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
NAPPC's mission is to encourage the health of resident and migratory pollinating animals in North America. This year, NAPPC partners will gather virtually from throughout North America and beyond on 19-21 October 2021.
KEYNOTE SPEAKERS INCLUDE:
1. ABRAM BICKSLER, PH.D., FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS
The intersection of sustainable food systems and pollinator...
活动
2021
The National Network of Municipalities and Communities that Promote Agroecology (RENAMA), the Argentine Society of Agroecology (SAAE) and the National Agroecology Directorate (DNAE) of the National Ministry of Agriculture, Livestock and Fisheries, call for the collective construction of the VII Month of Agroecology, to be held between 20 October and...
Argentina
活动
2021
The Collaborative Crop Research Program (CCRP) of the McKnight Foundation is hosting an online gathering ''Farmer-centered research for agroecology: Transforming research, reimagining food systems'' on 25-27 October with contributors from across the globe. Participants will hear stories, perspectives, experiences and evidence from farmers, researchers and the organizations that collaborate with them.
A...
活动
2021
On 27 October at 12:00-14:00 UTC (14:00-16.00 CEST), the Transformative Partnership Platform on Agroecology (TPP) hosted an online event on ‘’Research on Agroecology: Current strengths and innovative futures for sustainable food systems’’.
The topic of agroecological transformation of agri-food systems and its link to the Sustainable Development Goals was one of the most prevalent...
活动
2021
Amid ongoing efforts to mainstream the transformation of agriculture and food systems within the United Nations Framework Convention on Climate Change (UNFCCC) process, the Food and Agriculture Organization of the UN (FAO) convened this side event on 3 November 2021 on the sidelines of the COP 26 negotiations. Discussions focused...
活动
2021