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

We all depend on healthy ecosystems for food and energy security, water supplies and biodiversity. Their continued degradation contributes to climate change and enhances the risk of an ecological collapse. The widespread loss of functioning ecosystems would be catastrophic for our planet and a huge setback on all the progress...
网站
2019
The Centre for Integrated Rural and Tribal Development (CIRTD), a long term partner of ActionAid India in Sundargarh district of Odisha, has implemented the project, “Enhancing income and securing the food and nutrition of Small and Marginal Farmers through Promotion of Sustainable Agriculture in Rainfed Region”. CIRTD works predominantly in...
India
个案研究
2017
The film tells the special relationship of Matteo Bolognesi with agriculture: original, organic and biodynamic, but without giving up technology. With small investments from the Rural Development Programme of his region, has created a niche market in which he is producing essential oils, lavender, rosemary, spices for the well-being and...
Italy
视频
2012
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. This year, the #WorldPulsesDay campaign will raise awareness about the importance of the benefits that pulses provide to agrifood systems and the environment and the need...
活动
2023
Naar rechtvaardige, veerkrachtige en duurzame voedselsystemen
网站
2019