Study of terrestrial carbon flux by eddy covariance method in revegetated manganese mine spoil dump at Gumgaon,India |
| |
| Authors: | Rajani Nair Asha A. Juwarkar Tushar Wanjari S. K. Singh T. Chakrabarti |
| |
| Affiliation: | (1) Department of Land, Air and Water Resources, University of California, Davis, California 95616, USA;(2) Department of Environmental Contaminants–W-2605, US Fish and Wildlife Service, Sacramento, California 95825, USA;(3) Western Regional Center: National Institute for Global Environmental Change, University of California, Davis, California 95616, USA;(4) School of Landscape Ecology and Ecosystem Science (LEES), Earth, Ecological and Environmental Sciences (EEES), Bowman-Oddy Laboratories, University of Toledo, Toledo, Ohio 43606-3390, USA;(5) Department of Botany and Plant Pathology, Oregon State University, Corvallis, Oregon 97331, USA;(6) Faculty of Forestry, University of Toronto, Ontario, Toronto, M5S 3B3, Canada;(7) College of Forest Resources, University of Washington, Seattle, Washington 98195, USA;(8) Present address: Goddard Space Flight Center, Data Assimiliation Office, Greenbelt, Maryland 20771, USA |
| |
| Abstract: | The micrometeorological technique of eddy covariance is a powerful tool for characterizing the carbon (C) budget of terrestrial ecosystems. Eddy covariance method was used for estimating Net Ecosystem Exchange (NEE) of carbon dioxide between atmosphere and revegetated manganese mine spoil dump at Gumgaon, India. In this paper, we analyzed the diel CO2 flux pattern and its response to various physical environmental conditions. The carbon balance of terrestrial ecosystems is particularly sensitive to climatic changes. Study of diel pattern of CO2 flux showed that carbon uptake was dependent on sunlight. Effect of temperature and latent heat on the CO2 flux showed that rate of CO2 uptake increased proportionally, but later declined due to various factors like stomatal response, high evaporative demand, circadian rhythm and/or a combination of all three. Net ecosystem production of revegetated land was found to be 28.196 KgC/ha/day whereas average net carbon release by the ecosystem, through respiration was observed to be 5.433 KgC/ha/day. Thus, quantifying net carbon (C) storage in degraded land is a necessary step in the validation of carbon sequestration estimates and in assessing the possible role of these ecosystems in offsetting adverse impacts of fossil fuel emissions. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
