Collaborative research: Remote sensing of foliar chemistry to reconstruct the genealogy of canopy trees in a Neotropical rain forest.

合作研究：叶化学遥感重建新热带雨林冠层树木的谱系。

• 批准号: 1146405
• 负责人: Gregory Asner
• 金额: $ 3.48万
• 依托单位: Carnegie Institution of Washington
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-07-01 至 2015-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1146405&HistoricalAwards=false
• 关键词: Collaborative; research; Remote; sensing; foliar

This project will investigate whether variation in leaf chemistry between trees in different locations in a tropical forest is determined by who their parent trees were or by differences in local environmental conditions. Individual trees of the same species in the tropical rain forest on Barro Colorado Island (BCI), Panama, differ in the chemical composition of their leaves as well as in their DNA. This project aims to develop new techniques that use this variation to map the genealogy of the trees in a forest from the air. Researchers will first directly determine which trees in each of three canopy species are descended from which others for a number of trees by collecting information on the DNA of each species. Next, differences in DNA will be related to seven chemical properties of the leaves that can be detected from high-resolution observations by an imaging spectrometer (the Carnegie AToMS system) designed to acquire measurements of biological diversity and foliar chemistry in species-rich, tropical rain forests. Finally, aerial images of these chemical properties of individual trees of the species over a wider area will be used to detect genetic lineages of trees without having to collect samples directly. In addition to addressing the ?nature vs. nurture? question, the project will seek to provide a new tool for using remote sensing to identify the genetic lineages of the trees in a forest, a large-scale level of genetic detail rarely achieved to date.The project contributes to the development of infrastructure for research and education by improving capacity for understanding biological diversity throughout large landscapes using advanced airborne remote sensing. Exposure to these technologies will help to prepare future generations of scholars for careers in science and natural resource management.

这个项目将调查热带森林中不同位置树木之间的叶化学差异是由谁是它们的母树决定的，还是由当地环境条件的差异决定的。在巴拿马巴罗科罗拉多岛(BCI)的热带雨林中，同一物种的每一棵树的叶子的化学成分以及DNA都不同。该项目旨在开发新的技术，利用这种变异从空中绘制森林中树木的系谱。研究人员将首先通过收集每个树种的DNA信息，直接确定三个树冠物种中的每一个树种中的哪些树是其他树种的后代，以及一些树的其他树种。接下来，DNA的差异将与树叶的七种化学特性有关，这些特性可以通过成像光谱仪(卡内基原子系统)的高分辨率观测来检测，该光谱仪旨在获取物种丰富的热带雨林中的生物多样性和叶化学的测量结果。最后，该物种在更大范围内个体树木的这些化学性质的航空图像将被用来检测树木的遗传谱系，而不必直接收集样本。除了解决先天与后天的矛盾之外？在这一问题上，该项目将寻求提供一种新的工具，利用遥感来确定森林中树木的遗传谱系，这是迄今为止罕见的大规模遗传细节。该项目通过利用先进的航空遥感提高了解大片地貌中生物多样性的能力，从而促进研究和教育基础设施的发展。接触这些技术将有助于为未来几代学者在科学和自然资源管理方面的职业生涯做好准备。