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51.
P. Sudha V. Ramprasad M. D. V. Nagendra H. D. Kulkarni N. H. Ravindranath 《Mitigation and Adaptation Strategies for Global Change》2007,12(6):1131-1152
This paper addresses methodological issues in estimating carbon (C) sequestration potential, baseline determination, additionality
and leakage in Khammam district, Andhra Pradesh, southern part of India. Technical potential for afforestation on cultivable
wastelands, fallow, and marginal croplands was considered for Eucalyptus clonal plantations. Field studies for aboveground and belowground biomass, woody litter, and soil organic carbon for baseline
and project scenarios were conducted to estimate the carbon sequestration potential. The baseline carbon stock was estimated
to be 45.3 t C/ha, predominately in soils. The additional carbon sequestration potential under the project scenario for 30 years
is estimated to be 12.8 t C/ha/year inclusive of harvest regimes and carbon emissions due to biomass burning and fertilizer
application. Considering carbon storage in harvested wood, an additional 45% carbon benefit can be accounted. The project
scenario has a higher benefit/cost ratio compared to the baseline scenario. The initial investment cost requirement, however,
is high and lack of access to investment is a significant barrier for adoption of agroforestry in the district.
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N. H. RavindranathEmail: |
52.
In recent years, the problem of fluoride in Nawa tehsil (Nagaur district) has reached at an alarming proportion. In the last
decades, the water table of the Nawa tehsil has fallen. With the lowering of the water table, the amount of fluoride has increased
in the subsoil water which is used by the villagers when drawn through hand pumps, tube wells etc. So the present study illustrates
the groundwater quality of randomly selected villages of Nawa tehsil. The highest fluoride concentration was found in Rulaniyo
ki Dhani i.e. 14.62 ppm. The excessive intake of fluoride resulted in dental and skeletal fluorosis. 相似文献