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1دورية أكاديمية
المصدر: Indian Journal of Ecology 50(4):918-925. 2023
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2دورية أكاديمية
المؤلفون: Chanda, Rajdeep, Singh, Salam Suresh, Singh, Ngangbam Somen, Upadhyay, Keshav Kumar, Tripathi, Shri Kant
المساهمون: Department of Science and Technology, Ministry of Science and Technology, India
المصدر: Trees, Forests and People ; volume 15, page 100491 ; ISSN 2666-7193
مصطلحات موضوعية: Management, Monitoring, Policy and Law, Economics, Econometrics and Finance (miscellaneous), Forestry
الإتاحة: https://doi.org/10.1016/j.tfp.2023.100491Test
https://api.elsevier.com/content/article/PII:S2666719323001231?httpAccept=text/xmlTest
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3دورية أكاديمية
المؤلفون: Balraju, Wagmare, Upadhyay, Keshav Kumar, Tripathi, S. K.
المصدر: Water, Air & Soil Pollution; Dec2023, Vol. 234 Issue 12, p1-18, 18p
مصطلحات موضوعية: TREE-rings, TEAK, TREE growth, MAGNOLIAS, TREE age, FIR
مصطلحات جغرافية: MIZORAM (India)
الشركة/الكيان: WORLD Health Organization
مستخلص: The annual tree rings are used to reconstruct the history of the past climate and the impact of climatic and environmental changes on tree growth. Several conifer and broad leaf tree species (e,g. Abies densa, Larix griffithiana, Pinus merkusii, P. kesiya, P. wallichiana, Quercus serrata, Toona ciliata, and Tectona grandis) have been used for diverse dendrochrological studies in Northeast India (NEI). Tree rings act as bio-indicator of changes in soil chemistry due to anthropogenic activities in urban and peri-urban areas because of rapid population growth, agricultural intensification, and industrialization. Most of the earlier studies in NEI are available with respect to the climate-tree growth relationship, however, aspects like tree ring relations with pollution history have not been attempted so far. Considering this gap, the present study has been carried out to investigate the concentration of toxic elements in tree rings. Particularly in this study, we used Magnolia champaca (Champak) tree rings to reconstruct the temporal distribution of 7 elements (Zn, Pb, Fe, Cu, Ni, Ca, and Mn) at the Tuirial dumping site in Aizawl, Mizoram. A total of 20 trees were sampled by taking two cores from each, and the dated samples covered a period of two decades from 1999 to 2019. We used an Atomic Absorption Spectrometer (AAS) to quantify concentrations of toxic elements in the tree-rings over different years. The findings indicated a rising pattern of elements in conjunction with increasing tree age, for example, the largest concentration of harmful elements was located in recent year ring growths. The range of element accumulations was: 20.46 to 30.10 mg/kg for Fe, 16.19 to 28.24 mg/kg for Mn, 13.86 to 27.4 mg/kg for Zn, 9.02 to 17.08 mg/kg for Ni, 6.08 to 14.69 mg/kg for Cu, 7.33 to 14.35 mg/kg for Ca, and 6.92 to 14.26 mg/kg for Pb. The present study indicated that Pb, Fe, Ni, and Cu exceeded the acceptable thresholds set by the World Health Organization (WHO) for harmful components in the plant. Based on the findings, we recommend Magnolia champaca as a suitable species for plantation in degraded/polluted areas as an efficient biocontrol agent for the removal of toxic elements. [ABSTRACT FROM AUTHOR]
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4دورية أكاديمية
المساهمون: Department of Biotechnology, Ministry of Science and Technology, India
المصدر: Heliyon ; volume 7, issue 4, page e06834 ; ISSN 2405-8440
مصطلحات موضوعية: Multidisciplinary
الإتاحة: https://doi.org/10.1016/j.heliyon.2021.e06834Test
https://api.elsevier.com/content/article/PII:S2405844021009373?httpAccept=text/xmlTest
https://api.elsevier.com/content/article/PII:S2405844021009373?httpAccept=text/plainTest -
5دورية أكاديمية
المصدر: Ecological Indicators ; volume 129, page 107888 ; ISSN 1470-160X
مصطلحات موضوعية: Ecology, Ecology, Evolution, Behavior and Systematics, General Decision Sciences
الإتاحة: https://doi.org/10.1016/j.ecolind.2021.107888Test
https://api.elsevier.com/content/article/PII:S1470160X21005537?httpAccept=text/xmlTest
https://api.elsevier.com/content/article/PII:S1470160X21005537?httpAccept=text/plainTest -
6دورية أكاديمية
المصدر: Environment & Ecology; Oct-Dec2023, Vol. 41 Issue 4B, p2766-2774, 9p
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7دورية أكاديمية
المؤلفون: Lalthakimi, C., Joshi, Mamta, Monsang, Ng. Polbina, Singh, Ngangbam Somen, Vanlalfakawma, David C., Upadhyay, Keshav Kumar, Tripathi, Shri Kant
المصدر: Environment & Ecology; Oct-Dec2023, Vol. 41 Issue 4B, p2701-2712, 12p
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8دورية أكاديمية
المؤلفون: Lalthakimi, C., Singh, Ngangbam Somen, Vanlalfakawma, David C., Upadhyay, Keshav Kumar, Tripathi, Shri Kant
المصدر: Environment & Ecology; Oct-Dec2023, Vol. 41 Issue 4A, p2584-2594, 11p
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9دورية أكاديمية
المصدر: Environment & Ecology; Oct-Dec2023, Vol. 41 Issue 4A, p2537-2546, 10p
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10دورية أكاديمية
المساهمون: Ministry of Tribal Affairs, Department of Science and Technology, Ministry of Science and Technology, Government of India
المصدر: Vegetos ; ISSN 2229-4473
مصطلحات موضوعية: Plant Science