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Global evidence of human well-being and biodiversity impacts of natural climate solutions
IF 25.7 1区 环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES Pub Date : 2024-12-02 DOI: 10.1038/s41893-024-01454-z
Charlotte H. Chang, James T. Erbaugh, Paola Fajardo, Luci Lu, István Molnár, Dávid Papp, Brian E. Robinson, Kemen G. Austin, Miguel Castro, Samantha H. Cheng, Susan Cook-Patton, Peter W. Ellis, Teevrat Garg, Jacob P. Hochard, Timm Kroeger, Robert I. McDonald, Erin E. Poor, Lindsey S. Smart, Andrew R. Tilman, Preston Welker, Stephen A. Wood, Yuta J. Masuda
Natural climate solutions (NCS) play a critical role in climate change mitigation. NCS can generate win–win co-benefits for biodiversity and human well-being, but they can also involve trade-offs (co-impacts). However, the massive evidence base on NCS co-benefits and possible trade-offs is poorly understood. We employ large language models to assess over 2 million published journal articles, primarily written in English, finding 257,266 relevant studies on NCS co-impacts. Using machine learning methods to extract data (for example, study location, species and other key variables), we create a global evidence map on NCS co-impacts. We find that global evidence on NCS co-impacts has grown approximately tenfold in three decades, and some of the most abundant evidence relates to NCS that have lower mitigation potential. Studies often examine multiple NCS, indicating some natural complementarities. Finally, we identify countries with high carbon mitigation potential but a relatively weak body of evidence on NCS co-impacts. Through effective methods and systematic and representative data on NCS co-impacts, we provide timely insights to inform NCS-related research and action globally. Rich evidence of the potential co-benefits and trade-offs of natural climate solutions is available but remains poorly understood. Assessing the literature with machine learning methods, this study maps and analyses the growing evidence of trade-offs in natural climate solutions globally.
自然气候解决方案(NCS)在减缓气候变化方面发挥着至关重要的作用。自然气候解决方案可为生物多样性和人类福祉带来双赢的共同利益,但也可能涉及权衡(共同影响)。然而,人们对有关非碳氢化合物共同效益和可能的权衡的大量证据却知之甚少。我们采用大型语言模型评估了 200 多万篇已发表的期刊文章(主要以英文撰写),发现了 257,266 篇关于非碳氢化合物共同影响的相关研究。利用机器学习方法提取数据(例如研究地点、物种和其他关键变量),我们绘制了非碳氢化合物共同影响的全球证据图。我们发现,在三十年间,全球有关非核心 文化遗产共同影响的证据增长了约十倍,其中一些最丰富的证据与减缓潜力较低的非核心 文化遗产有关。研究通常会对多种非碳氢化合物进行考察,这表明存在一些自然互补性。最后,我们发现一些国家具有较高的碳减排潜力,但有关非碳氢化合物共同影响的证据却相对薄弱。通过有效的方法和系统的、有代表性的非碳捕获物共同影响数据,我们为全球非碳捕获物相关研究和行动提供了及时的启示。关于自然气候解决方案的潜在共同效益和权衡的证据非常丰富,但人们对这些证据的了解仍然很少。本研究利用机器学习方法对文献进行评估,绘制并分析了全球范围内自然气候解决方案权衡的越来越多的证据。
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引用次数: 0
Potential increase of neurotoxic mercury risk in global blue carbon nature-based solutions 全球基于自然的蓝碳解决方案中神经毒性汞风险的潜在增加
IF 25.7 1区 环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES Pub Date : 2024-11-29 DOI: 10.1038/s41893-024-01471-y
Zhijia Ci, Wenjie Shen, Baowei Chen, Yanbin Li, Yongguang Yin, Xiaoshan Zhang, Yong Cai
Blue carbon strategies are now being proposed as a promising, nature-based solution for achieving multiple benefits. Here we provide field evidence on the co-accumulation of organic carbon and neurotoxic mercury (Hg) in coastal environments. We estimate the global Hg stock in the top metre of sediment of blue carbon ecosystems to be 21,306 to 125,018 Mg (mean = 73,162 Mg), highlighting that Blue Hg stock is an important, dynamic, reactive, but overlooked Hg pool in global Hg cycle and health risk. Preserving and expanding blue carbon ecosystems have been hailed as a climate-friendly nature-based solution to store carbon. However, this can cause co-accumulation of neurotoxic mercury, highlighting the need for holistic climate solutions.
蓝碳战略现在被认为是一种很有前途的、基于自然的解决方案,可以实现多重效益。在这里,我们提供了沿海环境中有机碳和神经毒性汞(Hg)共同积累的实地证据。我们估计蓝碳生态系统表层沉积物中全球汞储量为21,306 ~ 125,018 Mg(平均= 73,162 Mg),强调蓝汞储量是全球汞循环和健康风险中一个重要的、动态的、反应性的、但被忽视的汞库。保护和扩大蓝碳生态系统被誉为一种基于自然的气候友好型碳储存解决方案。然而,这可能导致神经毒性汞的共同积累,凸显了整体气候解决方案的必要性。
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引用次数: 0
Mercury risk in blue carbon ecosystems 蓝碳生态系统中的汞风险
IF 25.7 1区 环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES Pub Date : 2024-11-29 DOI: 10.1038/s41893-024-01472-x
Zhijia Ci, Wenjie Shen, Baowei Chen, Yanbin Li, Yongguang Yin, Xiaoshan Zhang, Yong Cai
The co-accumulation and close interactions of climate-friendly organic carbon and neurotoxic mercury in coastal ecosystems show that nature-based solutions to the climate crisis can alter the global mercury cycle and risk. Nature-based mitigation and adaptation strategies should therefore consider the carbon–mercury nexus to maximize sustainability goals.
沿海生态系统中气候友好型有机碳和神经毒性汞的共同积累和密切相互作用表明,基于自然的气候危机解决方案可以改变全球汞循环和风险。因此,基于自然的缓解和适应战略应考虑碳汞关系,以最大限度地实现可持续性目标。
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引用次数: 0
Nutrient recycling potential of excreta for global crop and grassland production
IF 25.7 1区 环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES Pub Date : 2024-11-26 DOI: 10.1038/s41893-024-01467-8
Mariana Devault, Dominic Woolf, Johannes Lehmann
Nutrient recycling from wastes to agriculture can contribute to food production by closing yield gaps, yet the global amount of poorly utilized nitrogen (N), phosphorus (P) and potassium (K) in excreta at a subnational scale has been insufficiently explored. The global amounts found in human excreta and poorly utilized livestock excreta represent 16% (±7%), 8% (±9%) and 14% (±6%) of crop and grassland N, P and K needs, respectively. National recycling of nutrients in poorly utilized excreta could reduce global net imports of mineral fertilizers by 41% N, 3% P and 36% K. In countries where nutrient supply through locally available livestock excreta and mineral fertilizers do not meet nutrient requirements by crops and grasslands, the recycling of poorly utilized excreta could reduce this difference by, on average, 20% N, 11% P and 13% K, therefore contributing to the move towards a circular economy between food consumption and agriculture. Human and livestock excreta are rich sources of important agricultural nutrients, but are currently poorly utilized. Recycling these resources can help close the gap where mineral fertilizers are insufficient.
从废弃物到农业的养分循环利用可缩小产量差距,从而促进粮食生产,但在国家以下范围内,全球排泄物中未得到充分利用的氮(N)、磷(P)和钾(K)的数量尚未得到充分探究。在人类排泄物和未充分利用的牲畜排泄物中发现的全球数量分别占作物和草地氮、磷和钾需求量的 16% (±7%)、8% (±9%) 和 14% (±6%)。在一些国家,当地牲畜排泄物和矿物肥料所提供的养分不能满足作物和草地对养分的需求,对利用率低的排泄物进行回收利用,可将这一差距平均缩小 20%(氮)、11%(磷)和 13%(钾),从而有助于在食品消费和农业之间实现循环经济。人类和牲畜的排泄物是重要农业养分的丰富来源,但目前利用率很低。回收利用这些资源有助于弥补矿物肥料不足的缺口。
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引用次数: 0
Realizing soil health for food security in Africa
IF 25.7 1区 环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES Pub Date : 2024-11-26 DOI: 10.1038/s41893-024-01482-9
Sieg Snapp, Jordan Chamberlin, Leigh Winowiecki, Tilahun Amede, Ermias Aynekulu, Samuel Gameda, Jeffrey E. Herrick, Rattan Lal, Paswel Marenya, Latha Nagarajan, Zachary Stewart, Tor Vågen
Dramatic improvements in soil health are necessary to increase agricultural production and reduce crop failures. We provide recommendations for scaling of soil health and fertility management in Africa through practical approaches to prioritization, evidence-based policy and effective extension.
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引用次数: 0
Author Correction: An exploration of biodiversity limits to grazing ruminant milk and meat production 作者更正:对放牧反刍动物奶和肉生产的生物多样性限制的探索
IF 25.7 1区 环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES Pub Date : 2024-11-25 DOI: 10.1038/s41893-024-01498-1
Kajsa Resare Sahlin, Line J. Gordon, Regina Lindborg, Johannes Piipponen, Pierre Van Rysselberge, Julia Rouet-Leduc, Elin Röös
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引用次数: 0
Energy recovery and saving in municipal wastewater treatment engineering practices
IF 25.7 1区 环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES Pub Date : 2024-11-22 DOI: 10.1038/s41893-024-01478-5
Ao Gong, Guangteng Wang, Xiang Qi, Yunfei He, Xufei Yang, Xia Huang, Peng Liang
Municipal wastewater treatment (MWT) plays a critical role in safeguarding aquatic ecosystems but is highly energy intensive. Assessing the energy recovery and saving potential of MWT technologies is essential to propel the sustainable transformation of this sector. Prioritizing practical viability, this study compiled data from 50 real-world cases, including both full-scale engineering projects and pilot studies, to systematically evaluate the energy recovery and saving potential of different technologies. The effectiveness of these technologies was systematically assessed by comparing their theoretical and practical energy densities. The results indicate that anaerobic digestion for methane production is so far the most efficient method for chemical energy recovery. Among various energy-saving strategies, water source heat pumps were identified as an effective approach for substantial energy savings. However, it is important to recognize that the heat energy, calculated solely on the basis of the temperature difference in wastewater, cannot be directly compared with the electrical energy recovered from other conversion processes. The role of heat energy in energy saving needs to be carefully reassessed and repositioned. This study provides valuable guidance for future energy optimization and the sustainable transformation of MWT practices. Reshaping the currently energy-intensive municipal wastewater treatment (MWT) practices is urgently needed. This study systematically assessed the energy recovery and saving potential of different technologies, providing valuable guidance for future optimizations of MWT practices.
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引用次数: 0
A better fate for PVC PVC的命运更美好
IF 25.7 1区 环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES Pub Date : 2024-11-22 DOI: 10.1038/s41893-024-01479-4
Pedro Moura, Dionisios G. Vlachos
A critical component of plastics waste, polyvinyl chloride, is tough to recycle efficiently and sustainably owing to its high chlorine content. Now, research shows how to convert polyvinyl chloride mixed with polypropylene, at room temperature, into chlorine-free hydrocarbons.
塑料废物的关键成分聚氯乙烯由于其高氯含量而难以有效和可持续地回收。现在,研究表明如何在室温下将聚氯乙烯与聚丙烯混合转化为无氯的碳氢化合物。
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引用次数: 0
Room-temperature co-upcycling of polyvinyl chloride and polypropylene 聚氯乙烯和聚丙烯的室温共升级回收
IF 25.7 1区 环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES Pub Date : 2024-11-22 DOI: 10.1038/s41893-024-01468-7
Zhiwen Gao, Yu Wang, Lei Yuan, Xinrui Shi, Yihao Shang, Jingang Jiang, Min Zhang, Shuhui Fang, Wei Zhang, Yue Liu
Co-upcycling of mixed plastics offers a viable approach to reusing carbon resources in plastic wastes and realizing circular economy. However, the presence of polyvinyl chloride (PVC) often complicates the co-upcycling processes, because chlorine (Cl) released from PVC can deactivate catalysts and enter final products. Moreover, existing plastic upcycling processes usually require harsh reaction conditions. Here we present a strategy enabling efficient co-upcycling of PVC and polypropylene (PP) at mild conditions. We use chlorine-resistant ionic liquids butylpyridinium chloride-aluminium chloride to dechlorinate PVC and simultaneously depolymerize the PP–PVC mixture into Cl-free liquid hydrocarbons, with the co-production of hydrogen chloride (HCl) as byproduct. This conversion approach operates at room temperature without the use of external hydrogen or noble metal catalysts. The Cl-free liquid hydrocarbon yield is up to 97.4 wt% of C and H in the feed PP–PVC mixture. This work can incentivize further technical development in plastic upcycling and improve the sustainability of plastic waste management. Upcycling of mixed plastics containing polyvinyl chloride is challenging. This study reports a strategy to co-upcycle polyvinyl chloride with polypropylene to obtain dechlorinated liquid hydrocarbons at high yields at room temperature without the use of external hydrogen or noble metal catalysts.
混合塑料的共同升级回收为塑料废弃物中碳资源的再利用、实现循环经济提供了一条可行的途径。然而,聚氯乙烯(PVC)的存在往往使共同升级回收过程复杂化,因为PVC释放的氯(Cl)会使催化剂失活并进入最终产品。此外,现有的塑料升级回收工艺通常需要苛刻的反应条件。在这里,我们提出了一种策略,使PVC和聚丙烯(PP)在温和的条件下有效的共同升级。我们使用耐氯离子液体氯化丁基吡啶-氯化铝对PVC进行脱氯处理,同时将PP-PVC混合物解聚成无cl的液态烃,副产物氯化氢(HCl)协同生产。这种转化方法在室温下操作,不使用外部氢或贵金属催化剂。在进料PP-PVC混合物中,无cl的液态烃产率可达97.4%。这项工作可以激励塑料升级回收的进一步技术发展,提高塑料废物管理的可持续性。含有聚氯乙烯的混合塑料的升级回收是具有挑战性的。本研究报告了一种在室温下不使用外部氢或贵金属催化剂的情况下,将聚氯乙烯与聚丙烯共循环以高收率获得脱氯液态烃的策略。
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引用次数: 0
Recasting China’s urban wastewater management standards
IF 25.7 1区 环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES Pub Date : 2024-11-22 DOI: 10.1038/s41893-024-01487-4
Wen-Wei Li, Han-Qing Yu
The goal to achieve urban water sustainability is likely to be hindered by current regulations in China. Setting holistic, flexible and ecologically benign pollutant discharge standards can help China’s efforts to shape a more sustainable wastewater management approach.
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引用次数: 0
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Nature Sustainability
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