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Yadava, P. S.
- Bamboo and its Role in Climate Change
Abstract Views :420 |
PDF Views:132
Authors
A. Thokchom
1,
P. S. Yadava
1
Affiliations
1 Centre of Advanced Study in Life Sciences, Manipur University, Imphal 795 003, IN
1 Centre of Advanced Study in Life Sciences, Manipur University, Imphal 795 003, IN
Source
Current Science, Vol 108, No 5 (2015), Pagination: 762-763Abstract
No Abstract.Full Text
- Soil Co2 Flux in the Different Ecosystems of North East India
Abstract Views :247 |
PDF Views:84
Authors
A. Thokchom
1,
P. S. Yadava
1
Affiliations
1 Centre of Advanced Study in Life Sciences, Manipur University, Imphal 795 003, IN
1 Centre of Advanced Study in Life Sciences, Manipur University, Imphal 795 003, IN
Source
Current Science, Vol 107, No 1 (2014), Pagination: 99-105Abstract
We examined monthly and seasonal changes in soil CO2 flux in the grassland, bamboo and Dipterocarpus forest ecosystems of Manipur, North East India. Soil CO2 flux was recorded to be highest during rainy season and lowest during cool and dry winter season. Soil CO2 flux rate was recorded to be highest in forest followed by grassland and bamboo forest. Multiple regression revealed that up to 92% of variation in soil CO2 flux could be explained by soil moisture, soil temperature and soil organic carbon in three different ecosystems. Annual amount of CO2 flux from soil was estimated at 694.86, 671.16 and 1029.25 g C m-1 y-1 in grassland, bamboo and Dipterocarpus forest ecosystems respectively. Thus the results indicate that soil CO2 flux rate is highly influenced by seasons, environmental factors and types of vegetation in the different ecosystems of NE India.Keywords
Multiple Regression, Soil Co2 Flux, Soil Moisture, Soil Organic Carbon, Soil Temperature.Full Text
- Changes in the Seasonal Cycle of Carbon Stocks and Fluxes Due to Fires in the Grassland Ecosystem of Manipur, North East India
Abstract Views :221 |
PDF Views:92
Authors
A. Thokchom
1,
P. S. Yadava
1
Affiliations
1 Department of Life Sciences, Manipur University, Imphal 795 003, IN
1 Department of Life Sciences, Manipur University, Imphal 795 003, IN
Source
Current Science, Vol 110, No 6 (2016), Pagination: 1088-1094Abstract
Fire is a common perturbation in the grassland ecosystems throughout the world. Effect of fire on carbon stock, rate of C-accumulation and soil CO2 flux have been studied in Imperata cylindrica-Sporobolus indicus-dominated grassland community of Manipur, Northeast India. Carbon stock in the vegetation components was estimated to be 12.59 and 12.06 Mg ha-1 and soil organic carbon stock was found to be 57.28 and 44.74 Mg ha-1 in the control and burnt site respectively. It indicates that fire decreases the carbon stock in the grassland. However in the following year the annual rate of carbon accumulation increased in burnt site (7.94 Mg ha-1 year-1) compared to the control site (6.75 Mg ha-1 year-1) whereas the annual soil CO2 flux decreased in the burnt site (4.06 Mg ha-1 year-1) in comparison to the control site (7.26 Mg ha-1 year-1). Our estimates of carbon budget reveal that the net uptake was 3.88 Mg C ha-1 year-1 in the grassland ecosystem after the burning treatment. Thus, the annual burning of grassland can cause major changes to carbon stocks and fluxes.Keywords
Aboveground Biomass, Belowground Biomass, Carbon Stock, Carbon Accumulation, Soil Co2 Flux.Full Text
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