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Saxena, Abhishek
- Assessment of Carbon Storage Potential and Area under Agroforestry Systems in Gujarat Plains by Co2fix Model and Remote Sensing Techniques
Abstract Views :182 |
PDF Views:98
Authors
R. H. Rizvi
1,
Ram Newaj
1,
Rajendra Prasad
1,
A. K. Handa
1,
Badre Alam
1,
S. B. Chavan
1,
Abhishek Saxena
1,
P. S. Karmakar
1,
Amit Jain
1,
Mayank Chaturvedi
1
Affiliations
1 ICAR-Central Agroforestry Research Institute, Jhansi 284 003, IN
1 ICAR-Central Agroforestry Research Institute, Jhansi 284 003, IN
Source
Current Science, Vol 110, No 10 (2016), Pagination: 2005-2011Abstract
Agroforestry is a traditional and ancient land use practice, having deliberate integration of trees with crop and livestock components. In India, agroforestry practices are prevalent in different agro-ecological zones and occupy sizeable areas. These practices have great potential for climate change mitigation through sequestration of atmospheric CO2. Carbon sequestration potential was studied in four districts of Gujarat (Anand, Dahod, Patan and Junagarh), for which field survey was conducted to collect primary data on existing agroforestry systems. The extent of agroforestry area in these districts was estimated by sub-pixel classifier using medium resolution remote sensing data (RS-2/LISS III). By sub-pixel classifier, the highest area under agroforestry was estimated in Dahod (12.48%) followed by Junagarh district (10.95%) with an average of 9.12%. Sapota (Manilkara zapota) based agroforestry was also mapped in Junagarh district, which occupied an area of 1.13%. An accuracy of 87.2% was found by sub-pixel classifier in delineation of sapota-based agroforestry in the district. Dynamic CO2FIX model has been used to estimate total carbon (biomass + soils) and net carbon sequestered in existing agroforestry systems. Net carbon sequestered over a simulated period of 30 years in Anand, Dahod, Patan and Junagarh districts was found to be 2.70, 6.26, 1.61 and 1.50 Mg C ha-1 respectively. Total carbon stock in all four districts for baseline and simulated period of 30 years was estimated to be 2.907 and 3.251 million tonnes respectively. Thus, agroforestry systems in Gujarat have significant potential in carbon storage and trapping atmospheric CO2 into biomass and soils. Hence, CO2FIX model in conjunction with remote sensing techniques can be successfully applied for estimating carbon sequestration potential of agroforestry systems in a district or a region.Keywords
Agroforestry, Geospatial, Remote Sensing, Sub-Pixel, Tree Cover.Full Text
- Soil Organic Carbon Stock in Agroforestry Systems in Western and Southern Plateau and Hill Regions of India
Abstract Views :285 |
PDF Views:99
Authors
Ram Newaj
1,
O. P. Chaturvedi
1,
Dhiraj Kumar
1,
Rajendra Prasad
1,
R. H. Rizvi
1,
Badre Alam
1,
A. K. Handa
1,
S. B. Chavan
1,
Anil Kumar Singh
1,
Mayank Chaturvedi
1,
P. S. Karmakar
1,
Abhishek Maurya
1,
Abhishek Saxena
1,
Gargi Gupta
1,
Kedari Singh
1
Affiliations
1 ICAR-Central Agroforestry Research Institute, Jhansi 284 003, IN
1 ICAR-Central Agroforestry Research Institute, Jhansi 284 003, IN
Source
Current Science, Vol 112, No 11 (2017), Pagination: 2191-2193Abstract
The rising level of carbon dioxide (CO2) in the atmosphere is a major concern, as scientific evidences show that it is the primary cause of global warming. CO2 concentration is expected to double by the middle or end of the 21st century, with a temperature rise between 1.5°C and 4.5°C (ref. 1). The importance of agroforestry as a land-use system is receiving wider recognition not only in terms of agricultural sustainability, but also in issues related to carbon sequestration or climate change.Full Text
References
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- Impact of Rapid Urbanization on Water Quality Index in Groundwater Fed Gomati River, Lucknow, India
Abstract Views :252 |
PDF Views:86
Authors
Affiliations
1 Centre of Advanced Study in Geology, University of Lucknow, Lucknow 226 007, IN
2 Shri Ramswaroop Memorial University, Barabanki 225 003, IN
1 Centre of Advanced Study in Geology, University of Lucknow, Lucknow 226 007, IN
2 Shri Ramswaroop Memorial University, Barabanki 225 003, IN
Source
Current Science, Vol 114, No 03 (2018), Pagination: 650-654Abstract
The present communication deals with the impact of rapid urbanization of Lucknow City on Gomati River. The lower values of water quality index (WQI < 50) at upstream of the city confirm the presence of good quality water. When it leaves the city downstream the value of WQI raises to >75, indicating that the water quality has deteriorated considerably and has become unfit for human consumption. The groundwater is also polluted due to urbanization and requires immediate attention for improving the water quality of Gomati river.Keywords
Gomati River, Groundwater, Lucknow, Surface Water, Water Quality Index.Full Text
References
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- Kumari, V. and Chaurasia, G. L., Study of water quality status of Sai River in Uttar-Pradesh with Reference to Water Quality Index assessment. Int. J. Innov. Res. Sci., Eng. Technol., 2015, 4(1), 18614–18623.
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- Sources and Leaching of Nitrate Contamination in Groundwater
Abstract Views :283 |
PDF Views:102
Authors
Affiliations
1 Institute of Technology, ShriRamswaroop Memorial University, Barabanki 225 003, IN
1 Institute of Technology, ShriRamswaroop Memorial University, Barabanki 225 003, IN
Source
Current Science, Vol 118, No 6 (2020), Pagination: 883-891Abstract
Nitrate is an important and widespread contaminant of groundwater and surface water resources. Nitrate formed either by the natural processes (atmospheric fixation, lightning storms) or added through anthropogenic activities (fertilizer applications, septic tanks) enters the hydrosphere with virtual ease. In this article we review various concepts discussing the different sources behind elevated nitrate levels. Moreover, an attempt is also made towards preparing a comprehensive framework to understand the leaching of nitrate in groundwater. This framework would effectively help in understandingthe origin and dynamics controlling the fate of nitrate in groundwater, which is vital for managing the associated risks and safeguarding the water supplies.Keywords
Geogenic Sources, Groundwater Pollution, Methemoglobinemia, Mineral Weathering, Nitrate Contamination.Full Text
- Water Quality Index Assessment of Groundwater in the Central Ganga Plain with Reference to Raebareli District, Uttar Pradesh, India
Abstract Views :256 |
PDF Views:94
Authors
Affiliations
1 Institute of Technology, Shri Ramswaroop Memorial University, Barabanki 225 003, IN
1 Institute of Technology, Shri Ramswaroop Memorial University, Barabanki 225 003, IN
Source
Current Science, Vol 119, No 8 (2020), Pagination: 1308-1315Abstract
The major problem of groundwater contamination primarily in the Indo-Gangetic alluvium is of fluoride, nitrate, arsenic, iron and salinity. One such area is Raebareli district, Uttar Pradesh, India representing the central Indo-Gangetic alluvium, where groundwater contamination through fluoride, nitrate and salinity has already been reported. However, a comprehensive picture pertaining to water quality as a whole has not been published yet. The present study deals with the changes in water quality parameters in groundwater samples of Raebareli district to present a wholesome picture. The results for water quality index (WQI) show that 7% samples in the study area are in the class of ‘unsuitable for drinking’ purposes, with WQI value as high as 411.5. Moreover, the results suggest that 57% and 43% of the samples in the premonsoon and post-monsoon period respectively, are under the category of ‘poor’ water. This study will enable the government authorities to suggest alternate drinking water sources in the affected area.Keywords
Alluvium, Fluoride, Groundwater Pollution, Nitrate, Salinity, Water Quality Index.Full Text