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

CELIA and Conciencia Verde organize an online course on Agroecology and the reconstruction of post-COVID-19 agriculture from 8 to 12 June 2020. This course will be held in Spanish and will cover the following topics: Day 1: The crisis of industrial agriculture including the impact of COVID-19 on agriculture and nutrition by Miguel Altieri; Day 2:...
学习
2020
Smallholder farmers particularly in climate vulnerable developing countries such as Myanmar are facing increasing challenges related to food insecurity and climate change. Research has increasingly pointed towards agro-ecology as a movement, with the science and approach suitable to building the resilience of smallholder farmers. Since 2014, the Myanmar Institute for Integrated Development (MIID) has been actively...
Myanmar
政策简报
2017
From the 15 to the 17 July 2020, the Bio-district della Via Amerina e delle Forre, in the Italian province of Viterbo, hosted the launch of the piloting process for the European and Central Asian context of the The Tool for Agroecology Performance Evaluation (TAPE). Through a partnership with Schola...
Bosnia and Herzegovina - Georgia - Italy - Kyrgyzstan
论文
2020
In order to preserve their tradition, the Manjaq communities have embarked on a process of preserving local rice varieties essential for the organization of certain traditional ceremonies. Faced with these challenges, they have rebuilt their seed capital by making an inventory of all traditional seeds and their importance in traditional...
Guinea-Bissau
个案研究
2019
This booklet is published as part of the EatingCraft International project funded by the European Union under the Erasmus+ programme and is part of a collective writing process undertaken by many CSAs. The publication clarifies the undoubted connection between PGS and CSA and show hoe the two approaches are being similar in their overall...
Belgium - France
书籍
2019