准格尔旗退耕还林工程影响下农户农牧系统能值变化

The Change of Emergy of Households' Agro-pastoral System Under the Influence of the Grain for Green Policy in ZhunGeEr county

退耕还林工程对农户生产生活影响引起广泛关注,根据2011年准格尔旗农户调查数据,运用能值分析的方法,探讨了4户典型农户退耕还林工程前后农牧系统能值变化。研究表明:在退耕还林工程与农户耦合作用下,农户耕作面积普遍减少,大部分农户的放牧行为得到有效控制;农户的农牧业生产对自然资源投入的依赖程度减少,而化肥、农药、机械等工业辅助能明显增加;农户农牧系统转变的潜在问题是农牧产品竞争力下降、环境负载率增加等。

The impact of＂the Grain for Green Project （GGP）＂ on rural households＇ production and living conditions aroused wide attention, while few people research it from the angle of emergy. Based on the household survey of ZhunGeEr county in 2011 and emergy analysis method, this paper explored the change of emergy of four typical rural households＇ agro-pastoral system impacted by the GGP. Some conclusions can be drawn as follows. Under the coupling influence of the GGP and households, households＇ farmland was generally reduced and most farmers＇ depasturage controlled; the households＇ agro-pastoral production depends less and less on natural resources, while it more depends on chemical fertilizer, pesticides, machinery and other industrial support; the potential problem is households＇ agro-pastoral production less competitive and the environment load rate of farming production increased.