Assessing and modeling the impacts of treated municipal biosolid amendments on spruce plantation nutrition and growth in Nova Scotia, Canada

评估和模拟经过处理的城市生物固体修正对加拿大新斯科舍省云杉种植园营养和生长的影响

• 批准号: 463513-2014
• 负责人: Burton, David
• 金额: $ 4.01万
• 依托单位: Dalhousie University
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=577074
• 关键词: Assessing; modeling; impacts; treated; municipal

The primary objective of this project is to develop a forest nutrient management decision support tool to promote sustainable forest management in Nova Scotia, with applicability elsewhere in Atlantic Canada. A secondary objective is to evaluate the potential for using alkaline-stabilized municipal biosolids as a potential soil amendment to help remediate the impacts of acid deposition and calcium depletion in eastern Canadian forest soils. These objectives will be met by: (i) calibration and validation of the forest ecosystem, stand-level growth model FORECAST for use in Nova Scotia; (ii) conducting two comprehensive field trials using alkaline-stabilized biosolids on white spruce plantations and integrating results into FORECAST modelling; (iii) conducting a series of forest soil and alkaline amendment incubation trials and integrating results into FORECAST modelling; (iv) conducting an operational and economic analysis of methods to apply alkaline-stabilized biosolids in Nova Scotia spruce plantations; (v) using FORECAST to evaluate the sustainability of projected yields under current plantation management practices in Nova Scotia; and (vi) using FORECAST to evaluate the nutrient sustainability of alternative plantation management regimes, including those with biosolids fertilization. The impact of intensive management and long-term acid deposition on softwood plantation nutrient sustainability, and the ability to remediate these impacts, is currently unknown in Atlantic Canada. By systematically studying the nutrient status of sample plantations in response to soil amendments (in both field and laboratory settings), and linking this to forest nutrition modelling and decision support tool development, we will advance our understanding of plantation nutrient cycling and our ability to develop robust management tools to maintain or enhance the long-term productivity of these systems.

该项目的主要目标是开发一种森林养分管理决策支持工具，以促进新斯科舍省的可持续森林管理，并适用于加拿大大西洋其他地区。第二个目标是评估使用碱稳定的城市生物固体作为潜在土壤改良剂的潜力，以帮助补救加拿大东部森林土壤中酸沉积和钙枯竭的影响。这些目标将通过以下方式实现：(i)校准和验证用于新斯科舍省的森林生态系统、林分水平生长预测模型；在白云杉人工林上使用碱稳定的生物固体进行两次综合实地试验，并将结果纳入预报模型；（三）进行一系列森林土壤和碱性修正的孵化试验，并将结果纳入预报模型；对在新斯科舍省云杉人工林应用碱稳定生物固体的方法进行业务和经济分析；利用FORECAST评估新斯科舍省现行种植园管理办法下预计产量的可持续性；（六）利用FORECAST评价替代人工林管理制度的养分可持续性，包括使用生物固体施肥的制度。