摘要
应用能值分析理论,通过计算广东省1991～2005年耕地生态经济系统能值评价指标,分析了广东省耕地生态经济系统的能值投入产出结构及发展变化情况。结果表明,在研究时段内广东省耕地利用系统处于不持续发展阶段,为了促进广东省耕地的可持续利用,应从调整耕地能值投入结构、加大农业科技及基础设施投入、治理工农业污染以及严格耕地保护政策等方面着手。
Base on the theory of emergy, this paper studies the emergy input and output of cultivated lands eco-economic system in Guangdong province from 1991 to 2005, and analyzes the development status of the system through calculating and comparing the indices. It shows that the cultivated lands cco-economic system is on the step of unsustainable. In order to strengthen the sustainahility of the cultivated lands, it proposes that the emergy-input structure should be adjusted, the input on agricultural technology and infrastructure should be increased, the pollution should be controlled and the policy to protect cultivated lands should be stricter.
出处
《广东农业科学》
CAS
CSCD
2008年第6期56-59,共4页
Guangdong Agricultural Sciences
关键词
能值分析
耕地生态经济系统
可持续发展
广东省
emergy analysis
cultivated lands eco-economie system
sustainable development
Guangdong province
