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

A team of researchers from the National University of the Litoral (UNL) and The National Scientific and Technical Research Council in Argentina (CONICET for its acronym in Spanish) evaluated the presence of bird species in two rice crops - one with the use of agrochemicals and the other with agroecological...
Argentina
论文
2020
This new open access book develops a framework for advancing agroecology in shifts towards more just and sustainable food systems focusing on politics and governance. It explores agroecology's potential as a sustainable and socially just alternative to today's dominant food regime.
书籍
2021
Les agriculteurs-trices des zones rurales de montagne au Maroc sont confrontés à de nombreux défis parmi lesquels la pauvreté, la dureté des conditions de vie et la dégradation de l’environnement suite au changement climatique. Le projet d’agro-écologie au Sud du Maroc a été lancé en 2015 par l’Organisation Non Gouvernementale...
Morocco
个案研究
2018
Agroecology is an alternative paradigm for agriculture and food systems that is simultaneously: (a) the application of ecological principles to food and farming systems that emerge from specific socio-ecological and cultural contexts in place-based territories;  (b) a social and political process that centers the knowledge and agency of Indigenous peoples and...
杂志文章
2021
Globally Important Agricultural Heritage Systems (GIAHS) are landscapes of aesthetic beauty that combine agricultural biodiversity, resilient ecosystems and cultural heritage.GIAHS recognizes the Kihambas of Mt. Kilimanjaro as unique agricultural sites, a nature-based solution that protects biodiversity and ensures food security in a changing climate. In the video we meet some...
United Republic of Tanzania
视频
2019