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

12 May 2022  The characteristics of the agroecological transition require transforming the way farmers are accompanied in their changes of practices and production systems. Farmer Field Schools (FFS) are relevant participatory mechanisms for this, as they increase farmers' capacity to experiment, produce knowledge and build innovations themselves. However, there is a...
India - Mali - Togo
活动
2022
The Alliance for Food Sovereignty in Africa (AFSA) is hosting a convening to build a shared vision for the growth of African agroecological entrepreneurs and territorial markets centred on equitable and sustainable development for a healthy and sustainable food system. The pandemic of COVID-19 exposed the weakness of global industrial food...
Uganda
活动
2022
The international action day is back! On 14 September, organic and agroecological farmers around the world will take to social media to share their work, the challenges they face, and how we can support them. While #IGrowYourFood is a moment for farmers, everyone’s invited to the conversation⁠—and to help amplify...
活动
2022
  After three years of implementation, the UN Decade of Family Farming 2019-2028 (UNDFF) will host its first Global Forum on 19-22 September 2022. Co-organized by FAO-IFAD, the Forum will leverage the experiences of different actors to take stock of the achievements and challenges faced since launching the UNDFF. Discussions will...
活动
2022
This third dialogue of the Agroecology Dialogue Series, an initiative of FAO and Biovision foundation, in support of the Agroecology Coalition, will reflect on the current global food crisis and the looming scarcity of agricultural inputs. Record prices in fertilizers, supply chain interruption, increasing dependence on synthetic agricultural inputs, and...
活动
2022