Impact of nitrogen addition on growth and carbon sequestration potential of Syzygium cumini under different carbon dioxide environment conditions

2021 ◽  
Author(s):  
L. Arul Pragasan ◽  
K.P. Ganesh
Keyword(s):  
Carbon Dioxide ◽  
Carbon Sequestration ◽  
Nitrogen Addition ◽  
Syzygium Cumini ◽  
Carbon Sequestration Potential ◽  
Sequestration Potential

Methane Emission and Carbon Sequestration Potential from Municipal Solid Waste Landfill, India

2021 ◽  
Author(s):  
NAVEEN BP
Keyword(s):  
Carbon Dioxide ◽  
Carbon Sequestration ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Gas Production ◽  
Carbon Sequestration Potential ◽  
Sequestration Potential ◽  
Landfill Sites ◽  
Developed World ◽  
Global Carbon

Abstract The quantities of waste generation are drastically increased every day, and most of the waste is disposed off through open dump and landfilling. Methane, carbon dioxide, and nitrous oxide are major greenhouse gases (GHG’s) produced from landfill sites. However, the global warming potential of methane is 21 times higher than that of carbon dioxide. Hence, there is immense concern for utilization from landfill sites. In developing countries, the composition of municipal solid waste (MSW) has higher biodegradable waste (50–60%). This leads to emit higher GHG’s from a per ton of MSW compared to the developed world. In this study, the attempt will be made to estimate the amount of carbon stored in MSW burial in landfills. Tests were conducted in two different locations at the Mavallipura landfill. MSW samples were collected for every meter interval (1-2m, 2-3m & so on) up to 6m. The result shows that carbon stored in organic matter increases with depth from approximately 2.2% at 1.0 m depth to 4.8% at 6m depth. Based on MSW's carbon storage factor and data on MSW generation, global carbon sequestration from MSW burial in the Mavallipura landfill is estimated to be at least 10 million metric tons per year. Also, the study aims to quantify methane gas production from the ward levels and the Mavallipura landfill site in India.

scholarly journals Higher carbon sequestration potential and stability for deep soil compared to surface soil regardless of nitrogen addition in a subtropical forest

PeerJ ◽  
2020 ◽  
Vol 8 ◽  
pp. e9128
Author(s):  
Chang Liao ◽  
Dong Li ◽  
Lin Huang ◽  
Pengyun Yue ◽  
Feng Liu ◽  
...  
Keyword(s):  
Carbon Sequestration ◽  
Priming Effect ◽  
Surface Soil ◽  
Soil Depth ◽  
C Sequestration ◽  
Nitrogen Addition ◽  
N Addition ◽  
Deep Soil ◽  
Carbon Sequestration Potential ◽  
Sequestration Potential

Background Labile carbon input could stimulate soil organic carbon (SOC) mineralization through priming effect, resulting in soil carbon (C) loss. Meanwhile, labile C could also be transformed by microorganisms in soil as the processes of new C sequestration and stabilization. Previous studies showed the magnitude of priming effect could be affected by soil depth and nitrogen (N). However, it remains unknown how the soil depth and N availability affect the amount and stability of the new sequestrated C, which complicates the prediction of C dynamics. Methods A 20-day incubation experiment was conducted by adding 13C labeled glucose and NH4NO3 to study the effects of soil depth and nitrogen addition on the net C sequestration. SOC was fractioned into seven fractions and grouped into three functional C pools to assess the stabilization of the new sequestrated C. Results Our results showed that glucose addition caused positive priming in both soil depths, and N addition significantly reduced the priming effect. After 20 days of incubation, deep soil had a higher C sequestration potential (48% glucose-C) than surface soil (43% glucose-C). The C sequestration potential was not affected by N addition in both soil depths. Positive net C sequestration was observed with higher amount of retained glucose-C than that of stimulated mineralized SOC for both soil depths. The distribution of new sequestrated C in the seven fractions was significantly affected by soil depth, but not N addition. Compared to deep soil, the new C in surface soil was more distributed in the non-protected C pool (including water extracted organic C, light fraction and sand fraction) and less distributed in the clay fraction. These results suggested that the new C in deep soil was more stable than that in surface soil. Compared to the native SOC for both soil depths, the new sequestrated C was more distributed in non-protected C pool and less distributed in biochemically protected C pool (non-hydrolyzable silt and clay fractions). The higher carbon sequestration potential and stability in deep soil suggested that deep soil has a greater role on C sequestration in forest ecosystems.

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