关中地区农业生态经济系统协调度时空动态分析

The spatial-temporal analysis of harmony coefficient of agricultural eco-economic system in the region of Guanzhong

以关中地区1999-2008年农村社会经济指标数据为基础,参照农业生态协调度计算公式,结合关中地区实际情况,构建了评价指标体系,得出关中地区及其各地市的农业生态经济系统协调度和协调等级。结果表明：（1）1999-2008年,关中地区的农业生态经济协调度整体表现为从上升到近两年来下降的趋势,生态子系统协调度在波动中下降,经济和社会子系统的协调度除个别年份外,都处于较稳定的上升趋势;（2）关中各地市农业生态经济协调度整体表现为波动上升的趋势,但渭南市和杨凌区农业生态经济协调度的上升趋势最快,咸阳、宝鸡市次之,西安和铜川市的协调度上升趋势较慢;（3）农业生态经济系统中生态子系统的发展对地区农业系统协调度有抑制作用,经济子系统表现为促进作用,社会子系统则处于波动增长影响。针对关中地区生态和社会经济发展的现状特点,提出农业经济生态协调发展调控模式。

Based on the rural social and economic data during the period of 1999～2008,we establish an evaluation system in the view of actual conditions of the study area and calculate and analyze the harmony coefficient（HC） of agricultural eco-economic system in the region of Guanzhong by referring to the theory of harmony coefficient of Yang Shiqi.It shows that：（1） The HC of agricultural eco-economic system experiences such phases as increasing first and then decreasing in fluctuation from 1999～2008 in the region of Guanzhong;There were a fluctuant decreasing tendency for the HC of eco-economic system, while economic subsystem and social subsystem increase except in some years.（2） The HC of agricultural eco-economic system in various cities of Guanzhong shows a fluctuant increasing tendency in general,among which Weinan and Yangling develop most quickly,then Xianyang and Baoji,while Xi＇an and Tongchuan were the slowest.（3） The changes of factors of agricultural eco-economic system can affect the whole system.Ecological subsystem has negative effect on agricultural eco-economic system,while economic subsystem shows positive effect,and social subsystem presents increase trend during fluctuations.In view of existing situation,we come up with regulation model of the HC of agricultural eco-economic system in the region of Guanzhong.