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 course focuses on Sustainable Land Management (SLM) practices, and their place within the global development agenda, specifically in order to achieve target 15.3 of the Sustainable Develo-pment Goals (SDGs), which aims "to achieve a land degradation-neutral world". The course assists policy makers, practitioners and land users in the selection,...
学习
2019
One of our food system's main challenges is the inadequate relationship between the cost of production and production factors as a whole. Therefore, food production and distribution systems are often at a disadvantage to local producers. New research reveals the benefits for farmers and growers, local suppliers, citizens, and the environment...
United Kingdom of Great Britain and Northern Ireland
活动
2021
The University of Vermont’s (UVM) Agroecology & Livelihoods Collaborative (ALC) will offer a graduate summer course on “Introduction to Agroecology”.  This hybrid, graduate level, 4-week course presents an in-depth overview of research and applications in the field of agroecology. The first three weeks of the course are online, and the last week students meet face...
United States of America
学习
2019
Consumers are one of the key stakeholders in the food system, yet their potential and contribution to transitioning current unsustainable food systems to a more agroecological one is rarely recognized. This consumer guide on agroecology presents ten key issues and areas through which agroecology can enhance the protection of consumer rights....
准则
2023
The Initiative for the Central African Forests (CAFI) supports strategic, holistic and country-level REDD+ and Low Emission Development investments while focusing on Central African high-forest cover countries. Its objective is to recognize and preserve the value of the forests in the region to mitigate climate change, reduce poverty and contribute to...
Cameroon - Central African Republic - Congo - Democratic Republic of the Congo - Equatorial Guinea - Gabon
网站
2020