Research On Planning Of Household Biogas Regional Suitability In Rural Area Of China

Household biogas has been used for decades in China’s rural areas.However,until now,there are still a lot of problems in the process of the development of household biogas.For example,such as the layout of household biogas is not legitimate enough,the biogas digesters couldn’t be used effectively and continuously in some areas.The study analyze the influence factors of household biogas suitability in the rural areas,and establish the evaluation system of household biogas suitability,and finally made a comprehensive evaluation and regional planning to household biogas suitability of our country by now and near future.Firstly,based on the fermentation principle,operation mode and current technology of household biogas,the influencing factors of the biogas suitability were determined through theoretical analysis.Then,based on data from statistical yearbook and the relevant statistical website,the correlation analysis and regression analysis between household biogas regional suitability influence factors and the development level of household biogas are made by SPSS 19.0 software.The areas in which the household biogas development level is quite special has been analyzed,too.Through the analysis,the correlation between the influencing factors and the household biogas development level can be figured out,and the main influencing factors were selected according to the correlation analysis results.These factors were annual average temperature,livestock and poultry excrement gas output per household,and the income per capita.Then,according to the design principle of the evaluation index system,the evaluation index of the biogas regional suitability index in rural areas of China was selected,and the evaluation index system of household biogas suitability was established.Through the analysis and comparison of various kinds of comprehensive evaluation methods,the most suitable method for comprehensive evaluation of biogas regional suitability in rural areas of our country was selected,and the evaluation criteria of the selected comprehensive evaluation method were stipulated.The suitability of household biogas was graded by the strength level,which are suitable area for household biogas,sub-suitable area for household biogas,not suitable area for household biogas,and the area which need to change development model.Finally,based on the research results above,the evaluation of the household biogas suitability in rural areas of China was evaluated,and the zoning map of household biogas suitability in rural areas of China is given.In addition,the study also predicts the trend of natural factors,resource factors and socio-economic factors in rural areas of China in the next period of time,and accordingly analyzes the trend of suitability zoning results.