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

Farming in Europe has been transformed over the last 70 years by policies, technologies, and practices that sought to guarantee a stable supply of affordable food. But success has come at the cost of mounting environmental degradation. Under Horizon 2020, the European Union (EU) funded several research projects dedicated to advancing...
论文
2021
The initiative is situated some 15km from the town of Guder in the Tuki Kuti District of the West Showa zone of Oromia Regional State. The mission of the farmers participating in this initiative is to improve the health and fertility of their farms by using organic methods and products (such...
Ethiopia
创新
2021
Over the last 25 years, the process of domesticating culturally-important, highly-nutritious, indigenous food-tree species. Integrating these over-looked ‘Cinderella’ species into conventional farming systems as new crops is playing a critical role in raising the productivity of staple food crops and improving the livelihoods of poor smallholder farmers. This experience has important...
杂志文章
2019
The initiative is located in the Niayes region, bordering the maritime fringe of northern Senegal (Dakar, Thiès, Louga and Saint-Louis). The Federation of Vegetable Producers of the Niayes Zone (FPMN), with the support of the Wallonia-Brussels cooperation, has initiated a treatment and valorization of the waste of the slaughterhouses of Dakar. ...
Senegal
创新
2021
"Now we live well," say both Givaldo and Nina dos Santos, after showing visiting farmers their 1.25-hectare farm in Brazil's semi-arid Northeast, which is small but has a great variety of fruit trees, thanks to innovative water and production techniques.
Brazil
论文
2018