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

World Pulses Day is an opportunity to raise awareness of the nutritional benefits of pulses and their contribution to sustainable food systems and a world without hunger. The yearly World Pulses Day celebration aims to raise awareness of the importance of pulses and highlight their critical role in addressing the challenges of...
活动
2023
Latin American agroecology proposes a transformation of conventional agri-food systems. It is driven by social movements that have succeeded in forming coalitions that have promoted its integration into public policies. These policies involve a range of instruments that are often embedded in programmes that also support organic agriculture and sustainable...
政策简报
2018
The commune of Mzouda, located in the province of Chichaoua, about 74 km from Marrakech, is a plain area close to the mountains. In 2018, in the commune of Mzouda, 72 allotments were created using agroecology approaches: self-fertilizing mounds, compost, and manure, optimized irrigation (with jars), tree planting, green fertilizers, crop...
Morocco
创新
2021
The primary obstacle to sustainable food security is an economic model and thought system, embodied in industrial agriculture, that views life in disassociated parts, obscuring the destructive impact this approach has on humans, natural resources, and the environment. Industrial agriculture is characterized by waste, pollution, and inefficiency, and is a...
论文
2016
Biowatch is among the organisations and international social movements that see agroecology as a means to realise the goal of food sovereignty. In 2007 civil society and social movement organisations representing millions of farmers met in Nyéléni in Mali to launch an international movement for food sovereignty. This movement views...
South Africa
情况说明书
2015