权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

LTREB: Rising Global Temperatures and Long-term Performance of Tropical Rain Forest Trees

LTREB：全球气温上升和热带雨林树木的长期表现

基本信息

批准号：
0129038
负责人：
Deborah Clark
金额：
$ 29.97万
依托单位：
University of Missouri-Saint Louis
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2002
资助国家：
美国
起止时间：
2002-02-01 至 2007-01-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0129038&HistoricalAwards=false
关键词：
LTREB Rising Global Temperatures Long

项目摘要

0129038ClarkLTREBThis proposal will continue the TREES Project, an 18-year study designed to examine the ecological bases of life history diversity and population ecology in tropical forest trees. The core activity is an annual census of 2300 individuals of ten canopy and emergent tree species in a 250 ha area of old-growth tropical wet forest. Growth, mortality, physical damage, and microsite conditions of all trees have been measured annually since 1983. All trees are mapped and incorporated into the La Selva Geographic Information System, and their distribution and performance have been studies in relation to both soil nutrients and topography over a meso-scale landscape. Two compelling scientific issues will be addressed during the next five years. One question with major environmental, political and economic implications is whether tropical rain forests are experiencing a decline in forest productivity with global warming. The second issue is the original core driver of the project, to elucidate the diverse life history modes represented among tropical rain forest canopy trees. The core TREES data set is the largest and longest record available of concurrent annually-measured growth and microsite conditions for tropical rain forest trees. This project clearly links population ecology with global climate change, and has important implications for conservation and maintenance of biodiversity in tropical ecosystems.

0129038ClarkLTREB该提案将继续TREES项目，该项目是一项为期18年的研究，旨在研究热带森林树木生活史多样性和种群生态学的生态基础。核心活动是在250公顷的古老热带潮湿森林中对10个树冠和新兴树种的2300个个体进行年度普查。自1983年以来，每年对所有树木的生长、死亡率、物理损害和微立地条件进行测量。所有的树木都被绘制成地图，并纳入了La Selva地理信息系统，其分布和性能已被研究的土壤养分和地形在中尺度景观。在今后五年中将处理两个引人注目的科学问题。一个具有重大环境、政治和经济影响的问题是，随着全球变暖，热带雨林的森林生产力是否正在下降。第二个问题是该项目的原始核心驱动力，阐明热带雨林树冠树木中代表的多样性生活史模式。核心TREES数据集是热带雨林树木的年度测量生长和微观条件的最大和最长的记录。该项目明确地将种群生态学与全球气候变化联系起来，对保护和维持热带生态系统的生物多样性具有重要意义。