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 green revolution raised Vietnamese farmers' awareness converted their natural farming methods into conventional agriculture using short-term rice and vegetable hybrids and intensive inputs of agrochemicals. Unfortunately, Vietnamese society nowadays has a considerable concern about conventional farming's side-effect on human health and the natural environment. There is a robust demand...
Viet Nam
工作文件
2020
生态农业不是一项新发明,可在二十世纪二十年代后的科学文献中找到踪迹,并 在家庭型农户的实践、促进可持续性的草根社会运动以及全世界各国的公共政策中得 到体现。在最近一段时间内,生态农业进入了国际性和联合国机构的讨论范畴. 生态农业与其他可持续发展举措根本不同。生态农业是基于自下而上和地 域性进程,根据各地具体情况提供有针对性的对策。生态农业创新以知识共创 为基础,将科学与生产者的传统型、应用型和本地化知识结合起来。通过提高 生产者和社区的自主性和适应能力,生态农业助其成为变革的关键动因。
书籍
2018
In 2020, the Tool for Agroecology Performance Evaluation (TAPE) was used in Mali to assess the status of the agroecological transition of local farms and to identify its correlation with farms' quantitative performance across the economic, social, and environmental dimensions of sustainability. This study aims to present the evidence on the...
Mali
论文
2022
This report shares the findings of the Agroecology Policy Research Initiative, which examines the state of agroecology policy in Canada by gathering insights from those involved in policy, research, and practice related to agriculture and food. This includes government staff, parliamentarians, lobbyists, farmers, food systems researchers, and NGO policy advocates....
Canada
报告
2023
The foundation of any agroecological food system is a secure land title, especially for farmers and pastoralists displaced from ancestral lands and vulnerable to land grabs. This session discussed land rights and access to land for agroecological producers. It explored indigenous and peasant experiences, especially from the perspective of youth interested...
活动
2021