生态农业知识中心

效率:创新型生态农业方法用更少的外部资源带来更高的产出

提升资源利用效率是生态农业系统的一项新属性,通过仔细规划和管理多样性,在系统各构成部分之间形成协同效应。比如,效率方面的一项关键挑战在于全球农田中施用的氮肥仅有不到50%转化为收获产品,其余部分损失在环境中,导致严重的环境问题。

生态农业系统改善对自然资源,尤其是丰富和免费资源的利用,如太阳辐射、大气中的碳和氮元素等。通过促进生物过程以及生物质、营养素和水的循环使用,生产者能够用更少的外部资源,降低成本并减轻资源利用所产生的负面环境影响。最终,减少对外部资源的依赖能够通过提升生产者的自主能力和应对自然或经济冲击的抵御力来赋予其权能。

衡量综合性系统效率的一种方法是土地当量比。土地当量比对比了两种或以上品种(如作物、林木、家畜)共同种养时的单产以及通过单作实现的单产水平。综合性系统往往展示出更高的土地当量比。

因此,生态农业通过必要的生物、社会经济和机构多样性,以及与时空的匹配来推动农业系统,支持提高效率。

 

Database

The Regional Meeting on Agroecology in Latin America and the Caribbean was successfully held in Brasilia, Brazil from 24 to 26 June 2015. It was organized jointly by FAO, the Ministry of Agrarian Development of Brazil, the Community of Latin American and Caribbean States (CELAC), the Specialized Meeting on Family...
会议记录
2016
The Centre promotes cross-cutting research using Agroecological science to plan biodiverse, resilient and productive agricultural systems in Latin America. In addition, it develops research and training projects as well as publications, integrating traditional practices with novel knowledge-based ones related to ecology, agronomy and social sciences, in order to support the scaling...
网站
The mission of the Center for Agroecology & Sustainable Food Systems (CASFS or the Center) is to research, develop, and advance sustainable food and agricultural systems that are environmentally sound, economically viable, socially responsible, nonexploitative, and that serve as a foundation for future generations. The Apprenticeship in Ecological Horticulture provides training...
United States of America
学习
Food insecurity and reduced food sovereignty is rampant in Kenya. This can be attributed to a new era of industrial agriculture resulting in genetic erosion of local crops, monoculture, high seed prices, and excessive use of chemicals. As a remedy, Kenya Seed Savers Network empowers farming communities to develop a...
Kenya
个案研究
2019
This article reflects on the regional dialogue on agroecology held on 12 May 2022 and co-organized by Global Alliance for the Future of Food (GAFF), Asia Farmers Association (AFA), and Andhra Pradesh Community-managed Natural Farming (APCNF) with technical assistance from the FAO. The event was a follow-up to the  GAFF, 2021 publication entitled The Politics of Knowledge: Understanding the...
论文
2022