印度養牛產業之腸道發酵甲烷排放減量潛力與成本分析

Mitigation potential and costs of enteric methane emissions from Indian bovine sector

陳方婕(Chen Fang-Chieh)

指導教授 ： 李慧琳

國立政治大學/社會科學學院/應用經濟與社會發展英語碩士學位學程(IMES)/碩士(2020年)

https://doi.org/10.6814/NCCU202000300

摘要

本論文以英文書寫，作者無提供中文摘要。

關鍵字

黃牛 ； 水牛 ； 腸道甲烷排放量 ； 印度 ； 飼料配比 ； GLEAM-i

並列摘要

The purpose of this study is to find alternative rations to help the Indian cattle and buffalo sector reduce enteric methane emissions. We suggested a practical and low-cost method, in which the composition of rations used in 2010 was adjusted to attain emissions reductions. In this research, we analyzed enteric emissions and feed costs. We used the GLEAM-i model to calculate enteric emissions, which is based on the IPCC Tier 2 approach. The GHG calculations with the GLEAM-i model are detailed and comprehensive. Enteric emissions are associated with energy requirements. The energy requirements of cattle and buffalo are based on their live weight, gender, and function (to produce milk or meat or to provide labor). We identified 16 groups of bovines according to their different energy requirements. For each group, we imposed six scenarios of alternative rations that aimed to reduce enteric emissions. Among the six scenarios, the proportion of feed materials of higher digestibility is increased, thus replacing those of lower digestibility. Combining the mitigation potential and feed costs of the alternative rations, Scenario 6 presents the best choice, followed by Scenarios 5, 4, 3, 2, and then 1. Scenario 6 could attain a 1.5% reduction of enteric emissions (8.7 million t -eq/year) and a 13% reduction in the feed costs ($3,828 USD/year) from the 2010 benchmark. In the short term, Scenario 6 would be the best choice for India to cut enteric emissions without adding significant financial burden. The relatively more costly Scenarios 1–5 could be feasible when India achieves better economic viability.

並列關鍵字

Cattle ； Buffalo ； Enteric emissions ； Feed costs ； India ； Feed composition ； GLEAM-i

參考文獻

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5.GHG Platform India. (2017). "Trend analysis of GHG emissions in India from 2005 to 2013." Retrieved July 31, 2019, from http://www.ghgplatform-india.org/Images/Publications/GHG%20Trend%20Analysis%20Report_2005-13.pdf