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The Nexus Between Climate Change & Food Security: A Comprehensive Review of Global Trends & Regional Disparities 气候变化与粮食安全之间的联系:全球趋势与地区差异综合评述
Pub Date : 2024-05-22 DOI: 10.20849/jess.v7i1.1431
Mohammed Samiullah, R. Khanum, Tanzim Khan, Mohaimin ul Kabir, Istiak Ibne Rouf, Sharmin Nahar Nipa
Climate change & nourishment security are closely related challenges with basic proposition for around the world common sense & human well-being. This comprehensive report investigates the complex relationship between climate alter & nourishment security, analyzing around the world plans & territorial contrasts. This paper synthesizes existing look at, exploratory information, & case considers supplying bits of data into the exuberant sagaciously between climate change, common adequacy, nourishment scrambling systems, & socio-economic weakness. This think looks at the reasonability of current modification techniques, evaluates the socio-economic & political components behind territorial unbalanced nature, & recognizes openings to make strides the adaptability of nourishment frameworks around the world. This think nearly gives a nuanced understanding of the challenges climate alter positions to around the world nourishment security by joining quantitative examination of nursery gas radiations & modification strategies with subjective bits of data from adjacent communities. The divulgences highlight the essential requirement for concerted activity at neighborhood, national & around the world levels to create climate-resilient & doable nourishment frameworks.
气候变化和营养安全是密切相关的挑战,关系到全球常识和人类福祉。这份综合报告调查了气候变化与营养安全之间的复杂关系,分析了全球计划和地区对比。本文综合了现有研究、探索性信息和案例分析,提供了气候变化、共同充足性、营养扰乱系统和社会经济薄弱环节之间的大量数据。本研究探讨了当前修改技术的合理性,评估了领土不平衡背后的社会经济和政治因素,并认识到了提高全球营养框架适应性的机会。该书通过对温室气体辐射和改造策略的定量研究,结合邻近社区的主观数据,对气候变化给全球营养安全带来的挑战进行了深入分析。这些信息强调了在社区、国家和全球层面开展协调活动的基本要求,以创建适应气候和可行的营养框架。
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引用次数: 0
Concentration of Phthalate Esters in Bottled Water: A Case Study in Effurun, Delta State, Nigeria 瓶装水中邻苯二甲酸酯的浓度:尼日利亚三角洲州埃夫伦的案例研究
Pub Date : 2023-07-26 DOI: 10.20849/jess.v6i2.1398
O. Edjere, Efe Jeffery Isukuru, Nwafor Anwulika Chizoba, Usanga Idopiseabasi Edet, Nwachukwu Ubazuo Alfred
Phthalate esters (PAEs), a group of chemical compounds, are extensively used as additives in plastics. The objective of this study was to determine how much of a few target PAEs have leached into various samples of drinking water packaged in PET bottles in Effurun, Delta State, Nigeria as well as how ambient temperature, sunshine exposure, and cold storage conditions have affected the concentration of PAE. The concentrations of Di-ethyl-phthalate (DEP), di-butyl-phthalates (DBP), benzyl-butyl-phthalate (BBP), di-n-octyl phthalate (DnOP), and Bis-(2-ethyl-hexyl) phthalate (DEHP) were determined in bottled water samples. The concentrations of PAEs were determined using a gas chromatography coupled with a mass sepctroscopy analyzer (GC-MS). Phthalate compound was observed to be in all bottled water placed under different storage conditions; cold storage (CW), ambient storage (AW), and sunlight storage (SLW) for a period of 2, 4, 8, 12 and 16 weeks. However, the greatest leaching effect was observed in PET bottled water placed sunlight conditions for sixteen weeks with concentrations of; DEHP (2.1-11.2) µg/L, DEP (0.98-3.87) µg/L, DBP (2.98-13.8) µg/L. The results from this study indicated that, under various storage conditions, DEP, DBP and DEHP from PET bottles may leach more into the drinking water over a period of time under different storage conditions. The result additionally gave indication that DEHP; a known endocrine disruptor, with anti-androgenic and possible human carcinogen effects, exceeded the 6 µg/L USEPA Maximum Contamination Level (MCL) in drinking water, and also greater than 8 µg/L which is the indicated MCL by the World Health Organization (WHO).
邻苯二甲酸酯 (PAE) 是一组化合物,被广泛用作塑料添加剂。本研究的目的是确定在尼日利亚三角洲州 Effurun 用 PET 瓶包装的各种饮用水样本中,几种目标 PAE 的沥滤量,以及环境温度、阳光照射和冷藏条件对 PAE 浓度的影响。测定了瓶装水样本中邻苯二甲酸二乙酯 (DEP)、邻苯二甲酸二丁酯 (DBP)、邻苯二甲酸苄基丁酯 (BBP)、邻苯二甲酸二正辛酯 (DnOP) 和邻苯二甲酸二(2-乙基-己基)酯 (DEHP) 的浓度。使用气相色谱-质谱分析仪(GC-MS)测定了 PAEs 的浓度。在冷藏(CW)、常温储存(AW)和日光储存(SLW)等不同储存条件下,观察到所有瓶装水在 2、4、8、12 和 16 周内都含有邻苯二甲酸盐化合物。然而,在日光条件下放置 16 周的 PET 瓶装水中观察到的沥滤效应最大,浓度为:DEHP (2.1-11.2) µg/L、DEP (0.98-3.87) µg/L、DBP (2.98-13.8) µg/L。这项研究的结果表明,在不同的储存条件下,PET 瓶中的 DEP、DBP 和 DEHP 在不同的储存条件下,可能会在一段时间内沥滤到更多的饮用水中。此外,研究结果还表明,DEHP 是一种已知的内分泌干扰物,具有抗雄激素和可能致癌的作用,在饮用水中的含量超过了美国环保局规定的 6 微克/升的最高污染水平(MCL),也超过了世界卫生组织(WHO)规定的 8 微克/升的最高污染水平。
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引用次数: 0
Experimental Investigation on Countermeasures for Gravel Bed Scouring and Driftwood Deposition Around Pier 码头周围砾石床冲刷和漂流木沉积对策的实验研究
Pub Date : 2023-07-26 DOI: 10.20849/jess.v6i2.1395
Youichi Yasuda, Toshiki Ishitsuka
During floods, driftwood is generated simultaneously with sediment runoff, may impinge and accumulate on bridge piers. In this case, the water level rises upstream of the bridge, flooding from the river, resulting in major damage, such as overtopping and collapse of houses and bridges. Further, a high velocity flow passing over the pier due to impact of the flow at the upstream face of the pier causes scouring of the river bottom around the pier. In this study, the installation of consecutively assembled boulders was proposed in order to protect against scouring around the pier. A trapezoidal elliptical shape pier was also proposed as a countermeasure to reduce driftwoods capturing. As a comparative study, revetment blocks, which are conventionally used as countermeasure works, were installed. The experimental results revealed that the proposed structure was effective in reducing driftwood deposition and preventing gravel bed scouring, based on analysis using flow velocity with time series variation, vector diagrams, and driftwood model.
洪水期间,漂流木与泥沙径流同时产生,可能会冲撞并堆积在桥墩上。在这种情况下,桥梁上游的水位上升,河水泛滥,造成重大损失,如房屋和桥梁倾覆和倒塌。此外,由于水流冲击桥墩上游面,高速流经桥墩时会冲刷桥墩周围的河底。在这项研究中,为了防止桥墩周围的冲刷,建议安装连续组装的巨石。此外,还提出了梯形椭圆墩作为减少流木捕获的对策。作为对比研究,还安装了传统上用作对策工程的护岸块石。实验结果表明,根据时间序列变化的流速、矢量图和浮木模型进行分析,所建议的结构能有效减少浮木沉积,防止砾石床冲刷。
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引用次数: 0
Responses of Two Red Cabbage Hybrids to Nano NPK and Zinc Fertilizers (Brassica oleracea L. var. capitata rubra) 两种红甘蓝杂交种对纳米氮磷钾和锌肥的响应
Pub Date : 2023-07-26 DOI: 10.20849/jess.v6i2.1364
Mohamed Ahmed Ahmed, Sanaa M.s. Rasheed, Pashtiwan J. M. Zeebaree, Warhel N. A
The experiment was indicated in the field condition at protected cultivation Department/ in Zakho Technical Institute/Dohuk Polytechnic University, Kurdistan Region/Iraq, during the winter growing season (2021-2022), which aimed to investigate the effectiveness three levels of nano NPK (0, 1 and 2 g l-1) and three level of Zinc fertilizers (0, 2 and 4 g l-1) on growth and yield of two red Cabbage hybrids (Brassica oleracea L. var. capitata rubra) plants. Results showed that the Zeina hybrid plants superior to Tropicana hybrid in all parameter weight of plants, number of Leaves per Head, Weight of head, head circumstances, head length and total yield. While the plants treated with and 1 g l-1 nano NPK fertilizers had significantly influenced on number of leaves per head, weight of plants, weight of head, head circumstance, total yield, when compared with control. Additionally, increased concentrations of nano NPK fertilizers sprayed on plants to 2 g l-1 caused a significantly increase of weight of head and stem diameters. Furthermore, the plants sprayed with 4 g l-1 Zinc fertilizers had significantly affected on number of leaves per head, weight of head, stem diameter and total yield. Whereas, head weight and length of head significantly increased when plants treated with 2 g l-1 Zinc fertilizers. Further research is needed to investigate whether the other cabbage cultivar and higher concentrations nano NPK and Zinc fertilizers than used in this research will give the better parameters.
本试验于冬季(2021-2022年)在伊拉克库尔德斯坦地区(Kurdistan Region) Zakho Technical Institute/Dohuk Polytechnic University的保护地栽培部/大田条件下进行,旨在研究纳米氮磷钾(0、1和2 g -1)和锌肥(0、2和4 g -1)对两种杂交红甘蓝(Brassica oleracea L. vara . capitata rubra)植株生长和产量的影响。结果表明,Zeina杂交种在株重、单株叶数、穗重、穗况、穗长和总产量等指标上均优于纯果乐杂交种。与对照相比,1 g -1纳米氮磷钾处理对单株叶片数、株重、穗重、穗况、总产量均有显著影响。此外,将纳米氮磷钾浓度增加到2 g l-1时,穗重和茎粗显著增加。此外,施用4 g l-1锌肥对植株的单株叶数、穗重、茎粗和总产量有显著影响。2 g l-1锌处理显著提高了植株的穗重和穗长。其他白菜品种和施用比本研究浓度更高的纳米氮磷钾和锌肥是否能提供更好的参数,还有待进一步研究。
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引用次数: 0
Prevention Due to Assembled Boulders Against Local Scouring in Low-head Hydraulic Structures 在低水头水利工程中,组装好的巨石可防止局部冲刷
Pub Date : 2023-07-26 DOI: 10.20849/jess.v6i2.1397
Youichi Yasuda, Shuntaro Suzuki
In low-head hydraulic structures, the prevention against local scouring of the river bed downstream of concrete aprons must be required during flood stages. Generally, protection blocks are installed downstream of the apron, but they do not control the flow passing through the blocks to reduce the velocity near the bottom. In most of river fields, the installation of protection blocks may not help protect the river bed. In the case of low drop-structures, hydraulic jump occurs during flood stages just below the drop-structures. The main flow near the bottom continues far downstream, and a local scouring is formed. In the case of the movable weir, a local scouring occurs downstream of the weir during flood stages. There is little information on the countermeasure against the local scouring below the movable weir during flood stages. Recently, the authors proposed the installation of consecutively assembled boulders instead of protection blocks. This paper presents the effect of installing consecutively assembled boulders on the prevention of local scouring for both low drop-structures and movable weirs. The effect of seepage on reducing flow velocity near the bottom has been shown, the comparison between the installation of protection blocks and the installation of consecutively assembled boulders has been discussed. In the case of the movable weir, the flow velocity near the bottom below the protection blocks is always larger than that below the assembled boulders, in which the effect of the deflected flow formation by the support pier is not negligible.
在低水头水利工程中,必须要求在洪水期防止混凝土挡板下游河床的局部冲刷。一般情况下,会在挡水板下游安装保护块,但这些保护块并不能控制通过保护块的水流,从而降低底部附近的流速。在大多数河段,安装保护块可能无助于保护河床。在低落差结构的情况下,洪水期会在落差结构下方发生水力跃迁。底部附近的主流继续向下游延伸,形成局部冲刷。就活动堰而言,在洪水期,堰的下游会出现局部冲刷。有关洪水期活动堰下游局部冲刷的对策资料很少。最近,作者提出了安装连续组装的巨石来代替保护块的建议。本文介绍了在低落差结构和活动堰上安装连续组装的巨石对防止局部冲刷的效果。文中显示了渗流对降低底部附近流速的影响,并讨论了安装保护块与安装连续拼装巨石之间的比较。在活动堰的情况下,保护块下方的近底流速总是大于拼装巨石下方的流速,其中支撑墩形成的偏流的影响不可忽略。
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引用次数: 0
Experimental Investigation on Velocity Fields of Seepage Flow Inside Gravel Mount 砾石支架内渗流速度场的实验研究
Pub Date : 2023-07-26 DOI: 10.20849/jess.v6i2.1373
Youichi Yasuda, Megumi Uemura
There is little information on velocity field of seepage flows. The formation of seepage flow is significant for aquatic habitat including spawning of aquatic animals in river. To create spawning fields in river, the stability of a heaped-up gravels during floods is required for its artificial formation. The velocity measurement of seepage flows is also necessary. This paper presents velocity fields of seepage flows in a heaped-up gravels. The experimental study yields that the heaped-up gravels are stabilized by installing the consecutively assembled boulders on the gravels. Also, small mean velocity and standard deviation are recorded for different discharges. Spectrum analysis reveals that fluctuation velocity of seepage flows depends on the turbulent flow above the heaped-up gravels.
有关渗流速度场的信息很少。渗流的形成对水生生境(包括河流中水生动物的产卵)意义重大。要在河流中形成产卵场,就必须在洪水期间保持堆积砾石的稳定性,以便人工形成产卵场。渗流的速度测量也是必要的。本文介绍了堆积砾石中的渗流速度场。实验研究表明,通过在砾石上安装连续组装的巨石,可以稳定堆积砾石。此外,还记录了不同排水量下的小平均速度和标准偏差。频谱分析表明,渗流的波动速度取决于堆积砾石上方的湍流。
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引用次数: 0
Geomorphological Features of the Area to Be Established as a UNESCO Global Geopark in Phu Yen 拟建为联合国教科文组织世界地质公园的富颜地区的地貌特征
Pub Date : 2023-06-11 DOI: 10.20849/jess.v6i1.1354
N. Toan, Nguyen Vo Linh, Truong Quang Quy, Vu Quang Lan, Ngo Thi Be, Nguyen Vo Kien
The proposed area for establishment of Phu Yen Geopark is limited to 6 districts, towns and cities, including: Tuy Hoa City, Dong Hoa provincial town, Tuy An district, Song Cau provincial town and 3 communes, 1 town in Phu Hoa district town, 3 communes in Son Hoa district with an area of 1,575 km2. Distributed in the central coastal line, the area's topography is quite diverse, including mountains, hills, plains and coastal areas, divided into 6 main origin types: 1) Terrain tectonics, volcanoes, architectural erosion, include: The tectonic and cavitation flanks of Pliocene - Quaternary age; Highland ridge, Neogene - highland Quaternary; Surface of the volcanic plateau has an elevation of less than 250 m; Surface of volcanic plateau is 300-400 m high; Cone ridge of Quaternary age crater; Structural eroded slope; Slope erodes edge of dome of the intrusive blocks, quartz fracture zones; 2) Terrain formed by erosion – cavitation, include: Pediple leveled surface, Miocene age 750 - 1100m high; Pediple leveled surface, early Pliocene age 450 - 600 m high; Pediple leveled surface, late Pliocene age 300 – 400 m high; Pediment leveled surface, Late Pliocene - Early Pleistocene age 150 - 250m high; Early - middle Pleistocene pedimen surface, 50 - 120 m high; Cavitation flank; Cavitation flanks of crevices and ditches of Quaternary age; Cavitation – erosion flanks; Collapsed erosion flank in Neogene - Quaternary age; Synthetic erosion flank Neogene - Quaternary age; Abrasion flank Quaternary age; 3) Terrain formed by rivers, include: River shelf level II, late Pleistocene age; River shelf level I, middle Holocene age; River accumulation delta, late Holocene age, early age; River bed and low alluvial ground along the riverbed, late Holocene age, late age; 4) Terrain formed by the sea, include: Abrasion – marine accumulation surface, Early – Middle Pleistocene age; Abrasive seashelf – accumulation level III, late Pleistocene age, early age; Abrasive seashelf – accumulation level II, late Pleistocene age, late age; Sea shelf level I, middle Holocene age, 5-10 m high; Surface of the sand dyke connecting the island, late Holocene age, early age; Modern beaches are flooded with frequent tides; 5) Terrain include:formed by the mixed impact of rivers and sea, include: The river-sea delta (shelf) of the Late Pleistocene age, Late and Middle Holocene age; Modern sea-swamp plain; Modern river-swamp plain; 6) Terrain formed by wind, include: Terrain type of sand dunes with elevation of 15-25 m; The terrain is sandy hill with an altitude of 105 m. Each terrain type is associated with diverse geological heritages: paleontological heritage; geomorphological heritage; stone heritage…
拟设立富颜地质公园的范围限于6个区、镇、市,包括:土化市、东化省镇、土安区、宋滘省镇和3个乡、富化区镇1个镇、顺化区3个乡,面积1575平方公里。该地区分布在中部海岸线,地形多样,包括山地、丘陵、平原和沿海地区,主要分为6种成因类型:1)地形构造、火山、建筑侵蚀,包括:上新世—第四纪构造翼和空化翼;高原岭,新近纪-高原第四纪;火山高原表面海拔小于250米;火山高原地表高度300-400米;第四纪火山口锥脊;结构侵蚀坡;斜坡侵蚀侵入块体穹隆边缘、石英破碎带;2)侵蚀-空化作用形成的地形包括:人字形平整地表,中新世750 ~ 1100m高;坡面平坦,上新世早期,海拔450 - 600米;坡面平坦,上新世晚期,海拔300 - 400米;山墙平整面,上新世晚期—更新世早期,海拔150 ~ 250m;早-中更新世山门面,高50 - 120 m;空化侧面;第四纪裂缝和沟渠的空化翼;空化-侵蚀侧翼;新近系—第四纪崩塌侵蚀侧翼;新近纪-第四纪合成侵蚀翼;第四纪;3)河流形成的地形包括:河流陆架II级,晚更新世;全新世中期河架一级;河流堆积三角洲,全新世晚期,早期;河床及沿河床的低冲积地,全新世晚期,晚期;4)海洋形成的地形,包括:磨蚀-海相堆积面,早更新世-中更新世;磨料海陆堆积III级,晚更新世,早期;磨料海陆II级堆积,晚更新世,晚期;全新世中期海架ⅰ层,高5 ~ 10m;连接岛屿的沙堤表面,全新世晚期,早期;现代海滩经常被潮汐淹没;5)地形包括:海河混合作用形成的,包括:晚更新世、全新世晚期和中全新世河海三角洲(陆架);现代海沼泽平原;现代河沼泽平原;6)风形成的地形,包括:高程15 ~ 25 m沙丘地形类型;地势为沙质丘陵,海拔105米。每种地形类型都与不同的地质遗产有关:古生物遗产;地貌遗产;石头遗产……
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引用次数: 0
Enter by the Narrow Gate, for Getting New Perspective to Bring Modern Technology Into Order 从窄门进入,以获得新的视角,使现代技术进入秩序
Pub Date : 2023-06-11 DOI: 10.20849/jess.v6i1.1347
K. Awaya
One of the main causes of issues about the today’s situation of technology comes from a big mismatch between the new technology based on quantum mechanics (laws in the micro world) and the old perspective (mechanistic viewpoint in the macro world) for more than a half century. I explain this circumstance and show how to settle this problem by solving the so-called measurement problem of quantum mechanics. These give us a new perspective which unify the laws of macro and micro worlds and bring the current technology into order. To go this way would be to enter by the narrow gate.
半个多世纪以来,以量子力学(微观世界的规律)为基础的新技术与以宏观世界的机械观为基础的旧技术之间的巨大错位,是造成当今技术状况问题的主要原因之一。我解释了这种情况,并展示了如何通过解决所谓的量子力学测量问题来解决这个问题。这给了我们一个新的视角,统一了宏观和微观世界的规律,使现有的技术变得有序。走这条路就得从窄门进去。
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引用次数: 0
The Effects of Air Quality on Economic Activity in Indonesia 印尼空气质量对经济活动的影响
Pub Date : 2023-06-11 DOI: 10.20849/jess.v6i1.1348
P. Sasmita, A. Yani, Restiatun Restiatun
Air pollution may contribute to climate change in Indonesia, and it has the potential to undermine national economy over the long term due to the high expenses of dealing with environmental damage. The study's goal was to investigate and assess the impact of the industrial sector's GDRB, the mining sector's GDRB, the agricultural sector's GRDB, the level of education, the level of poverty, the quantity of trash generated, and the rate of deforestation on air quality in Indonesia. Secondary data types include time series and cross section (panel data) covering 34 provinces in Indonesia from 2016 to 2019. Descriptive statistical research approach using a step-by-step panel data regression model (fixed or random effect) with Chow test, Hausman test, and Lagrange multiplier method. Then, partly and concurrently, the classical assumption test and the statistical test (t-test and F-test). This research found that GRDB growth in the industrial sector has a positive significantly effect on air quality, GRDB growth in the mining sector has a negative significantly effect on air quality, GRDB growth in the agricultural sector has a negative significantly effect on air quality, and education level has a positive effect. Poverty level has no effect on air quality, waste generation has no effect positive on air quality, and deforestation rate has a negative significantly effect on air quality in Indonesia.
空气污染可能会导致印度尼西亚的气候变化,并且由于处理环境破坏的高昂费用,从长远来看,它有可能破坏国民经济。这项研究的目的是调查和评估印度尼西亚工业部门、矿业部门和农业部门的gdp、教育水平、贫困水平、产生的垃圾数量和森林砍伐率对空气质量的影响。二级数据类型包括2016 - 2019年印度尼西亚34个省的时间序列和横截面(面板数据)。描述性统计研究方法采用逐步面板数据回归模型(固定或随机效应),采用Chow检验、Hausman检验和拉格朗日乘数法。然后,部分地同时进行经典假设检验和统计检验(t检验和f检验)。本研究发现,工业部门GRDB增长对空气质量有显著的正向影响,采矿业GRDB增长对空气质量有显著的负向影响,农业部门GRDB增长对空气质量有显著的负向影响,教育水平对空气质量有正向影响。在印度尼西亚,贫困水平对空气质量没有影响,废物产生对空气质量没有正向影响,森林砍伐率对空气质量有显著的负向影响。
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引用次数: 0
Geotourism Observational Investigation From the Tourist Perspective: A Case Study of Kyushu Area Volcanoes, Japan 游客视角下的地质旅游观测调查——以日本九州地区火山为例
Pub Date : 2023-06-11 DOI: 10.20849/jess.v6i1.1353
J. Morrow, Ruth Kai
Of late, geotourism has become a viable part of global tourism; however, it is still a little-known tourism activity in many parts of the world. Geologists and volcanologists have been studying active volcanoes for years, but it is just in the past several decades that geotourism has become popular with those seeking an interesting and adventurous tourism experience. In the authors’ country of residence, Japan, volcanoes are part of the fabric of society in that many people live and work directly around active volcanoes, which have generated keen tourism interest there. Kyushu, where the authors live, contains four active volcanoes that are geo-related tourism destinations; several of them have been given UNESCO Global Geopark (UGGP) status. However, very little research has been conducted among these volcanoes, and, as such, the volcanoes receive little attention globally. To fill this gap, the authors decided to conduct observational investigations of each of the volcanoes to determine the potential for tourism activities. Findings show that all sites had potential to be interesting and informative destinations that offer interesting geo experiences with opportunities for environmental learning.
近年来,地质旅游已成为全球旅游的重要组成部分;然而,在世界上许多地方,它仍然是一项鲜为人知的旅游活动。地质学家和火山学家多年来一直在研究活火山,但只是在过去的几十年里,地质旅游才开始受到那些寻求有趣和冒险旅游经历的人的欢迎。在作者的居住国日本,火山是社会结构的一部分,因为许多人直接在活火山周围生活和工作,这在那里产生了浓厚的旅游兴趣。作者居住的九州州有四座活火山,是地理相关的旅游目的地;其中几个已被联合国教科文组织授予世界地质公园(UGGP)地位。然而,对这些火山进行的研究很少,因此,这些火山在全球范围内很少受到关注。为了填补这一空白,作者决定对每座火山进行观测调查,以确定旅游活动的潜力。研究结果表明,所有地点都有潜力成为有趣和信息丰富的目的地,提供有趣的地理体验和环境学习的机会。
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引用次数: 0
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Journal of Environmental Science Studies
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