中国中部规模养殖沼气工程系统顶点赋权图分析

基于系统动力学反馈分析理论，提出定性与定量紧密结合的系统顶点赋权因果关系图分析法。以萍乡地区兰坡村泰华猪场规模养殖沼气工程系统为实例，对我国中部农村生猪养殖沼气工程系统的利润、粪尿等废弃物二次生物质再生能源开发、沼肥对水稻和蔬菜种植促进的正效益以及过剩招气对大气的污染、沼液与灌溉用水混合排灌造成水稻苗发青、由于承载沼肥的农田不足和长达七个月的冬闲季节沼肥浪费引发的二次污染等问题进行定量动态反馈分析研究，得出系统蕴含的四条增长、四条制约反馈环的反馈规律。给出针对我国中部地区小流域地域特征的，有利于规模养殖系统可持续发展的沼气工程系统建设的三条对策建议。

Vertex Weighted Diagram Analysis of Livestock Production Biogas Engineering System in Center China

Based on the feedback analysis theory of System Dynamics,a systemic analysis approach named Vertex Weighted Causal Loop Diagram Analysis Approach is presented in this paper. And the approach is applied to analyze systematically of the breeding profit,the development of the recycling bio -energy contained in the excreta,the profit of paddy and vegetable fertilized by bio- fertilizer, and the pollution caused by surplus biogas,young paddy pastiness caused by the irrigating water mixed by bio -fertilizer, shortage of bio -fertilizer loading cropland,waste of bio -fertilizer during the winter,which also caused the second time pollution of excreta of Scale pig production biogas engineering system in small hill watershed area in Center China. The feedback law of four promoting feedback loops and four balancing feedback loops are educed after the qualitative and quantitative analyses of a case,which is about the scale pig production biogas engineering system of PingXiang TaiHua pig farm in the west region of JingGang Mountain,a typical intensive pig farm in small hill watershed area in Center China. Three general countermeasures on the sustainable development of scale breeding and biogas engineering system are presented at the end of the paper.