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 initiative is located in Central India, encompassing the Vidarbha District and the adjoining districts of Madhya Pradesh and Chhattisgarh. Dietary-based anemia is a widespread problem, especially amongst young women. The area is facing an acute agrarian crisis. One of its causes is climate change and the increasingly unpredictable monsoon...
India
创新
2021
The impacts of chemical pesticides on the environment, including biodiversity, water, air and soil, and on human health, have become a major concern for civil society and consumers. They are also a major issue for the sustainability of agricultural systems. Recently, the Farm to Fork and Biodiversity European strategies set...
杂志文章
2023
Agroecology has many faces and in order to scale up and remain a legitimate approach in bio-culturally diverse contexts such as Latin America, it has to keep the balance between science, practice, and social movements. The power of local networks, including children; the deconstruction of colonial perceptions toward native foods and rural...
Chile
论文
2021
India
个案研究
In western Burkina Faso, on-farm manure production has long been confined to the edges of houses and cattle pens. With increasing land pressure and the remoteness of fields, manure production was hampered by transport constraints, and a large proportion of raw material needed in manure production, such as crop residues...
Burkina Faso
创新
2018