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

This report presents the full extent of the results of the study carried out as part of the project Capitalization of stakeholder experience for the development of resilient agro-ecological techniques in West Africa (CALAO). The CALAO project aims at making the following available for practitioners, political bodies, and development cooperation institutions: reference information...
Burkina Faso - Senegal - Togo
报告
2018
The project DeMano, Spanish acronym for Mothers and Children Development in Ocotepec, focuses on improving the nutrition, health and livelihoods of communities in area of Cofre de Perote National Park (Veracruz, Mexico), through the enrichment of agricultural production and implementation of strategies based on cientific research on soils, health and...
Mexico
视频
2017
The 12-minute film ‘We Unite’ is a window into the lives of two organic farmers and the reasons they join the yearly ‘We are Fed-Up’ demonstration in Germany. Along with hundreds of other farmers, they drive their tractors into the heart of Berlin where they unite with thousands of citizens calling for a better food and...
Germany
视频
2019
The processes of agrarian and food transition towards sustainable food systems are constructed by including a territorial perspective. Whether they are called "short circuits" or "territorialized systems", the initiatives that enter into these transitions reconnect production with consumption and facilitate -and encourage- a collaboration between spaces and sectors. They are...
France - Spain
个案研究
2019
People’s initiative to promote ecological approaches to agriculture and the re-localization of decentralized food systems are remarkable in war-torn Kurdistan. Efforts to generate Kurdish ecologies through agroecology, food sovereignty, and economies of care are uniquely based on traditions of social ecology, a rejection of patriarchal relations, and democratic confederalism. Kurdish ecological...
论文
2021