Workshop on: "Advancing Toward Closure of the Carbon, Water, and Nutrient Cycles in Temperature Forest Ecosystems;" June 10-15, 1990; Granby, Colorado

本次研讨会将评估目前知识的充分性，以开发和验证温带森林生态系统中碳、水和营养循环的封闭系统模型。封闭系统模型是那些考虑所有进入和离开系统的质量通量的模型。为了本提案的目的，生态系统被认为是森林林分。这些循环，无论是单独的还是组合的，都将被检查。研讨会的形式将是一系列主题论文，以设定场景并提供最新信息。随后将举行结构严密的讨论会，其目的首先是评估与质量通量有关的过程和机制方面关于生态系统功能的知识现状，其次是评估开发封闭系统模型的可行性。如果大家同意模型可以并且应该被开发，那么参与者将被要求概述模型的结构、层次（根据过程和时间步骤）和输入需求。如果认为封闭系统模型尚不可行，则分析原因并建议构建此类模型所需的信息。会议的成果将是一系列论文，将发表在国际期刊上。这些文件将包括主题文件、讨论小组提出的一份审查文件、与会者提交的个案研究文件和根据会议讨论和建议提出的关于封闭系统模式的文件。讲习班将有森林生物地球化学领域的一些世界专家参加。生物地球化学模型是评估全球气候变化对生物系统影响的有用工具。这个车间的产品将是及时和重要的。

This workshop will assess the adequacy of current knowledge for the development and validation of closed-system models of carbon, water, and nutrient cycles in temperate forest ecosystems. Closed system models are those that account for all of the mass fluxes into and out of a system. For the purposes of this proposal, ecosystems are considered to be forest stands. The cycles, either alone or in combination, will be examined. The format of the workshop will be a series of keynote papers to set the scene and provide up-to-date information. These will be followed by tightly structured discussion sessions aimed, first , at assessing the current state of knowledge about ecosystem function in terms of the processes and mechanisms related to mass fluxes, and, second, at evaluating the feasibility of developing closed-system models. If it is agreed that models can and should be developed, participants will be asked to outline their structure, level (in terms of processes and time steps), and input requirements. If it is considered that closed-system models are not yet feasible, there will be an analysis of the reasons and recommendations about the information needed to construct such models. The product of the meeting will be a series of papers, to be published in an international journal. These will include the keynote papers, a review paper derived from the discussion groups, case-study papers submitted by participants and papers on the closed-system models, based on the discussions and recommendations of the meeting. The workshop will involve some of the world experts in the area of forest biogeochemistry. Biogeochemical models are useful tools for assessing the effects of global climate change on biological systems. The products of this workshop will be timely and important.