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 International Meeting of Researchers on Agroecology is led by the “Alliance of Women in Agroecology (AMA-AWA)”, which was formed in 2013. The different academic and social sectors that belong to this group bet on: 1) promoting and making visible the participation of women in the science of Agroecology; 2)...
Colombia
活动
2020
The National Institute of Agricultural Technology (INTA) of Argentina organize a cycle of webinars through instagram. Pablo Adrian Tittonell and Francisco Rodrigo Tizon will discuss on the 10 Elements of Agroecology of FAO in the first meeting that will take place on 23 April 2020 at 18:00-19:00 (GMT-3). 
Argentina
活动
2020
The Network of Institutions of Higher Education with Agroecology Programs in Colombia (IESAC), formed by the University of Cauca, Universidad de la Amazía, COREDI Technology, Minute University of God Corporation - UNIMINUTO, National University (Bogotá and Palmira headquarters) and Tolima University, will organize the seventh version of the International Seminar and Eleventh National Symposium on Agroecology, which...
Colombia
活动
2020
The National Institute of Agricultural Technology (INTA) of Argentina organizes a cycle of 11 virtual meetings on agroecology through Instagram. The meetings are happening every Thursday from 18:00 to 19:30 (GMT-3). A special issue on "Agroecology at FAO" will be held on 30 June 2020 at 16:00 (GMT-3) with the participation of Anne...
Argentina
活动
2020
The webinar of the FAO Technical network on Sustainable Crop Prodcution and Agroecology will discuss current knowledge concerning the potential use of agroecological approaches in the fall armyworm (FAW) response, highlighting experiences from parts of Africa, South America and South Asia. Agroecological approaches offer culturally appropriate, low cost options for...
Brazil - India - Malawi - Zambia
活动
2020