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

SustainSahel project's full name is 'Synergistic use and protection of natural resources for rural livelihoods through systematic integration of crops, shrubs and livestock in the Sahel'. The overall goal of SustainSahel is to promote practices that enhance soil quality and yields, build resilience towards climate change, and contribute to food security and...
项目
2020
Financed by the French Development Agency (AFD) and the European Commission, with a budget of 12 million euros, and orchestrated by Group for Research and Technology Exchanges (GRET), with scientific coordination by the French Agricultural Research Centre for International Development (CIRAD), the far-reaching five-year project Agroecology and Safe Food System...
Cambodia - Lao People's Democratic Republic - Myanmar - Viet Nam
项目
2020
The Latin American Scientific Society of Agroecology (SOCLA), announces the VIII Latin American Congress of Agroecology under the theme "Agroecology. Latin American identity weaving the territory: urgent transformations for life". It will take place online on November 25, 26 and 27, 2020, under the coordination of the Organizing Commission of...
活动
2020
Biovision Foundation, CIDSE, IPES-Food, AgroecologyNow! at the Center for Agroecology Water and Resilience (CAWR) of Coventry University, the Institute of Development Studies (IDS), Coalition Contre la Faim, DanChurchAid, are presenting a webinar on  “Shifting European Finance towards Food System Transformation”. The event will take place on the 26th of November, from 2 to 4 PM CET. It is widely recognized that a...
活动
2020
Andhra Pradesh Community Managed Natural Farming (APCNF) is organizing a webinar as a part of the successful implementation of Pre-Monsoon Dry sowing in Andhra Pradesh. This initiative has started as a pilot in Anantapuram district, a semi-arid region of Andhra Pradesh to demonstrate the concept of harnessing the water vapor...
India
活动
2020