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Riverine nutrient differentiation patterns and pollutant flux behavior affecting the mainstream-tributary coupling environment in a mega drainage basin, PR China 影响大型流域干支流耦合环境的河流养分分异模式和污染物通量行为
IF 3.9 2区 地球科学
Anthropocene Pub Date : 2025-10-09 DOI: 10.1016/j.ancene.2025.100498
Chaochen Guo , Liang Li , Haobo Sun , Shiqiang Lu , Biao Wang , Xiaoguang Li , Xubo Lv , Kun Lei
{"title":"Riverine nutrient differentiation patterns and pollutant flux behavior affecting the mainstream-tributary coupling environment in a mega drainage basin, PR China","authors":"Chaochen Guo ,&nbsp;Liang Li ,&nbsp;Haobo Sun ,&nbsp;Shiqiang Lu ,&nbsp;Biao Wang ,&nbsp;Xiaoguang Li ,&nbsp;Xubo Lv ,&nbsp;Kun Lei","doi":"10.1016/j.ancene.2025.100498","DOIUrl":"10.1016/j.ancene.2025.100498","url":null,"abstract":"<div><div>The Yangtze River Basin (YRB) was facing increasing ecological stress due to nutrient-induced eutrophication, yet the coupling response of natural and anthropogenic factors on the interactions among hydrological processes, water quality, and pollutant fluxes across mainstream-tributary systems remain inadequately quantified. This study integrated water quality index (WQI) assessment with multivariate statistics to analyze spatiotemporal patterns of river flow, water quality, and pollutant fluxes between 2017 and 2022. Results revealed an overall improvement in water quality (average WQI increase of 11.6 %), though persistent phosphorus limitation (TN:TP &gt; 19.4) sustained eutrophication risk. Significant spatial heterogeneity was identified between upper and lower basins. The 2022 drought reduced annual flow by 22.0 % relative to decadal averages, diminishing tributary nutrient retention and elevating downstream pollutant fluxes. Cluster analysis identified four pollutant flux regimes, with strong monthly correlations between river flow and nitrogen/phosphorus fluxes (<em>p</em> &lt; 0.001). Analysis of variance confirmed significant spatial differences in TN and TP fluxes across sub-basins, with monthly flux-flow-concentration correlations exceeding annual trends. Redundancy analysis highlighted stronger anthropogenic impacts on pollutant behavior in the lower basin. The Three Gorges Dam (TGD) significantly intercepted pollutants and altered elemental cycling pathways. These findings established a quantitative framework for coupled hydrologic-biogeochemical processes in mega river systems and inform targeted water quality management strategies.</div></div>","PeriodicalId":56021,"journal":{"name":"Anthropocene","volume":"52 ","pages":"Article 100498"},"PeriodicalIF":3.9,"publicationDate":"2025-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145270234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Assessing the impacts of anthropogenic-induced land use/land cover changes in wetlands using remotely sensed information: A systematic state-of-the-art review and future directions 利用遥感信息评估湿地人为土地利用/土地覆盖变化的影响:系统的最新回顾和未来方向
IF 3.9 2区 地球科学
Anthropocene Pub Date : 2025-09-30 DOI: 10.1016/j.ancene.2025.100496
Ali Haji Elyasi , Dorna Gholamzade Ledari , Mohsen Nasseri , Peyman Badiei
{"title":"Assessing the impacts of anthropogenic-induced land use/land cover changes in wetlands using remotely sensed information: A systematic state-of-the-art review and future directions","authors":"Ali Haji Elyasi ,&nbsp;Dorna Gholamzade Ledari ,&nbsp;Mohsen Nasseri ,&nbsp;Peyman Badiei","doi":"10.1016/j.ancene.2025.100496","DOIUrl":"10.1016/j.ancene.2025.100496","url":null,"abstract":"<div><div>Researchers have consistently strived to improve the discriminability of various land cover types, particularly between aquatic and vegetative areas, through diverse remote sensing techniques. This is crucial for conserving wetlands that have been degraded and undergone land use changes due to anthropogenic activities. This paper performs a meta-analysis and provides a systematic review of studies related to the land use classification process. After an extensive search, 74 papers were selected (PRISMA method) for detailed analysis. The study aims to introduce, investigate, and evaluate remote sensing methodologies for wetland land use classification and assess how these methods impact the detection of wetland change patterns. The findings reveal that 10 % of the studies utilized an object-based approach with optimization based on a trial-and-error method. Additionally, wetland researchers prefer combining Landsat data with supervised machine learning classification methods (82 %). This paper suggests conducting an in-depth examination of integrating dynamic training sample selection methods with object-based approaches, automating the optimization of segmentation parameters, and employing transfer learning techniques for classification. Moreover, the review highlights existing gaps and proposes future research avenues to advance research. For instance, improving accuracy is possible through explainable artificial intelligence and replacing the weak and commonly used Kappa with new evaluation metrics. Additionally, a new concept framework, “Aquatic Harmony/Aquatic Disruption,” and a wetland risk assessment map have been introduced, offering a comprehensive perspective on the impact of anthropogenic activities on wetlands. This review may open new horizons for wetland researchers by providing alternative approaches for the future.</div></div>","PeriodicalId":56021,"journal":{"name":"Anthropocene","volume":"52 ","pages":"Article 100496"},"PeriodicalIF":3.9,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145227788","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Deposition and 14C-based source apportionment of black carbon in a small lake in southern Sweden since 1450 CE 1450年以来瑞典南部一个小湖泊中黑碳的沉积和基于14c的来源分配
IF 3.9 2区 地球科学
Anthropocene Pub Date : 2025-09-25 DOI: 10.1016/j.ancene.2025.100495
Karl Ljung, Edward Allison, Yevhenii Rohozin, Ethan L. Silvester, Dan Hammarlund
{"title":"Deposition and 14C-based source apportionment of black carbon in a small lake in southern Sweden since 1450 CE","authors":"Karl Ljung,&nbsp;Edward Allison,&nbsp;Yevhenii Rohozin,&nbsp;Ethan L. Silvester,&nbsp;Dan Hammarlund","doi":"10.1016/j.ancene.2025.100495","DOIUrl":"10.1016/j.ancene.2025.100495","url":null,"abstract":"<div><div>Black carbon (BC) is produced by incomplete combustion of biomass and fossil fuels and is released as aerosols to the atmosphere with effects on the climate, environment, and human health. Current BC emissions are well monitored in many parts of the world. However, the geographical coverage is limited, and historical records of BC accumulation are still scarce. Here we present a quantification of soot BC (SBC) concentrations in sediments deposited in a small lake in southern Sweden during recent centuries. The SBC was quantified using chemical and thermal oxidation at 375°C (CTO375). The SBC concentrations are low (c. 3 mg/g) in the preindustrial sediments older than 1650 CE and reached maximum concentrations (c. 8.5 mg/g) after 1900 CE. The increase in SBC accumulation started before the major phase of industrialisation of Sweden in the 19th century, probably related to local emission sources from increased biomass burning or coal extraction in the region that expanded from the second half of the 17th century. The effect of industrialisation is seen as an increase in SBC concentration and accumulation from around 1875 CE. The maximum accumulation of SBC was observed between 1950 CE and 2005 CE. The fraction of the SBC derived from fossil fuels was estimated using radiocarbon-based source apportionment. Biomass was the main source of SBC throughout the studied period. The maximum contribution from fossil fuel was observed between 1970 CE and 1990 CE, amounting to 26 −28 % of the total SBC. From 2000 CE the SBC deposition was dominated by biomass sources, probably because of a transition from fossil fuels to biomass as the dominant source of heating in Sweden.</div></div>","PeriodicalId":56021,"journal":{"name":"Anthropocene","volume":"52 ","pages":"Article 100495"},"PeriodicalIF":3.9,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145227789","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Sedimentary records from an alpine wetland in southwestern China reveal the timing of Anthropocene human impact 中国西南部高寒湿地的沉积记录揭示了人类世人类影响的时间
IF 3.9 2区 地球科学
Anthropocene Pub Date : 2025-09-03 DOI: 10.1016/j.ancene.2025.100493
Kunshan Bao , Weidan Shen , Zhongle Zhou , Yang Gao
{"title":"Sedimentary records from an alpine wetland in southwestern China reveal the timing of Anthropocene human impact","authors":"Kunshan Bao ,&nbsp;Weidan Shen ,&nbsp;Zhongle Zhou ,&nbsp;Yang Gao","doi":"10.1016/j.ancene.2025.100493","DOIUrl":"10.1016/j.ancene.2025.100493","url":null,"abstract":"<div><div>Quantitatively distinguishing the historical record of potentially harmful trace element (PHTE) pollution in alpine wetland sediments enables an understanding of the nature and scale of Anthropocene human impact. In this study, we present PHTE and stable isotope (Pb and Hg) records for a sediment core from Jiulongchi wetland, Fanjing Mountain, southwest China. We calculate the chemical index of alteration and enrichment factors, and conduct multivariate statistics to reveal that the PHTEs in these wetland sediments were mainly regulated by weathering and erosion processes, as well as organic matter content. The pollution history for the last 1300 years is reconstructed from stable Pb and Hg isotopes, PHTE enrichment factors and accumulation rates. Coal combustion is shown to be a major anthropogenic source for PHTE input into the wetland, commencing in the 1940s and amplified during the 1950s. The research findings reflect the pattern of anthropogenic environmental changes in a remote tourist-hotspot area, which can aid in formulating policies to achieve a sustainable and environmentally healthy future for a vulnerable but important ecosystem.</div></div>","PeriodicalId":56021,"journal":{"name":"Anthropocene","volume":"52 ","pages":"Article 100493"},"PeriodicalIF":3.9,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145109097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The impact of species invasion and nutrient dynamics on organic carbon burial in lake ecosystems 物种入侵及养分动态对湖泊生态系统有机碳埋藏的影响
IF 3.9 2区 地球科学
Anthropocene Pub Date : 2025-09-01 DOI: 10.1016/j.ancene.2025.100492
Dandan Yang , Taohui Li , Guoliang Lei , Qiaohua Han , Jiqing Yin , Yunxia Ma , Qiushi Liang , Yiqin Cao , Wenxiang Zhang
{"title":"The impact of species invasion and nutrient dynamics on organic carbon burial in lake ecosystems","authors":"Dandan Yang ,&nbsp;Taohui Li ,&nbsp;Guoliang Lei ,&nbsp;Qiaohua Han ,&nbsp;Jiqing Yin ,&nbsp;Yunxia Ma ,&nbsp;Qiushi Liang ,&nbsp;Yiqin Cao ,&nbsp;Wenxiang Zhang","doi":"10.1016/j.ancene.2025.100492","DOIUrl":"10.1016/j.ancene.2025.100492","url":null,"abstract":"<div><div>The invasion of <em>Neosalanx taihuensis</em> (Nt) into Yunnan Plateau lakes since the late 1970s has profoundly altered biogeochemical cycles and disrupted ecological equilibrium. While climate variability influences native species resilience, the impact of invasive species on carbon burial in these spatially heterogeneous lakes remains poorly quantified. We combine binary and structural equation modeling (SEM) to explore the mechanisms by which species invasion and lake nutrient dynamics drive carbon burial. Results indicate that organic carbon accumulation rates (OCAR) in Yunnan Plateau lakes range from 3.74 g·m<sup>−2</sup>·yr<sup>−1</sup> to 148.23 g·m<sup>−2</sup>·yr<sup>−1</sup>, with more than tripled in four lakes over the past 60 years. Stable isotopes and C/N ratio confirm a post-invasion shift from allochthonous to endogenous organic matter dominance. Notably, Nt exerts a stronger direct effect on OCAR (path coefficient 0.273, <em>p</em> &lt; 0.001) than climate, mediated by nutrient release and planktonic regime shifts. Meanwhile, invasive species amplify organic carbon burial (OCB) via the invasion-eutrophication feedback. These findings highlight how lake hydrology, basin climate and nutrient level directly regulate OCAR while indirectly modulate it through Nt biomass. Furthermore, invasive species act as biogeochemical engineers, reshaping carbon sink dynamics through biotic forcing. This study establishes a predictive framework for assessing climate-invasion synergies in vulnerable plateau lake ecosystems, offering key insights for ecosystem management and conservation.</div></div>","PeriodicalId":56021,"journal":{"name":"Anthropocene","volume":"51 ","pages":"Article 100492"},"PeriodicalIF":3.9,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144931889","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Spatiotemporal evolution and attribution of urban exposure to compound precipitation and wind speed extremes in China since 1980 1980年以来中国城市复合降水和极端风速暴露的时空演变与归因
IF 3.9 2区 地球科学
Anthropocene Pub Date : 2025-08-14 DOI: 10.1016/j.ancene.2025.100489
Liling Chu , Chao He , Yang Jiang
{"title":"Spatiotemporal evolution and attribution of urban exposure to compound precipitation and wind speed extremes in China since 1980","authors":"Liling Chu ,&nbsp;Chao He ,&nbsp;Yang Jiang","doi":"10.1016/j.ancene.2025.100489","DOIUrl":"10.1016/j.ancene.2025.100489","url":null,"abstract":"<div><div>Frequent compound precipitation and wind speed extremes (CPW) increasingly threaten urban sustainability in China. This study comprehensively investigated the spatiotemporal evolution patterns and drivers of CPW in 355 cities in China from 1980 to 2018 based on China meteorological forcing dataset and China land cover dataset with inter-decadal trend analyses and exposure risk decomposition. The study revealed that from 1980 to 2018, 45 % of cities saw rising CPW frequency and intensity, while 60 % exhibited increased CPW risk. Notably, half of the cities with increasing trends showed sustained rises, primarily concentrated in northern and western China. Attribution analysis indicated that urbanization contributes to the increased risk of CPW while climate change and interactions are multidirectional. Specifically, the effect of climate change and interactions led to an increase in CPW risk in more than 40 % of cities, while urbanization led to an increase in CPW risk in more than 35 % of cities. However, the impacts of the drivers were spatially heterogeneous. Climate change and interactions dominate CPW contributions in northern, northwestern, North China, southwestern, and southern coastal areas of China, while urbanization dominates in the northeastern, eastern North China, eastern China, central China, and southeastern coastal areas.</div></div>","PeriodicalId":56021,"journal":{"name":"Anthropocene","volume":"51 ","pages":"Article 100489"},"PeriodicalIF":3.9,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144852574","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The effects of seaweed and shellfish mariculture on the fecal carbon flux of zooplankton in a mariculture base of southern China: Implications for the biological pump 海藻和贝类养殖对华南海水养殖基地浮游动物粪便碳通量的影响:对生物泵的启示
IF 3.9 2区 地球科学
Anthropocene Pub Date : 2025-08-13 DOI: 10.1016/j.ancene.2025.100491
Jieli Li, Ruzhong Weng, Yufeng Yang, Qing Wang
{"title":"The effects of seaweed and shellfish mariculture on the fecal carbon flux of zooplankton in a mariculture base of southern China: Implications for the biological pump","authors":"Jieli Li,&nbsp;Ruzhong Weng,&nbsp;Yufeng Yang,&nbsp;Qing Wang","doi":"10.1016/j.ancene.2025.100491","DOIUrl":"10.1016/j.ancene.2025.100491","url":null,"abstract":"<div><div>Zooplankton play a pivotal role in the marine ecosystem, with their fecal pellets constituting the primary component of passively sinking particles in the ocean. The sinking of fecal pellets provides an effective vector for the transfer and sequestration of particulate organic carbon in the sea. Mariculture activities are extensively practiced along the coastline of China. We hypothesized that seaweed and shellfish mariculture would differentially affect zooplankton community structure and fecal carbon flux due to differences in habitat provision and food source. Aimed to test this hypothesis, surveys were carried out in different mariculture areas around Nan'ao Island in the South China Sea from March to June 2023 during seaweed <em>Gracilaris lemaneiformis</em> cultivation. A total of 36 zooplankton species were identified, including 27 copepod species. Zooplankton abundance ranged from 500 to 2760 ind. m<sup>−3</sup>, with the highest abundance observed in the <em>G.lemaneiformis</em> cultivation area (<em>P</em> &lt; 0.05). Furthermore, the Shannon-Wiener diversity index of the zooplankton community in the <em>G.lemaneiformis</em> area surpassed that of the shellfish and control areas (<em>P</em> &lt; 0.05). The abundance of zooplankton fecal pellets fluctuated between 12 and 283 pellets m<sup>−3</sup>, and the fecal pellet carbon flux ranged from 0.004 to 0.976 mg C m<sup>−2</sup> d<sup>−1</sup>. The fecal pellet abundance and carbon flux of zooplankton peaked in the <em>G.lemaneiformis</em> cultivation area (<em>P</em> &lt; 0.05). Results showed mariculture activities affect zooplankton community structure and their fecal pellet carbon flux; the large-scale cultivation of <em>G.lemaneiformis</em> enhances zooplankton diversity and effectively increases the carbon flux of fecal pellets in the coastal waters. These findings could provide new management strategies for mariculture environments with increasing anthropogenic stressors in the Anthropocene Epoch.</div></div>","PeriodicalId":56021,"journal":{"name":"Anthropocene","volume":"51 ","pages":"Article 100491"},"PeriodicalIF":3.9,"publicationDate":"2025-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144864719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Different responses of cyanobacterial communities to climate change and anthropogenic activities revealed by the 500-year sedimentary record of Lake Daihai 代海500年沉积记录揭示的蓝藻群落对气候变化和人类活动的不同响应
IF 3.9 2区 地球科学
Anthropocene Pub Date : 2025-08-13 DOI: 10.1016/j.ancene.2025.100490
Jing Wang , Hai Xu , Jianghu Lan , Kang’en Zhou , Yunping Song , Jin Zhang , Meiling Yang , Baoli Wang
{"title":"Different responses of cyanobacterial communities to climate change and anthropogenic activities revealed by the 500-year sedimentary record of Lake Daihai","authors":"Jing Wang ,&nbsp;Hai Xu ,&nbsp;Jianghu Lan ,&nbsp;Kang’en Zhou ,&nbsp;Yunping Song ,&nbsp;Jin Zhang ,&nbsp;Meiling Yang ,&nbsp;Baoli Wang","doi":"10.1016/j.ancene.2025.100490","DOIUrl":"10.1016/j.ancene.2025.100490","url":null,"abstract":"<div><div>Different responses of lake microbial assemblages to climate changes and human activities are not well understood due to the scarcity of long-term biodiversity records. In this study, an approach of paleolimnology and metagenomic sequencing of sedimentary ancient DNA was combinedly used to investigate environmental changes, lake primary productivity, and cyanobacterial community succession over the last ∼500 years in Lake Daihai, northern China. The results show a different response of cyanobacterial communities to climate change and anthropogenic activities on different timescales. Lake primary productivity, biodiversity, and trophic status were in a generally natural state and were mainly controlled by temperature and precipitation before ∼1850 CE, but were clearly affected by human activities thereafter. Overall microbial diversity values gradually increased after ∼1850 CE, and ordination analysis further indicates that the present community is substantially dissimilar to that observed before ∼1850 CE. The structure of cyanobacterial communities was relatively stable prior to ∼1850 CE, followed by prominent decadal scale fluctuations that were broadly synchronous with the sedimentary organic matter molecular compositions. These molecular proxies reveal that anthropogenic forcing, rather than climate, may be the primary controls of cyanobacterial communities over the past one more century. Enhanced land-use change and cropland runoff, and increased discharges of industrial wastewater and human sewage are likely the main factors driving changes in lake primary productivity and cyanobacterial community composition. Our finding highlights the sensitive responses of lake ecosystem to anthropogenic disturbance in the monsoon marginal zone, and proper exogenous nutrient control (e.g., thresholds for agricultural runoff) is necessary to maintain the sustainability of the regional aquatic ecosystems.</div></div>","PeriodicalId":56021,"journal":{"name":"Anthropocene","volume":"51 ","pages":"Article 100490"},"PeriodicalIF":3.9,"publicationDate":"2025-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144864720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Uncovering the co-evolution of land use change and ecosystem services in Shandong of China 山东省土地利用变化与生态系统服务的协同演化
IF 3.9 2区 地球科学
Anthropocene Pub Date : 2025-08-09 DOI: 10.1016/j.ancene.2025.100488
Zhengxin Zhang, Xiaogang Shi, Jiren Xu, Md Sarwar Hossain
{"title":"Uncovering the co-evolution of land use change and ecosystem services in Shandong of China","authors":"Zhengxin Zhang,&nbsp;Xiaogang Shi,&nbsp;Jiren Xu,&nbsp;Md Sarwar Hossain","doi":"10.1016/j.ancene.2025.100488","DOIUrl":"10.1016/j.ancene.2025.100488","url":null,"abstract":"<div><div>Many studies have explored the relationships between ecosystem services (ES) and land use/ land cover (LULC) changes but understanding the synergistic evolution of their complex socio-ecological dynamics is still limited in China. This study provides a comprehensive time-series analysis of ES and LULC spanning 1950–2022 in Shandong of China, offering valuable insights into the sustainability of social-ecological systems. We derived evolutionary trends by analysing satellite map data, official government data, and literature data; developing a conceptual model of causal feedback of LULC and ES by the Granger causality test; analysed the relationships of ES with LULC and GDP using the Environmental Kuznets Curve (EKC) model and sequential principal component analysis. The trend analysis reveals that urban sprawl is increasingly encroaching on most of the natural land, especially agricultural land, posing a serious threat to food security. The EKC modelling demonstrates that economic growth continues to fuel urban expansion without reaching a tipping point. Our conceptual model suggests that urbanization increases the demand for provisioning services, deteriorating key regulating services, in a synergistic relationship with tourism. Wetland loss further exacerbates annual precipitation decline, triggering negative feedback with temperature and drought, leading to the degradation of shrubs and grasslands. Ultimately, these factors collectively undermine regional ecosystem resilience. Our results suggest that the socio-ecological systems in Shandong experienced weakening connectivity and heightened vulnerability between 1980 and 2022, indicating a shift toward functional disturbance and possible reorganization, with the possibility of approaching tipping point. Our findings provide valuable insights for policymakers in China and other global mountains for land management and ecosystem restoration to avoid the collapse of social-ecological systems.</div></div>","PeriodicalId":56021,"journal":{"name":"Anthropocene","volume":"51 ","pages":"Article 100488"},"PeriodicalIF":3.9,"publicationDate":"2025-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144841316","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Sediment magnetism records of anthropogenic impact on a typical alpine lake in southeastern Tibetan Plateau 青藏高原东南部典型高寒湖泊人为影响的沉积物磁学记录
IF 3.9 2区 地球科学
Anthropocene Pub Date : 2025-08-05 DOI: 10.1016/j.ancene.2025.100487
Yuhan Li , Wenshan Yang , Huan Fu , Yongdong Zhang , Tingping Ouyang
{"title":"Sediment magnetism records of anthropogenic impact on a typical alpine lake in southeastern Tibetan Plateau","authors":"Yuhan Li ,&nbsp;Wenshan Yang ,&nbsp;Huan Fu ,&nbsp;Yongdong Zhang ,&nbsp;Tingping Ouyang","doi":"10.1016/j.ancene.2025.100487","DOIUrl":"10.1016/j.ancene.2025.100487","url":null,"abstract":"<div><div>Alpine lakes provide a valuable opportunity for studying anthropogenic airborne contamination due to the absence of direct human activities in their catchments. However, to date, few in-depth investigations have employed magnetic proxies to assess anthropogenic impacts on these lakes. In this study, we analyzed the magnetic characteristics of a dated sediment core from Lake Jiren, a typical alpine lake in the southeastern margin of the Tibetan Plateau, to elucidate when, how, and to what extent anthropogenic contamination has impacted the lake basin. The results indicate that the magnetic minerals in the core are mainly composed of magnetite, with hematite accounting for a small percentage. In sediments deposited prior to ca. 1933 AD, low values of magnetic concentration-dependent proxies (χ<sub>lf</sub>, χ<sub>ARM</sub>, and SIRM) and relatively abundant detrital hematite reflect a dominant input of locally derived magnetic minerals to the lake, implying a relatively pristine environment with minimal anthropogenic impact. The relatively low χ<sub>ARM</sub>/χ<sub>lf</sub> and χ<sub>ARM</sub>/SIRM ratios indicate coarser magnetic particles, likely resulting from the weathering of the bedrock in the basin. For sediments deposited after ca. 1947 AD, the values of χ<sub>ARM</sub>/χ<sub>lf</sub> and χ<sub>ARM</sub>/SIRM ratios increased, pointing to a finer size of the magnetic particles. This change, along with the marked increase in SIRM and S<sub>-300</sub>, suggests an important shift in the source of magnetic particles, indicating a notable anthropogenic contribution—most likely from airborne deposition of anthropogenic magnetic materials over the lake basin, followed by surface runoff to the lake. This transition temporally coincides with large-scale industrial development, such as mining, in southwestern China. A causal relationship is plausible, considering that the magnetic minerals generated by industrial activities have a high potential to be transported to adjacent alpine lakes through atmospheric processes. This study demonstrates that magnetic proxies, which can be acquired rapidly, non-destructively, and cost-effectively, are highly sensitive indicators of anthropogenic airborne contamination in alpine lakes.</div></div>","PeriodicalId":56021,"journal":{"name":"Anthropocene","volume":"51 ","pages":"Article 100487"},"PeriodicalIF":3.9,"publicationDate":"2025-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144779544","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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