The Role of Methane Project in Enshi Agro-ecosystem Through Emergy Analysis
Abstract：Through collecting the energy data about energy structure adjustment in Sanlongba village of Enshi in 2000 and 2008,the emergy method is used to convert into indices system to analyze the energy in the function of agricultural ecosystem.A typical household is used to analyze the role of the methame project in the agro-ecosystem.Results showed that methane project greatly changed energy structure of Sanlongba village,promoted the popularization of the new type of energy,and the biogas popularization reached 61.53%.Biogas in 2008 accounted for 10.59% of the total emergy,wood,accounted for 10.31%,reduced by 11.41 percentage points,honeycomb briquet reduced by 9.43%,liquefied gas reduced by 0.21 percentage points the emergy proportion of electricity and coal 2000 increased.The study on the typical household shows that the biogas project accounts for a large proportion in household agricultural ecosystem,increasing from 0% in 2000 to 10.093% in 2008,and created 8355.68×1012sej·a-1 emergy for the family.The study shows that construction of methane project in Sanlongba village has not only increased a new tpye of clean energy,but played an important role in the household agricultural ecosystem.
Keywords：methane projectemergy analysisagro-systemrole
Publication Date：2011-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 285-290 )