| As the fossil energy shortage and the environmental pollution problems having gone bad to worse, the countries are seeking actively for the alternative energy sources in order to expanding the economy, protecting of the ecological environment and ensuring energy security in the world. Because of good combustion performance, environment-friendly and renewable characteristics, biodiesel has cause a major concern of renewable energy with the advantages of never possessing with grain and land. Pistacia chinensis is a significant renewable energy plant for the reason that it is resistant to drought, salinity and suitable for growing in all types of soil. This thesis studies the feasibility of the Pistacia chinensis biodiesel as the alternative energy through its characteristics, production processes, development policies and regulations, resource potential, energy and environmental benefits and cost analysis. This thesis studies the quantity and quality of marginal lands which are suitable and fairly suitable for planting the Pistacia chinensis in China. Taking Pistacia chinensis biodiesel as research object, this thesis calculates net energy and carbon emissions in its life cycle process and estimates its energy benefits and environmental benefits and calculates Pistacia chinensis biodiesel economic benefits and market potential by analyzing the costs in each stage.To achieve the above goals, this research focuses on the following two specific researches. Firstly, according to natural condition requirements of Pistacia chinensis, evaluate the area, quality and spatial distribution of potential lands suitable for Pistacia chinensis production in China, using multi-factor analysis method and multi-source data such as land use data, remote sensing data, meteorological data and soil data. Secondly, by using Life Cycle Analysis method, the life cycle energy balance and the environmental emissions are built to research the life cycle including planting, fruit transportation, raw oil production, biodiesel production and biodiesel transportation net energy production potential and environmental emissions of Pistacia chinensis biodiesel.The results of this thesis are as follows:(1) With consideration of policy and other restraints, China,s total area of marginal lands which is suitable for the growth of Pistacia chinensis is19.90million ha; which is made up of the suitable area7.10million ha and the fairly suitable area12.79million ha. On the provincial level, Shaanxi has the largest potential of Pistacia chinensis production with the area accounting for19.14%and Tibet Autonomous Region has the smallest potential of Pistacia chinensis production with the area0.31%.With regarding to lands use type, moderate dense grassland has the largest suitable area for the growth of Pistacia chinensis after the exclusion of shrub lands. Its area accounts for about36.10%containing of suitable area and fairly suitable area.(2) This paper estimates that the potential maximum gross annual production is approximately162.19billion MJ per year for suitable lands and117.20billion MJ per year for lands classified as fairly suitable, which could produce6.35million ton of biodiesel. Considering the net energy production and output potential for Pistacia chinensis biodiesel at the provincial level, Yunnan has the richest production potential, followed by Shaanxi and Guizhou provinces.(3) On the whole life cycle process, CO2emission is the largest amount of biodiesel combustion process emission which takes on98.77%of total pollution emission both on suitable planting area and the fairly suitable planting area. The greenhouse gas emission in planting is net reduction, meanwhile, the amount of pollution and greenhouse gas emission in the biodiesel combustion process is the most which takes on82.31%of total pollution emission both on suitable planting area and the fairly suitable planting area. After by-products substitute for some energy consumption, the total mitigation rate of suitable planting area and the fairly suitable planting area is31.97%and48.15%, respectively. The total greenhouse gas emission reduction potential is2.55million tons per year after optimized in the study area and it can get163.82million Yuan. |
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