环境•农林最新文献

{"title":"Integrated transcriptomic and metabolomic analyses to decipher the regulatory mechanisms of polystyrene nanoplastic-induced metabolic disorders in hepatocytes","authors":"Yuting Fang, Yukang Zhang, Tingting Wei, Huraira Akhtar, Yuqing Song, Yajie Wang, Man Yang, Rongzhang Hao, Yanbo Li, Zhiwei Sun, Ji Wang","doi":"10.1039/d5en00161g","DOIUrl":"https://doi.org/10.1039/d5en00161g","url":null,"abstract":"Micro- and nanoplastic (MNP) pollution is a pervasive and growing problem, posing potential health risks to humans. MNPs enter the human body mainly through ingestion, inhalation, and dermal contact. They accumulate in the liver <em>via</em> the circulatory system and disrupt hepatic metabolism. However, the potential mechanisms underlying metabolic dysfunction caused by MNPs in the liver remain poorly understood. In the present study, integrated transcriptomic and metabolomic approaches were used to address the regulatory mechanisms of polystyrene nanoplastic (PSNP)-induced metabolic disorders in hepatocytes. First, transcriptomic analysis demonstrated the enriched pathways related to fatty acid degradation, fatty acid metabolism, amino acid biosynthesis, and amino acid metabolism and identified the involved critical genes (<em>ANGPTL4</em>, <em>ACSBG1</em>, <em>CPT1A</em>, <em>ACADVL</em>, <em>PSAT1</em>, and <em>PHGDH</em>). Subsequent metabolomic analysis indicated that PSNPs induced metabolic dysfunction by altering vital metabolites, mainly those of lipids (monoacylglycerols, fatty acids, sterol lipids, and glycerophospholipids) and amino acids (tyrosine, ethanolamine, and phenylalanine). Finally, integrated transcriptomic and metabolomic analysis manifested that PSNPs disrupted lipid (ether lipid, arachidonic acid, glycerophospholipid, and linoleic acid) and amino acid (phenylalanine, glycine, serine, and threonine) metabolism. In addition, the validated key genes (<em>HMGCS2</em>, <em>ANGPTL4</em>, <em>ACSBG1</em>, <em>CPT1A</em>, <em>ACADVL</em>, <em>MAOA</em>, <em>COMT</em>, <em>PSAT1</em>, and <em>PHGDH</em>) might contribute to PSNP-induced metabolic disorders. This study brings new perspectives to the underlying mechanism of PSNP-induced metabolic disorders in hepatocytes. It will help manage the health risk assessment of MNPs and improve public and planetary health.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":"14 1","pages":""},"PeriodicalIF":8.131,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144701428","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Correction: Three new species from the Middle Jurassic of China provide insights on wing spots diversity of Bittacidae (Insecta: Mecoptera).","authors":"Jiamiao Yu, Jinyu Wang, Yanjie Zhang, Chungkun Shih, Dong Ren, Xiaodan Lin, Hongru Yang","doi":"10.1007/s00114-025-02004-z","DOIUrl":"10.1007/s00114-025-02004-z","url":null,"abstract":"","PeriodicalId":794,"journal":{"name":"The Science of Nature","volume":"112 4","pages":"54"},"PeriodicalIF":2.1,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144697249","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Copper tungstate nanoparticles for the selective electrochemical detection of organophosphate pesticide","authors":"Umesh Narasimha Murthy, Sriram Balasubramanian, Alongkorn Pimpin, Nattapol Damrongplasit, Sea-Fue Wang, Werayut Srituravanich","doi":"10.1039/d5en00538h","DOIUrl":"https://doi.org/10.1039/d5en00538h","url":null,"abstract":"Organophosphorus pesticides are now widely used, and their consequences on public health are significant. In this work, unique copper tungstate nanoparticles (CuWO4 NPs) were successfully constructed and utilized to generate a modified electrode for selective and sensitive ethyl parathion determination. The as-prepared CuWO4 NPs were effectively analyzed using XRD, FTIR, and TEM, which confirmed their compositional and morphological advantages. The newly developed CuWO4 NPs possess a unique property that enhances electrocatalytic activity via rapid mass transport, several active sites, and increased conductivity. The modified electrode performed well as an electrochemical sensor for detecting ethyl parathion. It had a wide linear range (0.001–790.4 μM), low detection limit (0.0015 µM, S/N = 3), and strong anti-interference abilities. Owing to the rapid electron transport and specific ion adsorption, the developed sensor was also extremely stable and reproducible. This research suggests a viable technique for developing an enhanced ethyl parathion sensor with potential uses in detecting EP in real-world samples.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":"214 1","pages":""},"PeriodicalIF":8.131,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144701427","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Effects of neural stem cell-derived exosomes on MPTP-induced Parkinson's disease in mice.","authors":"Xiao Guo, Jiaying Xing, Xinlin Shi, Yuyan Cao, Liping An","doi":"10.1007/s00114-025-02002-1","DOIUrl":"10.1007/s00114-025-02002-1","url":null,"abstract":"<p><p>The objective of the study is to establish an extraction method of exosomes (Exos) from neural stem cells (NSCs) and to explore the effect of exosomes on 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine, MPTP). In this study, neural stem cell-derived exosomes (NSC-Exos) were extracted for treatment; a mouse model of PD induced by MPTP was established. After the treatment with NSC-Exos, the behavioral ability of mice in the EXO group was significantly improved compared to that in the MPTP group. The biochemical index test results showed that compared with that in the MPTP group, the activity of SOD and the content of GSH in the serum of mice in the EXO group increased (P < 0.01), while the content of MDA decreased (P < 0.05). Hematoxylin-eosin staining (HE) was used to observe the histopathological morphological changes in the brain of PD mice. Western blot results showed that compared with that in the MPTP group, after the treatment with NSC-Exos, the expression level of α-syn protein in the brain tissue of mice in the EXO group decreased, while that of TH protein increased (P < 0.05); compared with those in the MPTP group, the expression levels of I-κB, NF-κB, IL-6, IL-1β, and TNF-α proteins increased (P < 0.01). The 16S rDNA sequencing results of mouse gut microbiota showed that compared with that in the MPTP group, the abundance of Firmicutes decreased (P < 0.05), while the abundance of Bacteroidetes and Actinobacteria increased (P < 0.05) in the EXO group. The results of this study indicate that NSC-Exos have a certain therapeutic effect on the MPTP-induced PD in mice.</p>","PeriodicalId":794,"journal":{"name":"The Science of Nature","volume":"112 4","pages":"53"},"PeriodicalIF":2.1,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144688564","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Eco-nanotechnology: Phyto essential oil-based pest control for stored products","authors":"Samyuktha SS, Kannan Malaichamy, Madesh Kamalakannan, M. Vishnu, Soundararajan RP, T. Anand, Raghu R, Govindaraju Kasivelu","doi":"10.1039/d5en00397k","DOIUrl":"https://doi.org/10.1039/d5en00397k","url":null,"abstract":"The increasing global population prompts us to increase food production, highlighting the need to address post-harvest losses. A significant contributor to these losses is storage pests, sparticularly insect infestations in grains, accounting for substantial economic and qualitative impairments. Conventional pest management methods, while offering modest improvements, pose environmental risks in higher amounts. Essential oils (EOs) from natural sources emerge as an alternative to synthetic pesticides in the storage of grains and seeds of the crops. Introduction of nanotechnological tools offers innovative solutions to overcome limitations, which enhance the stability, longevity and persistence of insecticidal phyto-molecules in EO. Nanoscale carrier materials (polymeric NPs such as CS, cellulose acetate, PEI, PLGA, PLL, dendrimers, nanosphere, micelle, liposome, polymersome and mesoporous nanomaterials such as SiO2, CaO, ZnO, TiO2, MgO, Mg (OH)2, zeolite, carbon tubes, graphene oxides, MOFs) protect EOs from degradation factors such as heat, light, and oxidation, ensure prolonged bio-efficacy, and revolutionise pest management strategies. The innate characteristics of EOs disrupt insect physiology through various modes of action, including interference with metabolic processes and neurotoxic effects like inhibition of acetylcholinesterase, GABA receptors, octopamine receptors and anti-detoxification enzymes. Nanotechnology augments the properties of EO, manipulation at the nanoscale, thereby enhancing the EO delivery and efficacy. Nano-based formulations such as nanogels, nano-emulsions, and nanoparticles, offer selectivity, targeted release, prolonged persistence and control. This approach signifies a pivotal step towards insect pest management for food security and minimizing environmental impact, heralding a sustainable future for global agriculture.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":"1 1","pages":""},"PeriodicalIF":8.131,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144684886","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Phenotypic and functional trait variation in Malvastrum coromandelianum under different tree plantations in Pakistan.","authors":"Ashraaf Zahra, Farooq Ahmad, Ansa Asghar, Ummar Iqbal, Jazab Shafqat, Ahmed Raza, Khawaja Shafique Ahmad","doi":"10.1007/s00114-025-02003-0","DOIUrl":"10.1007/s00114-025-02003-0","url":null,"abstract":"<p><p>Malvastrum coromandelianum (L.) Garcke (Malvaceae) is a widely distributed herbaceous species known for its ecological adaptability and invasive behavior in tropical and subtropical ecosystems. In plantation forests, such invasive understory species can alter community composition, affect regeneration, and influence ecosystem functioning. Understanding their trait plasticity across contrasting tree plantation environments is critical for managing understory biodiversity and assessing the ecological consequences of afforestation practices. This study examined the phenotypic and functional responses of M. coromandelianum across different tree plantations in Pakistan, focusing on how canopy-driven microclimatic variation and soil physicochemical conditions influence its morphological, physiological, and anatomical traits. Results revealed that functional trait responses were highly variable and plantation-specific. Plant height, shoot length, and glycine betaine accumulation were highest under Morus nigra, corresponding with elevated soil phosphorus and calcium, while the longest roots and highest proline levels occurred under Melia azedarach, where soil calcium and magnesium were also enriched. The smallest individuals were observed under Tecomella undulata, where higher sodium and lower nutrient availability may have constrained growth. Ion concentrations in plant tissues varied significantly across plantation types, generally aligning with soil ion availability-for instance, elevated shoot and root sodium under Melia azedarach corresponded with higher soil salinity, while calcium accumulation was greatest in soils with higher calcium. Leaf anatomical traits, including thicker mesophyll and midrib tissues under Morus nigra, suggested resource-acquisitive strategies, while root epidermis and stem sclerenchyma thickening under Conocarpus lancifolius reflected stress-tolerant adaptations. Structural traits varied along the Leaf-Stem-Root Economics Spectrum (LSRES), indicating a balance between conservative and acquisitive strategies depending on resource availability. These findings highlight the species considerable plasticity in response to integrated canopy and soil factors. However, given its invasive nature, M. coromandelianum should not be promoted for use in ecological restoration without careful consideration of its ecological impacts. Instead, its consistent trait responses make it a potentially valuable bioindicator for assessing understory microhabitat conditions, especially in semi-arid plantations.</p>","PeriodicalId":794,"journal":{"name":"The Science of Nature","volume":"112 4","pages":"52"},"PeriodicalIF":2.1,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144688565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced immobilization of sorbed Pb and Cr during the Fe(II)-catalyzed transformation of ferrihydrite","authors":"Zhongkuan Wu, Chaojun Wang, Bruno Lanson, Wenbo Dong, Jiarui Jian, Feiting Yu, BinBin Wang, Haowen Zou, Bo Chen, Rui Sun, Feng He","doi":"10.1039/d5en00241a","DOIUrl":"https://doi.org/10.1039/d5en00241a","url":null,"abstract":"The secondary mineralization of metastable iron (oxyhydr)oxides into thermodynamically stable ones occurring in soil–water interface and sediment mediates the transport of pre-associated trace metal elements (and of other pollutants) in surficial environments. However, the fate of these associated metals and their impact during/on this mineralogical process remain incompletely understood. To address this question, we investigated the transformation of typical trace metal cation [Pb(<small>II</small>)] or anion [Cr(<small>VI</small>)O<small>₄</small><small>²⁻</small>] sorbed nanoscale ferrihydrite upon exposure to aqueous Fe(<small>II</small>). After 14 days of interaction, pre-sorbed Pb(<small>II</small>) modified marginally the extent of ferrihydrite conversion (∼93% <em>vs.</em> ∼94%), but did retard the formation of goethite (∼9% <em>vs.</em> ∼29%) by incorporating it into intermediates. In contrast, the transformation of Cr(<small>VI</small>)O<small>₄</small><small>²⁻</small> pre-sorbed ferrihydrite was essentially hindered (∼11%) owing to the formation of (FeO)<small>₂</small>CrO<small>₂</small><small>⁻</small> complex and less conductive Fe<small>_<em>x</em></small>Cr<small>_{1−<em>x</em>}</small>(OH)<small>₃</small> at the ferrihydrite surface. In all cases, the secondary mineralization of ferrihydrite significantly enhanced immobilization of sorbed metals (Pb/Cr release rate constant decreased by 99%/37%) owing to the formation of more stable iron (oxyhydr)oxides (<em>i.e.</em>, hematite, goethite, and lepidocrocite) partially incorporating pre-sorbed Pb(<small>II</small>) (&gt;24%), or to the formation of Fe<small>_<em>x</em></small>Cr<small>_{1−<em>x</em>}</small>(OH)<small>₃</small> and Cr<small>₂</small>O<small>₃</small> that are more resistant to acid corrosion than sorbed species. These findings offer valuable insights into the fate of typical trace metal elements during ferrihydrite transformation and contribute to the development of remediation strategies for metal contaminants.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":"13 1","pages":""},"PeriodicalIF":8.131,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144677523","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Effects of copper ions and their combination with nanoplastics on the aerobic denitrifying bacterium Pseudomonas stutzeri: denitrification performance, physiological and biochemical responses, and transcriptomic changes","authors":"Ze-yu Chen, Jian-wei Qu, Wei-le Meng, Miao-yi Tang, Xiao-wei Xu, Yue Zhi, You-peng Chen, Peng Yan, Fang Fang, Jin-song Guo","doi":"10.1039/d5en00310e","DOIUrl":"https://doi.org/10.1039/d5en00310e","url":null,"abstract":"Aerobic denitrifying bacteria are effective for removing N from wastewater during treatment. However, Cu can disrupt enzyme activity and damage cell structures, thereby inhibiting this denitrification process. Nanoplastics (NPs) adsorbed with Cu may mitigate the inhibitory effects of Cu, although their impact on bacteria can vary based on the properties of NPs, such as surface charge. This study investigated the effects of Cu and two types of polystyrene NPs (PS NPs and PS-NH<small>₂</small> NPs) on the growth, N removal performance, and physiological responses of the aerobic denitrifying bacterium <em>Pseudomonas stutzeri</em>. The results revealed that exposure to 10 mg L<small>⁻¹</small> Cu reduced <em>P. stutzeri</em> growth by 83.2%, significantly inhibited nitrate removal and nitrate reductase activity (<em>p</em> &lt; 0.05), and increased reactive oxygen species (ROS) levels by 115.5%. The presence of 50 mg L<small>⁻¹</small> PS NPs partially mitigated the growth inhibition from Cu (∼5%). However, 50 mg L<small>⁻¹</small> PS-NH<small>₂</small> NPs did not alleviate this inhibitory effect of Cu. Under Cu stress, N metabolism-related genes were downregulated (FC &lt; 0.5), leading to a 27% decrease in N removal performance. Conversely, genes associated with energy metabolism, Cu resistance, extracellular polymeric substance (EPS) synthesis, biofilm formation, and reactive oxygen species (ROS) scavenging were upregulated (FC &gt; 2), thereby enhancing strain ability to withstand Cu stress. Co-exposure to both Cu and PS NPs increased the expression of N metabolism-related genes (FC &gt; 2), which improved N removal efficiency by 46%. This improvement can be attributed to the ability of PS NPs to adsorb some Cu and enhance EPS secretion by <em>P. stutzeri</em>, thereby reducing Cu influx. These findings provide new insights into the impacts of Cu and NP stress on aerobic denitrifying bacterial growth in natural environments.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":"14 1","pages":""},"PeriodicalIF":8.131,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144677525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Social capital as a policy catalyst: Enhancing municipal investment in climate risk reduction and adaptation","authors":"Pablo Neudörfer ,&nbsp;Patricio Valdivieso","doi":"10.1016/j.gloenvcha.2025.103041","DOIUrl":"10.1016/j.gloenvcha.2025.103041","url":null,"abstract":"<div><div>Does social capital guide municipalities toward improved investment in disaster risk reduction and climate change adaptation? This article investigates whether communities with high vulnerability to climate change risks and strong social capital traits are more likely to invest in preparedness for climate change disasters. We leverage the exogenous variation of local downpours in Chile from 2009 to 2018 as a catalyst for increased awareness to examine the effects of social capital on public investment in adaptation. Our findings reveal that linking and bridging social capital levels affect preparedness as communities experience more downpours, while bonding social capital levels have no effect. These results suggest that linking and bridging could steer policymakers toward increased investment, contributing to more resilient and sustainable communities in the face of climate change. Furthermore, social capital may have the potential to shift policymakers’ focus from popular short-term disaster relief spending to long-term preparedness investments.</div></div>","PeriodicalId":328,"journal":{"name":"Global Environmental Change","volume":"94 ","pages":"Article 103041"},"PeriodicalIF":8.6,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144680022","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":"Projected land-use change emissions surpass climate change-induced carbon sinks in Sub-Saharan African biomes","authors":"Dabwiso Sakala,&nbsp;Maria J. Santos","doi":"10.1016/j.gloenvcha.2025.103039","DOIUrl":"10.1016/j.gloenvcha.2025.103039","url":null,"abstract":"<div><div>Land-use and land-cover change (LULCC) and climate change (CC) effects on carbon dynamics in Sub-Saharan Africa (SSA) have the potential to transition the region’s carbon balance from sink to source. Future shared socioeconomic pathways (SSPs) for SSA show high vulnerability to CC, high urbanisation, and cropland and pasture demands expected to rise in the coming decades. Yet the realisations of these pathways may be biome-specific as these are expected to behave differently when it comes to carbon dynamics and also be affected by different demands. Here, we examine the impacts of LULCC and CC on Net Ecosystem Exchange (NEE), Net Primary Productivity (NPP), and carbon turnover time of six SSA biomes, namely tropical rainforest, montane forest, moist savanna, dry savanna, temperate grassland and semi-desert, between 2015–2100 for the five SSPs. We performed four simulations where we (i) kept LULCC and CC constant, (ii) varied LULCC and kept CC constant, (iii) kept LULCC constant and varied CC, and (iv) varied both LULCC and CC and calculated their effect on NEE, NPP and carbon turnover time. We find that LULCC effects supersede those of CC, resulting in a net carbon source despite the sink effect of CC. LULCC alone drives major carbon losses across all scenarios, with moist and dry savannas resulting in the strongest carbon sources with cumulative NEE values of 74.93 and 44.85 PgC by 2100 under SSP4. In contrast, CC alone led to consistent carbon sinks across all scenarios in the semi-desert and tropical rainforest, with the strongest sinks observed under SSP5 (−8.36 PgC and − 3.77 PgC, respectively). Moist savanna also acted as a sink under SSP5 (−4.82 PgC) and SSP3 (−1.73 PgC). Combined effects largely reflect LULCC trends, confirming its dominant role in shaping future carbon dynamics. We further observe that intensifying LULCC may decrease biome carbon turnover time by 50 %, especially in tropical rainforests under SSP3 and SSP4. These results suggest that the CC-induced carbon sinks will unlikely dampen the increasing emissions from LULCC in SSA that may not be offset by 2100. Ultimately, our study demonstrates that sustaining SSA as a carbon sink will require urgent, biome-specific land management policies that integrate socioeconomic realities with the region’s evolving climate and development pathways.</div></div>","PeriodicalId":328,"journal":{"name":"Global Environmental Change","volume":"94 ","pages":"Article 103039"},"PeriodicalIF":8.6,"publicationDate":"2025-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144662308","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}