气候变化
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研究显示新西兰周边海洋热浪加剧
Xin Hua Wang· 2025-10-19 01:41
Core Viewpoint - New Zealand's surrounding marine waters are experiencing rising temperatures and increasing frequency of marine heatwaves, which may significantly impact fisheries and marine ecosystems [1] Summary by Relevant Categories Temperature Changes - From 1982 to 2022, the surface sea temperature in New Zealand's nearby waters has increased by 0.2 to 0.3 degrees Celsius every decade, while the bottom temperature has risen by approximately 0.1 degrees Celsius per decade [1] Marine Heatwaves - Marine heatwaves, defined as abnormal sea temperature increases lasting five days or more, have become more frequent and intense in recent years [1] - Under high greenhouse gas emission scenarios, the intensity of marine heatwaves is expected to potentially double by the end of this century [1] Impact on Fisheries and Ecosystems - The research indicates that while areas most affected by heatwaves have been identified, more data is needed to better predict the specific responses of ecosystems and potential risks [1] - The findings can assist New Zealand's fisheries and related sectors in adapting to climate change [1]
粮食烘干机卖空了
经济观察报· 2025-10-18 08:06
Group 1 - The article highlights the urgent demand for grain dryers due to continuous autumn rains affecting harvests in northern provinces, leading to significant crop damage and increased reliance on drying equipment [3][5][6] - Major equipment manufacturers are ramping up production to meet the soaring demand, with one company doubling its workforce and increasing daily output from 15 to 30 units, yet still facing immense order pressure [3][14] - The average rainfall in northern provinces has reached historical highs, causing unprecedented flooding and crop issues, with farmers experiencing severe losses and increased moisture levels in harvested grains [4][22] Group 2 - The installation of grain dryers has increased since the government issued guidelines to enhance drying capacity, but the current number remains insufficient to meet the needs of small farmers and grain collectors [6][15] - Farmers are resorting to emergency measures, such as using public spaces for drying grains, as many existing dryers can only cater to large-scale operations due to processing capacity and operational costs [6][14] - The market for grain dryers is expanding rapidly, with sales expected to grow from 1,650 units in 2023 to nearly 3,000 units by 2025, driven by climate change and the need for effective grain management [21][24] Group 3 - The article discusses the impact of climate change on agricultural practices, suggesting that planting systems and management techniques need to be adjusted to adapt to increasing rainfall in northern regions and droughts in southern areas [23][24] - Experts predict that the frequency of flooding in the north and drought in the south may increase, necessitating a reevaluation of crop planting strategies and resource allocation [23][24]
北京林业大学发表最新Science论文
生物世界· 2025-10-18 01:00
随着干旱持续时间延长且强度加大,预计对陆地初级生产力的影响将逐渐加剧。然而,一些生态系统似乎能够适应多年干旱,其生产力的下降幅度在干旱 持续时间增加时保持不变或逐渐减小。 编辑丨王多鱼 排版丨水成文 气候变化正使全球许多地区遭遇更严重、持续时间更长的干旱。一些生态系统对日益加剧的干旱表现出了一定的适应能力,但随着干旱程度的加重, 这种情况可能会发生变化。 2025 年 10 月 17 日,北京林业大学 庾强 教授团队联合全球 28 个国家 126 家单位的 177 位科研人员,在国际顶尖学术期刊 Science 发表了题为: Drought intensity and duration interact to magnify losses in primary productivity ( 干旱强度和持续时间互作加剧初级生产力的损失 ) 的研究论文。 该研究发现,随着干旱强度增加和持续时间延长,草原和灌丛生态系统会从逐步适应转向生产力急速衰退。 论文链接 : https://www.science.org/doi/10.1126/science.ads8144 https://www.nature.com/a ...
气候变化影响,澳大利亚热带雨林“吸碳”变“排碳”
Sou Hu Cai Jing· 2025-10-17 09:55
Core Viewpoint - A recent study published in the British journal Nature indicates that extreme weather events due to climate change have significantly increased tree mortality rates in the tropical rainforests of Queensland, Australia, transforming these carbon-absorbing forests into carbon emission sources [1][3]. Group 1: Research Findings - The study, initiated by multiple academic institutions from Australia, the UK, and France, tracked the growth of tropical rainforests in Queensland since the 1970s [3]. - From 1970 to 1980, the average annual net carbon absorption per hectare of rainforest was approximately one ton [3]. - However, between 2010 and 2019, the situation reversed, with rainforests releasing nearly the same amount of carbon per hectare annually [3]. Group 2: Climate Change Impact - The research highlights that the effects of climate change extend beyond increased temperatures and droughts to include more frequent cyclonic activity, which severely damages the rainforest ecosystem [5]. - The carbon absorbed during tree growth can no longer offset the carbon released due to large-scale tree mortality [5]. - Researchers express concern that more rainforests may face similar challenges in the future and urge immediate action to reduce greenhouse gas emissions to preserve these vital forests' role in mitigating global warming [5].
专家:中美贸易紧张局势短期内难以根本性缓和
Zhong Guo Qing Nian Bao· 2025-10-17 04:30
Core Viewpoint - The new round of trade tensions between China and the U.S. is unlikely to fundamentally ease in the short term, but both sides have the motivation to avoid a complete economic decoupling [1] Group 1: Trade Relations and Measures - Since the Madrid economic talks in September, the U.S. has continued to introduce a series of restrictive measures against China, including adding multiple Chinese entities to export control lists, which has severely damaged the atmosphere for trade talks [1] - On October 9, China announced export control measures on rare earths and other related items, while on October 10, the U.S. threatened to impose a 100% tariff on Chinese goods starting November 1 [1][2] - The alternating threats and conciliatory remarks from the U.S. reflect a strategy to exert pressure while also attempting to calm market reactions to tariff threats [3] Group 2: Economic Impact and Strategic Considerations - China's export controls on rare earths are expected to significantly impact the U.S. military industry, indicating that U.S. attempts to suppress China will not succeed [2] - The U.S. faces political and economic obstacles in imposing high tariffs on China, as such measures would burden the U.S. economy and face opposition from the American business community [3] - The future trajectory of U.S.-China trade tensions is characterized by a coexistence of competition and cooperation, with structural contradictions remaining difficult to resolve [4] Group 3: Potential Areas for Cooperation - Non-traditional security cooperation, such as in climate change and public health, may become breakthrough areas for U.S.-China collaboration [4]
研究:南极海域甲烷逸出点激增
Xin Hua She· 2025-10-17 03:07
Core Insights - An international study led by New Zealand's Earth Science Organization has found a significant increase in methane seep points in the Antarctic region, raising concerns about the relationship between this phenomenon and climate change [1] - The study indicates that these seep points are mostly newly formed, suggesting a major change in methane emission patterns around New Zealand's continental shelf [1] - Methane is a potent greenhouse gas, and scientists are investigating its sources and the connection to escalating global warming [1] Summary by Sections Methane Seep Points - Methane seepage refers to the release of methane and other chemicals from beneath the seabed into the water, with some forming bubbles that reach the surface [1] - The first seep point was discovered in Antarctica in 2012, and the number has been continuously increasing, with similar phenomena observed in the Arctic [1] - The research team recorded dozens of new methane seep points in the shallow waters of the Ross Sea, Antarctica [1] Research Methodology - The research utilized remotely operated vehicles and deployed underwater divers to explore methane seep points at various depths in the Ross Sea [1] - Last year, the team unexpectedly found dozens of new seep points at Cape Evans on Ross Island [1] Future Implications - The lead researcher, Sara Seabrook, expressed excitement with each new discovery, but also anxiety over the potential rapid release of more methane into the atmosphere, which many climate change prediction studies have not yet accounted for [1] - The implications of this trend for the nearshore Antarctic environment in the next 5 to 10 years are concerning [2]
十年共识·五年同行——2025零碳使命国际气候峰会即将召开
Feng Huang Wang Cai Jing· 2025-10-17 03:02
自动播放 今年是《巴黎协定》签署十周年,也是中国提出"双碳"目标五周年,标志着全球气候行动迈入更加关键 的阶段。凤凰卫视集团联合多家国际机构将于10月23日至24日在北京凤凰中心隆重举办第五届"零碳使 命国际气候峰会",峰会以"十年共识·五年同行"为主题,旨在汇聚各方智慧,共同探讨在气候治理新格 局下应对气候变化的战略与行动,助力中国碳中和愿景及全球减排目标的实现。 ...
美国十余州就太阳能项目资金被撤起诉特朗普政府
Zhong Guo Xin Wen Wang· 2025-10-17 02:31
Core Viewpoint - The lawsuit filed by attorneys general from over ten states against the Trump administration alleges the unlawful termination of $7 billion in funding for nationwide solar energy projects [1] Group 1: Legal Action - Attorneys general from Washington, Minnesota, and Arizona have submitted a lawsuit in the U.S. District Court for the Western District of Washington, claiming the termination of funding is illegal [1] - The lawsuit names the Environmental Protection Agency (EPA) and its administrator, Lee Zeldin, as defendants [1] - The lawsuit is supported by Democratic attorneys general from multiple states, including California, Colorado, Connecticut, and others [1] Group 2: Government Statements - Washington Attorney General Bob Ferguson stated that Congress passed a solar program to help reduce electricity costs, but the government ignored the law [1] - The EPA, under the leadership of Lee Zeldin, described the solar funding program as a "waste of money" following the passage of the Trump administration's tax and spending bill [1]
气候变化 澳大利亚热带雨林“吸碳”变“排碳”
Yang Shi Xin Wen Ke Hu Duan· 2025-10-17 00:46
Core Insights - An international study indicates that due to climate change and increased extreme weather, the tropical rainforests in Queensland, Australia, are experiencing higher tree mortality, transforming them from carbon sinks to carbon sources [1] - The research, conducted by academic institutions from Australia, the UK, and France, analyzed the growth of 20 tropical rainforest sites in Queensland since the 1970s, revealing concerning trends [1] - The study highlights that climate change is not only causing higher temperatures and droughts but also leading to more cyclones, which further damage the rainforests [1] Summary by Categories Climate Change Impact - The study found that from 1970 to 1980, these rainforests could net absorb approximately 1000 kilograms of carbon per hectare per year, while from 2010 to 2019, they were net releasing a similar amount of carbon [1] - Researchers emphasize that the carbon absorbed by trees during growth is now outweighed by the carbon released upon tree death [1] Research Findings - The first author of the report, Hannah Kahl from Western Sydney University, stated that forests can absorb some of the carbon dioxide released from burning fossil fuels, which helps mitigate climate change, but this function is now under threat [1] - Co-author David Bowman from Oxford University urged stakeholders to take urgent action to reduce greenhouse gas emissions to allow these irreplaceable forests to continue their role in combating global warming [1]
专访联合国开发计划署原署长施泰纳:绿色转型本质是对新型经济形态的投资
Mei Ri Jing Ji Xin Wen· 2025-10-16 15:40
Core Insights - The 2025 Global Turning Point Conference emphasizes that the window for reversing climate change is rapidly closing, with the global climate change irreversible critical point accelerating towards reality [2][3] Group 1: Climate Change and Its Implications - The report indicates that 2024 is projected to be the hottest year on record, highlighting the urgency of addressing climate change [1] - Scientific evidence suggests that climate change impacts are accelerating exponentially, with ecosystems being highly sensitive to changes in fundamental conditions like rainfall and temperature [2] - The Amazon rainforest and ocean systems are cited as examples of ecosystems that could reach critical failure points if temperature thresholds are exceeded [2] Group 2: Global Cooperation and Green Transition - The rise of trade protectionism poses challenges for reshaping global cooperation towards green transition, which is essential for avoiding ecological collapse [3] - Green transition is framed as an investment in new economic forms rather than merely pollution control or ecosystem restoration [2][3] - Renewable energy technologies are now capable of meeting energy demands without compromising the planet's habitability, positioning green transition as the dominant direction for global economic development [2] Group 3: Economic Development and Green Transition - The relationship between economic development and green transition is evolving; sustainable practices in renewable energy and clean transportation can drive economic progress [3][4] - The argument that economic progress must come at the expense of existing economic structures is increasingly viewed as outdated, particularly in the context of China's rapid shift towards clean and sustainable technologies [4] - Investment in renewable energy can provide affordable electricity to impoverished populations, demonstrating that economic choices significantly impact energy accessibility [4]