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

The aim of the study is to assess the food security, adapting/mitigation opportunities to climate change and policy situation and draw policy recommendations. The study was conducted in some selected districts of Tigray Region, Ethiopia based on some exemplary interventions such as communities, ISD, BPA and PROLINNOVA-Ethiopia. Agriculture in tropical...
Ethiopia
工作文件
2012
Cultivate! is an international collective that catalyses the transition to healthy food and farming rooted in agroecology. "We envision a world where biodiversity, a rich culture, fertile land and healthy communities are cultivated when we grow, process, purchase and eat food. All over the world, people are currently cultivating the conditions...
网站
2017
As agroecology has increasingly been brought into the international dialogue on the future of food and agriculture, there have been calls for building the evidence base of its performance across the multiple dimensions of sustainability and its capacity to achieve multiple Sustainable Development Goals. In response to this need, FAO...
Lesotho
报告
2022
In the countryside of Andhra Pradesh, an agricultural state in southeastern India, which launched the world's largest agroecology program in 2016, nearly one million farmers have already switched to "natural farming", abandoning GMOs, and pesticides, fungicides and chemical fertilizers. This "natural agriculture" wants to repair the earth and to relieve...
India
音频
2022
It has been claimed that Zero Budget Natural Farming (ZBNF), a burgeoning practice of farming in India based on low inputs and influenced by agroecological principles, has the potential to improve farm viability and food security. However, there is concern that the success of the social movement fueling the adoption...
India
杂志文章
2022