BIOCOMPLEXITY--Incubation Activity on Biocomplexity in Peatlands

生物复杂性--泥炭地生物复杂性孵化活动

基本信息

批准号：
0432577
负责人：
Scott Bridgham
金额：
$ 6.39万
依托单位：
University of Oregon Eugene
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2004
资助国家：
美国
起止时间：
2004-03-01 至 2005-02-28
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0432577&HistoricalAwards=false
关键词：
BIOCOMPLEXITY Incubation Activity Biocomplexity Peatlands

项目摘要

Peatlands are wetlands that have accumulated significant amounts of soil organic matter. Northern peatlands are an important component of the global carbon cycle and contain one-third of the global soil carbon pool. Under a warmer climate, this soil carbon may be oxidized and emitted to the atmosphere as carbon dioxide and/or methane, two important greenhouse gases, and thus exacerbate human-induced climate change. Therefore, it is important to predict the response of peatlands to climate change. The objective of this incubation proposal is to bring together two research groups that have developed separate models of peatlands which display complex behaviors. One model focuses on feedbacks between carbon accumulation and hydrology, whereas the other model focuses on feedbacks between plant communities and nutrient availability. A framework will be developed for a comprehensive simulation model that can both (i) simulate the initiation and development of peatlands over thousands of years and the resulting pattern of different peatland ecosystems that form on the landscape, and (ii) explore their shorter term response to climate change. This model will provide great insight into the complex behaviors of these unique ecosystems and will be invaluable in predicting the effects and potential feedbacks of climate change on peatlands

泥炭地是湿地积累了大量的土壤有机物。北部的泥炭地是全球碳循环的重要组成部分，其中包含全球土壤碳池的三分之一。在温暖的气候下，这种土壤碳可以被氧化并发射到大气中，例如二氧化碳和/或甲烷，两种重要的温室气体，从而加剧了人类引起的气候变化。因此，重要的是要预测泥炭地对气候变化的反应。该孵化建议的目的是将两个研究小组汇集在一起，这些研究小组开发了单独的泥炭地模型，这些模型表现出复杂的行为。一种模型着重于碳积累与水文学之间的反馈，而另一个模型则侧重于植物群落和营养利用率之间的反馈。将为综合模拟模型开发一个框架，该模型可以（i）在数千年的时间内模拟泥炭地的启动和开发以及在景观上形成的不同泥炭地生态系统的模式，以及（ii）探索他们对气候变化的较短术语响应。该模型将为这些独特的生态系统的复杂行为提供深入的洞察力，并且在预测气候变化对泥炭地的影响和潜在反馈方面将是无价的