Land use

土地利用
  • 文章类型: Journal Article
    背景:土壤传播的蠕虫(STH)是一组被认为是被忽视的热带病(NTD)的蠕虫,全球,每年影响超过150万至260万人。根据物种的不同,它们可以通过从污染物质中摄取含胚胎的卵或通过皮肤渗透来获得。大多数STH物种在热带地区发现,比如菲律宾。尽管有大众药物管理局(MDA),该国的STH感染病例继续上升。热带医学研究所(RITM)的调查表明,STH(A虫,TrichurisTrichiura,和Necatoramericanus)主要在该国各省观察到,例如在CamarinesSur.
    目的:将遥感协变量,例如归一化植被指数(NDVI)和归一化差异构造指数(NDBI)-与CamarinesSur的37个城市的STH感染病例相关联。
    方法:使用量子地理信息系统(QGIS)计算了2015年至2019年STH病例的可用公共卫生记录,并使用皮尔逊相关系数进行了关联。
    结果:结果显示,儿童的感染率高于成人,和A.lumbricoides引起60%的感染。在2015年和2017年期间,没有观察到指标与感染病例的相关性;然而,2019年的相关性表现出中等强度(p=0.037)。
    结论:这表明感染主要不依赖于植被和城市化,而是依赖于其他环境因素和非环境变量。
    BACKGROUND: Soil-transmitted helminth (STH) is a group of helminths that are considered to be neglected tropical diseases (NTDs) and, globally, affect more than 1.5 to 2.6 million people yearly. Depending on the species, they can be acquired by ingesting embryonated eggs from contaminated matter or by skin penetration. Most species of STH are found in the tropics, such as the Philippines. Despite the Mass Drug Administration (MDA), the cases of STH infection continue to rise in the country. Surveys from the Research Institute of Tropical Medicine (RITM) indicate that a high prevalence of STH (Ascaris lumbricoides, Trichuris trichiura, and Necator americanus) was primarily observed in the provinces of the country, such as in Camarines Sur.
    OBJECTIVE: To correlate remote sensing covariates such as Normalized Difference Vegetation Index (NDVI) and Normalized Difference Built-up Index (NDBI) - to STH-infected cases of the 37 municipalities of Camarines Sur.
    METHODS: The available public health record of STH cases from 2015 to 2019 were calculated using the Quantum Geographic Information System (QGIS)and correlated using Pearson Correlation Coefficient.
    RESULTS: The results showed that infection was higher in children than adults, and A. lumbricoides caused 60% of infection. No correlation of indices with infection cases during 2015 and 2017 was observed; however, 2019 showed a moderate strength (p = 0.037) in correlation.
    CONCLUSIONS: This indicates that infection relied not mainly on vegetation and urbanization but on additional environmental factors and non-environmental variables.
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  • 文章类型: Journal Article
    塑料污染已成为全球面临的重大环境挑战,对生态系统和人类健康构成严重威胁。本研究旨在探索循环性之间的相互作用,可持续性以及位于黑海西部沿岸的淡水生态系统中的微塑料释放-杜兹斯,蒂尔基耶.采用整合环境科学的多学科方法,经济学,和政策分析,该研究调查了该地区塑料污染的现状,考虑到不同的土地利用和社会经济生活方式。在四个不同的季节进行,目前的研究确定了该地区微塑料的主要类型。纤维占主导地位,每个季节占86.7%,其次是电影和碎片,分别占7.7%和7.0%,分别。值得注意的是,聚乙烯(PE)和聚丙烯(PP)作为主要的聚合物类型出现。聚合物类型的分布在该地区不同的土地用途上有所不同,强调土地利用在塑造丰度聚合物组成方面的影响作用。污染综合评价,这反映在梅伦河的整体污染负荷指数(PLI)中,表明污染水平令人担忧(PLI>1)。最后,这项研究揭示了社会经济活动与季节性降水模式之间的关系,以及该地区的微塑料污染。这强调了针对特定地点的缓解措施对减少微塑料数量的重要性。最后,将可持续的做法纳入循环经济框架,促进蒂尔基耶经济发展与环境保护之间的和谐平衡。
    Plastic pollution has emerged as a significant environmental challenge worldwide, posing serious threats to ecosystems and human health. This study seeks to explore the interplay among circularity, sustainability, and the release of microplastics within the freshwater ecosystems situated along the western Black Sea coast- Düzce, Türkiye. Employing a multidisciplinary approach that integrates environmental science, economics, and policy analysis, the research examines the current state of plastic pollution in the region, considering diverse land uses and socio-economic lifestyles. Conducted over four different seasons, the current study identifies the prevailing types of microplastics in the region. Fibers dominate, comprising 86.7% in each season, followed by film and fragments at 7.7% and 7.0%, respectively. Notably, polyethylene (PE) and polypropylene (PP) emerges as the primary polymer types. The distribution of polymer types varies across different land uses within the region, emphasizing the influential role of land use in shaping the abundance polymer composition. The comprehensive assessment of pollution, as reflected in the overall pollution load index (PLI) of the Melen River indicating a concerning level of pollution (PLI>1). Finally, the study unveiled the relationship between socio-economic activities as well as the seasonal precipitation patterns, and microplastic contamination in the region. This underscored the importance of site-specific mitigation measures on reducing the amount of microplastics. Lastly, incorporating sustainable practices within the circular economy framework fosters a harmonious balance between economic development and environmental protection in Türkiye.
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  • 文章类型: Journal Article
    噪声污染是采矿活动的无意结果,需要严格的评估,监测,和缓解技术,以减少其对当地居民和生态系统的影响。该研究专门研究了Neendakara-Kayamkulam(NK)沿海带稀土开采活动造成的噪声污染,Kollam,喀拉拉邦,印度,一个富含钛铁矿的地区,金红石,硅线岩,锆石,和独居石。尽管已知噪声污染对环境和健康的影响,该地区关于其大小和来源的具体数据有限,以及缺乏针对稀土采矿作业的有效缓解策略。研究表明,采矿作业,比如重矿物砂的移动,大大提高了噪音水平,这对环境质量和公众健康有影响。这项研究旨在通过地理空间制图和评估噪声水平来填补这一空白,并建议有效减轻噪声污染的措施。在NK沿海带内的48个合适位置进行了系统噪声测量,包括住宅,商业,工业,沿海,和沉默区。噪音水平从宗教场所附近的49.1dB(A)到当地工业附近的82.4dB(A)不等。该研究采用地理空间噪声映射和土地覆盖叠加来实施针对沿海附近混合土地利用区噪声污染的特定类别缓解措施,包括自然和植物障碍,运营调度,分区,和土地利用规划。
    Noise pollution is an unintentional consequence of mining activities, needing rigorous assessment, monitoring, and mitigation techniques to reduce its impact on local residents and ecosystems. The study specifically examines the noise pollution from rare earth mining activities in the Neendakara-Kayamkulam (NK) coastal belt, Kollam, Kerala, India, a region rich in ilmenite, rutile, sillimanite, zircon, and monazite. Despite the known environmental and health impacts of noise pollution, there is limited specific data on its magnitude and sources in this region, as well as a lack of effective mitigation strategies tailored to rare earth mining operations. Studies have indicated that mining operations, such as the movement of heavy mineral sands, considerably elevate noise levels, which have an effect on the environment\'s quality and public health. This study seeks to fill the gap by geospatial mapping and assessing the noise levels and recommend measures to effectively mitigate noise pollution. Systematic noise measurements were conducted at 48 suitable locations within the NK coastal belt, including residential, commercial, industrial, coastal, and silence zones. The noise levels vary from 49.1 dB(A) near a religious place to 82.4 dB(A) near the local industry. The study employs geospatial noise mapping and land cover superimposition to implement class-specific mitigation measures for noise pollution in a coastal vicinity mixed land use area, including natural and vegetative barriers, operational scheduling, zoning, and land use planning.
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  • 文章类型: Journal Article
    总的来说,土地利用和街道布局会对司机和行人的行为产生重大影响。特别是,街景经常被忽视,认识到街景在城市地区街道事故中的作用很重要。这项研究的目的是调查2017年至2021年之间在马什哈德发生的街道景观和土地利用对城市事故的影响。为了实现这一目标,这项研究的重点是分析三个不同城市地区的事故。它还考虑了邻近封闭和开放街道的土地使用类型,包括住宅,商业,和混合土地利用。该研究采用了各种调查来收集与目标领域相关的必要数据和见解。三个区域的事故统计数据表明,在上述土地用途中,商业区发生的事故最多,他们的份额大约是住宅区事故的三倍。此外,75%的事故发生在街景开阔的地区,而封闭景观地区的事故占开放街景地区事故数量的三分之一。在这项研究中,分析和建模是使用Python编程语言实现的机器学习算法进行的。采用了几种模式,并根据其性能和准确性选择最佳模型,其中包括随机森林回归(RFR),多层神经网络感知器回归(MLP)和极值升压梯度回归(XGBoost)。成功预测未来结果的机器学习模型的准确性如下:随机森林回归(RFR)达到85%的准确性,极端提升梯度回归(XGBoost)实现了81%的准确率,最后,神经网络多层感知器回归(MLP)达到75%的精度。
    In general, land use and layout of streets can have a significant impact on the behavior of drivers and pedestrians. In particular, streetscape has often been overlooked that recognizing the role of streetscape on street accident in urban areas is important. The aim of this research is to investigate the influence of streetscape and land use on urban accidents that occurred in Mashhad between the years 2017 and 2021. To achieve this objective, the study focused on analyzing accidents in three different urban zones. It also considered the land use types adjacent to both closed and open streets, including residential, commercial, and mixed land uses. The research employed various surveys to gather the necessary data and insights related to the targeted areas. Statistics on accident in three zones show that among the mentioned land uses, commercial areas have experienced the highest number of accidents, with their share being approximately three times that of accidents in residential areas. Additionally, 75 % of all accidents took place in areas with open streetscape, whereas accidents in areas with enclosed view accounted for one third of the number of accidents in open streetscape areas. In this research, analysis and modeling were conducted using machine learning algorithms implemented in the Python programming language. Several models were employed, and the best models were selected based on their performance and accuracy, which include Random Forest Regression (RFR), Multilayer Neural Network Perceptron Regression (MLP) and Extreme Boost Gradient Regression (XGBoost). The accuracy of the machine learning models which successfully predicted future outcomes was as follows: Random Forest Regression (RFR) achieved 85 % accuracy, Extreme Boost Gradient Regression (XGBoost) achieved 81 % accuracy, and finally, Neural Network Multilayer Perceptron Regression (MLP) achieved 75 % accuracy.
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  • 文章类型: Journal Article
    农村地区是干旱半干旱地区生态系统服务的主要来源,和生态系统服务是乡村振兴的背景条件。在这项研究中,评估了农村关键生态系统服务的空间格局,研究了生态系统服务之间的权衡和协同关系,以中国塔城-额敏盆地为研究区。最后,提出了农村生态功能区划的类型和发展策略。结果表明:(1)生态用地面积大,平均土地利用强度为2.48,属于中等强度。(2)六种生态系统服务的均值均为中下层,五种生态系统服务的空间分布相似,除了食品生产。(3)除粮食生产外,其他五个生态系统服务对海拔表现出积极的反馈。其他五个生态系统服务是协同的,粮食生产和其他生态系统服务之间存在权衡。在生态系统服务的非线性相互作用机制中,波动约束占比最大。(4)在较小的空间尺度上,生态系统服务集群的类型更多。结合研究结果,研究区的村庄可以分为五种类型。本研究制定了乡村生态振兴的五个优先层次,并对各类型村庄的可持续发展提出了不同的发展建议。本研究有助于土地资源精细化管理和乡村生态振兴,为干旱半干旱地区生态系统服务的可持续发展提供参考。
    Rural areas are the main source of ecosystem services in arid and semi-arid areas, and ecosystem services are the background conditions for rural revitalization. In this study, the spatial pattern of key ecosystem services in the countryside was assessed, and the trade-offs and synergistic relationships among ecosystem services were investigated, using the Tacheng-Emin Basin in China as the study area. Finally, the types of ecological function zoning and development strategies for the countryside are proposed. The results showed that: (1) the area of ecological land was large, and the average land use intensity was 2.48, which belonged to the medium intensity. (2) The mean values of the six ecosystem services are all in the middle and lower classes, and the spatial distribution of the five ecosystem services is similar, except for food production. (3) Except for grain production, the other five ecosystem services showed positive feedback to elevation. The other five ecosystem services are synergistic, and there are trade-offs between grain production and other ecosystem services. In the nonlinear interaction mechanism of ecosystem services, the fluctuation constraint occupies the largest proportion. (4) At smaller spatial scales, there are more types of ecosystem service clusters. Combining the results of the study, the villages in the study area can be categorized into five types. This study formulates five priority levels of rural ecological revitalization and proposes different development recommendations for the sustainable development of each type of village. This study is helpful for the fine management of land resources and the revitalization of rural ecology and provides a reference for the sustainable development of ecosystem services in arid and semi-arid areas.
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  • 文章类型: Journal Article
    尽管在排放控制方面做出了一致努力,空气污染控制仍然具有挑战性。城市规划已成为缓解PM2.5污染的重要策略。尚不清楚的是城市形态的影响及其与季节变化的相互作用。在这项研究中,以长三角城市群空气质量监测站为基础,利用全子集回归和方差划分分析研究了城市空间指标(建筑形态和土地利用)与PM2.5浓度之间的关系,并进一步分析了季节性差异。我们的研究结果表明,PM2.5污染对空间尺度表现出不同的敏感性,对局部尺度的建筑物三维结构形成的局部小气候具有更高的敏感性,而土地利用在更大范围内发挥更大的影响。具体来说,随着缓冲区的扩大,土地利用指标对PM2.5预测模型的贡献明显更大(从100米范围的平均2.41%增加到5000米范围的47.30%),而建筑物形态指标显示出相反的趋势(从100m范围内的13.84%到5000m范围内的1.88%)。这些结果证明了在地方尺度城市规划中考虑建筑形态的重要性,建筑物高度的增加可以显着增强PM2.5污染的危害。相反,大规模城市规划应优先考虑绿地和建设用地的混合使用,以减轻PM2.5污染。此外,观察到城市空间指标与PM2.5污染的季节性差异。特别值得运动的是森林之间的联系增强,夏季水指标和PM2.5浓度,表明城市森林可能促进挥发性化合物的形成,加剧PM2.5污染。我们的研究为解决城市空间规划中与尺度相关的挑战提供了理论基础,从而促进城市的可持续发展。
    Despite concerted efforts in emission control, air pollution control remains challenging. Urban planning has emerged as a crucial strategy for mitigating PM2.5 pollution. What remains unclear is the impact of urban form and their interactions with seasonal changes. In this study, base on the air quality monitoring stations in the Yangtze River Delta urban agglomeration, the relationship between urban spatial indicators (building morphology and land use) and PM2.5 concentrations was investigated using full subset regression and variance partitioning analysis, and seasonal differences were further analysed. Our findings reveal that PM2.5 pollution exhibits different sensitivities to spatial scales, with higher sensitivity to the local microclimate formed by the three-dimensional structure of buildings at the local scale, while land use exerts greater influence at larger scales. Specifically, land use indicators contributed sustantially more to the PM2.5 prediction model as buffer zone expand (from an average of 2.41% at 100 m range to 47.30% at 5000 m range), whereas building morphology indicators display an inverse trend (from an average of 13.84% at 100 m range to 1.88% at 5000 m range). These results enderscore the importance of considering building morphology in local-scale urban planning, where the increasing building height can significantly enhance the disperion of PM2.5 pollution. Conversely, large-scale urban planning should prioritize the mixed use of green spaces and construction lands to mitigate PM2.5 pollution. Moreover, the significant seasonal differences in the ralationship between urban spatical indicatiors and PM2.5 pollution were observed. Particularly moteworthy is the heightened association between forest, water indicators and PM2.5 concentrations in summer, indicating the urban forests may facilitate the formation of volatile compunds, exacerbating the PM2.5 pollution. Our study provides a theoretical basis for addressing scale-related challenges in urban spatial planning, thereby forstering the sustainable development of cities.
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  • 文章类型: Journal Article
    伊洛河是黄河中游小浪底水库下最大的支流,是黄河流域重要的水源涵养区之一。研究该流域不同土地利用类型下伊洛河的生态状况,对于黄河流域的生态保护和高质量发展至关重要。本研究调查了土地利用类型对伊洛河流域大型无脊椎动物群落和功能结构的影响,并引入了土地利用健康指数(LUI)的概念。在调查期间,共收集到1894种大型无脊椎动物,并鉴定了143个物种,属于4门,7命令,22个家庭,75个家庭。结果表明,LUI对大型无脊椎动物群落结构的影响最为显著,与基板类型,植物干重,总磷,浊度,和附着的藻类生物量在影响大型无脊椎动物群落中也起着重要作用。物种丰富,Shannon-Wiener指数,Margalef丰富度指数与采样点的LUI呈非线性正相关,随着LUI的增强而增加,并最终达到一个平台。功能丰富度与LUI呈线性正相关,随着它的增强而增加,而功能均匀性和功能发散性与LUI呈非线性相关。随着LUI的增强,功能均匀性最初增加,然后下降,而功能分歧随LUI增强而减小。该研究可为不同土地利用情景下的河流生态管理提供科学参考。
    Land use types have a significant impact on river ecosystems. The Yiluo River is the largest tributary below Xiaolangdi Reservoir in the middle reaches of the Yellow River, and is one of the important water conservation areas in the Yellow River Basin. Studying the ecological status of the Yiluo River under varied land use types in this basin is crucial for both ecological protection and the high-quality development of the Yellow River Basin. This study investigated the impacts of land use types on the macroinvertebrate community and functional structure in the Yiluo River Basin and introduced the concept of the land use health index (LUI). During the survey period, a total of 11,894 macroinvertebrates were collected, and 143 species were identified, belonging to 4 phyla, 7 orders, 22 families, and 75 families. The results showed that LUI had the most significant impact on macroinvertebrate community structure, with substrate type, dry plant weight, total phosphorus, turbidity, and attached algae biomass also playing significant roles in affecting macroinvertebrate communities. The species richness, the Shannon-Wiener index, and the Margalef richness index exhibited a nonlinear positive correlation with LUI of the sampling site, increasing as LUI enhancing and eventually reaching a plateau. Functional richness showed a linear and positive correlation with LUI, increasing with its enhancement, while functional evenness and functional divergence exhibited a nonlinear correlation with LUI. Functional evenness initially increased and then decreased with the enhancement of LUI, while functional divergence decreased with LUI enhancement. This study can provide a scientific reference for river ecological management under various land use scenarios.The Yiluo River is the largest tributary below Xiaolangdi Reservoir in the middle reaches of the Yellow River, and is one of the important water conservation areas in the Yellow River Basin. Studying the ecological status of the Yiluo River under varied land use types in this basin is crucial for both ecological protection and the high-quality development of the Yellow River Basin. This study investigated the impacts of land use types on the macroinvertebrate community and functional structure in the Yiluo River Basin and introduced the concept of the land use health index (LUI). During the survey period, a total of 11,894 macroinvertebrates were collected, and 143 species were identified, belonging to 4 phyla, 7 orders, 22 families, and 75 families. The results showed that LUI had the most significant impact on macroinvertebrate community structure, with substrate type, dry plant weight, total phosphorus, turbidity, and attached algae biomass also playing significant roles in affecting macroinvertebrate communities. The species richness, the Shannon-Wiener index, and the Margalef richness index exhibited a nonlinear positive correlation with LUI of the sampling site, increasing as LUI enhancing and eventually reaching a plateau. Functional richness showed a linear and positive correlation with LUI, increasing with its enhancement, while functional evenness and functional divergence exhibited a nonlinear correlation with LUI. Functional evenness initially increased and then decreased with the enhancement of LUI, while functional divergence decreased with LUI enhancement. This study can provide a scientific reference for river ecological management under various land use scenarios.
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  • 文章类型: Journal Article
    揭示生境质量背后的时空演变特征和关键驱动过程,对生产的科学管理具有重要意义,生活,资源型城市的生态空间,以及资源的有效分配。以中国江苏省最大的采煤塌陷区为重点,本研究考察了土地利用强度的时空演变,形态学,和跨不同时间段的功能。利用InVEST模型评价了泛安湖地区的生境质量特征,空间自相关,和热点分析技术。随后,通过采用GTWR模型,它量化了关键因素的影响,揭示了它们对栖息地质量影响的空间变化特征。调查结果表明,泛安湖地区的建筑活动显着激增,表明明显的人为干预。同时,栖息地退化加剧,伴随着退化水平不断扩大的空间异质性。最差的栖息地质量发生在煤炭开采和大规模城市建设期间。土地利用强度的升级是泛安湖地区栖息地质量下降的主要催化剂,其他因素在不同阶段的影响和强度表现出空间变异性。
    Revealing the spatiotemporal evolution characteristics and key driving processes behind the habitat quality is of great significance for the scientific management of production, living, and ecological spaces in resource-based cities, as well as for the efficient allocation of resources. Focusing on the largest coal-mining subsidence area in Jiangsu Province of China, this study examines the spatiotemporal evolution of land use intensity, morphology, and functionality across different time periods. It evaluates the habitat quality characteristics of the Pan\'an Lake area by utilizing the InVEST model, spatial autocorrelation, and hotspot analysis techniques. Subsequently, by employing the GTWR model, it quantifies the influence of key factors, unveiling the spatially varying characteristics of their impact on habitat quality. The findings reveal a notable surge in construction activity within the Pan\'an Lake area, indicative of pronounced human intervention. Concurrently, habitat degradation intensifies, alongside an expanding spatial heterogeneity in degradation levels. The worst habitat quality occurs during the periods of coal mining and large-scale urban construction. The escalation in land use intensity emerges as the primary catalyst for habitat quality decline in the Pan\'an Lake area, with other factors exhibiting spatial variability in their effects and intensities across different stages.
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  • 文章类型: Journal Article
    背景:确定对人类和行星健康有益的饮食变得越来越重要。然而,到目前为止,关于儿童和青少年可持续饮食的研究有限,有特殊营养需求的弱势群体。
    目标:我们的目标是:确定1)温室气体排放(GHGE)的主要决定因素和2)年龄和时间趋势,土地利用(LU),以及儿童和青少年饮食的用水(WU),和3)分析膳食GHGE的相关性,LU,和WU营养充足。
    方法:分析了2000年至2021年之间DONALD(DORTmund营养和人体测量纵向设计)研究的5,510个3天称重的饮食记录(n=856;6-17y;48%‰)。GHGE值(kgCO2eq),LU(m2x年),和通过生命周期评估确定的WU(L)被分配到所有记录的食物。为了营养充足,使用平均充足率(MAR=∑(营养素摄入量/推荐摄入量)/营养素数量)。使用多项式混合效应回归模型分析数据。
    结果:GHGE和LU的主要贡献者是肉制品(GHGE:25.6%;LU:32.8%),乳制品(22.2%;17.7%),及甜食及糕点(14.0%;14.3%);至吴,非酒精饮料(24.3%),肉制品(18.9%),以及蔬菜和水果(17.7%)。GHGE,LU,每1000kcal的WU随年龄增长而增加(p<0.01)。GHGE和LU每1000kcal在2000-2010年间增加,之后在女性(p<0.01)和男性(仅GHGE:p=0.02)中减少。WU没有发现显著的时间趋势(p>0.05)。较高的MAR与GHGE/1000kcal直接相关(MAR:β=0.011,95CI:0.008-0.013,p<0.0001),LU/1000kcal(MAR:β=0.009,0.005-0.013,p<0.0001)和WU/1000kcal(MAR:β=0.429,0.325-0.533,p<0.0001)。
    结论:我们的发现强调了进一步的需求,也强调了向环境可持续饮食转变的能力。然而,儿童和青少年饮食中环境可持续性和营养充足性之间的权衡需要特别注意饮食组成。
    Identifying diets beneficial for both human and planetary health has become increasingly important. However, to date, there is limited research on sustainable diets for children and adolescents, a vulnerable population group with specific nutritional needs.
    We aimed to identify 1) the main determinants; 2) age and time trends of greenhouse gas emissions (GHGE), land use (LU), and water use (WU) of diets of children and adolescents; and 3) analyze the associations of dietary GHGE, LU, and WU with nutrient adequacy.
    A total of 5510 3-d-weighted dietary records (n = 856; 6-17 y; 48% ♀) of the DONALD (DOrtmund Nutritional and Anthropometric Longitudinally Designed) study between 2000 and 2021 were analyzed. Values of GHGE (kgCO2eq), LU (m2 × year), and WU (L) determined by life cycle assessment were assigned to all recorded foods. For nutrient adequacy, the mean adequacy ratio (MAR = ∑(nutrient intake / recommended intake) / number of nutrients) was used. Data were analyzed using polynomial mixed-effects regression models.
    The main contributors to GHGE and LU were meat products (GHGE: 25.6%; LU: 32.8%), dairy products (22.2%; 17.7%), and sweets and pastries (14.0%; 14.3%); to WU, nonalcoholic beverages (24.3%), meat products (18.9%), and vegetables and fruits (17.7%). GHGE, LU, and WU per 1000 kcal increased with age (P < 0.01). GHGE and LU per 1000 kcal increased between 2000 and 2010 and decreased after that in females (P < 0.01) and males (GHGE only: P = 0.02). No significant time trend was found for WU (P > 0.05). A higher MAR was directly associated with GHGE/1000 kcal (MAR: β: 0.011, 95% CI: 0.008, 0.013, P < 0.0001), LU/1000 kcal (MAR: β: 0.009, 95%CI: 0.005, 0.013, P < 0.0001), and WU/1000 kcal (MAR: β: 0.429, 95% CI: 0.325, 0.533, P < 0.0001).
    Our findings underscore the further need and the capacity for change toward more environmentally sustainable diets. Yet, the tradeoff between environmental sustainability and nutrient adequacy in the diets of children and adolescents requires specific attention to dietary composition.
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  • 文章类型: Journal Article
    许多研究已经表征了河流微生物群落中的抗性。然而,很少有人比较平行农村流域的抗性体,这些流域的抗微生物基因(ARGs)和生物体的点源输入很少(即,AMR)-集水区,人们可以在农村河流中形成更多模糊的AMR驱动因素。这里,我们使用定量微生物分析(QMP)来比较英格兰北部两个农村河流流域的抗性和微生物组,诺森伯兰郡和坎布里亚郡的科凯和伊甸园,分别,具有不同的水文和地理条件。伊甸园有更高的流速,较高的年地表径流,和更长的土壤饱和时间,而Coquet更干燥,流量更低。QMP分析显示,伊甸园含有与土壤来源相关的更丰富的微生物,动物粪便,和废水比Coquet,它的微生物组像污染较少的河流(Wilcoxon测试,p<0.01)。伊甸园也有更大的ARG丰度和抗性组多样性(KruskalWallis,p<0.05),和更高水平的潜在临床相关的ARGs。伊甸园流域的径流更大,更耀眼,中部地区的农业用地更广泛,这解释了河流中AMR水平较高。水文和地理因素驱动农村河流的AMR,这必须在环境监测计划中加以考虑。
    Many studies have characterised resistomes in river microbial communities. However, few have compared resistomes in parallel rural catchments that have few point-source inputs of antimicrobial genes (ARGs) and organisms (i.e., AMR) - catchments where one can contrast more nebulous drivers of AMR in rural rivers. Here, we used quantitative microbial profiling (QMP) to compare resistomes and microbiomes in two rural river catchments in Northern England, the Coquet and Eden in Northumberland and Cumbria, respectively, with different hydrological and geographical conditions. The Eden has higher flow rates, higher annual surface runoff, and longer periods of soil saturation, whereas the Coquet is drier and has lower flowrates. QMP analysis showed the Eden contained significantly more abundant microbes associated with soil sources, animal faeces, and wastewater than the Coquet, which had microbiomes like less polluted rivers (Wilcoxon test, p < 0.01). The Eden also had greater ARG abundances and resistome diversity (Kruskal Wallis, p < 0.05), and higher levels of potentially clinically relevant ARGs. The Eden catchment had greater and flashier runoff and more extensive agricultural land use in its middle reach, which explains higher levels of AMR in the river. Hydrological and geographic factors drive AMR in rural rivers, which must be considered in environmental monitoring programmes.
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