全球气候变暖的主要原因在于大气中碳浓度的急速升高。为应对全球气候变暖,以低碳为特征的新发展模式成为目前减少温室气体排放,应对全球气候变暖的根本途径。农业生态系统作为最大的人工生态系统,是重要的碳排放源之一。农业活动与气候变暖关系密切,农业生态系统已成为温室气体的第二大来源。本文以三峡库区为例,在分析了库区农业发展面临问题的基础上,探讨了库区发展低碳循环生态农业的意义,提出了库区低碳循环生态农业发展的一般模式及减少农业生产碳排放的五种对策,即推广免耕法、稻田水旱轮作,适度排水放干、发展以沼气为核心的农村新能源系统、发展高效生态循环种养农业和培育新型农民。
The main reason of global climate warming is that the concentration of carbon rapid rise in atmosphere. In response to global wanning, the characteristics of the new development model is low-carbon, as a fundamental way to reduction the greenhouse gas emissions and combat global wanning. Agricultural ecosystem as the largest artificial ecosystems is an important source of carbon emission. Agricultural activity closely related to climate change, agro-ecological systems have become the second largest sources of greenhouse gases. In this paper, as the Three Gorges Reservoir area for example, based on analysis the problems of agricultural development in the reservoir area, discuss the significance of develop low-carbon cycle ecological agriculture of the reservoir, proposed the general pattern of development low-carbon cycle ecological agriculture and five measures to reduce carbon emissions of agricultural production. The five measures are popularize No-till, flood drought rotation and moderate drainage of paddy fields, development the new energy system at the core of biogas in rural areas, development high efficient ecological cycle of agricultural planting, cultivating new farmers.