定西地区农业生态经济系统的结构和功能分析  

Analysis of Structure and Function of Agro-Economic System of Dingxi Area

作　　者：贾文雄[1] 宋凤兰[1] 

机构地区：[1]西北师范大学地理系,兰州730070

出　　处：《干旱区资源与环境》2000年第4期21-26,共6页Journal of Arid Land Resources and Environment

摘　　要：分析了定西地区农业生态经济系统的结构和功能 ,发现水资源时空分布不均 ,种群结构比较单一 ,产业结构不合理 ,使得系统生产能力很低 ,N、P、K不平衡 ,经济效益低下。据此从农业可持续发展的角度出发 ,提出了优化农业生态经济系统结构和提高其功能的对策和建议。Through analyzing the structure and function of agro economic system of Dingxi area, water resources is found not to be well distributed in space and time, its population structure is unitary and the industrial structure is irrational, which lead to the low productivity, the imbalance of K、P、K and the bad economic benefit of the system. From the view point of sustainable develplment, strategies and suggestion for improving the structure of the agro economic system and enhancing its function are put forward.

关 键 词：定西地区 农业生态系统 结构 功能 投入产出 

分 类 号：S181[农业科学—农业基础科学] F062.2[经济管理—政治经济学]