Forest Dynamics in Heterogenous Environments: Empirical Studies of Spatially Explicit Models

异质环境中的森林动力学：空间显式模型的实证研究

• 批准号: 8918616
• 负责人: Stephen Pacala
• 金额: $ 26.94万
• 依托单位: University of Connecticut
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-02-15 至 1993-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8918616&HistoricalAwards=false
• 关键词: Forest; Dynamics; Heterogenous; Environments; Empirical

This study will develop, calibrate and test a model of forest dynamics that encompasses a broad range of spatial and temporal scales. The research will consist of an integrated program of computer and mathematical modeling, together with empirical studies of nine forest tree species that are components of the transition oak-northern hardwoods forests. The empirical studies will provide the data necessary to calibrate explicitly spatial models of forest communities that include: (1) competition for light, water and mineral nutrients, (2) dispersal, (3) disturbance and (4) soil and topographic heterogeneity. During the study, models that apply to the landscape level and yet retain fine-scale resolution important to single individuals will be developed. The models will be designed so that they may be tailored to forecast the consequences of energy-related and other anthropogenic perturbations such as acid rain, elevated to CO2, and ultraviolet radiation, and global warming. The principal objective of the work is, generally, to understand the factors controlling forest community dynamics and structure, and, specifically, to identify the ecological processes responsible for observed spatial and temporal patterns across a broad range of scales and determine how these processes become represented in scale-dependent pattern.

这项研究将开发、校准和测试一种 森林动态模型，包括广泛的 空间和时间尺度。 该研究将包括一个 计算机和数学建模的综合程序， 并对9种森林树种进行了实证研究， 是橡树-北方硬木过渡林的组成部分。 实证研究将提供必要的数据， 明确校准森林群落的空间模型， 包括：（1）对光照、水分和矿物质养分竞争， (2)扩散，（3）干扰和（4）土壤和地形 异质性 在研究过程中，适用于 但仍保留精细尺度分辨率， 个体将被开发。 模特们将在 设计，以便他们可以定制预测 与能源有关的和其他人为的 扰动，如酸雨，升高到二氧化碳，和紫外线 辐射和全球变暖。 的主要目标 一般来说，工作是了解控制森林的因素， 社区动态和结构，特别是， 负责观测的空间和 时间模式跨越广泛的尺度，并决定 这些过程如何在尺度依赖的 格局