Algorithmic derivation of CO2 assimilation based on some physiological parameters of tea bushes in North-East India

Phukan, Manabjyoti; Savapondit, Debojit; Hazra, Anjan; Das, Sauren; Pramanik, Prabhat

doi:10.1016/j.ecolind.2018.03.091

Cited by 13 publications

(9 citation statements)

References 15 publications

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“…Some specific physical parameters determines CO assimilation 2 in tea plants eg. CO flows in leaves are mostly related to 2 photosynthesis, respiration and decomposition of organic matter and are largely conditioned by physical processes ( (Phukan et al, 2018;Nunes et al 2020). In the present study, a significant difference was also observed in terms of stomatal conductance of tea plants (Table 3).…”

Section: Resultsmentioning

confidence: 99%

Carbon sequestration potential under tea based cropping system

Alom¹,

Das²,

Baruah³

et al. 2021

JEB

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Aim: To study the carbon sequestration process in tea based plantation system and to identify more potential carbon sequestration system amongst the tea based cropping system by studying carbon storage in different components of the plantation system. Methodology: The experiment was carried out in the Experimental Garden for Plantation Crops of Assam Agricultural University, Jorhat, Assam. Treatments were made in an on going, long term shade experiment on mature tea bushes, adapted to three levels of shades viz. tea as monoculture; Tea based cropping system with Areca palm and Tea with Albizzia odoratissima. Results: Among different tea plantations, tea-albizzia recorded superior performance, followed by tea-areca palm plantation in respect to biomass accumulation and carbon sequestration. Similarly, higher carbon stock was found in tea-albizzia plantations along with other physiological and edaphic parameters related to carbon sequestration attributed to an increase in carbon stock. Interpretation: Tea-albizzia plantation system has maximum potential for carbon offsetting from the atmosphere as well as carbon storage both above and below ground in the plantation ecosystem which might be helpful for future carbon management and economy as a whole.

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Section: Resultsmentioning

confidence: 99%

Carbon sequestration potential under tea based cropping system

Alom¹,

Das²,

Baruah³

et al. 2021

JEB

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“…The CO 2 assimilation potential of tea bushes was estimated by close‐chamber method following the method of Phukan et al . For determining CO 2 absorption by tea bushes under in situ condition, battery‐operated CO 2 ‐sensors (supplier: http://co2meter.com, Ormond Beach, FL, USA, model: AZ77535) were used (Supporting Information Fig.…”

Section: Methodsmentioning

confidence: 99%

“…The CO 2 sequestration potential in cropland, forest, grassland and wetland was estimated within the ranges 448.4–1345.2, 112.1–8743.8, 269.04–2242 and 4999.7–8317.8 kg ha −1 yr −1 , respectively . Phukan et al . estimated the CO 2 assimilation potential of tea bushes under sub‐tropical humid condition.…”

Section: Introductionmentioning

confidence: 99%

Enhanced microbial respiration due to carbon sequestration in pruning litter incorporated soil reduced the net carbon dioxide flux from atmosphere to tea ecosystem

Pramanik

Phukan

2019

J Sci Food Agric

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BACKGROUND: Tea (Camellia sinensis L.) bushes are periodically (at 3-4 year intervals) pruned (cut from top) to maintain vegetative growth stage and constant height. Plant residues (prunings litter) generated after pruning are generally left in the field as a potential source of organic matter in soil. Organic carbon (C) sequestration due to pruning litter incorporation is expected to increase microbial activity in soil. Being an evergreen plant, tea bushes assimilate atmospheric carbon dioxide (CO 2 ) throughout the year; however, the relation between decomposition of pruning litters and net CO 2 flux for tea plantation have not been studied before. The objective of this experiment was to evaluate the relation between organic C accumulation and microbial respiration in pruning litters incorporated soil and its subsequent effect on the net CO 2 flux from the atmosphere to tea plantation. RESULTS: Tea bushes assimilated 1878.2-2371.2 kg CO 2 ha −1 from the atmosphere within December to November; however, pruned bushes assimilated 1451.7-1840.8 kg CO 2 ha −1 within the same period. Decomposition of pruning litters added organic matter in soil, which was mostly accumulated in larger soil aggregates having 2.0-0.25 mm size. Such organic matter accumulation significantly increased microbial respiration in those aggregates, which in turn increased the overall rate of CO 2 emission from soil to the atmosphere. CONCLUSION: Decomposition of pruning litters leads to emission of 426.5-530.4 kg CO 2 ha −1 from soil. Hence, pruned areas recorded relatively lower (16.0-27.4%) net CO 2 flux from the atmosphere to tea ecosystem as compared to unpruned tea bushes.

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“…In Sri Lanka, Wijeratne et al [62] assessed the carbon sequestration potential of tea plantations as an option for mitigating climate change and making a greener economy. As for India, Phukan et al [63] and Pramanik and Phukan [26] estimated CO 2 sequestration potential in tea gardens of the northeast, and the potential to mitigate global warming during tea cultivation, but these studies only made some measurements of CO 2 assimilation in tea and tea bushes, not considering the soil. In addition, Mishra and Sarkar [28] studied the relationship between total organic carbon and soil carbon pools under different land management systems, reporting useful potential of tea gardens as a C sequestering land use.…”

Section: Carbon Sink Of the Tea Plantation Ecosystemmentioning

confidence: 99%

China’s Tea Industry: Net Greenhouse Gas Emissions and Mitigation Potential

et al. 2021

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Tea is an important cash crop and a beverage that is widely consumed across the world. In China (the largest producer of tea), the industry is growing, and there is a need to understand current greenhouse gas (GHG) emissions and sequestrations and the potential for mitigation so that climate action can be strategically undertaken. Life cycle assessment and carbon footprint methods were used to quantify emissions in tea cultivation and processing in the 16 major producing regions for the year 2017. The system boundary was from cradle to factory gate, which was divided into three subsystems, namely agricultural materials production, tea production and tea processing. Several units of analysis were chosen: the production region (province), the production area (ha) and the product (kg loose tea), etc. Total GHG emissions were 28.75 Mt CO2eq, which were mainly attributable to energy use in tea processing (41%), fertilizer production (31.6%) and soil emissions (26.7%). This equated to 12.0 t CO2eq per ha and 10.8 kg CO2eq per kg processed tea. Production in Hubei, Yunan, Guizhou, Sichuan and Fujian provinces contributed almost two thirds of industry emissions, representing priority areas for strategic action to reduce GHG emissions. At the same time, the total carbon sink amounted to 21.37 MtCO2, representing 74.3% of total GHG emissions. The proportions stored in soil, biomass, and tea production were 49.3%, 30.0%, and 20.7%, respectively. If best recommended management practices for fertilizer application were adopted and biomass was used as a source of energy for tea processing, the GHG emissions reduction potential was 16.66 Mt CO2eq, or 58% of total emissions. The GHG emissions associated with tea production and processing in China appeared high by comparison to other regions of the world. However, considering the carbon sink and emissions reduction potential, the tea industry should be viewed as an important sector for climate action. Moreover, the potential for substantial GHG emissions reduction through the adoption of improved practices seems very realistic. There may also be additional opportunities for GHG emissions reduction through the development of organic tea cultivation systems.

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Algorithmic derivation of CO2 assimilation based on some physiological parameters of tea bushes in North-East India

Cited by 13 publications

References 15 publications

Carbon sequestration potential under tea based cropping system

Carbon sequestration potential under tea based cropping system

Enhanced microbial respiration due to carbon sequestration in pruning litter incorporated soil reduced the net carbon dioxide flux from atmosphere to tea ecosystem

China’s Tea Industry: Net Greenhouse Gas Emissions and Mitigation Potential

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