Development of 3D Root Architecture Models for Tree Species

确定树根系统中的碳是资源密集型的，需要新的工具来理解和描述地下过程。细根一直是许多研究的焦点，但结构性树木根系占树木地下碳根生物量的大部分知之甚少。在过去的10年里，三维树根结构模型得到了快速发展，特别是在欧洲。这个NSERC建议的目标是开发三维建筑根模型杰克松在萨斯喀彻温省的北方森林。来自北方平原和北方盾牌地区的短叶松将挖掘其根系，并使用Fastrak单元用3D数字化仪绘制每个根系。AMAPmod将使用数字化数据（位置，直径等）创建3D建筑根系模型，可以分析各种根系特征和根系生物量。这些数据还将用于另外两个模型FracRoot和Root Typ中，这些模型可以参数化以预测结构根生长和生物量。该项目的新颖之处在于，它将为加拿大的研究人员提供新的工具，用于预测结构性根系发育，可用于应对与气候变化、碳固存和林木遗传改良相关的新挑战。这些树木根系的三维结构模型也将有助于更好地预测根系碳固存，可用于生态系统尺度的碳模型，如碳收支模型（CBM-CFS 3）。据我所知，这将是在加拿大进行的第一项研究，其中将评估北方树种粗木质根结构的3D模型。

Determining carbon in tree roots systems is resource intensive and new tools are needed to understand and describe belowground processes. Fine roots have been the focus of much research but structural tree root systems which account for the majority of belowground carbon root biomass in trees are poorly understood. In the last 10 years there has been a rapid development in 3D tree root architecture models, especially in Europe. The objective of this NSERC proposal is to develop 3D architectural root models for jack pine in the boreal forest in Saskatchewan. Jack pine trees from the Boreal Plains and Boreal Shield regions will have their root systems excavated and each root mapped with a 3D digitizer using a Fastrak unit. The digitized data (location, diameters etc) will be used in the AMAPmod to create 3D architectural root models that can be analyzed for various root characteristics and root biomass. The data will also be used in two other models FracRoot and Root Typ that can be parameterized to predict structural root growth and biomass. This project is novel in that it will provide researchers in Canada with new tools for predicting structural root development that can be used to address the emerging challenges related to climate change, C sequestration and genetic improvements in forest trees. These 3D architecture models of tree root systems will also aid in better prediction of root C sequestration that can be used in ecosystem scale C models such as the Carbon Budget Model (CBM-CFS3). This will be the first study to my knowledge in Canada where 3D models of coarse woody root architecture for boreal tree species will be assessed.