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Sanyal, Pranabes
- Sustainable Use of Plant Resources of Kurseong Hills, Darjeeling District
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Indian Forester, Vol 138, No 6 (2012), Pagination: 531-534Abstract
Plant resources are naturally occurring substances that are considered valuable in their relatively unmodified (natural) form. The value of such resources rest in the amount of the material available and the demand for it. Both extraction of the basic resource and refining it into a purer, directly usable form are generally considered natural-resource activities, even though the latter may not necessarily occur near the former. Conservation and sustainable use of plant resources means an occurrence of improvement by virtue of preventing loss or injury and careful management of the plant resources. The management process includes optimum utilization of natural resources in a scientific manner for the betterment of man and environment and for sustainable development.Keywords
Plant Resources, Plain Forest, Hill Forest, Medicinal Plants, Economic Plants, Sustainable Use
- High Cadmium Contamination at the Gateway to Sundarban Ecosystem Driven by Kolkata Metropolitan Sewage in India
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1 School of Oceanographic Studies, Jadavpur University, 188 Raja S.C. Mullick Road, Kolkata 700 032, IN
1 School of Oceanographic Studies, Jadavpur University, 188 Raja S.C. Mullick Road, Kolkata 700 032, IN
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Current Science, Vol 110, No 3 (2016), Pagination: 386-391Abstract
Cr, Pb, Zn, Cd, Ni, Cu, Co and Fe content in the surface sediments was studied at three sites along a 20 km stretch on the Bidyadhari River (situated at the gateway to Indian Sundarban mangrove ecosystem) starting from the sewage outfall zone of the Kolkata metropolis (northern limit of Sundarban) during the dry (March) and wet (August) seasons in the year 2011. The concentration levels of the heavy metals (mg kg-1) were in the following order: Fe (30399 ± 3679) > Cr (68.16 ± 39.28) > Zn (61.33 ± 10.47) > Ni (32.50 ± 4.79) > Cu (27.67 ± 6.59) > Pb (19.69 ± 5.20) > Co (15.23 ± 4.39) > Cd (1.70 ± 0.63). Computation of pollution load index comprising all the heavy metals was found higher during the wet season, mainly due to the enhanced surface run-off led by monsoonal rain. Concentrations of Cr and Co were found higher than the world average in a few cases (especially during wet season); however, computation of pollution indices like contamination factors, enrichment ratio and geoaccumulation index exhibited extremely high Cd contamination in all the sites and during both seasons.Keywords
Cadmium, Contamination, Heavy Metals, Metropolitan Sewage, Pollution Load Index.Full Text
References
- Li, Z., Ma, Z., van der Kuijp, T. J., Yuan, Z. and Huang, L., A review of soil heavy metal pollution from mines in China: pollution and health risk assessment. Sci. Total Environ., 2014, 468, 843–853.
- Quan, S. X., Yan, B., Lei, C., Yang, F., Li, N., Xiao, X. M. and Fu, J. M., Distribution of heavy metal pollution in sediments from an acid leaching site of e-waste. Sci. Total Environ., 2014, 499, 349–355.
- Singh, K. P., Mohan, D., Singh, V. K. and Malik, A., Studies on distribution and fractionation of heavy metals in Gomti River sediments – a tributary of the Ganges, India. J. Hydrol., 2005, 312, 14–27.
- Kemble, N. E. et al., Contaminants in stream sediments from seven United States metropolitan areas: Part II – sediment toxicity to the amphipod Hyalella azteca and the midge Chironomus dilutus. Arch. Environ. Contam. Toxicol., 2013, 64, 52–64.
- Harikumar, P. S., Nasir, U. P. and Mujeebu Rahman, M. P., Distribution of heavy metals in the core sediments of a tropical wetland system. Int. J. Environ. Sci. Technol., 2009, 6, 225–232.
- Martin, J. M. and Meybeck, M., Elemental mass balance of materials carried by major world rivers. Mar. Chem., 1979, 7, 173–206.
- www.censusindia.gov.in (accessed 4 November 2011).
- Ghose, M. K., Paul, R. and Bannerjee, S. K., Assessment of the impacts of vehicular emissions on urban air quality and its management in Indian context: the case of Kolkata (Calcutta). Environ. Sci. Policy, 2004, 7, 345–351.
- Brief industrial profile of Kolkata district, West Bengal – Ministry of Micro, Small and Medium Enterprises, Government of India, http://dcmsme.gov.in/dips/KOLKATA.pdf (accessed on 25 August 2015).
- Mitra, A., Bhattacharyya, D. P. and Misra, A., The effect of environmental variables on Cr and Pb in the brackish water wetland system. Indian J. Phys. B, 1999, 73, 105–109.
- Lucas, M. F., Caldeira, M. F., Hall, A., Duarte, A. C. and Lima, C., Distribution of mercury in sediments and fishes of the Lagoon of Aveiro, Portugal. Water Sci. Technol., 1986, 18, 141–148.
- Ali, M. F. and Shakrani, S. A., A comparison of ICP-OES and UV-Vis spectrophotometer for heavy metals determination in soil irrigated with secondary treated wastewater. Int. J. Civ. Environ. Eng., 2014, 14, 8–15.
- Idera, F., Omotola, O., Paul, U. J. and Adedayo, A., Evaluation of the effectiveness of different acid digestion on sediments. IOSR J. Appl. Chem., 2014, 12, 39–47.
- Rayment, G. E. and Higginson, F. R., Electrical conductivity and soil pH. In Australian Laboratory Handbook of Soil and Water Chemical Analysis (eds Rayment, G. E. and Higginson, F. R.), Inkata Press, Melbourne, 1992, pp. 15–23.
- Nelson, D. W. and Sommers, L. E., Carbon and Organic Matter. In Methods of Soil Analysis Part 3, Chemical Methods (ed. Sparks, D. L.), Soil Science Society of America and American Society of Agronomy, Madison, Wisconsin, 1996, pp. 961–1010.
- Simex, S. A. and Helz, G. R., Regional geochemistry of trace elements in Checapeake Bay. Environ. Geol., 1981, 3, 315–325.
- Rath, P., Panda, U. C., Bhatta, D. and Sahoo, B. N., Environmental quantification of heavy metals in the sediments of the Brahmani and Nandira rivers, Orissa. J. Geol. Soc. India, 2005, 65, 487–492.
- Tomilson, D. C., Wilson, J. G., Harris, C. R. and Jeffrey, D. W., Problems in assessment of heavy metals in estuaries and the formation of pollution index. Helgol. Wiss. Meeresunters, 1980, 33, 566–575.
- Muller, G., Schwermetalle in den sediment des Rheins, Veranderungem Seit 1971. Umschau, 1979, 79, 778–783.
- Marín, V. and Olivares, G., Estacionalidad de la productividad primaria en bahía Mejillones del Sur (Chile): Una aproximación proceso-functional. Rev. Chil. Hist. Nat., 1999, 72, 629–641.
- Dekov, V. M., Subramanian, V. and Van Grieken, R., Chemical composition of riverine suspended matter and sediments from the Indian sub-continent. In Biogeochemistry of Rivers in Tropical South and Southeast Asia (eds Ittekot, V., Subramanian, V. and Annadurai, S.), Mitteilugen aus dem Geologisch-Paläontolgischen Institut der Universität, Heft 82, SCOPE Sonderband, Hamburg, 1999, pp. 99–109.
- Darmono, D. and Denton, G. R. W., Heavy metal concentrations in the banana prawn, Penaeus mergyinensis and leader prawn P. monodon in the Townsville region of Australia. Bull. Environ. Contam. Toxicol., 1990, 44, 479–486.
- http://www.cerc.usgs.gov/pubs/center/pdfdocs/91126.pdf (accessed on 6 March 2013).
- http://www.epa.gov/ttnatw01/hlthef/cadmium.html (accessed 25 August 2015).
- Gao, B., Zhou, H., Liang, X. and Tu, X., Cd isotopes as a potential source tracer of metal pollution in river sediments. Environ. Pollut., 2013, 181, 340–343.
- Waterlot, C., Bidar, G., Pelfrêne, A., Roussel, H., Fourrier, H. and Douay, F., Contamination, fractionation and availability of metals in urban soils in the vicinity of former lead and zinc smelters, France. Pedosphere, 2013, 23, 143–159.
- Jain, C. K., Metal fractionation study on bed sediments of river Yamuna, India. Water Res., 2004, 38, 569–578.
- Waldichuk, M., Biological availability of metals to marine organisms. Mar. Pollut. Bull., 1985, 16, 7–11.
- Chatterjee, M., Massolo, S., Sarkar, S. K., Bhattacharya, A. K., Bhattacharya, B. D., Satpathy, K. K. and Saha, S., An assessment of trace element contamination in intertidal sediment cores of Sunderban mangrove wetland, India for evaluating sediment quality guidelines. Environ. Monit. Assess., 2009, 150, 307–322.
- Topalián, M. L., Castaňé, P. M., Rovedatti, M. G. and Salibián, A., Principal component analysis of dissolved heavy metals in water of the Reconquista River (Buenos Aires, Argentina). Bull. Environ. Contam. Toxicol., 1999, 63, 484–490.
- Vermicomposting of Elephant Dung-Maiden Success
Abstract Views :253 |
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Authors
Affiliations
1 School of Oceanographic Studies, Jadavpur University, Kolkata - 700 032, IN
1 School of Oceanographic Studies, Jadavpur University, Kolkata - 700 032, IN
Source
Indian Science Cruiser, Vol 24, No 4 (2010), Pagination: 19-21Abstract
In Pilkhanas of North Bengal, slow decomposition rate of fiber rich elephant dung causes various serious problems of disposal. Dung-dump burning creates air pollution. Owing to the presence of Phenol crystals elephant dung is highly corrosive. Heaps of elephant dung form mosquito den. In this experiment, elephant dung has been used to prepare ‘vermicompost’ which has very high demand in tea-gardens, by using EM (Effective Microbes) solution and exotic earthworms like Eudrilus eugeniae, Eisinia fetida and indigenous earthworm like Perionix excavatus together with the use of indigenous bacteria and fungal culture that grows at the soil and dung interface . This experiment thus, not only helps in mitigating the management problems of pilkhana but also improves the socio-economic condition of local people so that they get interested about the implementation of this project.