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Singh, G.
- Studies on Emission Potentiality of Nitrous Oxide from Wheat Field under Changed Climate
Abstract Views :249 |
PDF Views:95
Authors
Affiliations
1 Department of Agricultural Meteorology and Physics, Bidhan Chandra Krishi Viswavidyalaya, Nadia 741 252, IN
2 Department of Environmental Science, University of Kalyani, Kalyani, Nadia 741 235, IN
1 Department of Agricultural Meteorology and Physics, Bidhan Chandra Krishi Viswavidyalaya, Nadia 741 252, IN
2 Department of Environmental Science, University of Kalyani, Kalyani, Nadia 741 235, IN
Source
Current Science, Vol 109, No 4 (2015), Pagination: 768-774Abstract
Emission of nitrous oxide (N2O) from wheat field under various management practices was measured over two years. The experimental design consisted of two winter wheat (Triticum austivum L.) varieties with three nutritional treatments and two dates of sowing. The results revealed that soil moisture and soil temperature at different depths are the key parameters influencing N2O emission. A positive increase of N2O flux was noticed with increasing soil moisture along with decreasing soil temperature at specific wheat phenophases. Maximum N2O was emitted at the flowering stage. Individual factors, viz. nutrient, date of sowing and variety, and an interactive combination of these factors significantly influenced N2O emission rates. It was also found that there was no significant association between wheat grain yield and seasonal N2O flux.Keywords
Emission Potentiality, Nitrous Oxide, Soil Environment, Wheat Yield.Full Text
- Thermal Anomaly from NOAA Data for the Nepal Earthquake
Abstract Views :278 |
PDF Views:110
Authors
Affiliations
1 Department of Earth Sciences, Indian Institute of Technology, Roorkee 247 667, IN
1 Department of Earth Sciences, Indian Institute of Technology, Roorkee 247 667, IN
Source
Current Science, Vol 110, No 2 (2016), Pagination: 150-153Abstract
No Abstract.Full Text
- Morphodynamic Changes of Lohit River, NE India:GIS-Based Study
Abstract Views :328 |
PDF Views:162
Authors
Affiliations
1 Department of Earth Sciences, Indian Institute of Technology Roorkee, Roorkee 247 667, IN
2 Department of Earthquake Engineering, Indian Institute of Technology Roorkee, Roorkee 247 667, IN
1 Department of Earth Sciences, Indian Institute of Technology Roorkee, Roorkee 247 667, IN
2 Department of Earthquake Engineering, Indian Institute of Technology Roorkee, Roorkee 247 667, IN
Source
Current Science, Vol 110, No 9 (2016), Pagination: 1810-1816Abstract
The Lohit River is a south bank tributary of the Brahmaputra River. Till 1987, the Lohit River used to meet the Brahmaputra at a place near Bairagi Chapari (27.77°N, 95.44°E). By 1995, the confluence point had shifted about 20 km downstream. One small channel of the Lohit River captured the Dangori River during the 1988 flood. Gradually the Lohit River started flowing along the captured channel. By 1995, it became the trunk channel of the Lohit River and Dibru Saikhowa region became an island. Banklines of Brahmaputra and Lohit rivers have undergone significant changes near their confluence point within the last few decades. By 1987, the south bank of the Brahmaputra near Rohmoria (27.55°N, 95.15°E) shifted about 1.6 km southward from its position in 1973. Interestingly, within the period 1988-90 the south bank shifted about 4.1 km south. This major shifting was the result of capturing of the Dangori River by the Lohit River. However, migration of the rivers towards the south has stopped after 1995. Analysis of SRTM DEM reveals that topographic elevation has played a major role in changing the course of the Lohit River.Keywords
Banklines, Confluence Point, Morphodynamic Changes, Topographic Elevation, Trunk Channel.Full Text
References
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- Biomass Equations and Assessment of Carbon Stock of Calligonum polygonoides L., a Shrub of Indian Arid Zone
Abstract Views :298 |
PDF Views:93
Authors
G. Singh
1,
Bilas Singh
2
Affiliations
1 Division of Forest Ecology, Arid Forest Research Institute, New Pali Road, Jodhpur 342 005, IN
2 Agroforestry and Extension Division, Arid Forest Research Institute, New Pali Road, Jodhpur 342 005, IN
1 Division of Forest Ecology, Arid Forest Research Institute, New Pali Road, Jodhpur 342 005, IN
2 Agroforestry and Extension Division, Arid Forest Research Institute, New Pali Road, Jodhpur 342 005, IN
Source
Current Science, Vol 112, No 12 (2017), Pagination: 2456-2462Abstract
Biomass equations of Calligonum polygonoides L. were derived for the arid districts of Rajasthan, India for assessment of carbon stock. Plants varied spatially in growth and biomass (0.03-54.19 kg/plant). Contribution of stems and ischolar_mains was 45.7% and 48.0% of total biomass respectively. Nonlinear models were found to be the best in predicting biomass of stems, ischolar_mains, above-ground and total biomass of C. polygonoides using collar diameter as the predictor. Carbon concentration was highest in twigs followed by stems, ischolar_mains and leaves. Carbon density due to this species ranged between 0.37 and 1.84 t/ha. Conclusively, collar diameter alone is sufficient to predict the biomass of different components of this plant. Varying climatic and human-induced stresses were found to affect the biomass and carbon sequestration by this species.Keywords
Allometric Equation, Arid Region, Biomass Allocation, Carbon Stock.Full Text
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