weeds, pests, pathogens, salinity, drought, etc. Current knowledge regarding microbial inoculant technology is discussed. Pros and cons of single inoculants, microbial consortia and microbial compounds are discussed. A range of microbes and microbe derived compounds that have been reported to enhance plant growth amidst a range of biotic and abiotic stresses, and microbe-based products that are already on the market as agroinputs, are a focus. This review will provide the reader with a clearer understanding of current trends in microbial inoculants and how they can be used to enhance crop production amidst climate change challenges.

scholarly journals Microalgae biofilm in soil: Greenhouse gas emissions, ammonia volatilization and plant growth

2017 ◽  
Vol 574 ◽  
pp. 1640-1648 ◽  
Author(s):  
Jackeline de Siqueira Castro ◽  
Maria Lúcia Calijuri ◽  
Paula Peixoto Assemany ◽  
Paulo Roberto Cecon ◽  
Igor Rodrigues de Assis ◽  
...  
Keyword(s):  
Plant Growth ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Ammonia Volatilization ◽  
Gas Emissions
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