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 objective is to introduce the global analytical framework on AE to FAO staff in decentralized offices in the region and to external partners engaged in agroecological approaches such as staff from CSOs, academia, research institutions and NGOs so that they can pilot the GKP in their various contexts.  The...
Thailand
活动
2019
 Agroecology Europe (AEEU) is an association of members who wants to exchange knowledge and experiences on agroecology and to support the transition toward agroecological practices and policies. To support exchange, reflection and bottom-up contributions, the association will organise together with local farmers, universities, social movement organisations and non-governmental organisations, the second Agroecology...
Greece
活动
2019
The FAO Technical Network on Sustainable Crop Production and Agroecology, SP2 and SP4 organize on Tuesday 1 of October from 14:30-16:00 (CEST)  a seminar on ''Promoting sustinable urban and periurban agriculture: an example of agroecological practices in Rosario (Argentina)''.The Seminar will take place in FAO Headquarters, Malasya Room (B227) and it will be conducted in English...
Argentina
活动
2019
The Venezuelan Association of Agroecology (AVA) is a broad group, made up of social organizations, farmers, academics, and other associated actors interested in contributing to the transformation of food systems, towards food sovereignty from an agroecological perspective. The Congress will take place in Caracas during the 17 and 19 of October. In its third...
Venezuela (Bolivarian Republic of)
活动
2019
The First Chilean Congress of Agroecology, organized by the University of La Frontera and the Chilean chapter of the Latin American Scientific Society of Agroecology (SOCLA-Chile), will be held at the Pucón Campus of the University of La Frontera during the 17 and 18 of October 2019. Under the slogan...
Chile
活动
2019