黄土高原沟壑区王东沟流域农业生态经济系统演变过程

[目的]探讨黄土高塬沟壑区王东沟流域1986—2013年间农业生态经济系统演变过程,分析不同演变阶段农业生态系统和农业经济系统间的耦合态势,为该地区经济社会可持续发展提供参考。[方法]基于黄土高塬沟壑区王东沟流域长期监测数据和农户调查资料,建立了农业生态经济系统综合评价指标体系,应用耦合度模型对农业生态经济系统演变过程中的耦合态势进行了分析。[结果](1)黄土高塬沟壑区王东沟流域1986—2013年间农业生态系统和农业经济系统综合指数呈上升波动趋势。(2)农业生态经济系统演变过程中农业生态系统和农业经济系统耦合态势经历了恢复发展阶段、协调发展阶段、恢复发展阶段,目前处于协调发展阶段。[结论]在农业生态经济系统演变过程中,通过农业资源合理调配,促使农业经济获得新的增长点,农业生态经济系统能够高效稳定发展。

Evolutionary Process of Agricultural Eco-economic System at Wangdonggou Watershed in Gully Region of Loess Plateau

[Objective] The objectives of this paper are to discuss the evolutionary process of agricultural eco-economic system from 1986 to 2013 at Wangdonggou watershed in gully region of Loess Plateau, analyze coupling status between agriculture system and eco-economic system in different development stages in order to provide support for economic and social sustainable development of the region. [Methods] Based on the long-term monitoring data and agricultural household survey at Wangdonggou watershed in gully region of Loess Plateau, we established agricultural eco-economic system comprehensive evaluation indices, and analyzed coupling situation in the process of agricultural eco-economic system using a coupling model. [Results] (1) The composite evaluation index of agricultural ecosystem and agricultural economic system increased from 1986 to 2013 at Wangdonggou watershed; (2) The agricultural eco-economic system had underwent recovery phase, harmonious development phase and reconversion phase, and the current coupling status was harmonious development phase. [Conclusion] In the evolutionary process of agricultural eco-economic system, it could develop efficiently and stably through optimizing agricultural resources and finding new growing point.