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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：
0083556
负责人：
Scott Bridgham
金额：
$ 9.95万
依托单位：
University of Notre Dame
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2000
资助国家：
美国
起止时间：
2000-09-01 至 2004-06-30
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0083556&HistoricalAwards=false
关键词：
BIOCOMPLEXITY Incubation Activity Biocomplexity Peatlands

项目摘要

0083556BridghamPeatlands 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

0083556布里奇泥炭地是积累了大量土壤有机质的湿地。北方泥炭地是全球碳循环的重要组成部分，含有全球土壤碳库的三分之一。在气候变暖的情况下，这些土壤碳可能被氧化并以二氧化碳和/或甲烷两种重要的温室气体的形式排放到大气中，从而加剧人为引起的气候变化。因此，预测泥炭地对气候变化的响应具有重要意义。这个孵化计划的目标是将两个研究小组联合起来，这两个研究小组已经开发出了显示复杂行为的泥炭地的不同模型。一个模型侧重于碳积累与水文之间的反馈，而另一个模型侧重于植物群落与养分有效性之间的反馈。将为一个全面的模拟模型开发一个框架，该模型可以(i)模拟数千年来泥炭地的形成和发展，以及在景观上形成的不同泥炭地生态系统的最终格局，（ii）探索它们对气候变化的短期响应。该模型将对这些独特生态系统的复杂行为提供深刻的见解，并将在预测气候变化对泥炭地的影响和潜在反馈方面具有不可估量的价值