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

Greenpeace’s Food and Farming Vision describes what Ecological Farming means, and how it can be summarised in seven overarching, interdependent principles – based on a growing body of scientific evidence on agroecology. Ecological Farming combines modern science and innovation with respect for nature and biodiversity. It ensures healthy farming and healthy food....
报告
2015
Burkina Faso is a landlocked country in the Sahel whose economy is highly dominated by agriculture and livestock husbandry, with more than 70% of the population living in rural areas. The prevailing farming system is smallholder agriculture based on cereal production, especially sorghum (Sorghum bicolor (L.) Moench) and pearl millet...
Burkina Faso
个案研究
2017
In Mali, agriculture is the main source of employment. Over 80% of the population is engaged in agriculture that is mostly carried out by small farmers with income of less than US$1 per day. Sorghum (Sorghum bicolor (L.) Moench) is an important cereal grain used as food and animal fodder...
Mali
个案研究
2017
Agroecologie enables the improvement of agricultural production through the enhancement of local natural resources and traditional know-how. It contributes to maintaining biodiversity and restoring land in drylands, which are particularly threatened by global warming and food insecurity, while contributing to achieving the Sustainable Development Goals. Within the framework of the...
Morocco
创新
2022
Emile Frison is a member of the International Panel of Experts on Sustainable Food Systems. His entire career has been focused on international agricultural research for development. He was Director-General of Bioversity International from 2003 to 2013 and is the lead author of the IPES-Food report From Uniformity to Diversity: a paradigm...
视频
2021