{"title":"Impacts of global trade on cropland soil-phosphorus depletion and food security","authors":"Kunyu Niu, Mengyu Li, Manfred Lenzen, Thomas Wiedmann, Xudong Han, Shuqin Jin, Arunima Malik, Baojing Gu","doi":"10.1038/s41893-024-01385-9","DOIUrl":"10.1038/s41893-024-01385-9","url":null,"abstract":"Globalization intensifies the demand for agricultural products from specific regions, resulting in intensive farming practices that can exacerbate local cropland soil phosphorus (P) depletion, thereby undermining long-term food security. By integrating global data on international trade and soil-P reserves and deficits from 1970 to 2017, we demonstrate that the contribution of trade to global soil-P deficits increased from 7% in 1970 to 18% in 2017, with 54% of this impact driven by non-food consumption. Over these 48 years, developing regions exported a net of 5.8 Mt P through agricultural trade, resulting in a net increase of 13 Mt soil-P deficits. These deficits are primarily concentrated in regions with low soil-P reserves, such as sub-Saharan Africa, Latin America and Southeast Asia, thereby heightening the risks of soil-P depletion in these areas and amplifying long-term concerns about food security. This insight underscores the imperative for a broader perspective on food security—prioritizing national soil productivity rather than merely boosting the availability of food in the global market when shaping global trade policies. The growing global demand for agricultural products from specific regions leads to farming practices that can exacerbate soil-phosphorus depletion, with consequences for long-term food security. This study quantifies the contribution of trade to global soil-phosphorus deficits from 1970 to 2017.","PeriodicalId":19056,"journal":{"name":"Nature Sustainability","volume":"7 9","pages":"1128-1140"},"PeriodicalIF":25.7,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141673868","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yuanyu Xie, Mi Zhou, Kieran M. R. Hunt, Denise L. Mauzerall
{"title":"Recent PM2.5 air quality improvements in India benefited from meteorological variation","authors":"Yuanyu Xie, Mi Zhou, Kieran M. R. Hunt, Denise L. Mauzerall","doi":"10.1038/s41893-024-01366-y","DOIUrl":"10.1038/s41893-024-01366-y","url":null,"abstract":"Improving air quality amid rapid industrialization and population growth is a huge challenge for India. To tackle this challenge, the Indian government implemented the National Clean Air Programme (NCAP) to reduce ambient concentrations of particulate matter with diameters less than 2.5 μm (PM2.5) and 10 μm (PM10) in hundreds of non-attainment cities that failed to meet the national ambient air quality standards. Here we evaluate the efficacy of the NCAP using data from the national air quality monitoring network combined with regional model simulations. Our results show an 8.8% yr−1 decrease in annual PM2.5 pollution in the six non-attainment cities with continuous air pollution monitoring since 2017. Four of these six cities achieved over 20% reductions in PM2.5 pollution by 2022 relative to 2017, thereby meeting the NCAP target. However, we find that ∼30% of the annual PM2.5 air quality improvements, and approximately half of the reductions during the heavily polluted winter months, can be attributed to favourable meteorological conditions that are unlikely to persist as the climate warms. Meanwhile, in 2022, annual PM2.5 levels in 44 out of 57 non-attainment cities with continuous monitors still failed to meet air quality standards. This work highlights the need for substantial additional mitigation measures beyond current NCAP policies to improve air quality in India. The Indian government implemented the National Clean Air Programme (NCAP) in 2019 to tackle airborne particulate matter pollution. Based on monitoring data and regional model simulations, this study reveals partial achievement of NCAP targets, but highlights the critical need for additional mitigation measures to further improve air quality in India.","PeriodicalId":19056,"journal":{"name":"Nature Sustainability","volume":"7 8","pages":"983-993"},"PeriodicalIF":25.7,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141675554","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Samuel Shephard, Erica von Essen, Thorsten Gieser, Charles J. List, Robert Arlinghaus
{"title":"Recreational killing of wild animals can foster environmental stewardship","authors":"Samuel Shephard, Erica von Essen, Thorsten Gieser, Charles J. List, Robert Arlinghaus","doi":"10.1038/s41893-024-01379-7","DOIUrl":"10.1038/s41893-024-01379-7","url":null,"abstract":"Proposals to downsize the human population or protect large areas of the planet imply that biodiversity conservation is possible only when humans are excluded, but effective conservation action is shown by groups engaged in consumptive wildlife use. We demonstrate that recreational fishing and hunting can develop nature relationships that shape environmental stewardship. Sustainably catching, killing and eating wildlife is identified as a transformative sensory and emotionally charged experience that triggers environmental virtue and conservation. This outlook is less likely for hunting and fishing practices that disconnect users from the catch-and-kill experience or result in only superficial interactions with wildlife. However, excluding recreational wildlife use will probably jeopardize environmental stewardship. Outdoor recreation is an essential component of forming an understanding of nature, and hunting and fishing are no exception. This Perspective looks at how these activities can generate feelings of stewardship towards the environment and wildlife.","PeriodicalId":19056,"journal":{"name":"Nature Sustainability","volume":"7 8","pages":"956-963"},"PeriodicalIF":25.7,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141681694","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Eduardo A. Haddad, Inácio F. Araújo, Rafael Feltran-Barbieri, Fernando S. Perobelli, Ademir Rocha, Karina S. Sass, Carlos A. Nobre
{"title":"Economic drivers of deforestation in the Brazilian Legal Amazon","authors":"Eduardo A. Haddad, Inácio F. Araújo, Rafael Feltran-Barbieri, Fernando S. Perobelli, Ademir Rocha, Karina S. Sass, Carlos A. Nobre","doi":"10.1038/s41893-024-01387-7","DOIUrl":"10.1038/s41893-024-01387-7","url":null,"abstract":"Deforestation in the Brazilian Legal Amazon remains a challenge due to its detrimental effects on ecosystems and the associated increase in greenhouse gas emissions. Such deforestation can be driven by foreign demand in terms of international exports, as well as domestic demand. However, most efforts to quantify the associations between consumer markets and deforestation mainly consider international exports rather than domestic and local sources of demand. Here we show that economic demand originating in the more developed Brazilian centre-south imposes a much stronger pressure on the Amazon’s deforestation than local (within the Amazon) and foreign export demand. Acknowledging domestic markets as a critical driver of changes in forest cover in the region emphasizes the need for increased engagement by national and transnational stakeholders operating in national markets in Brazil. Domestic environmental traceability must be linked to sanitary and fiscal controls at interstate and interregional borders, helping promote transparency in the deforestation intensity of inputs and products originating from the Brazilian Legal Amazon. This would promote sustainability by better informing policymakers about potential future stress regarding the Amazon’s resources under different scenarios of population growth, socio-economic development paths, institutional reforms and technical change. Deforestation, which can have detrimental consequences for native ecosystems and result in increased greenhouse gas emissions, is driven by different sources of economic demand. This study evaluates the role of local and domestic demand driving deforestation in the Brazilian Legal Amazon.","PeriodicalId":19056,"journal":{"name":"Nature Sustainability","volume":"7 9","pages":"1141-1148"},"PeriodicalIF":25.7,"publicationDate":"2024-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142273365","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Rafael M. Almeida, Areefin-Ul-Hassan Chowdhury, Hansapani Rodrigo, Mingxu Li, Rafael J. P. Schmitt
{"title":"Offsetting the greenhouse gas footprint of hydropower with floating solar photovoltaics","authors":"Rafael M. Almeida, Areefin-Ul-Hassan Chowdhury, Hansapani Rodrigo, Mingxu Li, Rafael J. P. Schmitt","doi":"10.1038/s41893-024-01384-w","DOIUrl":"10.1038/s41893-024-01384-w","url":null,"abstract":"Hydropower is typically considered a low-carbon energy source. Yet, because of greenhouse gas (GHG) emissions from their reservoirs, some hydropower facilities exhibit high GHG intensities (that is, emissions per unit of electricity generated). Here we assess the potential for offsetting GHG intensities by combining reservoir-based hydropower with floating solar photovoltaics (FPV), a burgeoning renewable energy technology. We find that technically feasible FPV–hydropower integrations could enable over 50% of the world’s GHG-intensive hydropower plants to achieve low-GHG energy benchmarks. These findings have implications for both project-level hydropower management and broader climate change mitigation strategies. Renewable energy from reservoir-based hydropower plants can have high GHG emissions. Integrating floating solar photovoltaics on hydropower reservoirs can help offset GHG emissions from a large proportion of hydropower facilities.","PeriodicalId":19056,"journal":{"name":"Nature Sustainability","volume":"7 9","pages":"1102-1106"},"PeriodicalIF":25.7,"publicationDate":"2024-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142273329","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Matto Mildenberger, Alexander Sahn, Chris Miljanich, Michelle A. Hummel, Mark Lubell, Jennifer R. Marlon
{"title":"Unintended consequences of using maps to communicate sea-level rise","authors":"Matto Mildenberger, Alexander Sahn, Chris Miljanich, Michelle A. Hummel, Mark Lubell, Jennifer R. Marlon","doi":"10.1038/s41893-024-01380-0","DOIUrl":"10.1038/s41893-024-01380-0","url":null,"abstract":"Sea-level rise caused by climate change poses enormous social and economic costs, yet governments and coastal residents are still not taking the mitigation and adaptation steps necessary to protect their communities and property. In response, advocates have attempted to raise threat salience by disseminating maps of projected sea-level rise. We test the efficacy of this ubiquitous communication tool using two high spatial-resolution survey experiments (n = 1,243). Our first experiment, in US coastal communities across four US states, exposes households on either side of projected sea-level rise boundaries to individually tailored risk maps. We find this common risk communication approach has the unintended consequence of reducing concern about future sea-level rise, even among households projected to experience flooding this century. In a second experiment on our sample (n = 737) of San Francisco Bay Area coastal residents, direct communications about impacts on traffic patterns does increase concern about future climate impacts. Map-based risk information increases support for collective spending on climate adaptation, but it does not increase individual intentions to contribute. Our results demonstrate the importance of empirically testing messaging campaigns for climate adaptation. Getting coastal residents to understand the risk of rising sea levels can be difficult. This study finds that showing individuals top-down maps of future sea-level boundaries can be counterproductive to making residents concerned about climate impacts.","PeriodicalId":19056,"journal":{"name":"Nature Sustainability","volume":"7 8","pages":"1018-1026"},"PeriodicalIF":25.7,"publicationDate":"2024-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142021832","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Messaging risk to drive coastal adaptation","authors":"Tracy Kijewski-Correa","doi":"10.1038/s41893-024-01353-3","DOIUrl":"10.1038/s41893-024-01353-3","url":null,"abstract":"The acute effects of climate change are already manifesting, yet coastal residents have taken little action to mitigate these effects or adapt to them. Understanding how targeted risk communications might influence their risk perceptions is critical to encouraging actions that will protect coastal properties and communities.","PeriodicalId":19056,"journal":{"name":"Nature Sustainability","volume":"7 8","pages":"952-953"},"PeriodicalIF":25.7,"publicationDate":"2024-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142021796","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Best practices for photocatalytic water splitting","authors":"Takashi Hisatomi, Kazunari Domen","doi":"10.1038/s41893-024-01382-y","DOIUrl":"10.1038/s41893-024-01382-y","url":null,"abstract":"Photocatalytic water splitting could be used to sustainably produce hydrogen. To assess its performance, solar-to-hydrogen energy conversion efficiency is the most important metric. Here, we discuss the common problems in reporting this metric and propose the use of water displacement to accurately measure the solar-to-hydrogen efficiency.","PeriodicalId":19056,"journal":{"name":"Nature Sustainability","volume":"7 9","pages":"1082-1084"},"PeriodicalIF":25.7,"publicationDate":"2024-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142273353","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jichong Han, Zhao Zhang, Jialu Xu, Yi Chen, Jonas Jägermeyr, Juan Cao, Yuchuan Luo, Fei Cheng, Huimin Zhuang, Huaqing Wu, Qinghang Mei, Jie Song, Fulu Tao
{"title":"Threat of low-frequency high-intensity floods to global cropland and crop yields","authors":"Jichong Han, Zhao Zhang, Jialu Xu, Yi Chen, Jonas Jägermeyr, Juan Cao, Yuchuan Luo, Fei Cheng, Huimin Zhuang, Huaqing Wu, Qinghang Mei, Jie Song, Fulu Tao","doi":"10.1038/s41893-024-01375-x","DOIUrl":"10.1038/s41893-024-01375-x","url":null,"abstract":"Flood hazards pose a significant threat to agricultural production. Agricultural adaptations tend to be prevalent and systematic in high-frequency flood (HFF) areas but neglected in low-frequency flood (LFF) areas. Here, using satellite imagery, we map global spatial distributions of LFF and HFF at 250 m resolution for 3,427 flood events between 2000 and 2021. We show that LFF affected a larger proportion of cropland area (4.7%) than HFF (1.2%), and HFF occurred in smaller regions with less intensity. Cropland expansion between 2000 and 2019 increased the area affected by LFF (3.1 × 104 km2) more than that affected by HFF (1.3 × 104 km2). Moreover, the mean yield losses of wheat and rice from LFF were greater than those from HFF, owing to the higher precipitation anomalies, soil moisture anomalies and greater crop flooding during their growing seasons. Our findings highlight the urgency of this issue and identify priority areas to prevent these neglected low-frequency but high-impact floods, providing valuable information for developing flood-adapted policy. Mitigation efforts to protect agricultural productivity against flooding focus on areas with high-frequency floods. However, agricultural regions with low-frequency floods experience a larger proportion of flood impacts, highlighting the urgency of prioritizing mitigation efforts in these regions.","PeriodicalId":19056,"journal":{"name":"Nature Sustainability","volume":"7 8","pages":"994-1006"},"PeriodicalIF":25.7,"publicationDate":"2024-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142021834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Leonie Hodel, Yann le Polain de Waroux, Rachael D. Garrett
{"title":"Characterizing culture’s influence in land systems","authors":"Leonie Hodel, Yann le Polain de Waroux, Rachael D. Garrett","doi":"10.1038/s41893-024-01381-z","DOIUrl":"10.1038/s41893-024-01381-z","url":null,"abstract":"Group-shared attributes, coded in cultural systems, heavily influence how land is used. Despite recent advances in behavioural theory, the central role of culture in land-use decision-making and linked sustainability outcomes is underexplored. We expanded on institutional analysis and system-dynamics frameworks to analyse 66 studies that causally link culture to land use. We found that most studies focus on norms, practices, values or meanings. These can lead actors to maintain a particular land use, which is coded into cultural systems, adding to the land system’s resilience. Internal group events or changes in structural factors can also lead to shifting norms and values, changing land use or destabilizing systems, leading to new system dynamics or resistance to new feedbacks. Our findings further link cultural underpinnings of land systems to positive and negative sustainability outcomes. We call for further research on the role of culture in land-system dynamics. While land use is often seen as a function of governance and economics, the role of culture is largely understudied. This study examines the cultural dynamics that play a role in a wide range of land-use outcomes globally","PeriodicalId":19056,"journal":{"name":"Nature Sustainability","volume":"7 8","pages":"973-982"},"PeriodicalIF":25.7,"publicationDate":"2024-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41893-024-01381-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142021829","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}