Nutrient acquisition strategies and plant-soil interactions in diversified agroecosystems

多样化农业生态系统中的养分获取策略和植物-土壤相互作用

• 批准号: RGPIN-2022-03503
• 负责人: Isaac, Marney
• 金额: $ 3.13万
• 依托单位: University of Toronto
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=762168
• 关键词: Nutrient; acquisition; strategies; plant; soil

Innovative research is critically needed to identify pathways by which agriculture can reduce its environmental impact, while simultaneously promoting sustainable food systems. Sustainable transitions in agriculture, including the application of agroecological principles to farm design and management, is experiencing a watershed moment, having been identified as the transformative pathway to agricultural sustainability by the United Nations Food and Agricultural Organization. Agroecological strategies, namely enhancing agrobiodiversity in agricultural landscapes, can mitigate many of the negative impacts associated with current food production systems. While enhancing farm diversity can address many pressing environmental issues, fundamental gaps persist in our understanding of how to design and manage diversified agroecosystems. To address these gaps, my research program is designed to advance the diagnostics of diversified agroecosystems and, ultimately, to translate our findings into on-farm practice and policy. This multidisciplinary program prioritizes co-produced research that supports local innovation, and aims to better understand the intersection of people and the plants they grow. The long-term goal of this research program is to understand the biogeochemical dynamics in diversified agroecosystems. This is achieved through an integrative research program focused on quantifying 1) nutrient cycles in diversified farms, 2) crop traits and nutrient acquisition strategies under environmental change, and 3) the success of transitions from conventional to sustainable agricultural systems. In the next five years, this research program will contribute novel: i)applications of contemporary ecological theory into agroecological research, in order to better diagnosis plant-soil interactions in diversified agroecosystems; ii)assessments of nutrient acquisition strategies within the emerging area of crop breeding for organic and diversified agriculture; iii)predictive indicators to overcome limitations in evaluating farm transitions toward sustainable and diversified systems. This research program employs a suite of established and emerging research sites, a cutting-edge analytical platform, and partnerships with researchers and farmers, to achieve key outcomes, including robust research products, evidence-based management and knowledge mobilization, and training of environmental scientists. My research will lead to impacts on the environmental sustainability in Canada's agricultural sector. Findings from this research program will i) contribute to ecosystem service provisioning across agricultural landscapes with collective strategies to enhance diversity, ii) support agroecological transitions toward resilient systems, precisely addressing farm needs for sustainability in Canada and abroad, and iii) generate contemporary insights into agroecosystem policy and practice, benefitting society via healthy and stable agricultural systems.

迫切需要进行创新研究，以确定农业可以减少其环境影响的途径，同时促进可持续的粮食系统。农业的可持续转型，包括将农业生态原则应用于农场设计和管理，正在经历一个分水岭时刻，联合国粮食及农业组织已将其确定为实现农业可持续性的转型途径。农业生态战略，即加强农业景观中的农业生物多样性，可以减轻与当前粮食生产系统相关的许多负面影响。虽然加强农场多样性可以解决许多紧迫的环境问题，但我们对如何设计和管理多样化农业生态系统的理解仍然存在根本性的差距。为了解决这些差距，我的研究计划旨在推进多样化农业生态系统的诊断，并最终将我们的研究结果转化为农场实践和政策。这个多学科计划优先考虑支持当地创新的联合生产研究，旨在更好地了解人与他们种植的植物的交集。 该研究计划的长期目标是了解多样化农业生态系统中的土壤地球化学动态。这是通过一项综合研究计划来实现的，该计划侧重于量化1）多样化农场的养分循环，2）环境变化下的作物性状和养分获取策略，以及3）从传统到可持续农业系统的成功过渡。在未来的五年里，该研究计划将贡献新的：i）现代生态学理论在农业生态学研究中的应用，以更好地诊断多样化农业生态系统中植物-土壤相互作用; ii）在有机和多样化农业作物育种的新兴领域内评估养分获取策略; ㈢预测指标，以克服评估农场向可持续和多样化系统过渡的局限性。该研究计划采用了一套成熟和新兴的研究基地，一个尖端的分析平台，并与研究人员和农民的合作伙伴关系，以实现关键成果，包括强大的研究产品，循证管理和知识动员，以及环境科学家的培训。 我的研究将对加拿大农业部门的环境可持续性产生影响。这项研究计划的结果将有助于在农业景观中提供生态系统服务，并采取集体战略以增强多样性，支持农业生态向弹性系统过渡，精确解决加拿大和国外农业可持续发展的需求，以及iii）对农业生态系统政策和实践产生当代见解，通过健康和稳定的农业系统造福社会。