Hybrid poplar productivity under high forest and short rotation woody crop systems under boreal conditions

北方条件下高林和短轮伐期木本作物系统下的杂交杨生产力

基本信息

批准号：
529894-2018
负责人：
DesRochers, Annie
金额：
$ 3.4万
依托单位：
Université du Québec en Abitibi-Témiscamingue
依托单位国家：
加拿大
项目类别：
Collaborative Research and Development Grants
财政年份：
2018
资助国家：
加拿大
起止时间：
2018-01-01 至 2019-12-31
项目状态：
已结题

来源：
https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=649125
关键词：
Hybrid poplar productivity under forest

项目摘要

Hybrid poplars have the fastest growth potential of all tree species found in Canada. Their use is however relatively recent in the boreal zones of Canada, and some uncertainties remain in relation to their hardiness and growth performance under differing sites conditions and silvicultural management scenarios. Using already-established plantations, we first want to determine the effects of environmental factors and cultivation practices on the yields of fast growing hybrid poplar plantations. More specifically, we seek to 1) evaluate the yield potential of several hybrid poplar cultivars planted along a large pedo-climatic gradient covering the Abitibi-Témiscamingue and Nord-du-Québec regions and 2) determine the effects of cultural system (i.e. high forest plantation vs. short rotation coppice) and fertilization on plantation yields. Ultimately, we seek to determine the set of pedo-climatic conditions and cultivar characteristics (e.g. branch form, root system, physiology), and cultivation practices that are conducive to greater yields in the clay belt region or north western Quebec. Results of this project will allow the Canadian industry operating under boreal conditions to choose appropriate management practices to maximize biomass yields under high forest and short-rotation woody crops systems. The results will guide management (industrial and regulators) and materialize the use of these fast-growing plantations in the toolset of foresters to produce at least part of their timber supply, close to mills, and ultimately be less reliant on natural forests and alleviate wood shortages and harvesting limitations on public lands.

杂交杨树在加拿大发现的所有树种中具有最快的生长潜力，但它们在加拿大北方地区的使用相对较新，并且其在不同场地条件和造林管理方案下的耐寒性和生长性能仍然存在一些不确定性。在已经建立的种植园的情景中，我们首先要确定环境因素和栽培实践对快速生长的杂交杨树种植园产量的影响。更具体地说，我们寻求 1) 评估沿大型种植园种植的几种杂交杨树品种的产量潜力。覆盖阿比蒂比-蒂米斯卡明格和魁北克北部地区的土壤气候梯度，2) 确定文化系统（即高森林种植园与短轮伐矮林）和施肥对种植园产量的影响。土壤气候条件和品种特征（例如分枝形式、根系、生理学）以及有利于提高产量的栽培方法该项目的结果将使在北方条件下运营的加拿大工业能够选择适当的管理实践，以最大限度地提高高森林和短轮换木本作物系统的生物量产量。该结果将指导管理（工业和监管机构）。）并在林务人员的工具集中使用这些快速生长的种植园来生产至少部分木材供应，靠近工厂，最终减少对天然林的依赖，缓解木材短缺和公众采伐限制土地。