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Can the Resource Nexus guide improvements in urban planetary health? Insights from a literature review 资源联系能否指导城市地球健康的改善?来自文献综述的见解
IF 12.4 Q1 ENVIRONMENTAL SCIENCES Pub Date : 2025-04-10 DOI: 10.1016/j.resenv.2025.100224
Rayyan Sulieman , Martina Artmann , Daniel Karthe , Martin Behnisch
Since 2007, cities have accommodated more than half of the global population. Their growth has led to significant environmental modifications and at least some degradation of the natural environment, with significant consumption of imported resources, waste generation and pollutant emissions. This on the one hand leads to a special importance of cities for planetary health, and on the other hand underlines the necessity of integrated approaches in environmental resources management for improving urban planetary health. However, the role of integrative approaches, such as the Resource Nexus, in urban planetary health remains insufficiently explored. This study addresses this gap by conducting a semi-systematic literature review, following the PRISMA guidelines to select and document the current state of knowledge on urban planetary health and the role of the Resource Nexus approach for sustainability transformations in this context. Based on 57 papers, a qualitative text analysis was conducted through the lens of the Resource Nexus framework. It was found that all key environmental resources are covered regarding their role for urban planetary health, with climate, food, biota, land, and water identified as the most critical elements for enhancing planetary health. Moreover, the analysed literature shows that despite the many challenges, urban areas offer a multitude of opportunities for societal, political, and economic interventions that can benefit environmental and human health. Maximizing synergies and minimizing trade-offs requires addressing both challenges and opportunities. This often involves making multiple changes at both the urban societal and governance levels. These changes create a systemic shift, moving away from prioritizing economic prosperity and towards a focus on planetary health.
自2007年以来,城市容纳了全球一半以上的人口。它们的增长导致了重大的环境变化,至少在一定程度上使自然环境退化,大量消耗进口资源,产生废物和排放污染物。这一方面使城市对地球健康具有特别的重要性,另一方面强调了在环境资源管理方面采取综合办法以改善城市地球健康的必要性。然而,诸如资源联系等综合办法在城市地球健康方面的作用仍未得到充分探索。本研究通过进行半系统的文献综述来解决这一差距,遵循PRISMA指南,选择和记录关于城市地球健康的知识现状以及资源联系方法在这一背景下对可持续性转型的作用。以57篇论文为基础,通过资源关联框架进行定性文本分析。研究发现,所有关键的环境资源都涉及到它们对城市地球健康的作用,其中气候、食物、生物群、土地和水被确定为增强地球健康的最关键因素。此外,经分析的文献表明,尽管存在许多挑战,但城市地区为有利于环境和人类健康的社会、政治和经济干预提供了大量机会。最大化协同效应和最小化权衡需要同时应对挑战和机遇。这通常涉及在城市、社会和治理层面进行多重变革。这些变化造成了系统性的转变,从优先考虑经济繁荣转向关注地球健康。
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引用次数: 0
Food trade of China saved global land but increased water appropriation and carbon emissions from 2010 to 2020 2010 - 2020年,中国粮食贸易在节约全球土地的同时,增加了水资源占用和碳排放
IF 12.4 Q1 ENVIRONMENTAL SCIENCES Pub Date : 2025-04-08 DOI: 10.1016/j.resenv.2025.100222
Meng Li , Huijun Wu , Hongrong Huang , Jie Gao , Pute Wu , La Zhuo
Global food trade has been growing and diverse with environmental burden shifting across the trade bilateral partners. However, the temporal evolution of the environmental impacts and resources degradations embedded in food trade remains unclear for the recent decades. This study analyzes China’s food supply and trade relationships of 71 food items with 174 countries and territories from 2010 to 2020, examining the associated water, land, carbon footprint (WF, LF and CF) based on the bottom-up method, as well as the corresponding virtual water, land, carbon flows and resources saving. Results show that WF and LF of Chinese food consumption increased while CF decreased over the period. National net virtual water, land and carbon imports more than doubled, mainly due to the import of legumes and nuts from Latin America. Trade conserved 56.6 Mha/yr of land but consumed 30 Gm3/yr of water and raised net carbon emissions by 56 Mt/yr in 2020. This analysis shows a crucial view on the non-negligible role of a certain country’s food trade network changes on global environmental degradations though worldwide food productivity improvements.
随着环境负担在贸易双边伙伴之间的转移,全球食品贸易一直在增长和多样化。然而,近几十年来,食品贸易中环境影响和资源退化的时间演变仍不清楚。本研究分析了2010 - 2020年中国与174个国家和地区的71种食品供应和贸易关系,基于自下而上的方法考察了相关的水、土地、碳足迹(WF、LF和CF),以及相应的虚拟水、土地、碳流和资源节约。结果表明,中国食品消费的WF和LF呈上升趋势,CF呈下降趋势。国家净虚拟水、土地和碳进口量增加了一倍以上,主要是由于从拉丁美洲进口豆类和坚果。贸易节约了56.6万公顷/年的土地,但消耗了30亿立方米/年的水,并在2020年将净碳排放量提高了5600万吨/年。这一分析显示了一个至关重要的观点,即一个国家的粮食贸易网络的变化对全球环境退化的不可忽视的作用,尽管世界范围内的粮食生产力的提高。
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引用次数: 0
Assessing carbon storage dynamics in an ecological civilization demonstration zone amid rapid urbanization: A multi-scenario study of Guizhou Province, China 快速城市化背景下生态文明示范区碳储量动态评估——以贵州省为例
IF 12.4 Q1 ENVIRONMENTAL SCIENCES Pub Date : 2025-04-08 DOI: 10.1016/j.resenv.2025.100223
Rui Chen , Xuehai Fei , Jingyu Zhu , Weiduo Chen , Haiqiang Du , Yingqian Huang , Yi Shen , Yong Zhang , Aping Niu , Peng Xu
Effective management of terrestrial ecosystems is crucial for mitigating climate change, especially in regions like Guizhou Province, where significant carbon sequestration potential is challenged by urbanization and ecological initiatives. This study simulates the spatiotemporal dynamics of carbon storage in Guizhou under multiple land use and land cover (LULC) scenarios and explores their ecological and economic impacts. Specifically, LULC and ecosystem service data were applied to assess carbon storage and habitat quality from 1990 to 2020. LULC projections from 2030 to 2060, incorporating habitat quality constraints, were generated to assess carbon storage and its economic value. The results show that Guizhou’s carbon storage increased from 3423.13 Tg to 3475.42 Tg, with forest restoration increasing it by 301.62 Tg and agricultural expansion reducing it by 218.63 Tg. Projections indicate continued growth under the current trend, with 125.19 Tg of carbon sequestration valued at 11.29 billion Chinese Yuan by 2060. Ecological initiatives could accelerate these benefits, while urban expansion may limit them. Carbon storage in different sequences of development scenarios was similar, suggesting that later development strategies can partially offset earlier differences resulting from varying priorities. Nevertheless, it remains essential to consider the sequence effects on other ecosystem services and socioeconomic factors. These findings highlight the importance of ecological engineering and reveal the flexibility in balancing ecological goals with urban development, providing guidance for long-term integrated planning to achieve sustainable development. This study provides a methodological basis for carbon storage research, supporting regional land management practices in the context of carbon neutrality.
陆地生态系统的有效管理对于减缓气候变化至关重要,特别是在像贵州省这样的地区,在那里,巨大的碳封存潜力受到城市化和生态举措的挑战。本文模拟了贵州省多种土地利用/土地覆盖情景下碳储量的时空动态变化,并探讨了不同土地利用/土地覆盖情景对生态和经济的影响。具体而言,利用1990 - 2020年LULC和生态系统服务数据对碳储量和栖息地质量进行了评估。在纳入栖息地质量约束的情况下,生成了2030年至2060年的LULC预测,以评估碳储量及其经济价值。结果表明:贵州省碳储量从3423.13 Tg增加到3475.42 Tg,其中森林恢复增加了301.62 Tg,农业扩张减少了218.63 Tg;预测显示,在目前的趋势下,碳汇将继续增长,到2060年,碳汇将达到125.19 Tg,价值112.9亿元人民币。生态倡议可以加速这些好处,而城市扩张可能会限制它们。不同发展情景序列的碳储量相似,这表明后来的发展战略可以部分抵消由于优先顺序不同而导致的早期差异。然而,仍有必要考虑序列对其他生态系统服务和社会经济因素的影响。这些发现突出了生态工程的重要性,揭示了平衡生态目标与城市发展的灵活性,为实现可持续发展的长期综合规划提供了指导。本研究为碳储量研究提供了方法论基础,为碳中和背景下的区域土地管理实践提供了支持。
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引用次数: 0
Scale-dependent effects of tree species diversity on soil erosion resistance 树种多样性对土壤侵蚀抗性的尺度依赖效应
IF 12.4 Q1 ENVIRONMENTAL SCIENCES Pub Date : 2025-04-07 DOI: 10.1016/j.resenv.2025.100221
Huaqing Liu, Xiaodong Gao, Xining Zhao
Globally, vegetation establishment is an important approach for controlling soil erosion, which induces land degradation. However, the understanding of the effects of tree species diversity on soil erodibility across spatial scales remains incomplete. This study employed the Universal Soil Loss Equation model to quantify soil erodibility and aligned it with tree species diversity data obtained from the Global Forest Biodiversity Initiative database. Our findings revealed a global decrease in soil erodibility with increases in tree species diversity, though this relationship varies among biomes and ecoregions. Specifically, soil erodibility decreased with increasing tree species diversity in 6 of the 11 biomes and 54.90% of the ecoregions analyzed. Comprehensive analyses revealed that increased productivity, NDVI, and basal area mediated this reduction in erodibility across both groups. In ecoregions where tree species diversity was negatively correlated with soil erodibility, lower precipitation during the driest month and quarter, higher precipitation seasonality, lower silt content, and higher elevation were observed compared with those of the ecoregions with positive correlations between tree species diversity and soil erodibility. Among ecoregions characterized by clay content > 18.3% and silt content < 40%, 79.55% exhibited a reduction in soil erodibility as tree species diversity increased. These findings highlight the inherent spatial variability and mechanistic complexity of biodiversity-soil erodibility relationships, underscoring the need for targeted, soil-specific restoration strategies.
在全球范围内,植被建设是控制土壤侵蚀的重要途径。然而,树种多样性对土壤可蚀性的影响在空间尺度上的认识仍然不完整。本研究采用通用土壤流失方程模型量化土壤可蚀性,并将其与全球森林生物多样性倡议数据库中获得的树种多样性数据进行比对。我们的研究结果表明,全球土壤可蚀性随着树种多样性的增加而降低,尽管这种关系在生物群系和生态区之间有所不同。在11个生物群系中,有6个群落和54.90%的生态区,土壤可蚀性随树种多样性的增加而降低。综合分析显示,生产力、NDVI和基础面积的增加介导了两组可蚀性的降低。在树木多样性与土壤可蚀性呈负相关的生态区,与树木多样性与土壤可蚀性呈正相关的生态区相比,树木多样性与土壤可蚀性呈负相关的生态区在最干旱月份和季度降水较少、降水季节性较强、粉砂含量较低、海拔较高。在以粘土含量为特征的生态区域中18.3%,含粉量<;随着树种多样性的增加,土壤可蚀性降低的比例分别为40%和79.55%。这些发现强调了生物多样性-土壤可蚀性关系固有的空间变异性和机制复杂性,强调了有针对性的土壤修复策略的必要性。
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引用次数: 0
Graph-based machine learning for high-resolution assessment of pedestrian-weighted exposure to air pollution 基于图形的机器学习,用于行人加权空气污染暴露的高分辨率评估
IF 12.4 Q1 ENVIRONMENTAL SCIENCES Pub Date : 2025-04-01 DOI: 10.1016/j.resenv.2025.100219
Feifeng Jiang , Jun Ma
Pedestrians are particularly vulnerable to air pollution due to their proximity to pollutant sources and elevated respiratory rates during physical activity, amplifying cumulative health risks. However, existing studies focus on concentration- or residence-based exposure assessment, overlooking the dynamic interaction between pollution patterns and pedestrian activity. This study therefore introduces a novel methodological framework to assess pedestrian-specific exposure to PM2.5 in diverse urban environments. Applied to New York City, the framework leverages graph-based machine learning to predict street-level PM2.5 concentrations from vehicle-sensed pollution data, while estimating high-resolution pedestrian volume derived from street view imagery and ground-truth count data. The results reveal significant divergences between traditional exposure assessments and pedestrian-specific exposure patterns, uncovering previously overlooked high-risk zones. High-exposure hotspots are not limited to areas with elevated pollution levels but also include locations where moderate pollution coincides with high pedestrian activity. This study also explores the spatial relationship between exposure patterns and urban vegetation coverage, providing actionable insights for targeted interventions. By bridging the gap between pollution dynamics and pedestrian activity, this research provides urban planners and policymakers with new insights for developing pedestrian-centered air quality management strategies, contributing to healthier and more sustainable urban environments.
行人特别容易受到空气污染的影响,因为他们靠近污染源,而且在身体活动期间呼吸频率升高,从而加大了累积的健康风险。然而,现有的研究侧重于以浓度或居住地为基础的暴露评估,忽视了污染模式与行人活动之间的动态相互作用。因此,本研究引入了一种新的方法框架来评估不同城市环境中行人对PM2.5的特定暴露。该框架应用于纽约市,利用基于图形的机器学习,从车辆感知的污染数据中预测街道PM2.5浓度,同时从街景图像和地面真实计数数据中估计高分辨率行人量。结果揭示了传统暴露评估和行人特定暴露模式之间的显著差异,揭示了以前被忽视的高风险区域。高暴露热点不仅限于污染水平高的地区,还包括中度污染与行人活动频繁的地区。本研究还探讨了暴露模式与城市植被覆盖之间的空间关系,为有针对性的干预措施提供了可操作的见解。通过弥合污染动态和行人活动之间的差距,本研究为城市规划者和决策者提供了新的见解,以制定以行人为中心的空气质量管理策略,为更健康、更可持续的城市环境做出贡献。
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引用次数: 0
How does the long-term return of mix-sowing green manures increase nitrogen utilization and decrease ecological costs of wheatland under reduced chemical nitrogen input? 在化学氮投入减少的情况下,混播绿肥的长期回报是如何提高小麦地氮素利用率和降低生态成本的?
IF 12.4 Q1 ENVIRONMENTAL SCIENCES Pub Date : 2025-03-30 DOI: 10.1016/j.resenv.2025.100220
Jingui Wei, Wen Yin, Qiang Chai, Zhilong Fan, Falong Hu, Lianhao Zhao
Increasing nitrogen (N) utilization and reducing ecological costs of farmland are key objectives for mitigating environmental pollution and advancing sustainable agricultural development. Green manure is widely used to increase crop N efficiency while replacing partial chemical N input. However, it remains uncertain whether reducing chemical N supply, combined with mix-sowing green manures, could increase N utilization and reduce ecological costs of wheatland, revealing its mechanisms of soil N regulation and bacteria diversity. A 6-year field experiment was conducted in an arid irrigation area of northwestern China, implementing wheat multi-cropping different green manures and mix-sowing green manures (F, fallow; CV, common vetch; R, rapeseed; HCV, hairy vetch and common vetch) under reduced chemical N (N3, conventional N application rate; N2, reduced N by 20%; N1, reduced N by 40%). Our results showed that reducing chemical N decreased wheat yield and N efficiency, while green manure return increased wheat yield and N efficiency. Under N2, HCV had a higher wheat yield and N efficiency than CV, R, and F. Wheat N uptake and active N loss were decreased with chemical N reduction but enhanced with green manure return. HCVN2 improved wheat N uptake by 8.3% while reducing ammonia volatilization, nitrous oxide emissions, and nitrate leaching by 12.5%, 17.2%, and 22.1%, respectively, compared to FN3. The mechanisms of HCVN2 enhanced N utilization and reduced ecological costs of wheatland, mainly including increased N contents in the 0–40 cm soil layer, improved soil enzyme activities of N metabolism, and enriched soil bacterial diversity. Therefore, mix-sowing green manures return enhanced N utilization and decreased ecological costs of wheatland under a 20% reduction in chemical N input.
提高农田氮素利用率,降低农田生态成本,是缓解环境污染、促进农业可持续发展的关键目标。绿肥被广泛用于提高作物氮效率,同时替代部分化学氮输入。然而,减少化学施氮与混播绿肥是否能提高小麦地氮素利用率,降低生态成本,揭示其对土壤氮素调控和细菌多样性的机制尚不明确。在西北干旱灌区进行了为期6年的大田试验,采用小麦复种不同绿肥和混播绿肥(F、休耕;CV,普通紫薇;R,油菜籽;还原性化学N (N3,常规施氮量)条件下HCV、毛叶黄鼠和普通叶黄鼠;N2,使N降低20%;N1, N降低40%)。结果表明,化学施氮降低了小麦产量和氮素效率,而绿肥还田提高了小麦产量和氮素效率。氮肥处理下,HCV比CV、R和f具有更高的小麦产量和氮素效率,化学降氮降低了小麦氮素吸收和活性氮素损失,绿肥还田提高了氮素吸收和活性氮素损失。与FN3相比,HCVN2使小麦氮素吸收提高了8.3%,同时使氨挥发、一氧化二氮排放和硝酸盐淋溶分别降低了12.5%、17.2%和22.1%。HCVN2提高小麦地氮素利用和降低生态成本的机制主要包括提高0 ~ 40 cm土层氮素含量、提高土壤氮素代谢酶活性和丰富土壤细菌多样性。因此,在化学施氮量减少20%的情况下,混播绿肥能提高小麦地氮素利用率,降低生态成本。
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引用次数: 0
Enhancement joint fertilization efficacy of straw and nitrogen fertilizer on soil quality and seedcotton yield for sustainable cotton farming 提高秸秆与氮肥联合施肥对土壤质量和籽棉产量的影响,实现棉花可持续种植
IF 12.4 Q1 ENVIRONMENTAL SCIENCES Pub Date : 2025-03-30 DOI: 10.1016/j.resenv.2025.100218
Qiang Li , Zhitao Liu , Li’an Wang, Ying Zhang, Mengyao Guo, Wen Jin, Wei Hu, Yali Meng, Haishui Yang, Zhiguo Zhou
Straw return with optimizing nitrogen fertilizer is an important way to achieve sustainable cotton farming. However, quantitative analysis of joint fertilization efficacy (JFE) of straw return and nitrogen fertilizer on soil quality and seedcotton yield remains uncertain. Herein, based on a 7-year field experiment, we evaluated the dynamic characteristics of JFE of straw return and nitrogen rates (75, 150 and 300 kg N ha−1, denote as N75, N150 and N300, respectively) on soil quality index (JFE-SQI) and seedcotton yield (JFE-Y) in a cotton–wheat​ cropping system of East China. The results showed that straw return with moderate nitrogen rate (i.e.N150) improved soil quality by reducing bulk density, increasing soil carbon and nitrogen sequestration, promoting nutrient availability, stimulating microbial growth and enhancing soil enzyme activities, thereby improving seedcotton yield and its stability. Straw return with N150 could also achieve higher JFE-SQI and JFE-Y synergistically. Meanwhile, JFE-SQI and JFE-Y at N150 had a synergistic effect (JFE > 10%) in the first 5 year while a summing effect (−10% JFE 10%) from the sixth year. And the highest JFE-Y could be reached when moderate JFE-SQI was achieved, indicating that there was a nitrogen-driven tradeoff between JFE-SQI and JFE-Y. Moreover, Climatic factor exerted a significant contribution to seedcotton yield and JFE-Y. In conclusion, reasonable straw return and nitrogen fertilizer management strategy is an effective way to realize sustainable cotton planting under the global climate change.
秸秆还田配氮肥优化是实现棉花可持续生产的重要途径。然而,秸秆还田与氮肥联合施肥对土壤质量和籽棉产量的定量分析仍不确定。基于7年的大田试验,研究了秸秆还田和施氮量(分别为75、150和300 kg N ha−1,分别为N75、N150和N300)对华东棉麦种植体系土壤质量指数(JFE- sqi)和籽棉产量(JFE- y)的动态特征。结果表明,中等施氮量(即n150)秸秆还田可通过降低容重、增加土壤固碳和固氮、促进养分有效性、刺激微生物生长和提高土壤酶活性等方式改善土壤质量,从而提高棉籽产量及其稳定性。秸秆还田N150也能协同提高JFE-SQI和JFE-Y。同时,N150时JFE- sqi和JFE- y具有协同效应(JFE >;前5年为10%),第6年为累加效应(- 10%≤JFE≤10%)。当JFE-SQI适中时,JFE-Y最高,说明JFE-SQI和JFE-Y之间存在氮驱动的权衡。此外,气候因子对籽棉产量和JFE-Y均有显著影响。综上所述,合理的秸秆还田和氮肥管理策略是在全球气候变化下实现棉花可持续种植的有效途径。
{"title":"Enhancement joint fertilization efficacy of straw and nitrogen fertilizer on soil quality and seedcotton yield for sustainable cotton farming","authors":"Qiang Li ,&nbsp;Zhitao Liu ,&nbsp;Li’an Wang,&nbsp;Ying Zhang,&nbsp;Mengyao Guo,&nbsp;Wen Jin,&nbsp;Wei Hu,&nbsp;Yali Meng,&nbsp;Haishui Yang,&nbsp;Zhiguo Zhou","doi":"10.1016/j.resenv.2025.100218","DOIUrl":"10.1016/j.resenv.2025.100218","url":null,"abstract":"<div><div>Straw return with optimizing nitrogen fertilizer is an important way to achieve sustainable cotton farming. However, quantitative analysis of joint fertilization efficacy (JFE) of straw return and nitrogen fertilizer on soil quality and seedcotton yield remains uncertain. Herein, based on a 7-year field experiment, we evaluated the dynamic characteristics of JFE of straw return and nitrogen rates (75, 150 and 300 kg N ha<sup>−1</sup>, denote as N75, N150 and N300, respectively) on soil quality index (JFE-SQI) and seedcotton yield (JFE-Y) in a cotton–wheat​ cropping system of East China. The results showed that straw return with moderate nitrogen rate (i.e.N150) improved soil quality by reducing bulk density, increasing soil carbon and nitrogen sequestration, promoting nutrient availability, stimulating microbial growth and enhancing soil enzyme activities, thereby improving seedcotton yield and its stability. Straw return with N150 could also achieve higher JFE-SQI and JFE-Y synergistically. Meanwhile, JFE-SQI and JFE-Y at N150 had a synergistic effect (JFE &gt; 10%) in the first 5 year while a summing effect (−10% <span><math><mo>≤</mo></math></span> JFE <span><math><mo>≤</mo></math></span> 10%) from the sixth year. And the highest JFE-Y could be reached when moderate JFE-SQI was achieved, indicating that there was a nitrogen-driven tradeoff between JFE-SQI and JFE-Y. Moreover, Climatic factor exerted a significant contribution to seedcotton yield and JFE-Y. In conclusion, reasonable straw return and nitrogen fertilizer management strategy is an effective way to realize sustainable cotton planting under the global climate change.</div></div>","PeriodicalId":34479,"journal":{"name":"Resources Environment and Sustainability","volume":"20 ","pages":"Article 100218"},"PeriodicalIF":12.4,"publicationDate":"2025-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143791349","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Combatting environmental impacts and microbiological pollution risks in Potato cropping: Benefits of forage cultivation in a semi-arid region 应对马铃薯种植的环境影响和微生物污染风险:半干旱地区牧草种植的效益
IF 12.4 Q1 ENVIRONMENTAL SCIENCES Pub Date : 2025-03-18 DOI: 10.1016/j.resenv.2025.100216
Xudong Sun , Yousif Abdelrahman Yousif Abdellah , Guangyan Wang , Huasen Wang , Jishao Jiang , Yu Zhang , Caspar C.C. Chater , Yongping Yang , Yuanwen Duan , Fuqiang Yu , Dong Liu
Continuous potato cropping in semi-arid regions, which are vulnerable to erosion, reduces tuber yields and leads to a decline in soil quality. This research delves into the impact of forage cultivation on soil bacterial and archaeal communities and the associated hazard-related virulence genes and antibiotic resistance genes (ARGs) within potato cropping systems. The study reveals that distinct crop rotation schemes significantly alter soil physicochemical properties. Compared to non-potato cultivation, continuous potato cropping substantially reduces soil organic carbon from 31.9 g kg 1 to 15.7 g kg 1 and total nitrogen from 3.7 g kg 1 to 1.6 g kg 1, indicating a notable deterioration in soil fertility. Among the ten identified phyla, Proteobacteria demonstrates the highest relative abundance, from 34.6% to 38.4%, closely followed by Actinobacteria, ranging from 20.5% to 36.0%. These two phyla likely play a crucial role in maintaining soil health. Moreover, continuous potato cultivation (CPC) results in more specific ARGs than non-potato cultivation (NPC). This phenomenon implies that CPC may select for particular resistance traits within the soil microbiome, potentially due to changes in the composition of the soil microbiota. Forage crops (oats or a mixture of oats and peas) exhibit varying effects on ARGs at different growth stages. The differences observed between the flowering and maturity stages of oats suggest that plant growth and the composition of root exudates can influence microbial communities and the prevalence of ARGs. The Mantel test further indicates that specific soil properties impact the abundance of certain microbial taxa and determine the expression of key functional genes, including those associated with antibiotic resistance. These findings underscore the intricate interactions among microbial communities, genes, and soil health, providing essential guidance for formulating agricultural practices to manage soil health and mitigating problems such as antibiotic resistance in continuously cropped soils.
Importantly, this study highlights the significant benefits of crop diversification, primarily through the incorporation of forage crops, in safeguarding soil health and maintaining microbial diversity within potato cropping systems. The results offer valuable perspectives for developing sustainable agricultural strategies, which can enhance soil fertility and promote ecosystem stability in semi-arid regions.
在易受侵蚀的半干旱地区,连续种植马铃薯会减少块茎产量,并导致土壤质量下降。本研究探讨了牧草栽培对马铃薯种植系统中土壤细菌和古细菌群落的影响以及相关的危害相关毒力基因和抗生素抗性基因(ARGs)。研究表明,不同的作物轮作方案显著改变了土壤的理化性质。与不种植马铃薯相比,连作马铃薯使土壤有机碳从31.9 g kg - 1减少到15.7 g kg - 1,全氮从3.7 g kg - 1减少到1.6 g kg - 1,土壤肥力明显下降。在10个门中,变形菌门的相对丰度最高,为34.6% ~ 38.4%,放线菌门次之,为20.5% ~ 36.0%。这两个门可能在维持土壤健康方面起着至关重要的作用。此外,连续马铃薯栽培(CPC)比非马铃薯栽培(NPC)产生更特异的ARGs。这一现象表明,CPC可能会在土壤微生物群中选择特定的抗性性状,这可能是由于土壤微生物群组成的变化。饲料作物(燕麦或燕麦和豌豆的混合物)在不同生长阶段对ARGs的影响不同。燕麦开花期和成熟期的差异表明,植物生长和根系分泌物的组成可以影响微生物群落和ARGs的流行。Mantel试验进一步表明,特定的土壤性质影响某些微生物类群的丰度,并决定关键功能基因的表达,包括那些与抗生素耐药性相关的基因。这些发现强调了微生物群落、基因和土壤健康之间复杂的相互作用,为制定农业实践以管理土壤健康和减轻连作土壤中的抗生素耐药性等问题提供了重要指导。重要的是,本研究强调了作物多样化的显著益处,主要是通过纳入饲料作物,在马铃薯种植系统中保护土壤健康和维持微生物多样性。研究结果为制定可持续农业战略提供了有价值的视角,可提高半干旱区土壤肥力,促进生态系统稳定。
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引用次数: 0
Co-control of multi-pollutants and CO2 based on extended life cycle assessment in electrolytic manganese industry 基于延长生命周期评价的电解锰工业多污染物与CO2协同控制
IF 12.4 Q1 ENVIRONMENTAL SCIENCES Pub Date : 2025-03-18 DOI: 10.1016/j.resenv.2025.100217
Ruichen Wang , Zhe Bai , Dandan Liu , Jingyang Liu , Zhiguo Yuan , Chunge Dang , Feilong Zhang
The electrolytic manganese metal (EMM) industry has long been restricted because of associated heavy pollution and high CO2 emissions. In this study, an extended life cycle assessment (LCA) was conducted on the entire process of EMM production and an integrative decision-making framework was developed for the co-abatement of multiple pollutants and CO2, including emissions accounting, program design, and co-abatement economic benefits assessment. In the extended LCA that additionally considers the electric power supply and manganese residue treatment, the CO2 emissions from EMM production increased by 173% and the equivalent pollutant loads decreased by 85%. A technical guideline consisting of 16 co-control measures was formulated based on capacity adjustment, energy structure optimization, production management, and technical equipment upgrading. After eliminating the overlapping abatement effects among measures, this scheme achieved a cumulative abatement potential of 35.3% for CO2 and 96.3% for the equivalent pollutants. The co-econij ranking results show that technologies based on the concepts of source reduction and resource recycling are more environmentally friendly and cost-efficient. Sensitivity analysis proved that the results were robust. This study enriches the theory of co-control of emissions and provides an efficient and credible methodology and practical reference for policymakers and industrial enterprises.
电解金属锰(EMM)行业长期以来因污染严重和二氧化碳排放高而受到限制。本研究对EMM生产全过程进行了延长生命周期评价(LCA),构建了多种污染物与CO2协同减排的综合决策框架,包括排放核算、方案设计和协同减排经济效益评价。在考虑电力供应和锰渣处理的扩展LCA中,EMM生产的CO2排放量增加了173%,等效污染物负荷减少了85%。制定了产能调整、能源结构优化、生产管理和技术装备改造等16项协同控制措施的技术指导意见。在消除措施间的重叠减排效应后,该方案对CO2的累计减排潜力为35.3%,对当量污染物的累计减排潜力为96.3%。协同经济排名结果表明,基于源减量和资源循环理念的技术更环保,成本效益更高。敏感性分析证明了结果的稳健性。本研究丰富了排放协同控制理论,为政策制定者和工业企业提供了高效可信的方法和实践参考。
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引用次数: 0
Global supply chain restructuring towards achieving a low-carbon procurement of mineral resources for metal production 全球供应链重组,实现金属生产矿产资源的低碳采购
IF 12.4 Q1 ENVIRONMENTAL SCIENCES Pub Date : 2025-03-15 DOI: 10.1016/j.resenv.2025.100215
Keitaro Maeno , Shohei Tokito , Ryosuke Yokoi , Shigemi Kagawa
To reduce embodied CO2 emissions in producing metals for which rapid demand growth is expected due to their critical role in decarbonization, it is essential for metal industries worldwide to establish a low-carbon procurement structure of mineral resources as raw materials for their production activities. This study explored the CO2 reduction potential by shifting the sourcing partners of mineral resources for metal production towards a low-carbon procurement structure, considering the structural changes in global supply chains (GSCs) (i.e., GSC restructuring) triggered by these shifts. In this process, we applied a multi-regional input output framework in an extended way to model the GSC restructuring based on physical transactions of mineral resources internationally traded in GSCs. From the results focusing on the restructuring of GSCs of the Japanese industries towards the low-carbon procurement of iron and copper ores revealed a CO2 reduction potential of the GSC restructuring by approximately -40% of CO2 emissions embodied in the production of both relevant mineral resources induced in the GSCs. Furthermore, by comparing the restructuring in GSCs of the Japanese, German, USA, and Chinese industries, we highlighted differences in the significance of the CO2 reduction potential of GSC restructuring in each GSC. Finally, we demonstrated the GSC restructuring formulated in this study has a large contribution to reducing scope3-CO2 emissions of metal production in the relevant GSCs, and provided effective policy suggestions for governments in countries that rely on outsourcing for mineral resources based on our findings.
由于金属在脱碳中的关键作用,预计金属的需求将迅速增长,为了减少金属生产过程中的隐含二氧化碳排放,世界各地的金属工业必须建立一种低碳采购结构,将矿产资源作为其生产活动的原材料。考虑到全球供应链(GSC)的结构变化(即GSC重组),本研究探讨了通过将金属生产矿产资源的采购伙伴转向低碳采购结构来减少二氧化碳的潜力。在此过程中,我们以扩展的方式应用了一个多区域投入产出框架,以GSC国际贸易中矿产资源的实物交易为基础,对GSC重组进行了建模。从聚焦于日本产业GSC向低碳采购铁矿石和铜矿转型的结果来看,GSC重组的二氧化碳减排潜力约为GSC中相关矿产资源生产中二氧化碳排放量的-40%。此外,通过比较日本、德国、美国和中国的GSC结构调整,我们突出了各GSC结构调整的CO2减排潜力的显著性差异。最后,我们论证了本文制定的GSC结构调整对减少相关GSC金属生产的范围3- co2排放有很大的贡献,并基于我们的研究结果为依赖矿产资源外包的国家的政府提供了有效的政策建议。
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Resources Environment and Sustainability
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