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

Berkeley University and Growing Roots organize the 2021 Agroecological City conference to engage all involved in critical conversations around building sustainable and resilient cities and exploring creative pathways to get there. The conference will take place on 2-11 March and join urban farmers, food and farming justice advocates, policymakers, educators, community organizers,...
United States of America
活动
2021
Védegylet and Greenpeace Hungary organize this conference to show the importance of learning and researching in agroecology by the world's leading agricultural universities. Agroecological agriculture is increasingly recognized as the fundamental solution to solving global food security, climate, ecosystems, and society. Representatives by Wageningen University & Research (WUR), Swedish University of Agricultural Sciences (SLU), Innovative Farmers Programme, University of Gastronomic...
Hungary
活动
2021
FAO, the Global Soil Partnership, the Intergovernmental Technical Panel on Soils (ITPS), together with the UN Convention on Biological Diversity (CBD), the Global Soil Biodiversity Initiative (GSBI), and the Science-Policy Interface of the United Nations Convention to Combat Desertification (SPI UNCCD), are pleased to invite you to the Global Symposium on Soil Biodiversity (GSOBI)...
活动
2021
It is widely recognized that a radical transformation of food and agriculture systems is urgently needed in order to address converging social, economic, health and ecological crises. The potential of agroecology to transform food systems and render them more resilient, sustainable and inclusive is increasingly recognized and backed by a...
活动
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What is the role of policymakers in empowering the long-term, resilient transformation of the food and agricultural systems? The digital event “Scaling up Agroecology in the Himalayas Together” aims to inspire and guide key decision-makers on policies supporting agroecology and organic agriculture. High-level experts will provide in-depth analyses of approaches and tools to help...
Bhutan - India - Nepal
活动
2021