Collaborative Research: Structural and Functional Roles of Coarse Woody Debris in Tropical Stream-Riparian-Upslope Forest Ecosystems

合作研究：热带溪流-河岸-上坡森林生态系统中粗木本碎片的结构和功能作用

• 批准号: 9317258
• 负责人: Alan Covich
• 金额: $ 25万
• 依托单位: Colorado State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-08-01 至 1999-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9317258&HistoricalAwards=false
• 关键词: Collaborative; Research; Structural; Functional; Roles

9317258 Covich This research addresses effects of wood decomposition on ecosystem processes in stream, riparian, and upslope locations in a tropical rainforest ecosystem. Manipulation of woody debris (removal and addition, as well as natural amounts of wood) will indicate the role of wood in vegetation growth, aquatic and terrestrial community structure, and nutrient cycling processes. Carbon and nutrient pools, mineralization and retention, plant growth, and community composition will be measured and compared among the treated plots. The five-year project will indicate the length of time wood continues to influence ecosystem processes. %%% Little is known about ecosystem responses to large inputs of woody debris following disturbances, especially in tropical ecosystems. Large woody debris decomposes relatively slowly and provides substrates and nutrients for a variety of organisms. Therefore, the large inputs of woody material following disturbances can influence ecosystem processes significantly over long time periods. This research will indicate the magnitude of effect of manipulated levels of woody debris in stream, riparian and upslope ecosystems in a tropical rainforest. ***

9317258这项研究探讨了木材分解对热带雨林生态系统中溪流、河岸和上坡地区生态系统过程的影响。木质碎屑的处理(移除和添加，以及木材的自然数量)将表明木材在植被生长、水生和陆地群落结构以及养分循环过程中的作用。碳和营养库、矿化和保持、植物生长和群落组成将在处理的地块中进行测量和比较。这个为期五年的项目将表明木材继续影响生态系统过程的时间长度。%关于生态系统对干扰后大量木质碎片输入的反应知之甚少，特别是在热带生态系统中。大的木质碎屑分解相对较慢，为各种生物体提供底物和营养。因此，干扰后大量木质材料的输入会在很长一段时间内对生态系统过程产生重大影响。这项研究将指出热带雨林溪流、河岸和上坡生态系统中木质垃圾被操纵水平的影响程度。***