N达勒姆.H.—的 永利app新版本官网地址 has contributed to a first-of-its-kind new 报告 looking at carbon dioxide (CO2) removal in the United States. 马克Ducey, 自然资源与环境教授, is one of the researchers from more than a dozen institutions involved in the high-resolution assessment, 《永利app新版本官网地址》,，描绘了到2050年实现净零温室气体经济的道路.

的 报告, 由劳伦斯利弗莫尔国家实验室的研究人员领导, focuses on steps that can be taken to ensure the nation’s climate security and resilience by cleaning up the Earth’s atmosphere and addressing the root cause of climate change. It also includes an integrated analysis of CO2 removal techniques and resources that are currently available, 以及在实现净零排放的道路上所产生的成本.

Ducey was part of the research team that focused on forests which are critical in absorbing CO2 from the atmosphere and storing it. 因为气候变化, it is estimated that by the middle of the century the ability of the forests to capture CO2 could decrease by a third. 的 researchers that focused on forests in the 报告 looked at three different approaches which include increasing forests by planting trees, maintenance and management approaches and building resilience for forests against stressors from climate change, 就像干旱, 野火, 极端天气和害虫.

“这三种方法都发挥着重要作用, but which is most important really depends on what forest we’re talking about and where we are in the country,”杜西说。. “我们仔细研究了美国的几个地区.S., like the Southeast where we examined expanding forests onto marginally used agriculture land. We also looked at the dry interior West and possible carbon storage benefits to trying to manage trees that are less susceptible to catastrophic fire. 在东北部, 我们研究了更好的木材管理所面临的挑战, 聚焦更大的直径, 长寿命的树木将提供更持久的碳储存, 无论是活树还是它们提供的产品.”

通过使用这些例子, 研究人员能够展示碳效益, the kind of changes that need to be made and how those depend on local conditions.

In 2022, the United States government established a 2050 goal to reach net-zero emissions by decarbonizing our economy, removing CO2 from the atmosphere and storing it at the gigaton scale (at least a billion tons per year). Roads to Removal lays out a road map to this goal and answers the question: How much CO2 is it possible to remove in the United States and at what cost? 报告的结论是，以今天的技术, removing 1 billion metric tons of CO2 per year will annually cost roughly $130 billion in 2050, 或者是0.占当前GDP的5%.

的 报告 says that this ensemble of lowest-cost approaches for CO2 removal would create more than 440,使用可再生能源可以实现这一目标, 利用目前可用的土地和地下地质储存.

的 granular analysis provided in the Roads to Removal 报告 gives decision makers across the United States a lens for location-specific opportunities, 使他们能够做出最适合他们称之为家的地方的决定. 与之前的分析不同, 哪一个使用了综合评估或自上而下的模型, the methods used in Roads to Removal rely on bottom-up calculations and use the most current estimates for resource demands, 各县潜在的二氧化碳去除方法的成本和影响.

这份报告是由联合国和联合国教科文组织联合委托编写的.S. 美国能源部(DOE), 能源效率和可再生能源办公室, 生物能源技术(BETO), 美国能源部高级研究计划局(ARPA-E), 以及化石能源和碳管理办公室(FECM), 在气候工作基金会的额外支持下.

的 永利app新版本官网地址 激励创新，改变我们国家、民族和世界的生活. 超过16个,000 students from 49 states and 82 countries engage with an award-winning faculty in top-ranked programs in business, 工程, 法律, 卫生和公共服务, 文科和理科横跨200多个学习项目. 卡内基R1分类机构, 联合国大学与美国宇航局合作, 美国国家海洋和大气管理局, NSF, 和国家卫生研究院, and received over $210 million in competitive external funding in FY23 to further explore and define the frontiers of land, 海洋与太空.

视频下载
http://www.youtube.com/watch?v=iyuQEXrxBpo
图片来源:Courtesy Roads to Removal