Analysis on the Factor Decomposition of Carbon Emissions Caused by Chinese Agricultural Land Use and the Emission Reduction Measures

摘要

Carbon emissions lead to high pollution and climate change. As an important part of land resources, agricultural land has become an important source of carbon emissions and has caused serious environmental pollution, which should not be neglected. Although agriculture has smaller potential than the industrial sector in reducing carbon emissions, its effects on emission reduction and positive external effects on society will be far better than those of the industrial sector. Therefore, to explore the factors of carbon emissions caused by Chinese agricultural land use, we reveal the microscopic mechanisms of carbon emissions from agricultural land use, propose concrete emission reduction measures, and adopt important theories such as behaviour of farmers and environmental externality. The paper measures the amount of carbon emissions caused by agricultural land use in China from 2002 to 2013 and uses Kaya identical equation to analyse the driving factors of carbon emissions that arise from agricultural land use from the national and provincial levels. The research results indicate that carbon emissions caused by agricultural land use in China has remarkable growth rate, fertilizers are the main carbon source of carbon emissions of agricultural land in Xinjiang, and carbon emissions from agricultural land use have obvious timing characteristics. Furthermore, the level of agricultural economic development, agricultural structure change, and scale of agricultural labour force may result in varying degrees of carbon increment in agricultural land. This paper also notes foreign experience and properly establishes a policy system for reducing carbon emissions caused by agricultural land use. By measuring and grasping the historic rules and spatial characteristics of carbon emission caused by Chinese agricultural land use, the paper decomposes and studies the factors influencing carbon emission and clarifies these factors from a quantitative aspect. The study also summarizes and analyses carbon emission reduction technology and characteristics from two aspects: reducing emissions and increasing carbon sink. This research will inspire and serve as a reference for relevant future works.