Journal of Environmental Management最新文献

{"title":"Quantifying nonlinear vegetation loss thresholds in response to cumulative and lagged drought effects in East Africa.","authors":"Yifan Zhao, Lihui Wang, Qichi Yang, Jinliang Huang, Paul Mapfumo, Elijah Nyakudya, Yun Du, Xue Yan, Feng Ling","doi":"10.1016/j.jenvman.2026.130948","DOIUrl":"10.1016/j.jenvman.2026.130948","url":null,"abstract":"<p><p>Drought is a major environmental stressor affecting ecosystem stability in East Africa, where strong hydroclimatic variability and limited water availability increase vegetation vulnerability. However, common and indicator-specific vegetation responses to cumulative and lagged drought remain insufficiently understood. This study developed a multi-indicator framework to quantify probabilistic vegetation drought-loss thresholds across East Africa during 2001-2022. NDVI, LAI, SIF, and GPP, representing vegetation greenness, canopy structure, photosynthetic activity, and ecosystem carbon uptake, respectively, were integrated with multiscale SPEI. A Copula-Bayes conditional probability framework was used to estimate thresholds at different vegetation low-value levels, while random forest regression and partial dependence analysis characterized nonlinear associations with environmental variables. Vegetation responses were dominated by short-term processes. Dominant cumulative timescales were concentrated within 2-4 months, whereas lagged responses occurred mainly at a 1-month delay. GPP nevertheless showed a distinct 10-12-month lagged tail in some regions, suggesting more persistent drought-related influences on ecosystem carbon uptake. With increasing vegetation-loss severity, thresholds generally shifted toward more negative SPEI values. Temperature, surface soil moisture, and elevation showed the highest predictive importance and nonlinear associations with threshold variability. By comparing four complementary vegetation indicators within a unified framework, this study identifies both shared short-term responses and process-specific differences in persistence and threshold behavior. The results help distinguish apparently stable vegetation with constrained functioning from states in which structure and function decline together, providing a useful basis for drought monitoring, ecological risk assessment, and early warning in East Africa.</p>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"417 ","pages":"130948"},"PeriodicalIF":9.2,"publicationDate":"2026-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149007627","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":"Dissolved organic matter molecular diversity and transformation potential are associated with microbial carbon use efficiency in paddy soils","authors":"Long Chen,&nbsp;Shulan Cheng,&nbsp;Huajun Fang,&nbsp;Yifan Guo,&nbsp;Fangying Shi,&nbsp;Hui Wang,&nbsp;Bingqian Liu,&nbsp;Haiguang Pu","doi":"10.1016/j.jenvman.2026.130923","DOIUrl":"10.1016/j.jenvman.2026.130923","url":null,"abstract":"&lt;div&gt;&lt;ul&gt;&lt;li&gt;&lt;span&gt;•&lt;/span&gt;&lt;span&gt;&lt;div&gt;Straw amendments increase TC and DOC; decomposed straw shows the greatest effect.&lt;/div&gt;&lt;/span&gt;&lt;/li&gt;&lt;li&gt;&lt;span&gt;•&lt;/span&gt;&lt;span&gt;&lt;div&gt;Straw amendments enhance microbial growth and CUE in unflooded soil.&lt;/div&gt;&lt;/span&gt;&lt;/li&gt;&lt;li&gt;&lt;span&gt;•&lt;/span&gt;&lt;span&gt;&lt;div&gt;Matched declines in growth and respiration sustain CUE in flooded straw-amended soil.&lt;/div&gt;&lt;/span&gt;&lt;/li&gt;&lt;li&gt;&lt;span&gt;•&lt;/span&gt;&lt;span&gt;&lt;div&gt;Decomposed straw enhances DOM diversity and sustains reactivity in flooded soil.&lt;/div&gt;&lt;/span&gt;&lt;/li&gt;&lt;li&gt;&lt;span&gt;•&lt;/span&gt;&lt;span&gt;&lt;div&gt;Water regime modulates how microbial DOM use links DOM traits to CUE.&lt;/div&gt;&lt;/span&gt;&lt;/li&gt;&lt;/ul&gt;&lt;/div&gt;&lt;div&gt;&lt;div&gt;Microbial carbon (C) use efficiency (CUE) is a key regulator of soil C sequestration, reflecting how assimilated C is partitioned between biomass production and respiration. In paddy soils, how dissolved organic matter (DOM) molecular characteristics and microbial specialization jointly relate to CUE across straw amendments and moisture regimes remains unclear. We incubated paddy soil for 180 days under flooded and unflooded conditions, adding equal C (1.32 g C kg&lt;sup&gt;−1&lt;/sup&gt; soil) as fresh straw, straw-derived biochar, or decomposed straw (DS). CUE was quantified by H&lt;sub&gt;2&lt;/sub&gt;&lt;sup&gt;18&lt;/sup&gt;O labeling; DOM composition and its transformation potential were characterized using FT-ICR MS and paired mass distance (PMD) analysis, respectively. Microbial specialization was quantified using the H&lt;sub&gt;2&lt;/sub&gt;’ index derived from microbial–DOM bipartite networks. All three amendments significantly increased CUE under both moisture regimes, with DS producing the largest and most consistent increase. Relative to the control, DS increased microbial C growth by 204% and 172% under unflooded and flooded conditions, respectively, while maintaining the highest CUE. DS increased DOM molecular diversity and showed the highest top 30 PMDs. Partial least squares path modeling showed that higher CUE was associated with greater nutrient availability and lower microbial specialization under unflooded conditions, whereas metabolic constraints showed the strongest negative association with CUE under flooded conditions. Overall, CUE responses varied with substrate quality, DOM molecular properties, microbial specialization, and moisture rather than C input quantity alone. These findings clarify how straw and water management may influence microbial C allocation and potential C retention in paddy soils.&lt;/div&gt;&lt;/div&gt;&lt;div&gt;Microbial carbon (C) use efficiency (CUE) is a key regulator of soil C sequestration, reflecting how assimilated C is partitioned between biomass production and respiration. In paddy soils, how dissolved organic matter (DOM) molecular characteristics and microbial specialization jointly relate to CUE across straw amendments and moisture regimes remains unclear. We incubated paddy soil for 180 days under flooded and unflooded conditions, adding equal C (1.32 g C kg&lt;sup&gt;−1&lt;/sup&gt; soil) as fresh straw, straw-derived biochar","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"417 ","pages":"Article 130923"},"PeriodicalIF":9.2,"publicationDate":"2026-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148975188","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":"Dominant plant functional groups outperform diversity in regulating biomass under yak seasonal grazing in an alpine meadow on Qinghai-Tibetan Plateau","authors":"Qi Lu,&nbsp;Haozhe Zheng,&nbsp;Shulin Wang,&nbsp;Qingshan Fan,&nbsp;Fujiang Hou","doi":"10.1016/j.jenvman.2026.130935","DOIUrl":"10.1016/j.jenvman.2026.130935","url":null,"abstract":"<div><div>Seasonal grazing is a practice for alpine meadows that involves rotating pastures with the seasons. Nevertheless, the mechanisms by which seasonal grazing affects the aboveground biomass (AGB) of plant communities and functional groups in the alpine meadows of the Qinghai-Tibetan Plateau remain unclear. Based on a long-term seasonal grazing management experiment established in an alpine meadow since 2010, this study investigated the effects of spring, summer, autumn, and winter grazing on plant diversity, functional group species richness, climate, soil nutrients, and soil enzyme activity in alpine meadows. We assessed plant diversity, functional group species richness, soil properties, and soil enzyme activity to explore potential mechanisms underlying seasonal grazing effects on community AGB and functional group AGB. The results indicated that winter grazing leads to higher AGB in the plant community, Gramineae, and Cyperaceae, whereas summer grazing reduces plant AGB. Furthermore, functional group species richness plays a more critical role than plant diversity in regulating plant AGB. Plant diversity and soil properties are key mediators of grazing effects on plant AGB, and they have a significant positive impact on both plant community and functional group AGB. In different grazing seasons, alpine meadow plant AGB shows strong sensitivity to climate (precipitation and temperature). Summer and autumn grazing enhance plant diversity, while winter grazing promotes the accumulation of plant AGB. Therefore, moderate grazing during the periodic cold and warm seasons is an appropriate grazing system for maintaining the sustainable development of alpine meadows.</div></div>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"417 ","pages":"Article 130935"},"PeriodicalIF":9.2,"publicationDate":"2026-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148981730","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":"Metagenome-resolved evidence that soluble factors in granular activated carbon–amended reactor effluent reprogram propionate metabolism and methanogenic pathways","authors":"Qi Huang,&nbsp;Yingdi Zhang,&nbsp;Carlo Bais,&nbsp;Yang Liu","doi":"10.1016/j.jenvman.2026.130925","DOIUrl":"10.1016/j.jenvman.2026.130925","url":null,"abstract":"<div><div>Granular activated carbon (GAC) enhances anaerobic digestion performance, yet the mechanisms underlying reactor-scale improvements remain incompletely understood, particularly how GAC affects biomass not attached to its surface. Here, sludge from a non-GAC up-flow anaerobic sludge blanket reactor was incubated with 0.45-μm-filtered effluents from non-GAC and GAC-amended reactors under repeated propionate loading, followed by genome-resolved metagenomics. GAC-reactor effluent increased methane yield from 64 ± 3% to 76 ± 3% (<em>p</em> &lt; 0.01) in the absence of GAC particles. A non-redundant catalog of 170 quality-filtered metagenome-assembled genomes (MAGs) was recovered, enabling pathway- and gene-set quantification. Genomic potential for both major propionate-oxidation routes increased in the GAC-effluent group relative to the non-GAC group, with a larger increase for the methylmalonyl-CoA (MMC) route than for the dismutation route (1.289- versus 1.221-fold). Accordingly, the MMC-to-dismutation preference ratio was 5.60% higher in the GAC-effluent group, alongside a broader carrier base. Cobamide potential shifted toward remodeling and cobamide-dependent use rather than increased de novo corrin-ring synthesis. Candidate electron-transfer architectures were also rebalanced: PilA-associated carriers became less prominent, whereas maturation-supported multiheme cytochrome carriers increased from 22.96% to 34.90% of community abundance, although H₂/formate-module carriers remained prevalent. Quorum-sensing systems underwent pathway- and carrier-specific redistribution, while all eight curated extracellular-polysaccharide modules showed higher mean gene abundance in the GAC-effluent composite. These findings show that a filter-passing effluent fraction can extend GAC-associated effects beyond direct particle contact and link enhanced methanogenesis to a broader, redistributed network of metabolic, redox, and coordination capacities. This expands the mechanistic framework of conductive-material-assisted anaerobic digestion and provides a basis for harnessing GAC-derived functions throughout the reactor.</div></div>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"417 ","pages":"Article 130925"},"PeriodicalIF":9.2,"publicationDate":"2026-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148987474","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"The properties and applications of carbon-based concrete: A review from the dimensionality differences of carbon-based materials","authors":"Chunyan Chai,&nbsp;Haoyu Shen,&nbsp;Mingrui Sui,&nbsp;Yue Dong,&nbsp;Jiaxin Wu,&nbsp;Yiying Jiang,&nbsp;Xiang Wang,&nbsp;Ziyi Gu,&nbsp;Teta Huguette Dion","doi":"10.1016/j.jenvman.2026.130927","DOIUrl":"10.1016/j.jenvman.2026.130927","url":null,"abstract":"<div><div>Carbon-based concrete (CBC), prepared by addition of carbon-based materials (CBMs), holds promise for broadening the application scopes of traditional concrete. The dimensionality of the CBM, as the decisive factor, plays a crucial role in shaping CBC performance including mechanical and physicochemical properties. However, researches considering CBM dimensionality on the properties and applications of CBC are limited. This review provided a comprehensive summary of the effect of CBM on CBC with special perspective of CBM dimensionality, commencing with the research hotspots analysis of dimensionality-related articles from 2020 to 2025. Then, it divided the CBMs into four dimensionalities according to their physicochemical structure, followed by in-depth exploration of the impact of CBM dimensionality on properties and applications of CBC. Furthermore, this review addressed the performance distinction of CBC derived from the differences in dimensionality-triggered carbon atom connectivity and atomic composition of CBM via a modified mathematical analysis method. By offering this novel perspective, it would contribute to provide a highly-valued enlightenment for selecting or optimizing carbon precursor to prepare the desirable engineering-oriented CBC.</div></div>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"417 ","pages":"Article 130927"},"PeriodicalIF":9.2,"publicationDate":"2026-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148966018","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":"Glacier changes in the Qilian Mountains over the past 60+ years: Multi-factor quantitative analysis of spatial heterogeneity and driving mechanisms","authors":"Xiaojuan Hu,&nbsp;Xia Li,&nbsp;Xiqin Cai,&nbsp;Xiang Qin,&nbsp;Yushuo Liu,&nbsp;Jianqin Kang","doi":"10.1016/j.jenvman.2026.130921","DOIUrl":"10.1016/j.jenvman.2026.130921","url":null,"abstract":"&lt;div&gt;&lt;div&gt;Against the backdrop of global climate warming, glaciers in the Qilian Mountains have continued to retreat, yet existing monitoring data suffer from insufficient timeliness, and the analysis of influencing factors on glacier retreat lacks multi-element synergistic consideration. This study, based on data from two Chinese glacier inventories, glacier survey data of the Qilian Mountains in 2024, and long-term gridded temperature and precipitation data, comprehensively employs trend analysis, correlation analysis, and geographically weighted regression (GWR) to systematically examine the spatiotemporal evolution characteristics of glaciers and climatic elements in the Qilian Mountains from the 1960s to 2024, and to reveal the response mechanisms of glacier changes to climatic factors and local topographic factors. The results indicate that glaciers in the Qilian Mountains have exhibited a persistent retreat trend overall, with a total area retreat rate of 29.11%, and the retreat intensity has intensified in recent years. Spatial differences in glacier retreat rates are pronounced: in the middle and eastern parts, the Heihe, Shiyang, and Datong river basins have retreat rates exceeding 60%, whereas the western part, including the Haerteng and Shule river basins, has rates below 30%, displaying distinct differentiation patterns of \"fast in the east, slow in the west\", \"fast in the south, slow in the north\", and \"fast at low elevations, slow at high elevations\". Regional climate shows warming across the entire area with a slight increase in precipitation. The warming amplitude exhibits a pattern of higher in the west and lower in the east, with the greatest warming occurring in winter; precipitation increases are concentrated in summer and show a spatial pattern wherein the central and eastern parts receive more than the western part. Modulated by local conditions such as glacier elevation base and glacier size, the western Qilian Mountains experience stronger warming but relatively weaker glacier ablation, forming a spatially asymmetric pattern between climatic forcing and glacier response. Mechanism analysis reveals that temperature rise is the dominant driver of glacier retreat in the Qilian Mountains, and the slight increase in precipitation is insufficient to offset the mass loss from glacier ablation. The shift in precipitation phase induced by climate warming further exacerbates glacier loss through both material supply and energy input pathways. The GWR model confirms that large-scale climatic forcing determines the overall glacier retreat trend, while local factors such as elevation, aspect, slope, and glacier size regulate the sensitivity of glacier response to climate, collectively shaping the differentiated spatial pattern of glacier retreat. Based on these findings, it is recommended to implement differentiated glacier protection and water resource regulation strategies, strengthen climate change adaptation and collaborative gove","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"417 ","pages":"Article 130921"},"PeriodicalIF":9.2,"publicationDate":"2026-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148987466","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":"Co-pelletization of refuse-derived fuel and sewage sludge for synergistic combustion and in-situ chlorine retention","authors":"Shujun Wu,&nbsp;Yunbo Zhai,&nbsp;Duo Sun,&nbsp;Hongkui He,&nbsp;Jian Hu,&nbsp;Changlan Hou,&nbsp;Qi Zhang,&nbsp;Jingchao Zhao,&nbsp;Haibo Li","doi":"10.1016/j.jenvman.2026.130937","DOIUrl":"10.1016/j.jenvman.2026.130937","url":null,"abstract":"<div><div>Refuse-derived fuel (RDF) and sewage sludge (SS) were co-pelletized to produce S-RDF with sludge blending ratios ranging from 0 to 40% by weight. The effects of sludge addition on pellet properties, combustion behavior, kinetics, and chlorine retention were systematically investigated. Results showed that sludge-derived extracellular polymeric substances enhanced pelletization, increasing compressive strength by 12% at a sludge blending ratio of 40%. At blending ratios of 30% or less, the lower ignition temperature and catalytic inorganic minerals in sludge jointly promoted synergistic combustion, increasing the comprehensive combustion index by 38.05% while reducing activation energy. Furthermore, phosphorus- and aluminum-rich minerals derived from sludge substantially promoted chlorine stabilization via the formation of chlorapatite, calcium chlorophosphate, and aluminosilicate phases. At a 40% sludge incorporation level, this led to a 4.37-fold increase in chlorine retention in bottom slag at 800 ^°C compared with pure RDF, highlighting the effectiveness of sludge minerals in in-situ chlorine immobilization. These findings demonstrate the multifunctional role of sewage sludge in improving fuel quality, combustion performance, and in-situ chlorine stabilization, providing a sustainable strategy for waste-to-energy applications.</div></div>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"417 ","pages":"Article 130937"},"PeriodicalIF":9.2,"publicationDate":"2026-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148987520","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":"Interactive effects of warming and nitrogen level on N₂O fluxes and associated soil processes in an alpine wet meadow.","authors":"Jianan Du, Weiwei Ma, Guang Li, Jianghua Wu, Wanpeng He, Wenhua Chang, Shuzhuo Li, Weijun Zhao, Hongze Ma","doi":"10.1016/j.jenvman.2026.130973","DOIUrl":"10.1016/j.jenvman.2026.130973","url":null,"abstract":"<p><p>How warming modifies nitrogen (N)-level-dependent nitrous oxide (N₂O) responses and associated soil processes in alpine wet meadows remains unclear. In this study, we conducted an open-top chamber warming and two tested N addition levels on the northeastern Qinghai-Tibet Plateau, with control (CK), warming (W), N addition at 20 kg N ha^-1 yr^-1 (N₁) and 30 kg N ha^-1 yr^-1 (N₂), and their corresponding combined warming treatments (WN₁ and WN₂). N₂O fluxes, soil carbon and nitrogen components, and enzyme activities were measured during the growing seasons of 2021 and 2023. The results showed that observation-period cumulative net N₂O exchange under W was -128.61 and -71.87 mg m^-2 in 2021 and 2023, respectively. Compared with CK, N₁ increased cumulative fluxes by 53.0%-70.8%, which was higher than the effect of N₂, ranging from -1.5% to 45.1%. WN₁ and WN₂ increased cumulative fluxes by 195.8%-219.1% and 89.0%-121.3%, respectively, showing significant positive non-additive effects. Integrated analysis indicated that soil moisture and inorganic N showed the strongest overall associations with N₂O variation. The decrease in soil moisture under W, the significantly lower enzyme-activity score under N2, and reductions in microbial biomass were associated with N₂O variation. Overall, under the OTC warming treatment tested here, N₂O responses did not increase monotonically from N1 to N2, highlighting the importance of jointly considering soil moisture, inorganic N availability, microbial biomass, and N-transformation enzyme responses when assessing N₂O dynamics in alpine wet meadows under future environmental change.</p>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"417 ","pages":"130973"},"PeriodicalIF":9.2,"publicationDate":"2026-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149000977","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":"Environmental fee to tax reform and total factor carbon productivity of heavily polluting firms in China.","authors":"Lijun Jia, Yingming Liu, Xueli Chen","doi":"10.1016/j.jenvman.2026.130955","DOIUrl":"10.1016/j.jenvman.2026.130955","url":null,"abstract":"<p><p>China's pollution discharge tax reform, which replaced the pollutant emission fee system with a standardized environmental tax, provides a quasi-natural experiment to examine the effects of market-based environmental regulation on firm performance. Using panel data on A-share listed firms in heavily polluting industries from 2012 to 2021, this study investigates the impact of the environmental fee to tax reform on total factor carbon productivity. Enterprise total factor carbon productivity is measured using a slacks-based measure global Malmquist-Luenberger index, and policy effects are identified through a difference-in-differences framework. The results show that the reform significantly improves total factor carbon productivity among heavily polluting firms. Parallel trend tests and a series of robustness checks, including trimming extreme values and placebo tests, support the validity of the findings. Heterogeneity analysis indicates that the effects are stronger for large firms, firms located in western China, and firms in the utilities sector. Mechanism analysis suggests that the reform promotes environmental investment and increases pollution-related discharge and compliance costs, thereby strengthening incentives for cleaner production and efficiency upgrading. Overall, the findings provide firm-level evidence that environmental taxation facilitates green transformation and high-quality development in pollution-intensive industries.</p>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"417 ","pages":"130955"},"PeriodicalIF":9.2,"publicationDate":"2026-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149015147","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":"Annual reconstruction of seasonal isolated lakes reveals historical contraction and restoration baselines in the Poyang Lake floodplain.","authors":"Chun Yang, Zhiqiang Tan, Yongjiu Cai, Jing Yao, Zhiwei Guo, Xiaolong Wang","doi":"10.1016/j.jenvman.2026.130985","DOIUrl":"10.1016/j.jenvman.2026.130985","url":null,"abstract":"<p><p>Seasonal isolated lakes (SILs) are shallow water bodies defined by their temporary hydrological disconnection from the main lake and river network, yet their long-term abundance, turnover, and spatial legacy remain poorly resolved. Using a fused daily 30 m Seamless Data Cube (2000-2022), we extracted surface water, identified isolated states, generated annual maximum extents, and tracked polygons as Global ID lineages in the Poyang Lake floodplain. Total SIL area ranged from 372.31 to 650.73 km² and increased at 5.74 km² yr^-1, while SIL counts increased across minimum area thresholds of 0.5-2.0 km². Count increases were concentrated in the smallest size classes, whereas lakes larger than 10 km² were few but contributed disproportionately to total area. Tracking identified 807 Global IDs; 510 (63.20%) were detected in only one annual map, whereas 39 were detected in 16-23 of the 23 annual maps. Maximum annual area was positively correlated with interannual occurrence persistence (Spearman's ρ = 0.595, p < 0.001), and this relationship remained robust under alternative tracking rules and stricter minimum detection requirements within a year. Topology between adjacent years showed that the increase in the number of small objects reflected reappearance, split-derived transitions, and newly detected objects, rather than providing evidence for the formation of new depressions. In 2022, SILs covered 458.16 km², representing 37.02% of the 1237.50 km² unique historical spatial footprint and 62.98% spatial contraction. Long-lived lineages were used to identify priorities for field assessment and reference candidates. These results reconcile increasing annual SIL area with historical spatial contraction and provide an object-based framework for defining restoration baselines for floodplain conservation and adaptive management.</p>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"417 ","pages":"130985"},"PeriodicalIF":9.2,"publicationDate":"2026-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149015163","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}