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本文从经济学角度对农业生态系统进行下列几方面探讨:(1)农业生态系统是人类抱着一定经济目的进行经济活动的产物。建成后没有人类扶持或干预农业生态系统就不能继续存在。(2)农业生态系统的功能主要是受人类经济活动所控制。对自然环境、植物、动物和微生物四个要素。采取各种不同办法进行干预和控制,以提高整个农业生态系统的功能。(3)能量转化和物质循环的经济成果是创造使用价值。农业生态系统内的各种因素是潜在的使用价值,与能量流和物质流同步运动。逐渐积累而转化为能满足人类需要的使用价值。(4)商品交换是造成农业生态系统间的能量和物质输出及输入的主要原因。由于商品交换,能量和物质随着农产品离开本农业生态系统,必须采取适当办法输入适量的能量和物质作补充,以保持其平衡,才能使农业生态系统在进行经济再生产时继续发挥作用。
This paper discusses the following aspects of agro-ecosystems from an economic point of view: (1) agro-ecosystems are the product of economic activities of human beings for a certain economic purpose. After the project is completed, it can not continue without human support or intervention in agro-ecosystems. (2) The function of agroecosystem is mainly controlled by human economic activities. The four elements of the natural environment, plants, animals and microorganisms. Different approaches are taken to intervene and control so as to enhance the function of the entire agroecosystem. (3) The economic result of energy conversion and material circulation is to create value for use. Various factors within the agroecosystem are potential use values that move in parallel with energy and material flows. Gradually accumulated and converted to use value to meet human needs. (4) Commodity exchange is the main reason that causes the output and input of energy and material between agro-ecosystems. As the exchange of commodities, energy and materials, as agricultural products leave the agro-ecosystem, they must be supplemented with the appropriate amount of energy and materials in order to maintain their balance before the agro-ecosystem can continue to play its role in economic reproduction.