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

Nanjing University shows its support for Agroecology by hosting this Conference that gathers civil society, academia, government officials, farmers and consumers to discuss their concerns about Agroecology to be able to address them through a holistic approach. The Conference will address agroecological themes such as sustainable transition towards ecological agriculture where...
China
活动
2019
This event is held under the framework of the LIVESEED project funded by the European Commission  and the Swiss Government. The project, that started in June 2018, includes 40 partners from 18 countries. Academia, networks and associations will gather on 8-9 May to discuss the current problems around production, marketing and conservation...
Spain
活动
2019
El Colegio de la Frontera Sur (ECOSUR) will host this Congress to discuss Mexican Agroecology, food sovereignty, knowledge, ‘’cosmovision’’ and biocultural heritage. Marginalization, food dependence and the effects of climate change make Mexico vulnerable as a country, especially within the social strata that have fewer economic resources. One way to reverse this...
Mexico
活动
2019
UNDP, FAO, Agroecology Fund, International Panel of Experts on Sustainable Food Systems (IPES FOOD) and Ecoagriculture Partners present a Café Webinar onSustainable Food Systems for a Resilient Planet and Healthy People that will be broadcast live. Over half of the world population is directly engaged in agriculture for survival. Yet in...
活动
2019
The Superior Agricultural School of Coimbra will hold this Conference organized by the Portuguese Association of Biological Agriculture (AGROBIO). Particularly, the conference will take place over two days. The first day will be focused on biological agriculture, legal framework, marketing and consumption of organic products. In the second day, both...
Portugal
活动
2019