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

On the 1st of January 2016, the UN and all its member states officially introduced the 2030 Agenda for Sustainable Development; a plan of action based on 17 Sustainable Development Goals (SDGs) to address the main global challenges of the coming 15 years (United Nations, 2016). Solving these complex challenges...
报告
2019
Sustainable food and agriculture are at the heart of the 2030 Agenda for Sustainable Development. One of the ways of achieving Better Production, Better Nutrition, Better Environment, and Better Life, leaving no one behind, is through agroecology. Agroecology helps ensure food and nutritional security, reduce poverty, mitigate climate change and...
视频
2021
This website from the Oakland Insitute collects thirty-three case studies on the success of agroecological agriculture in Africa. They demonstrate with facts and figures how an agricultural transformation respectful of the farmers and their environment can yield economic, social and food securit benefits while also fighting climate change and restoring soils...
Benin - Burkina Faso - Democratic Republic of the Congo - Ethiopia - Ghana - Kenya - Malawi - Mali - Niger - Rwanda - Sierra Leone - Uganda - United Republic of Tanzania - Zambia - Zimbabwe
网站
2018
Video que describe la situación de la agricultura familiar en Argentina, en el marco del Encuentro del MERCOSUR Ampliado: Máquinas y Herramientas para la Agricultura Familiar.
Argentina
视频
2013
  UN Secretary-General Antonio Guterres recently declared that the world has entered the era of “global boiling”1. Our daily news underscores this alarming picture with record-breaking meteorological disasters. Climate change has become impossible to ignore. And so has the fact that its effects are unequally distributed across systems, regions, and sectors,...
报告
2023