Macroscopic Factors Decomposition of Methane Emissions from Livestock Based on the Empirical Analysis of 31 Provinces in China
2020
Wenjie Yao and Huili Wang
This paper builds a factor decomposition model of methane emissions from livestock from the three dimensions of technology, economy, and population, by using the panel data covering 31 provincial regions in China during 2003-2016, and aims to reveal the macroscopic causes of methane emissions from livestock. The research shows that technical, economic and population factors of methane emissions from livestock have diminishing marginal contribution. The methane emissions from intestinal fermentation are mainly restricted by livestock’s physiological structure. Following increase or decrease of livestock feeding quantity, it changes with a relatively stable parameter and has little controllability. Methane emissions from faecal management are limited little by livestock’s physiological structure and it is largely controllable. The government should increase technical input to reduce methane emission factors of livestock, deal with livestock manure through resource utilization, and reduce raising scale by using a certain market mechanism in due course.
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