Dissertation Research: Acclimation of photosynthesis and respiration to temperature under climate change: Understanding variation among species and biomes to improve climate models

论文研究：气候变化下光合作用和呼吸对温度的适应：了解物种和生物群落之间的变化以改进气候模型

• 批准号: 1311358
• 负责人: Jeffrey Dukes
• 金额: $ 1.99万
• 依托单位: Purdue University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-07-01 至 2016-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1311358&HistoricalAwards=false
• 关键词: Dissertation; Research; Acclimation; photosynthesis; respiration

The Earth System Models (ESMs) used to make climate projections are continually becoming more sophisticated, and now incorporate a wide range of terrestrial processes. However, some potentially important processes are still omitted because they are either poorly understood or not quantified well enough to warrant inclusion. One such process is the decrease in sensitivity of photosynthesis and respiration to temperature that occurs after plants are given time to adjust, or acclimate, to a temperature change. This process, termed temperature acclimation, could critically influence projections of atmospheric CO2 increase by altering the amount of CO2 taken up by plants in a future, warmer world. This project will support a series of field measurements designed to quantify the potential of a variety of plant species (grasses, trees, crops) from a variety of biomes (tropical, temperate, and boreal) to acclimate to different temperatures. Species will be measured at pairs of sites that lie at different latitudes and, thus, have different growing season temperatures. Measurements at the different sites will be compared to assess the ability of each species to acclimate to the different temperatures. These field measurements will supplement a larger dissertation project designed to improve climate projections through the creation of temperature acclimation formulations suitable for ESMs.The proposed project will support the mission of research coordination networks such as INTERFACE and FORECAST in the U.S. and TERRABITES in Europe to promote the interdisciplinary combination of empirical research and Earth System Modeling. The data gathered from this project will help to create first-of-their-kind formulations for photosynthesis and respiration that include temperature acclimation. The formulations will be designed in such a way that they can be easily implemented into most ESMs. Data will be submitted to multiple international databases, where it will be archived, stored, and made available to other researchers.

用于进行气候预测的地球系统模型（ESM）不断变得更加复杂，现在结合了广泛的陆地过程。但是，仍然省略了一些潜在的重要过程，因为它们的理解较低，或者不够量化以至于不足以保证包容。这样的过程之一就是光合作用和对温度的呼吸的敏感性降低，而温度的呼吸有时间调节或适应温度变化。这一过程称为温度适应，可以通过改变未来较温暖的世界中植物吸收的二氧化碳量来严重影响大气二氧化碳的预测。该项目将支持一系列田间测量，旨在量化各种植物（草，树木，农作物）的潜力，从多种生物群（热带，温带和北方）以适应不同的温度。物种将以不同的位于不同纬度的位置对，因此具有不同的生长季节温度。将比较不同地点的测量值，以评估每个物种适应不同温度的能力。这些现场测量将补充一个较大的论文项目，旨在通过创建适合ESM的温度适应配方来改善气候预测。拟议的项目将支持研究协调网络的使命，例如在美国的界面和预测，欧洲和欧洲的Terrabites，以促进经验研究和地球系统模型的跨学科组合。从该项目中收集的数据将有助于创建用于光合作用和呼吸的首次风格配方，其中包括温度适应。这些配方的设计方式可以轻松地将其实现到大多数ESM中。数据将提交到多个国际数据库，在该数据库中将被存档，存储并提供给其他研究人员。