Carbon dynamics of acid saline pokkali soil under long term fertiliser application in rice
By: Sharon Mathew.
Contributor(s): Sreelatha A K (Guide).
Material type:
BookPublisher: Vellanikkara Academy of Climate Change Education and Research 2016Description: 88.Subject(s): Climate Change Education and ResearchDDC classification: 551.6 Online resources: Click here to access online Dissertation note: BSc-MSc (Integrated) Abstract: The amount of carbon in the atmosphere has increased by 30 per
cent. The rising temperatures and carbon dioxide concentration and uncertainty in
rainfall associated with climate change may have direct relationship with
increased levels of carbon dioxide. One proposed method to reduce atmospheric
carbon dioxide is to increase the global storage of carbon in soils with an added
benefit in simultaneous enhancement in agricultural production. Soil organic
carbon (SOC) is one of the main carbon reservoirs in the terrestrial ecosystem. It
is important to study SOC dynamics and effects of organic carbon amendments in
paddy fields and saline soils because of their vast expansion
Objectives of the study were to estimate the soil organic carbon (C)
status in acid saline soil and to assess the influence of long term fertilizer
applications on soil carbon dynamics. Samples were collected from the
experimental plot laid out in randomized block design with 10 treatments, each
replicated four times with pokkali rice variety Vytilla 4 at RRS Vytilla, Kerala.
The study revealed the baseline soil characteristics especially the
soil carbon and its counterparts. Vertical distribution of SOC showed the storage
profile of carbon and in cultivated sites a topsoil carbon sink (mostly labile
carbon) is identified owing to increased fertiliser inputs whereas a potential
subsoil sink (non labile carbon) is identified vertically downwards.
However, the high content of non labile carbon in the subsurface showed the
ability of Pokkali soil for carbon sequestrations. The labile carbon present in the
surface soil resulted in the availability of nutrients to the plants which was evident
from the high nutrient status of the control plot .all carbon fractions in the present
study indicates the ability of Pokkali soils to sequester carbon. Therefore, the
Pokkali ecosystem has to be maintained as such to mitigate the ill effects of global
warming in the present climate change scenario.
| Item type | Current location | Collection | Call number | Status | Date due | Barcode |
|---|---|---|---|---|---|---|
Theses
|
KAU Central Library, Thrissur Theses | Reference Book | 551.6 SHA/CA (Browse shelf) | Not For Loan | 174037 |
BSc-MSc (Integrated)
The amount of carbon in the atmosphere has increased by 30 per
cent. The rising temperatures and carbon dioxide concentration and uncertainty in
rainfall associated with climate change may have direct relationship with
increased levels of carbon dioxide. One proposed method to reduce atmospheric
carbon dioxide is to increase the global storage of carbon in soils with an added
benefit in simultaneous enhancement in agricultural production. Soil organic
carbon (SOC) is one of the main carbon reservoirs in the terrestrial ecosystem. It
is important to study SOC dynamics and effects of organic carbon amendments in
paddy fields and saline soils because of their vast expansion
Objectives of the study were to estimate the soil organic carbon (C)
status in acid saline soil and to assess the influence of long term fertilizer
applications on soil carbon dynamics. Samples were collected from the
experimental plot laid out in randomized block design with 10 treatments, each
replicated four times with pokkali rice variety Vytilla 4 at RRS Vytilla, Kerala.
The study revealed the baseline soil characteristics especially the
soil carbon and its counterparts. Vertical distribution of SOC showed the storage
profile of carbon and in cultivated sites a topsoil carbon sink (mostly labile
carbon) is identified owing to increased fertiliser inputs whereas a potential
subsoil sink (non labile carbon) is identified vertically downwards.
However, the high content of non labile carbon in the subsurface showed the
ability of Pokkali soil for carbon sequestrations. The labile carbon present in the
surface soil resulted in the availability of nutrients to the plants which was evident
from the high nutrient status of the control plot .all carbon fractions in the present
study indicates the ability of Pokkali soils to sequester carbon. Therefore, the
Pokkali ecosystem has to be maintained as such to mitigate the ill effects of global
warming in the present climate change scenario.
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