Dissertation Research: Factors Influencing Forest Dynamics in Itasca State Park, MN

一个多学科项目正在进行中，以确定 过去400年来控制森林植被的因素 明尼苏达州西北部的伊塔斯卡州立公园。 采取方法是 根据独立的证据线重建森林，包括 组成、招募、生长和死亡的模式，以及 物理环境，包括气候和火灾，在一个详细的 在一平方公里的研究区域内。 看台内的格局将 被聚集以记录当地的林分和景观 过去的模式 方法包括化石分析 花粉、木炭、烧失量和 层状湖泊沉积物，400年前红松的火痕 树木，林分年龄结构，树木生长通过年轮宽度，土壤， 光的制度，以及再生和死亡的模式。 结果 将展示改变的许多重要影响 可用于森林的植被的物理环境 管理和预测对气候变化、土地利用变化、 使用和消防制度。

A multidiscipinary project is in progress to determine the factors controlling forest vegetation over the last 400 years at Itasca State Park, northwest Minnesota. The approach is to reconstruct from independent lines of evidence forests, including patterns of composition, recruitment, growth, and mortality, and physical environments, including climate and fire, in a detailed fashion across a one km2 study area. Patterns within stands will be agglomerated to document both local stand and landscape patterns through the past. Methods include analysis of fossil pollen, charcoal, loss-on-ignition, and thin-sections of laminated lake sediments, fire-scars of 400 year old red pine trees, stand age structures, tree growth via ring widths, soils, light regimes, and modes of regeneration and mortality. Results will demonstrate many of the important influences of changing physical environments on vegetation that can be used for forest management and prediction of responses to changing climate, land- use, and fire regimes.