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

Agroecology Fund (AEF) launched a new video, “Agroecology: Grassroots Solutions to Global Crises”, a 7-minute short film featuring grantee partners, advisors, allies, and donors from the global AEF community.  Filmmaker and photojournalist Rucha Chitnis is in conversation with Rutendo Zendah from the African Centre for Biodiversity in South Africa, Pius Ranee...
视频
2021
This fact sheet presents a family agroecosystem, located in the community of Enjeitado in the Sertão do Pajeù in Brazil – the most populous semi-arid region in the world. Sabià Agroecological Development Center Initiative is a family agroecosystem focused on the recovery of soil fertility in the Caatinga area. The agroecosystem...
Brazil
创新
2021
FAO recently partnered with the organization IN SITU to measure the impact of agroecology through the Tool for Agroecology Performance Evaluation (TAPE) in 60 farms surrounding Rosario City in the province of Santa Fe, Argentina. This video presents the results of the implementation of TAPE designed in 60 establishments in the Rosario metropolitan area of Argentina and...
Argentina
视频
2021
Experts, including farmers, scientists, groups involved in value chains and representatives from governments, international organizations and development agencies from mountain systems in every arable continent joined forces at the International Conference on Ecological Organic Agriculture in Mountain Ecosystems in Thimphu, Bhutan March 5th to 8th, 2014 to develop an action...
Bhutan
活动
2014
Agriculture is of undeniable importance in the Kingdom of Morocco. Its economic and social weight, its affiliation to the rural world, as well as the diversity of its functions in food, socio-economic and environmental aspects, make it a natural locomotive of development and economic growth. Aware of the country's remarkable...
Morocco
项目
2019