密云库北区域典型村庄生态经济评估与规划设计

Eco-economic Evaluation of Key Village in the North of Miyun Reservoir and Designing

密云水库位于北京市密云县北部山区,由于干旱少雨,其来水量由20世纪50年代平均来水量17亿m3下降到近10年的0.7亿m3,水库水质的变化与水库近区域,尤其是密云水库一级保护区的经济行为关系更为密切。作者以密云水库一级保护区典型村庄为案例,对其生态经济状况进行能值评估,结果表明,该村净能值产出率<1,全村生态经济运行可行性不强,能值投资率(5.67)高于中国农业能值投资率的平均值(4.93),该村对经济资源投入的依赖性较大,同时,环境负荷率为5.67,对环境造成了一定压力,可持续指数(1.13)偏低,全村属于资源密集型的经济开发系统。在能值评估的基础上,提出了以旅游循环农业为核心的生态设计方案,为水源保护区生态经济的协调发展提供了科学依据。

Miyun reservoir is in the north mountainous area of Miyun country.Its coming water is becoming less from 17 hundred million m 3 in fifties of 20 century to 0.7 hundred million m 3 in recent 10 years.So change of the water quality is maybe close to the nearest areas of Miyun reservoir.This article took a key village in the north part of Miyun reservoir as a example and evaluated through emergy method.The result showed that the emergy yield ratio is 0.2,meant the eco-economic mode of the village was not feasible;emergy investment ratio is 5.67,higher than the average emergy investment ratio of China （4.93）,meant the village was depending on outside investment,meanwhile,the environmental loading ratio was 5.67 and emergy index of sustainability was 1.13,which showed that the system may provide non acceptable and sustainable economic results.Finally,on the bases of the evaluation,this article put forward ecological planning for the future development.