Assimilating atmospheric carbon dioxide in tea gardens of northeast India

Pramanik, Prabhat; Phukan, Manabjyoti

doi:10.1016/j.jenvman.2019.109912

Cited by 13 publications

(8 citation statements)

References 18 publications

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“…Generally, the ancient tea plantations were cultivated close to tall trees and sheltered by virgin forests that contributed to the accumulation of SOM and SOC due to the higher litter derived from tea plant and other plants [34]. The higher nitrogen (N), phosphorus (P) and potassium (K) levels, particularly AN, AP and AK, ensure the sustainable development for the healthy growth of tea trees and the production of fresh tealeaves in the ancient tea plantations.…”

Section: Soil Chemicophysical Properties and Microbial Quantity In Various Tea Plantationsmentioning

confidence: 99%

HPLC and high-throughput sequencing revealed differences of tea-leaves quality components and soil microbial community structure between modern and ancient tea plantations in Lincang Region

Gao

Zhou

Wan

et al. 2022

Preprint

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BackgroundAncient tea plantations with an age over 100 years still reserved at Mengku Town in Lincang Region of Yunan Province, China. However, the characteristic of soil chemicophysical properties and microbial ecosystem in the ancient tea plantations and their impact on tea-leaves chemical components remained unclear. Tea-leaves chemical components including amino acids, phenolic compounds and purine alkaloids, and soil chemicophysical properties including pH, cation exchange capacity (CEC), soil organic matter (SOM), soil organic carbon (SOC), total total nitrogen (TN), total phosphorus (TP), total potassium (TK), alkali-hydrolyzable nitrogen (AN), available phosphorous (AP) and available potassium (AK), and microbial community structure of modern and ancient tea plantations in five geographic sites (i.e. Bingdao, Baqishan, Banuo, Dongguo and Jiulong) were determined by high performance liquid chromatography (HPLC) and high-throughput sequencing, respectively. ResultsTea-leaves chemical components, soil chemicophysical properties and microbial community structures including bacterial and fungal community abundance and diversity evaluated by Chao 1 and Shannon varied with geographic location and tea plantation type. The ancient tea plantations possessed significantly (P<0.05) higher free amino acids, gallic acid, caffeine and EGC in tea-leaves, as well as soil fertility. The bacterial community structure kept stable, while fungal community abundance and diversity significantly (P<0.05) increased in ancient tea plantation because of higher soil fertility and lower pH. The long-term plantation in natural cultivation way significantly (P<0.05) improved the abundances of Nitrospirota, Methylomirabilota, Ascomycota and Mortierellomycota phyla. ConclusionsDue to the natural cultivation way, the ancient tea plantations still maintained relatively higher soil fertility and complete soil microbial ecosystem, which contributed to the sustainable development with higher quality in tea-leaves.

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Section: Soil Chemicophysical Properties and Microbial Quantity In Various Tea Plantationsmentioning

confidence: 99%

HPLC and high-throughput sequencing revealed differences of tea-leaves quality components and soil microbial community structure between modern and ancient tea plantations in Lincang Region

Gao

Zhou

Wan

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…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%

“…Li et al [24] and Zhang et al [25] evaluated carbon storage in China's tea plantations. Pramanik and Phukan [26] explored the ability of assimilating atmospheric CO 2 in tea gardens of northeast India. Kamau et al [27] calculated the carbon and nutrient stocks of tea plantations, and Mishra and Sarkar [28] analyzed the relationship between the total organic carbon and soil carbon pools under different land management systems.…”

Section: Introductionmentioning

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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“…It is inferred that with increasing CO 2 , the adversities of extreme climate events such as heatwave, drought, and frost will be increasing, which will variously affect tea yield, quality and ecosystem (Li et al, 2018(Li et al, , 2019aAhmed et al, 2019). Nonetheless, tea plantations play a significant role in CO 2 sequestration and thus tea gardens can be useful in mitigating global warming (Pramanik and Phukan, 2020).…”

Section: Introductionmentioning

confidence: 99%

“…However, recently more attention has been paid to the issue and inter-governmental initiatives have been taken to address climate change effects on tea under the umbrella of the Food and Agriculture Organization of the United Nations (Han et al, 2018). Several research papers on the effect of CO 2 on tea yield and quality were published in last 3 years (Hui et al, 2016;Li et al, 2016Li et al, , 2017Li et al, , 2018Li et al, , 2019aRoy et al, 2019;Pramanik and Phukan, 2020). However, a comprehensive review of the effect of elevated CO 2 on tea plants is still missing.…”

Section: Introductionmentioning

confidence: 99%

Physiological and Defense Responses of Tea Plants to Elevated CO2: A Review

Ahammed

Liu

et al. 2020

Front. Plant Sci.

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Rising atmospheric carbon dioxide, an important driver of climate change, has multifarious effects on crop yields and quality. Despite tremendous progress in understanding the mechanisms of plant responses to elevated CO 2 , only a few studies have examined the CO 2-enrichment effects on tea plants. Tea [Camellia sinensis (L.)], a non-deciduous woody perennial plant, operates massive physiologic, metabolic and transcriptional reprogramming to adapt to increasing CO 2. Tea leaves elevate photosynthesis when grown at CO 2-enriched environment which is attributed to increased maximum carboxylation rate of RuBisCO and maximum rates of RuBP regeneration. Elevated CO 2-induced photosynthesis enhances the energy demand which triggers respiration. Stimulation of photosynthesis and respiration by elevated CO 2 promotes biomass production. Moreover, elevated CO 2 increases total carbon content, but it decreases total nitrogen content, leading to an increased ratio of carbon to nitrogen in tea leaves. Elevated CO 2 alters the tea quality by differentially influencing the concentrations and biosynthetic gene expression of tea polyphenols, free amino acids, catechins, theanine, and caffeine. Signaling molecules salicylic acid and nitric oxide function in a hierarchy to mediate the elevated CO 2-induced flavonoid biosynthesis in tea leaves. Despite enhanced synthesis of defense compounds, tea plant defense to some insects and pathogens is compromised under elevated CO 2. Here we review the physiological and metabolic responses of tea plants to elevated CO 2. In addition, the potential impacts of elevated CO 2 on tea yield and defense responses are discussed. We also show research gaps and critical research areas relating to elevated CO 2 and tea quality for future study.

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Assimilating atmospheric carbon dioxide in tea gardens of northeast India

Cited by 13 publications

References 18 publications

HPLC and high-throughput sequencing revealed differences of tea-leaves quality components and soil microbial community structure between modern and ancient tea plantations in Lincang Region

HPLC and high-throughput sequencing revealed differences of tea-leaves quality components and soil microbial community structure between modern and ancient tea plantations in Lincang Region

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

Physiological and Defense Responses of Tea Plants to Elevated CO2: A Review

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