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

This review of the agroecology debate in South Africa is part of the research project ''Transitions to Agroecological Food Systems: a case for policy support (TAFS)'' launched in 2020. Its main objective is to provide policymakers and stakeholders with convincing arguments about the importance and adapted ways of promoting agroecological transitions...
South Africa
报告
2021
In Malawi and Zambia, a group of researchers from World Agroforestry (ICRAF), Zambia Agricultural Research Institute (ZARI), and Malawi's Department of Agricultural Research Services (DARS) is implementing a five-year research project: "Developing Smallholder Strategies for Fall Armyworm Management in Southern Africa: Examining the Effectiveness of Ecological Control Options", in sub-Saharan Africa....
Malawi - Zambia
项目
2021
Rina Vasquetto is part of a large family of farmers in Adelia María, in the province of Córdoba, Argentina. Her history and passion for agriculture and livestock have been with her since she was a child. Today she manages two farms, "El Puente" and "El Mate", with 680 hectares in...
Argentina
视频
2021
The mission of the Voluntary Association of Agricultural General Development Health and Reconstruction Alliance in India (VAAGDHARA) is to create and nurture vibrant institutions of poor and tribal peoples in Western India so that they have sustainable livelihoods through scientific, indigenous and appropriate knowledge and technologies and their children are well...
India
创新
2021
is a free online course developed by Agroecology Fund + Statistics for Sustainable Development  The course aims to provide a clear process of how to build an evidence-based case for efficacy and the importance of #agroecology to support grassroots organizations' efforts. This self-paced course is structured into five modules and uses case examples from the...
学习
2023