【摘要】 运用生态学的系统分析方法,以邛崃波尔山羊场牧业生态系统为研究对象,对其能流、物流以及能量和物质的转化效率和经济效益进行了研究.结果表明,该牧业生态系统以畜产品及畜体输出的能量和粗蛋白质分别占相应总输出的31.07％和31.77％,家畜能量和粗蛋白质的转化效率分别为16.56％和17.81％,产值盈利率为36.42％,其中羊高达52.26％.该系统是一个值得推广的牧业生态系统.更多还原

【Abstract】 In this paper, energy flow, substance flow, along with transformed efficiency and economic benefits of energy and substance in Qionglai Boer goat farm’s stockbreeding ecosystem are studied by a systemic analytical method of ecology. The results show: in this stockbreeding ecosystem, energy and coarse protein of exported by livestock and its product are respectively 31.07% and 31.77% of corresponding total amount, transformed efficiency of this two indexes amount to 16.56% and 17.81% respectively, rate of earning value of output is 36.42%, of which goat is up to 52.26%. This stockbreeding ecosystem is worth generalizing.更多还原