城郊型生态农业结构、功能与多样性分析

 分析了云南省个旧市郊区小甸头村生态农业结构、功能与多样性6年的动态变化。结果表明:(1)结构从传统单一种粮型转变为猪-沼气-粮-林-果-菜商品经济型;(2)经济效益和价值产投比逐年增加;(3)人工输入增加物质和能量输出,但过多的输入会降低物质和能量产投比;(4)系统多样性与其结构、功能密切相关,并随结构、功能的改善而逐渐增强。提出了系统持续发展的对策。

Analysis of Structure, Function and Diversity on Suburban Eco-agriculture

Six year's dynamic change of agricultural structure,function and diversity in Xiaodiantou Village,Gejiu City,Yunnan Province was studied as the suburban eco-a-griculture.Results showed that(1)structure was changed from conventional,sole food production type to the commercial economic type of hog-biogas-food-forest-fruit-vegetable;(2)the economic benefit and output-input ratio of value increased gradually;(3)output of matter and energy increased with input,but the output-input ratio of energy and matter decreased when input was excessive;(4)the diversity of system was closely related with its structure and function,and increased with the structure and function improved.The measure of sustainable development was put forward.