Isotopes in Environmental and Health Studies最新文献

{"title":"Radon measurements in soils and building materials of Kashmir.","authors":"Sobia Riaz, Misbah Javed, Muhammad Rashad Khan, Muhammad Khawaja Rafique Mir, Carlo Sabbarese","doi":"10.1080/10256016.2025.2492102","DOIUrl":"10.1080/10256016.2025.2492102","url":null,"abstract":"<p><p>In this study, ²²²Rn and ²²⁶Ra activity concentration, annual effective dose and radon exhalation rate were measured in samples of building materials and soils collected from the city of Rawalakot in Azad Kashmir. The samples were measured using the passive technique with CR-39 detectors. ²²²Rn activity concentration in sand, brick, blocks, soil and tiles varies from 259 to 401, 230-464, 273-421, 256-523 and 267-438 Bq/m³, respectively. The annual effective dose for people living in built environments with sand, bricks, blocks, soil and tiles ranges from 4.0-6.32, 3.62-7.31, 4.30-6.63, 4.03-8.24 and 3.36-6.90 mSv/y, respectively, and the mean values are 5.16, 5.31, 5.31, 5.56 and 5.26 mSv/y. The radon activity concentration results were compared with the limits set by the Health Protection Agency UK (200 Bq/m³), US-EPA (148 Bq/m³) and WHO (100 Bq/m³). Some samples exceeded these recommended limits, indicating a potential health risk.</p>","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":" ","pages":"392-401"},"PeriodicalIF":1.1,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144010205","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Assessment of soil radioactivity and associated health risks in the Haripur gas field, Bangladesh.","authors":"M M Mahfuz Siraz, Musfik R Fahim, Zulfiqar Hasan Khan, Mohammad Shafiqul Alam, Araf Mahmud, Md Bazlar Rashid, Md Shihab Uddin Shuvo, Mahbuba Begum, Jannatul Mawa Trishna, Mayeen Uddin Khandaker, Shams A M Issa, Hamid Osman, Selina Yeasmin","doi":"10.1080/10256016.2025.2501051","DOIUrl":"10.1080/10256016.2025.2501051","url":null,"abstract":"<p><p>Assessing soil radioactivity and associated risks in areas surrounding gas fields is essential due to potential natural radionuclide accumulation during extraction activities. This study investigates the radioactivity levels in surface soil from the Haripur gas field. 21 soil samples were analyzed using a high purity germanium (HPGe) detector. The activity concentrations of ²²⁶Ra, ²³²Th, and ⁴⁰K in the soil samples were found to range between 11-19, 20-38, and 280-500 Bq kg^-1, respectively. All ²²⁶Ra values and the majority of ²³²Th and ⁴⁰K values fell within the global average levels for soil, which are 35, 30, and 400 Bq kg^-1, respectively. Radiation hazard indices were found to be below the internationally accepted safety limits set by organizations such as the United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) and the International Commission on Radiological Protection (ICRP), indicating that the soil poses no significant radiological risks for construction and agricultural applications. This research offers essential baseline data on soil radioactivity at the Haripur gas field, supporting public health, environmental protection, and regulatory compliance efforts.</p>","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":" ","pages":"371-391"},"PeriodicalIF":1.1,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144101875","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Temporal characteristics of stable isotopes of oxygen (¹⁸O) and hydrogen (²H) at Senai, Johor, Malaysia.","authors":"Ninu Krishnan Modon Valappil, Yusri Yusup, Punyawi Jamjareegulgarn, Vijith Hamza","doi":"10.1080/10256016.2025.2492861","DOIUrl":"10.1080/10256016.2025.2492861","url":null,"abstract":"<p><p>The present research aimed to characterize the temporal variation in the compositions of stable isotopes (<math><mrow><mi>δ</mi><mi>D</mi></mrow></math> and δ¹⁸O) at Senai in Johor, Malaysia. Long-term monthly data collected from Malaysian Nuclear Agency and the International Atomic Energy Agency (IAEA)/World Meteorological Organisation (WMO), Global Network for Isotopic Precipitation (GNIP) for a period of 2013-2021 were considered. The isotopic composition was evaluated monthly, seasonally and annually by taking into account the amount of precipitation (rainfall), temperature and relative humidity. The δD and δ¹⁸O values showed enriched values in the months of January, February and March and depleted values in November and December, respectively. Considering the seasonal characteristics at Senai site, it was found that the precipitation during the northeast monsoon (NEM) showed a slight enrichment in isotopic compositions as compared to the rainfall during the southwest monsoon (SWM). The primary sources of moisture were identified through the modelling of HYSPLIT-based backward trajectories, which indicated that the Pacific Ocean, the South China Sea (NEM season) and the Indian Ocean (SWM season) play significant roles as moisture contributors. Additionally, landmasses in the western Pacific and northern continental regions also supplied moisture that influenced the composition of stable isotopes in precipitation in Senai. The findings of this study contribute to a deeper comprehension of the hydrometeorological processes at play in the study area, which affect the fluctuations of compositions of stable isotopes in precipitation within the region. Further, a more comprehensive investigation of δ¹⁸O and δD isotopes is deemed crucial as essential climate response variables. This research will enhance our understanding of the hydrological cycle and improve predictions regarding the impacts of future climate change and alterations in ecosystems.</p>","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":" ","pages":"433-454"},"PeriodicalIF":1.1,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143971658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Radiological hazard assessment of radon gas in vegetable and fruit samples using solid state nuclear track detectors.","authors":"Hiwa Mohammad Qadr, Alla Ahmed Muhamad Amin","doi":"10.1080/10256016.2025.2495336","DOIUrl":"10.1080/10256016.2025.2495336","url":null,"abstract":"<p><p>This study examines the concentrations of radon, radium, and uranium, along with the annual effective dose and excess lifetime cancer risk due to ingestion of radon in vegetable and fruit samples collected randomly from eleven sites in the Ranya district, Iraq. The solid state nuclear track detector CR-39 was used to monitor radon levels and their progeny. The findings demonstrate that the average concentrations of radon, radium, and uranium in vegetable and fruit samples were 91.05 Bq m^-3, 0.26 Bq kg^-1, and 0.06 ppm, respectively. These results were lower than the global average recommended by ICRP and UNSCEAR. Additionally, the average values of annual effective dose and excess lifetime cancer risk were 0.02 µSv y^-1 and 0.08 × 10^-6, respectively. These results comply with internationally recommended safe levels for human consumption. Further research is recommended to evaluate the transfer of radionuclides from soil to edible crops.</p>","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":" ","pages":"339-350"},"PeriodicalIF":1.1,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144035277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Resolving challenges in the development of a protocol for <i>δ</i>¹⁸O determinations on tree-ring cellulose.","authors":"John du Plessis, Dipayan Paul, Margot Kuitems, Anita Aerts-Bijma, Neil J Loader, Harro A J Meijer, Michael Dee","doi":"10.1080/10256016.2025.2529213","DOIUrl":"https://doi.org/10.1080/10256016.2025.2529213","url":null,"abstract":"<p><p>Tree rings can provide annual records of environmental and climatic conditions. These records can be obtained through the physical characteristics of tree rings or the isotopic composition of their structural elements. Oxygen isotope chronologies are created by objectively combining data from trees. The diachronic patterns observed in the <i>δ</i>¹⁸O of the tree-ring cellulose represent tree-environment interactions. The abundance of ¹⁸O in tree-ring cellulose is closely linked to hydroclimate, and is influenced by source water <i>δ</i>¹⁸O and atmospheric humidity. Long sequences of annually resolved tree-ring <i>δ</i>¹⁸O values have been used, to good effect, in the dating of archaeological timbers and as proxies in the reconstruction of climatic variables. In this research we have established a working methodology for producing and measuring <i>δ</i>¹⁸O in tree-ring <i>α</i>-cellulose at the University of Groningen. We have demonstrated an average precision of approximately 0<i>.</i>2 ‰ under a variety of conditions, which exceeds the expected performance of continuous flow IRMS techniques. Difficulties were encountered during the calibration of tree-ring cellulose <i>δ</i>¹⁸O determinations using non-cellulose, organic reference materials. A difference in pyrolysis behaviour or one, or more compromised materials, resulted in poor agreement between measured and expected <i>δ</i>¹⁸O values on cellulose standards. This opens the possibility for further study. Analysis of cellulose standards alongside water reference materials and an independent quality control standard proved successful, resulting in a number of cellulose standards being accurately placed on the VSMOW-SLAP scale, including the intercomparison and <i>de facto</i> reference material IAEA-C3 holocellulose.</p>","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":" ","pages":"1-18"},"PeriodicalIF":1.4,"publicationDate":"2025-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144760073","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Nitrate sources and migration in rural karst aquifers: a case study in Pingyin karst catchment, north China.","authors":"Chen Sheng, Di Wu, Dalu Yu, Yangyang Min, Baohui Huang, Mingguo Wang, Junru Gao, Guiyao Xiong, Chunhui Zhang, Xianzhang Dang","doi":"10.1080/10256016.2025.2522410","DOIUrl":"https://doi.org/10.1080/10256016.2025.2522410","url":null,"abstract":"<p><p>Due to the dramatic rise in global population and intensified agricultural activities, groundwater environments are increasingly threatened by nitrate pollution. To elucidate the sources and transformation processes of nitrate contamination in rural karst groundwater, this study selected the Pingyin karst catchment in Shandong Province, northern China, as the research area. This study employed a combination of isotopic analyses (δ¹⁵N-NO₃, δ¹⁸O-NO₃, δ²H-H₂O, and δ¹⁸O-H₂O) and hydrochemical data to investigate karst groundwater, pore groundwater, and Yellow River water. In the study area, nitrate concentration in karst groundwater samples ranged from 11 to 294 mg/L, with 80 % of samples exceeding the WHO safe drinking water limit of 50 mg/L for NO₃. Stable isotopic results (δ²H-H₂O, δ¹⁸O-H₂O) show meteoric precipitation is the main source of groundwater recharge. The ¹⁸O-Cl relationship bubble diagram revealed that nitrate contamination primarily originated from anthropogenic sources. Furthermore, both hydrochemical (e.g. TIN vs. Cl, NO₃/Cl vs. Cl) and isotopic (δ¹⁵N-NO₃ vs. δ¹⁸O-NO₃) evidence indicate that untreated human and livestock wastewater is the primary contributor to elevated nitrate levels in groundwater. Isotopic analysis also revealed that nitrification is the dominant biogeochemical process occurring in groundwater. The MixSIAR model further estimated source contributions as follows: manure and sewage (49.92 %), soil nitrate (39.43 %), chemical fertilizers (9.19 %), and atmospheric deposition (1.46 %). Finally, based on these findings and considering the environmental conditions of the study area, environmental protection strategies to prevent nitrate pollution were proposed. These findings serve as a valuable reference for promoting the sustainable use and pollution control of karst groundwater in rural areas.</p>","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":" ","pages":"1-18"},"PeriodicalIF":1.1,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144553586","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Dynamics of stable isotopes in precipitation, soil water and groundwater at a Norway spruce and a European beech site at Solling, Germany.","authors":"Paul Koeniger, Christoph Neukum, Susanne Stadler, Ulla Noell, John D Marshall, Bernd Ahrends, Stefan Fleck, Henning Meesenburg","doi":"10.1080/10256016.2025.2509756","DOIUrl":"https://doi.org/10.1080/10256016.2025.2509756","url":null,"abstract":"<p><p>Ongoing changes in climate alter the role of forests in the hydrologic cycle, influencing water transmission to springs and aquifers. Here we compared two forests dominated by either beech or spruce on broadly similar soils (Dystric Cambisols); we monitored the passage of natural-abundance stable isotope signals through the upper meter of soil and onward to springs. The isotopic data were similar between the sites at every time step and at every stage of transit, except at 90-100 cm depth, where the isotopic signal of the beech forest was delayed by approximately 1 month. The data were used in a lumped parameter dispersion model so that physical parameters describing transport could be determined and compared. Modeled residence times were similar between the two forests (123 (sd = 32) vs. 152 (25) days), with high precision to depths of 40 cm. According to the model, rainfall reached 1 meter depth in 200 (8) days under the spruce stand, but required 228 (37) days in the beech. The measurements below the rooting zone (90-100 cm) play a critical role in detecting site/species differences and in prediction of residence times.</p>","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":" ","pages":"1-19"},"PeriodicalIF":1.1,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144553577","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"²²⁶Ra and ²²²Rn activity concentrations and associated effective doses for different age groups in spring water of Harnai, Balochistan.","authors":"Nisar Ahmad, Muhammad Bakhsh","doi":"10.1080/10256016.2025.2511138","DOIUrl":"https://doi.org/10.1080/10256016.2025.2511138","url":null,"abstract":"<p><p>In Harnai, Balochistan, Pakistan, the levels of ²²⁶Ra and ²²²Rn were measured with a high purity germenium (HPGe) detector and a RAD7 detector, respectively, in drinking water. The concentration of ²²²Rn in the spring water under investigation ranged from 2.8 ± 0.59-8.5 ± 0.80 Bq L^-1 with an average of 4.96 ± 0.7 Bq L^-1, while the concentration of ²²⁶Ra varied from 1.36 ± 0.55-6.8 ± 0.99 mBq L^-1 with an average of 3.54 ± 0.74 mBq L^-1. All concentrations of ²²²Rn and ²²⁶Ra were found to be below the global averages of 11.1 Bq L^-1 and 555 mBq L^-1, respectively. There was a positive connection (R² = 0.9398) between the concentrations of ²²²Rn and ²²⁶Ra. There are very weak associations between phyco-chemical characteristics and ²²²Rn and ²²⁶Ra. For various age groups, the estimated annual effective dosages from ingesting of ²²⁶Ra and ²²²Rn were determined to be below the advised threshold of 0.1 mSv y^-1. Based on the results, it has been concluded that the population in the research region is not significantly affected by ²²⁶Ra and ²²²Rn in spring water.</p>","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":" ","pages":"1-11"},"PeriodicalIF":1.1,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144496675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"First assessment of radiological impacts near the Rampal 1320 MW thermal power plant adjacent to the UNESCO world heritage site of Sundarbans, Bangladesh.","authors":"M M Mahfuz Siraz, S Nafis Haider, Araf Mahmud, Mohammad Shafiqul Alam, Md Bazlar Rashid, Mayeen Uddin Khandaker, Hamid Osman, Selina Yeasmin","doi":"10.1080/10256016.2025.2512859","DOIUrl":"10.1080/10256016.2025.2512859","url":null,"abstract":"<p><p>Environmental radioactivity is significantly elevated by coal combustion, posing risks to communities living near coal-fired thermal power plants (CFTPPs). This study presents the first comprehensive assessment of radiological impacts around the Rampal Thermal Power Plant, a 1320 MW facility located in Rampal Upazila, near the UNESCO World Heritage site of Sundarbans, Bangladesh. Thirty soil samples were systematically collected from distances of 100, 500, 1000, 2000, and 3000 m from the power plant. The activity concentrations of ²²⁶Ra, ²³²Th, and ⁴⁰K in soil ranged from 17-31, 29-51, and 350-670 Bq kg^-1, respectively, with a few samples exceeding the population-weighted global averages for ²²⁶Ra (32 Bq kg^-1) and ²³²Th (45 Bq kg^-1), and almost all the samples exceeding the average for ⁴⁰K (420 Bq kg^-1). The elevated levels of ²²⁶Ra, ²³²Th, and ⁴⁰K in the soil samples can be attributed to several interconnected factors, including the presence of thorium-rich minerals such as monazite and zircon, granitic geological formations, and anthropogenic inputs like bottom ash discharge from the plant and coal combustion byproducts. While the radium equivalent activity and hazard indices generally fell within safety limits, the higher outdoor and indoor absorbed dose rates, effective doses, and increased lifetime cancer risk raised alarms about potential health threats for nearby residents over time. Moreover, the long-term radiological effects on the Sundarbans ecosystem could disturb its fragile balance, impacting both biodiversity and the local communities that rely on its resources. These results highlight the necessity for further evaluations and remediation efforts to ensure the safe use of these soils in agricultural and construction activities. This research also seeks to develop a radiological distribution map, which will provide crucial baseline data for the forthcoming Rooppur Nuclear Power Plant.</p>","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":" ","pages":"1-23"},"PeriodicalIF":1.4,"publicationDate":"2025-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144368861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Exploring stable isotope patterns in monthly precipitation across Southeast Asia using contemporary deep learning models and SHapley Additive exPlanations (SHAP) techniques.","authors":"Mojtaba Heydarizad, Nathsuda Pumijumnong, Masoud Minaei, Pouya Salari, Rogert Sorí, Hamid Ghalibaf Mohammadabadi","doi":"10.1080/10256016.2025.2508811","DOIUrl":"https://doi.org/10.1080/10256016.2025.2508811","url":null,"abstract":"<p><p>Stable isotopes are crucial for understanding water cycles and climate dynamics, particularly in tropical regions. However, establishing and maintaining precipitation sampling stations in Southeast Asia is challenging due to high costs and logistical issues. Consequently, many areas in this region have limited or no sampling stations with adequate stable isotope data. To address this problem, developing models that simulate stable isotope contents using machine learning (ML) techniques, especially deep learning, is a promising solution. In this study, the influence of large-scale climate modes (teleconnection indices) and local meteorological parameters on the stable isotope contents of precipitation was examined across six key stations in Southeast Asia, including Bangkok, Kuala Lumpur, Jakarta, Kota Bharu, Jayapura, and Singapore. A deep neural network (DNN) model was applied for simulation, and its performance was compared with a partial least squares regression (PLSR) model using various evaluation metrics. The DNN consistently demonstrated superior accuracy across all studied stations, highlighting the efficacy of DNNs, in accurately simulating stable isotope contents in tropical precipitation. The importance ranking derived from the SHapley Additive exPlanations (SHAP) technique aligns perfectly with the results obtained from the DNN importance function. In addition, the SHAP summary plot highlights the contributions of key features, such as precipitation and potential evaporation, to the model's predictions. The dependence plots further illustrate the relationship between these features and the predicted response, revealing nonlinear interactions that influence model behaviour. This research provides new insights into the complex interactions between large-scale climate drivers and local weather patterns, advancing the use of ML for isotope-based climate studies. The techniques used in this study offer a framework for applying ML to isotope analysis in tropical climates and can be extended to similar regions worldwide.</p>","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":" ","pages":"1-22"},"PeriodicalIF":1.1,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144302078","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}