Nitrogen fertilization response of cedar and hemlock plantations in coastal British Columbia

不列颠哥伦比亚省沿海雪松和铁杉种植园的氮肥反应

• 批准号: 521684-2017
• 负责人: Eskelson, Bianca
• 金额: $ 1.82万
• 依托单位: University of British Columbia
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=640338
• 关键词: Nitrogen; fertilization; response; cedar; hemlock

Fertilization responses at the stand-level have been quantified for western redcedar and western hemlockplantations in coastal British Columbia (BC). However, the routinely applied growth and yield models operateat the tree-level and understanding of tree-level responses to fertilization treatments in coastal BC is limited.With a renewed interest in fertilization responses for carbon sequestration and storage, forest industry in BCfaces the challenge to better understand tree-level responses to fertilization treatments in order to refine theirforest fertilization applications. This project will use 30 years of re-measurement data from long-termsilvicultural trials in the Salal Cedar Hemlock Integrated Research Program from Northern Vancouver Island,BC, to quantify the tree-level responses to nitrogen fertilization for both western hemlock and western redcedarin three planting densities (500, 1500, 2055 stems/ha). The analysis performed in this project will lay thegroundwork for building a TASS fertilization module for coastal BC. Ultimately, the work will allow BC forestindustry to refine their fertilization management applications to further increase their timber production andimprove their carbon sequestration strategies. The proposed approach can then be adapted to other tree speciesand forest types in BC and across Canada.

施肥反应在林分水平已被量化的西部红杉和西部铁杉种植在沿海不列颠哥伦比亚省（BC）。然而，常规应用的生长和产量模型是在树木水平上运行的，并且对BC沿海地区树木水平对施肥处理的响应的理解是有限的，随着人们对施肥对碳固存的响应的重新关注，BC林业面临着更好地理解树木水平对施肥处理的响应以改进其森林施肥应用的挑战。该项目将使用来自北方温哥华岛的Salal Cedar Hemlock综合研究计划的长期造林试验的30年重新测量数据，以量化西部铁杉和西部红杉三种种植密度（500，1500，2055茎/公顷）对氮肥的树木水平响应。本项目的分析将为建立塔斯沿海BC施肥模块奠定基础。最终，这项工作将使不列颠哥伦比亚省林业能够完善其施肥管理应用程序，以进一步增加其木材产量并改善其碳封存战略。然后，所提出的方法可以适用于BC省和加拿大各地的其他树种和森林类型。