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

Indigenous peoples' movements are critical to scale up agroecology. As guardians of biodiversity and ancestral knowledge, Indigenous peoples' struggles in defense of their territories and rights converge with key principles of agroecology, which makes this approach not just a set of practices, but a holistic vision for thinking about food...
论文
2024
Agroecology 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...
Burkina Faso
创新
2022
This video depicts the agroecological transition in O'kambor and Sakkarach as conducted by the Provincial Department of Agriculture, Forestry, and Fisheries of Preah Vihear with support from the Department of Agricultural Land Resource Management (DALARM), General Department of Agriculture (GDA), and CIRAD.
视频
2022
This podcast depicts the history of Women's Self Help Economic Groups and their role in moving an entire state into profitable agroecological farming--for health, biodiversity, and resilience. This interview with Vijay Kumar shows and answers the question of how to scale up regenerative agriculture in the context of Andhra Pradesh, a state in Southeast...
India
音频
2024
As announced in the EU Biodiversity and Farm to Fork strategies and in the Zero Pollution Action Plan, the European Commission is developing an Integrated Nutrient Management Action Plan (INMAP) to tackle the currently unsustainable nutrient flows in the EU. The INMAP will aim to deliver on the European Green Deal’s...
论文
2022