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Fragmentation Trajectories as a Review of Existing and Proposed Single-valued Fragmentation Indices 碎片化轨迹作为现有和新提出的单值碎片化指数的综述
IF 0.4 4区 环境科学与生态学 Q4 Environmental Science Pub Date : 2021-12-01 DOI: 10.47125/jesam/2021_2/04
D. G. Vergara, R. Lasco, R. Walker, Antonio Alcantara, R. Ancog, Patricia Ann Sanchez, C. Tiburan
Two related single-valued landscape fragmentation indices D and F are proposed, based on patch aggregation, shape complexity, and percent of the focal pixels on the landscape, and are computed using Fragstats metrics on a colonization landscape continuously fragmented over 36 years. The same was done for two existing single-valued fragmentation indices, i.e., the Matheron index based solely on normalized unlike joins, and the Normalized Hypsometric Curve (NHMC) index from GUIDOS Toolbox. All were plotted chronologically, and also against percent non-forest (%nf) of the landscape, and the trajectories were compared for behavior. The NHMC index starts high even if deforestation is low, and continues increasing even further as deforestation continues, while the other three indices all start close to zero and increase gradually. F mimics D very closely, and the Matheron index only behaves differently from F and D at the end of the data range. The deviation may be due to patch aggregation, which the Matheron index does not consider. An accepted single-valued fragmentation index computed from Fragstats landscape metrices could allow for cross-study comparisons relating fragmentation with any other attribute on or of the landscape, hopefully advancing the science of fragmentation in landscape ecology as cross-study generalizations would now be possible.
基于斑块聚集、形状复杂性和景观上焦点像素的百分比,提出了两个相关的单值景观碎片化指数D和F,并使用Fragstats指标对36年来持续碎片化的殖民化景观进行了计算。对两个现有的单值碎片索引也进行了同样的处理,即仅基于归一化不同联接的Matheron索引和GUIDOS工具箱中的归一化催眠曲线(NHMC)索引。所有这些都是按时间顺序绘制的,还与景观的非森林百分比(%nf)进行了对比,并对轨迹进行了行为比较。即使森林砍伐率很低,NHMC指数也会从高开始,并随着森林砍伐的持续而进一步增加,而其他三个指数都从接近零开始,并逐渐增加。F非常接近D,并且Matheron索引的行为仅与数据范围末尾的F和D不同。偏差可能是由于斑块聚集引起的,而Matheron指数没有考虑这一点。根据Fragstats景观度量计算出的公认的单值破碎化指数,可以将破碎化与景观上或景观的任何其他属性进行交叉研究比较,有望推进景观生态学中的破碎化科学,因为交叉研究的推广现在是可能的。
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引用次数: 0
Isolation and Characterization of Polysaccharide- Degrading Microbes from Compost Samples 堆肥中多糖降解微生物的分离与特性研究
IF 0.4 4区 环境科学与生态学 Q4 Environmental Science Pub Date : 2021-12-01 DOI: 10.47125/jesam/2021_2/02
N. Munir, Kanza Malik, R. Bashir, I. Altaf, S. Naz
This study isolated and identified novel microbial polysaccharide degrading species involved in composting process. Bacteria were isolated from different composting samples from Lahore Compost Private Limited, Lahore, Pakistan. Physico-chemical analysis of compost samples made from municipal waste were collected at 15-day interval during the composting process. A total of 55 bacteria were isolated and identified using morphological and biochemical characteristics. Out of 55 isolates, 26 mesophilic and 14 thermophilic had cellulose degrading potential. Out of 26 mesophyllic bacterial isolates, 20 were found cellulolytic. The isolated bacteria and fungi were identified morphologically and biochemically. The highest potential to degrade cellulose was recorded from four Bacillus strains. Molecular characterization of potential cellulolytic bacteria by 16S rRNA was performed. Bacillus sp. were found as the most prevalent cellulolytic bacteria in composting process. Fungi were also isolated and characterized morphologically and microscopically following techniques. The potential cellulolytic fungal isolates were Aspergillus fumigatus, Mucor sp., Saccharomyces sp., and Aspergillus niger. The results of this study would be helpful in highlighting the potential role of different microbes involved in enhancement of the composting process. These microbes can be used for the preparation of microbial inoculum based on their polysaccharide cellulose, bacteria, composting degrading ability.
本研究分离并鉴定了参与堆肥过程的新型微生物多糖降解种。从巴基斯坦拉合尔的拉合尔堆肥私人有限公司的不同堆肥样品中分离出细菌。在堆肥过程中,每隔15天收集一次城市垃圾堆肥样品的理化分析。通过形态学和生化特征对55株细菌进行了分离鉴定。55株菌株中,26株嗜中温菌和14株嗜热菌具有纤维素降解潜力。在分离的26株叶肉细菌中,有20株具有纤维素水解性。对分离的细菌和真菌进行了形态和生化鉴定。4株芽孢杆菌对纤维素的降解潜力最高。利用16S rRNA对潜在的纤维素水解菌进行分子表征。芽孢杆菌是堆肥过程中最常见的纤维素分解菌。真菌也被分离出来,并在形态学和显微镜下进行了表征。潜在的纤维素分解真菌分离株为烟曲霉、毛霉、酵母菌和黑曲霉。本研究的结果将有助于突出不同微生物在提高堆肥过程中的潜在作用。这些微生物基于其多糖、纤维素、细菌、堆肥降解能力,可用于制备微生物接种物。
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引用次数: 1
Melanomacrophage Centers in Nile Tilapia (Oreochromis niloticus L.) as Biomarker for Carbamate Exposure 尼罗罗非鱼(Oreochromis niloticus L.)黑色素巨噬细胞中心作为氨基甲酸酯暴露的生物标志物
IF 0.4 4区 环境科学与生态学 Q4 Environmental Science Pub Date : 2021-06-30 DOI: 10.47125/jesam/2021_1/03
Jefferson Marteja, R. Modina
Melanomacrophage centers are aggregates of pigment-containing cells found in the animal’s hematopoietic tissues. Changes in its characteristics have been used to assess the influence of pesticide exposure, and as tools for potential monitoring for fish and environmental health. This study aimed to evaluate the pesticide-induced hepatic and splenic melanomacrophage center responses in Nile tilapia (Oreochromis niloticus L.) following exposure to fenobucarb in varying lengths of exposure. Five test groups were exposed to constant dose of fenobucarb at 0.08 mg L-1at different periods (0, 7, 14, 21, and 28 days). Fenobucarb only induced significant changes in the splenic melanomacrophage centers. Splenic melanomacrophage centers significantly increased in number in response to the increasing lengths of exposure. Increasing trend of size and cover was also observed, however, significant difference was only detected at 28 days exposure period. Significant difference in hemosiderin and lipofuscin pigments was also detected at 28 days exposure which suggests tissue destruction after prolonged exposure. This study confirms the potential of melanomacrophage centers as a sensitive biomarker for fenobucarb exposure indicated by the changes in its characteristics, particularly in the spleen.
黑色素巨噬细胞中心是在动物的造血组织中发现的含有色素的细胞的聚集体。其特性的变化已被用于评估农药暴露的影响,并作为潜在的鱼类和环境健康监测工具。本研究旨在评估尼罗罗非鱼(Oreochromis niloticus L.)在不同时间暴露于非诺布后,农药诱导的肝脏和脾脏黑巨噬细胞中心反应。五个试验组在不同时期(0、7、14、21和28天)暴露于0.08 mg L-1的恒定剂量的非诺布卡。非诺布卡仅诱导脾脏黑巨噬细胞中心发生显著变化。脾脏黑巨噬细胞中心的数量随着暴露时间的增加而显著增加。大小和覆盖率也有增加的趋势,但只有在28天的暴露期才发现显著差异。在暴露28天后,还检测到含铁血黄素和脂褐素色素的显著差异,这表明长期暴露后组织破坏。这项研究通过其特征的变化,特别是在脾脏中的变化,证实了黑巨噬细胞中心作为非诺布卡巴暴露的敏感生物标志物的潜力。
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引用次数: 0
Social Acceptability of the Bioremediation Technology for the Rehabilitation of an Abandoned Mined-Out Area in Mogpog, Marinduque, Philippines 菲律宾马林杜克Mogpog废弃采空区生物修复技术的社会接受度
IF 0.4 4区 环境科学与生态学 Q4 Environmental Science Pub Date : 2021-06-30 DOI: 10.47125/jesam/2021_1/08
Sofia A. Alaira, C. Padilla, Evangeline Alcantara, N. Aggangan
Rehabilitation of mined-out areas poses great challenge because nutrients are depleted and conditions are not conducive for the conditions necessary for the growth and survival of plants. Proper combination of mycorrhizal fungi, nitrogen-fixing bacteria, compost, and lime to support the growth of trees in the poor soil has been discovered by the University of the Philippines Los Baños National Institute of Microbiology and Biotechnology. Having established a protocol using this formulation, a plant survival rate of 95% was achieved in a bioremediation project implemented by the Institute in a mined-out area in Capayang, Mogpog, Marinduque, Philippines. The social acceptance and adoption of this rehabilitation strategy was determined through a survey interview in the study area with the use of questionnaire. Six factors and nine variables were considered in the assessment. The bioremediation technology was acceptable to the community as indicated by the high percentage of respondents who gave an overall positive response (90%) and who were willing to adopt and recommend it for implementation in other mined-out areas (90%). Binary logistic regression showed that income and distance of residence from the rehabilitation site significantly influenced the respondents’ decision to accept the technology. Future bioremediation initiatives should also consider the participation and acceptance of stakeholders to ensure sustainability. Indigenous and endemic planting materials should be used in rehabiliation.
采空区的恢复是一个巨大的挑战,因为营养物质已经耗尽,而且条件不利于植物生长和生存所需的条件。菲律宾洛斯巴尼奥斯大学国家微生物和生物技术研究所发现,菌根真菌、固氮细菌、堆肥和石灰的适当组合可以支持树木在贫瘠的土壤中生长。在使用该配方制定了一项方案后,该研究所在菲律宾Marinduque Mogpog Capayang的一个雷区实施的生物修复项目中,植物存活率达到了95%。通过在研究区域使用问卷进行调查访谈,确定了社会对这种康复策略的接受和采用情况。评估中考虑了六个因素和九个变量。生物修复技术为社区所接受,总体上给予积极回应的受访者比例很高(90%),愿意采用并建议在其他雷区实施生物修复技术(90%)。二元逻辑回归显示,收入和离康复地点的居住距离显著影响受访者接受该技术的决定。未来的生物修复举措还应考虑利益攸关方的参与和接受,以确保可持续性。恢复工作应使用当地和地方性种植材料。
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引用次数: 2
Water, Sanitation and Hygiene Practices in the Philippines: Meeting National and Global Targets at the Local Level 菲律宾的水、环境卫生和个人卫生习惯:在地方一级实现国家和全球目标
IF 0.4 4区 环境科学与生态学 Q4 Environmental Science Pub Date : 2021-06-30 DOI: 10.47125/jesam/2021_1/01
Victorio B. Molina, Olivia T. Sison, J. Medina, Carlo R Lumangaya, Cyrille Nahla Ayes, Joseph Aaron S Joe, V. Belizario
As national and global water, sanitation, and hygiene targets have been set and programs have been implemented, the study aimed to assess the attainment of these targets at the local level in selected areas in Davao region, the Philippines. Randomly selected households were assessed for water, sanitation, and hygiene indicators using a modified tool that combined national guidelines and global recommendations. Validated access to improved water source for drinking was below the targets in most barangays, while validated sanitary toilet coverages in all barangays did not meet the targets. Significant difference was observed between validated and reported access to improved water and sanitation services in some barangays. Approximately 87.5% of households had a handwashing facility, but only 51.2% of which had both water and soap available. Achieving the targets is challenged by the gap in monitoring due to a decentralized health system in the Philippines. There is a need to standardize indicators and optimize the tool to allow a comprehensive assessment of water, sanitation, and hygiene practices. This will help generate local data that are in line with national guidelines and global recommendations to enhance policy and to determine priority areas for improved water, sanitation, and hygiene service delivery.
随着国家和全球水、环境卫生和个人卫生目标的制定和项目的实施,本研究旨在评估菲律宾达沃地区选定地区在地方一级实现这些目标的情况。使用一种结合了国家指南和全球建议的改进工具,对随机选择的家庭的水、环境卫生和个人卫生指标进行了评估。在大多数村庄,获得经验证的改善饮用水源的情况低于目标,而所有村庄的经验证的卫生厕所覆盖率均未达到目标。在一些村庄,经证实的获得改善的水和卫生服务的情况与报告的情况存在显著差异。大约87.5%的家庭拥有洗手设施,但其中只有51.2%的家庭同时拥有水和肥皂。由于菲律宾的卫生系统分散,监测方面存在差距,这对实现这些目标构成挑战。有必要使指标标准化并优化工具,以便对水、环境卫生和个人卫生习惯进行全面评估。这将有助于生成符合国家指导方针和全球建议的地方数据,以加强政策并确定改善水、环境卫生和个人卫生服务提供的优先领域。
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引用次数: 1
Comparison of the Health Cost of Organic and Conventional Vegetable Cultivation in Getasan Sub-district, Semarang, Indonesia 印尼三宝垄市Getasan街道有机蔬菜种植与传统蔬菜种植的健康成本比较
IF 0.4 4区 环境科学与生态学 Q4 Environmental Science Pub Date : 2021-06-30 DOI: 10.47125/jesam/2021_1/04
S. Asfawi, A. Probandari, P. Setyono, Hartono
Environmental damage will disrupt the ecosystem to support life. Unsustainable agriculture can be a source of environmental degradation. Conventional agriculture may have an effect on the environment, thus the participation of various parties in sustainable agriculture is needed. Organic agriculture is developed as an environmentally friendly agricultural cultivation with many benefits. Compared to the attention on occupational health, safety and environmental problems, economic motives receive less attention. This study aims to calculate the costs arising from the health impacts of vegetable cultivation. There were 314 respondents interviewed in this study. There were significant differences in the sickness complaints felt by respondents; organic farmer groups have the potential to incur health costs of Rp. 30,333.33, while the conventional group is higher, with a cost of Rp. 103.303.57 (US$ 7.38). Organic farming has a better impact because it uses natural ingredients and is not bad for health. The potential losses arising from health cases also show a high and significant number (p <0.001).
环境破坏会破坏维持生命的生态系统。不可持续的农业可能是环境退化的一个根源。传统农业可能会对环境产生影响,因此需要各方参与可持续农业。有机农业是一种环境友好的农业种植方式,具有多种效益。与对职业健康、安全和环境问题的关注相比,经济动机受到的关注较少。本研究旨在计算蔬菜种植对健康影响所产生的成本。本研究共采访了314名受访者。被调查者对疾病的抱怨有显著差异;有机农民群体的医疗费用可能为30,333.33卢比,而传统农民群体的医疗费用更高,为103.303.57卢比(7.38美元)。有机农业有更好的影响,因为它使用天然成分,对健康无害。健康病例造成的潜在损失也显示出很高且显著的数字(p <0.001)。
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引用次数: 0
Using Rose’ and Manning’s Equations to Spatially Quantify Soil Erosion in Lagawe River Sub- Watershed, Ifugao, Philippines 基于Rose和Manning方程的拉加威河小流域土壤侵蚀空间量化研究
IF 0.4 4区 环境科学与生态学 Q4 Environmental Science Pub Date : 2021-06-30 DOI: 10.47125/jesam/2021_1/05
Victorino A. Bato, E. Paningbatan, V. Ella, A. Alcantara, R. Cruz, P. Sanchez
A dynamic, physical model was created to predict soil erosion of Lagawe River Sub-watershed, a sub-watershed of Magat River Watershed, Philippines. Tipping-bucket rain gauge was installed to gather event-based rainfall data and a water-level recorder was installed on a straight segment of Lagawe River to gather water depth. Sediment samples were taken during rainstorm events and were used to calibrate the model. Manning’s equation was used to calculate surface runoff and stream flow velocity. Rose’ and Freebairn’s Equation was used to calculate sediment mass. Geographic Information System was utilized as a tool for modelling using PCRaster Software. The model estimated a total of 57,905,000 m3 of eroded sediments which was generated during Typhoon Koppu (local name, Lando) in year 2015. A Welch Two Sample t-value of -0.25 and a p-value of 0.81 was achieved on the statistical analysis between the measured sediment yield and the output of the model. Since the p-value is greater than 0.05 (5%), there is no significant difference between the output of the physical dynamic model and the measured value for sediment yield. Likewise, the correlation analysis supports this conclusion with a linearly positive R2 value of 0.74.
建立了一个动态物理模型来预测菲律宾马加特河流域的子流域Lagawe河子流域的土壤侵蚀。安装了翻斗式雨量计以收集基于事件的降雨数据,并在拉加韦河的直线段安装了水位记录仪以收集水深。沉积物样本是在暴雨期间采集的,用于校准模型。曼宁方程用于计算地表径流和水流速度。使用Rose和Freebairn方程计算沉积物质量。使用PCRaster软件将地理信息系统作为建模工具。该模型估计,2015年台风科普(当地名称,兰多)期间共产生57905000 m3的侵蚀沉积物。在测得的产沙量和模型输出之间的统计分析中,Welch双样本t值为-0.25,p值为0.81。由于p值大于0.05(5%),因此物理动力学模型的输出与产沙量的测量值之间没有显著差异。同样,相关分析支持这一结论,R2值为0.74,呈线性正。
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引用次数: 0
Index Assessment of Household Social Vulnerability to Climate Change: A Case Study of Laguna Province, Philippines 气候变化下家庭社会脆弱性指数评估——以菲律宾拉古纳省为例
IF 0.4 4区 环境科学与生态学 Q4 Environmental Science Pub Date : 2021-06-30 DOI: 10.47125/jesam/2021_1/07
Shota Kamiohkawa, A. Maruyama, I. Buot, M. Buot
This study empirically investigated the social vulnerability of two municipalities of Laguna Province, Philippines, on the impacts of natural disasters associated with climate change. Data were obtained from interviews with seventeen experts and surveys for thirty-seven households conducted in the two municipalities. The results of the index analysis, using the weight average method and ordered probit regression, can be summarized as follows: First, the characteristics of low educational attainment, low labor rate and lack of economic resources were crucial in determining the social vulnerability class of households. Second, the social vulnerability index is determined by multiple factors, and therefore, it should not be assessed by a single variable. Third, the weights for components of the vulnerability index were insignificantly affected by geographical features and the speciality and personal traits of the experts. This suggests that local governments should develop an information system that identifies socially vulnerable households and that this should be utilized to provide the residents with education about climate change and strategies for households to reduce their potential risks from severe climatic events.
本研究实证调查了菲律宾拉古纳省两个市镇在气候变化相关自然灾害影响下的社会脆弱性。数据来自对17名专家的访谈和对两个市镇37户家庭的调查。使用加权平均法和有序probit回归的指数分析结果可以总结如下:首先,低教育程度、低劳动率和缺乏经济资源的特征在确定家庭的社会脆弱性类别时至关重要。第二,社会脆弱性指数是由多个因素决定的,因此不应该由单一变量来评估。第三,脆弱性指数各组成部分的权重受地理特征以及专家的专业和个人特征的影响不大。这表明,地方政府应开发一个信息系统,识别社会弱势家庭,并利用该系统向居民提供有关气候变化的教育,以及家庭减少严重气候事件潜在风险的策略。
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引用次数: 0
Visual Quality Analysis of Educational Institutions and Their Surroundings: A Case Study of Ataturk University, Erzurum, Turkey 教育机构及其环境的视觉质量分析——以土耳其埃尔祖鲁姆阿塔图尔克大学为例
IF 0.4 4区 环境科学与生态学 Q4 Environmental Science Pub Date : 2021-06-30 DOI: 10.47125/jesam/2021_1/02
Işık Sezen, E. Külekçi, Erdem Karadag
The study aimed to analyze the visual quality of the Educational Institutions and their Surroundings (EITS) in the campus of Ataturk University in Erzurum city of Turkey. Visual Quality Analysis Questionnaire was applied to 74 students studying at the Faculty of Architecture and Design. The questionnaire consisted of 21 EITS. Results were analyzed using Variance and Duncan multiple comparison. It was determined that Faculty of Fishery (EITS13) had the highest visual quality score (3.243), followed by Agriculture Faculty (EITS1: 3.134) and the Divine Faculty (EITS2: 2.906). The Faculty of Veterinary Medicine had the lowest visual quality score (EITS11: 2.165), followed by High-Tech Research Centre (EITS20: 2.243) and Faculty of Law (EITS16: 2.315). Statistically significant relationship was found between the department of the students and the scores they gave to Sports Science Faculty (EITS1), Education Faculty (EITS4), Faculty of Medicine (EITS10), Faculty of Veterinary Medicine (EITS11), Faculty of Fine Arts and Tourism (EITS15), and Rectorate Building (EITS19). Among the Visual Quality Criteria (VQC) of EITS, accessibility to the structure (VQC12) was the most effective criterion (2.927, p<0.05). This study recommended the correction of design deficiencies to compensate for the lack of visual quality of new buildings or to improve the entire landscape of the campus.
本研究旨在分析土耳其埃尔祖鲁姆市阿塔图尔克大学校园内教育机构及其环境(EITS)的视觉质量。采用视觉质量分析问卷对建筑与设计学院的74名学生进行了调查。问卷由21个EITS组成。使用方差和邓肯多重比较对结果进行分析。确定渔业学院(EITS13)的视觉质量得分最高(3.243),其次是农业学院(EITS1:3.134)和神学院(EITSA2:2.906)。兽医学院的视觉质量分数最低(EITS11:2.165),其次是高科技研究中心(EITS20:2.243)和法学院(EITS16:2.315,和校长大楼(EITS19)。在EITS的视觉质量标准(VQC)中,结构的可达性(VQC12)是最有效的标准(2.927,p<0.05)。本研究建议纠正设计缺陷,以弥补新建筑视觉质量的不足,或改善校园的整体景观。
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引用次数: 0
Flood Disaster Risk Perception and Sense of Place Among Households Along the Ocoy River in Negros Oriental, Philippines 菲律宾东内格罗州奥科伊河沿岸居民的洪水灾害风险认知与地方意识
IF 0.4 4区 环境科学与生态学 Q4 Environmental Science Pub Date : 2021-06-30 DOI: 10.47125/jesam/2021_1/06
Enrique G. Oracion
This quantitative study using a survey method aims to understand the relationship between flood disaster risk perception and the sense of place of people living in communities along a river. The survey covered a non-probability sample of 120 respondents from households located along with the downstream, midstream, and upstream sections of the Ocoy River in Negros Oriental. Generally, the respondents have very high flood disaster risk perception and sense of place scores which do not significantly differ across communities. But the significant positive relationship between these two major variables contradicts the common understanding that disaster makes people devalue particular places and relocate to safer areas. The majority who conditionally agreed to relocate may not proceed if they perceived a more difficult life in the resettlement site. Adaptive resettlement programs and policies are recommended where the desired characteristics of a place of flood survivors are reconstructed. At the same time, risk reduction and mitigation mechanisms are designed for those who decided to remain in riverside communities.
本文采用调查方法进行定量研究,旨在了解沿河社区居民的洪水灾害风险感知与地方感之间的关系。该调查涵盖了120个非概率样本,受访者来自位于内格罗斯东部奥科伊河下游、中游和上游的家庭。总体而言,被调查者的洪涝灾害风险感知和地方感得分都很高,且社区间差异不显著。但是,这两个主要变量之间显著的正相关关系与人们的普遍理解相矛盾,即灾难使人们贬低特定的地方,并迁移到更安全的地区。多数有条件同意搬迁的人如果认为在安置地点生活比较困难,可能不会搬迁。在洪水幸存者重建的地方,适应性安置计划和政策是值得推荐的。与此同时,为那些决定留在河边社区的人设计了风险降低和缓解机制。
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引用次数: 0
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Journal of Environmental Science and Management
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