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

Being the kernel of the traditional agriculture of China, and one of the major practices in developing ecological agriculture, intercropping still occupies an important position in modern agriculture in China as well as other parts of the world. One of the advantages of intercropping are higher yields relative to monocultures,...
China
杂志文章
2016
The Agroecology Europe Forum is a 3-day in-person event gathering people from all over Europe and beyond to meet in dialogue and discuss some of the most pressing issues and present solutions for today’s food systems.  By bringing together a variety of stakeholders from various movements and territories, we aim to...
活动
2023
"Life in Syntropy" is the new short film from Agenda Gotsch made specially to be presented at COP21 - Paris. This film put together some of the most remarkable experiences in Syntropic Agriculture, with brand new images and interviews.
Brazil
视频
2015
This policy brief discusses how feebate policies could upscale organic agriculture and food self-sufficiency in Bhutan, specifically looking at rice production. The simulations show that a feebate (fee and rebate) policy coupled with promotion and training in agroecological farming methods could incentivize widespread adoption of agroecology, achieving both 100 percent organic production...
政策简报
2022
Este número recoge una variedad diversa de autores/as y entidades que trabajan en ganadería extensiva, dando espacio a artículos que analizan tanto los obstáculos como las oportunidades del sector. Entre ellos, destacan: el pastoreo racional y sus servicios ecosistémicos (de la Universidad de Extremadura), la diferenciación de los productos de...
Spain
书籍
2020