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

Across Latin America, there are eight agroecology schools established by La via Campesina, the world's largest peasant movement, and the Latin American Coordination of Rural Organizations (CLOC for its acronym in Spanish). Better known as the Latin American Agroecological Institutes (IALAs for its acronym in Spanish), these educational institutes are...
Argentina - Brazil - Chile - Colombia - Nicaragua - Paraguay - Venezuela (Bolivarian Republic of)
论文
2021
From February 6 to 16, 2023, DyTAES will organize the 4th edition of the Days of Agroecology which will focus on the theme of territorialization. The general objective of this 4th edition of the Days and Night of Agroecology is to initiate a new cycle of national and local political dialogue to support...
活动
2023
At present, agroecology can be interpreted as a scientific discipline, as a movement or as a practice. In this paper we analyse the historical evolution of the scientific discipline of agroecology with a quantitative bibliometric analysis of 711 publications using the term agroecology and the derived term agroecological, as well...
杂志文章
2009
With the help of multiple partners, FAO has developed a global analytical framework for the multidimensional assessment of the performance of agroecology: Tool for Agroecology Performance Evaluation (TAPE), which aims to: · Inform policymakers, development institutions, and other stakeholders by creating       references to the multidimensional performance of agroecology and...
准则
2019
DCA works to promote Agroecology in all our Right to Food activities because Agroecology is a climate-friendly way to build sustainability and resilience as well as increasing food production. The components of Agroecology help us form strong links between our rights-based approach; farmers’ participation, organisation and empowerment; fair and sustainable agriculture and...
学习
2019