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PREDICTING RETENTION EFFECTS OF A RIPARIAN ZONE IN AN AGRICULTURAL LANDSCAPE: IMPLICATION FOR EUTROPHICATION CONTROL OF THE TISZA RIVER, SERBIA 预测河岸带在农业景观中的保留效应:对塞尔维亚tisza河富营养化控制的影响
IF 1.2 4区 环境科学与生态学 Q4 ENVIRONMENTAL SCIENCES Pub Date : 2023-01-25 DOI: 10.26471/cjees/2023/018/238
Dušanka Cvijanović, O. Gavrilović, Maja Novković, D. Milošević, Milica Stojković Piperac, Ana A. Anđelković, Bojan Damnjanović, Ljubiša Denic, N. Drešković, S. Radulović
We explored the long-term influence of land use in the riparian zone on the water quality of the Tisza River, as a model of a non-wadeable lowland river located in a temperate, predominantly agricultural landscape. The analysis was based on a comparison of water quality variables between three river sites having contrasting, but constant land use patterns (in 500 m upstream radius) during the study period (2006-2019). While the first river site was characterized primarily by forests, the second and the third were dominated by urban and agricultural areas respectively. The variables which showed a significant difference between the pairs of sampling sites were oxygen saturation, nitrite nitrogen, total nitrogen, and orthophosphates. In contrast to urban and agricultural land, riparian forests showed a positive long-term influence on the river water quality. Natural and seminatural forests and shrubs had a favorable long-term influence on nutrient concentrations and oxygen regime of the Tisza River. However, the retention effects of orthophosphates and nitrite/nitrate content here were relatively low, demonstrating the limited performance of riparian buffers as a main or only management option in the Pannonian landscape, as the agricultural hotspot of Central and Eastern Europe. In conclusion, the riparian buffer assessment design applied in this study may be successfully used in pre-restoration monitoring, prior to the construction of buffer strips.
我们探索了河岸带土地利用对Tisza河水质的长期影响,作为位于温带、主要农业景观的不可涉水低地河流的模型。该分析基于研究期间(2006-2019年)三个河流站点之间的水质变量的比较,这些站点具有不同但不变的土地利用模式(上游500米半径范围内)。第一个河流遗址主要以森林为特征,而第二个和第三个河流遗址分别以城市和农业区为主。不同采样点间差异显著的变量为氧饱和度、亚硝酸盐氮、总氮和正磷酸盐。与城市和农业用地相比,河岸森林对河流水质的长期影响为正。天然和半天然森林和灌木对Tisza河的养分浓度和氧状态有有利的长期影响。然而,这里的正磷酸盐和亚硝酸盐/硝酸盐含量的保留效应相对较低,表明河岸缓冲带作为潘诺尼亚景观的主要或唯一管理选择的性能有限,潘诺尼亚景观是中欧和东欧的农业热点。综上所述,本研究所采用的河岸缓冲评估设计可以成功地用于缓冲带建设之前的预恢复监测。
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引用次数: 0
THE EFFECT OF INCREASING DOSE OF VERMICOMPOST APPLICATION ON CADMIUM CONTAMINATED SOILS ON SOME SOIL ENZYME ACTIVITIES 镉污染土壤施用蚯蚓粪增施量对土壤某些酶活性的影响
IF 1.2 4区 环境科学与生态学 Q4 ENVIRONMENTAL SCIENCES Pub Date : 2023-01-25 DOI: 10.26471/cjees/2023/018/242
Ummahan Çetin Karaca, Omar Amjed Hasan Chalabee
Contamination of agricultural soils with heavy metals is a major problem in soil quality. When heavy metals reach food chain through agricultural soils and plants, they pose a great threat to the health of humans and other living organisms. The enzymes are generally less active in contaminated soils due to exposure to heavy metals. The aim of this research was to investigate the effect of increasing vermicompost doses on some biological soil properties in artificially contaminated soils. In the study, increasing doses of vermicompost (0-2.5-5-10%) were added to soil artificially polluted with Cd (0, 5 and 10 mg.kg-1). Untreated soil was used as a control. After the vermicompost application, the soils were brought to 70% of the field capacity and incubated at 28-30oC in laboratory conditions. Samples were taken from the incubated soils at 0-5-10-15-30-45-60-75-90-120th days. Alkaline phosphatase, arylsulfatase, dehydrogenase, urease, catalase enzyme activities were analyzed in soil samples at the end of each incubation period. The effects of increasing doses of vermicompost application to artificially contaminated soils on some biological properties of the soil showed differences, and these differences were found to be statistically significant (p<0.01). The lowest values of soil enzyme activities (alkaline phosphatase, arylsulfatase, dehydrogenase, urease and catalase enzyme activities) were determined in soil samples contaminated with Cd and not treated with vermicompost until the end of incubation. The highest enzyme activities values were found in soils contaminated with 5 and 10 mg.kg-1 Cd that were treated with 10% vermicompost. Enzyme activities in incubated soil increased with increasing doses of vermicompost. It was determined that the addition of vermicompost to soils contaminated with Cd significantly reduced the toxic effects of Cd.
农业土壤重金属污染是土壤质量的一个主要问题。当重金属通过农业土壤和植物进入食物链时,它们对人类和其他生物的健康构成巨大威胁。由于接触重金属,这些酶在受污染的土壤中的活性通常较低。本研究的目的是研究在人工污染土壤中增加蚯蚓堆肥剂量对某些生物土壤特性的影响。本研究以未经处理的土壤为对照,在Cd(0、5和10mg.kg-1)人为污染的土壤中添加不同剂量的蚯蚓堆肥(0-2.5-5-10%)。施用蚯蚓堆肥后,土壤达到田间容量的70%,并在实验室条件下在28-30℃下培养。在0-5-10-15-30-45-60-75-90-120天从培养的土壤中取样。在每个培养期结束时,对土壤样品中的碱性磷酸酶、芳基硫酸酯酶、脱氢酶、脲酶、过氧化氢酶活性进行了分析。在人工污染土壤中增加施用蚯蚓堆肥剂量对土壤某些生物特性的影响存在差异,土壤酶活性(碱性磷酸酶、芳基硫酸酯酶、脱氢酶、脲酶和过氧化氢酶活性)在镉污染的土壤样品中最低,直到培养结束才用蚯蚓堆肥处理。在5和10mg.kg-1 Cd污染的土壤中,用10%的蚯蚓堆肥处理的酶活性值最高。孵化土壤中的酶活性随着蚯蚓堆肥剂量的增加而增加。研究表明,在镉污染土壤中添加蚯蚓堆肥可显著降低镉的毒性作用。
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引用次数: 0
IMPROVEMENT OF THE HYDRAULIC PROPERTIES OF SALINE-SODIC SOIL EXPOSED TO FREEZING-THAWING USING SEWAGE SLUDGE AND WETTING-DRYING PROCESS WITH WASTEWATER 利用污水污泥和污水干湿法改善冻融盐碱土的水力特性
IF 1.2 4区 环境科学与生态学 Q4 ENVIRONMENTAL SCIENCES Pub Date : 2023-01-25 DOI: 10.26471/cjees/2023/018/239
M. Altun, Abdoul Nasser Aboubacar DAN BADAOU, A. DOĞAN DEMİR, U. Sahin, F. M. Kiziloglu, Serap Diler
Soil improvement practices are needed to protect weakly aggregated saline-sodic soils in cold regions from the negative effects of freezing-thawing events. Amelioration of these soils by adding sewage sludge and applying wetting–drying process with wastewater can be a practical application due to aggregation to be increased with increase in organic matter. Therefore, a laboratory experiment has been conducted to determine the effects on soil properties with three stabilized sewage sludge doses (0, 50, 100 Mg ha−1), two freeze-thaw cycles (5 and 10 times), two wetting-drying intervals (4 and 8 days) and two water types (freshwater and recycled wastewater). The negative effects of freezing-thawing on organic matter and aggregate stability were determined. However, while sewage sludge increased organic matter, aggregate stability, salinity, exchangeable K and Ca+Mg contents, cation exchange capacity (CEC), it was instrumental in inducing a lower pH, exchangeable Na, CaCO3 and exchangeable sodium percentage (ESP), and thus improved field capacity and hydraulic conductivity. Wetting-drying with 8-day intervals and wastewater improved organic matter also. Therefore, it could be concluded that the improvement of hydraulic properties can be attributed to achieving better aggregate stability with increased organic matter in soil from sewage sludge. Long intervals of wetting-drying and recycled wastewater can promote good results as well. However, improving the findings with the proposed treatments in the outer field conditions of the regions exposed to freezing-thawing events will provide more practical use.
为了保护寒冷地区弱团聚盐碱土免受冻融事件的负面影响,需要采取土壤改良措施。通过添加污水污泥和对废水进行干湿处理来改善这些土壤是一种实际应用,因为随着有机质的增加,聚集会增加。因此,进行了一项实验室试验,以确定三种稳定污泥剂量(0、50和100 Mg ha−1)、两次冻融循环(5次和10次)、两次干湿间隔(4天和8天)和两种水类型(淡水和再生废水)对土壤特性的影响。确定了冻融对有机质和团聚体稳定性的负面影响。然而,污水污泥在增加有机质、骨料稳定性、盐度、交换性K和Ca+Mg含量、阳离子交换容量(CEC)的同时,还有助于降低pH、交换性Na、CaCO3和交换性钠百分比(ESP),从而提高田间容量和水力导电性。8天的干湿间隔和废水处理也能改善有机物质的含量。因此,可以得出结论,水力性能的改善可归因于污水污泥土壤中有机质含量的增加,从而获得更好的团聚体稳定性。长时间的干湿间隔和废水回收也能促进良好的效果。然而,在冻融事件暴露地区的外部野外条件下,通过提出的处理方法来改进研究结果将提供更多的实际应用。
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引用次数: 0
PERIGLACIAL RELIEF PHENOMENA ON MOUNT VARDENIK (SOUTHEASTERN SERBIA) 瓦尔德尼克山(塞尔维亚东南部)冰缘地貌现象
IF 1.2 4区 环境科学与生态学 Q4 ENVIRONMENTAL SCIENCES Pub Date : 2023-01-25 DOI: 10.26471/cjees/2023/018/246
D. Nesic, Uroš V. Milinčić, M. Milinčić
In the medium-high mountains of Serbia (1,000-2,000 m.a.s.l), sporadic periglacial relief forms occur, which is also the case with Mount Vardenik (1,876 m.high), a mountain in the southeast of Serbia. During reconnaissance, certain relict and sub-recent periglacial phenomena and landforms in the highest part of the mountain have been identified: block slides, rock flows, thermogenic landslides in springs, nivation-induced relief and in one location cryoplanation terraces. Sparsely clustered and individual occurrences of frost splitting and solifluction of the land surface and small areas with grass turf indicate contemporary signs of sporadically present seasonal frost and freeze-thaw cycles. Periglacial morphology and its processes have been recorded and investigated using a qualitative geomorphological procedure. The main problem is the origin of periglacial phenomena (occurrences and landforms) of the relief, considering that the analysis of the contemporary climate, geoecological properties and anthropogenic activities indicate that there are no condi-tions for the existence and development of a contemporary periglacial environment on the mountain. The problem was analyzed considering the climate change in general and, in particular, geoecological conditions created under the influence of human activities. Due to the observed sporadic relict and sub-recent periglacial relief on Mount Vardenik, in contemporary conditions the periglacial environment of this area can be consid-ered as relict or as a phenomenon bordering the limits of differentiation. The relict property also results from the fact that on the mountain, due to the contemporary climate and changed geoecological conditions, the transition zone of the periglacial environment cannot be distinguished.
在塞尔维亚的中高山(海拔1000-2000米),偶尔会出现冰缘地貌,塞尔维亚东南部的瓦尔德尼克山(海拔1876米)也是如此。在勘察过程中,已经确定了该山最高部分的某些残余和亚新近的冰缘现象和地貌:块体滑坡、岩石流、泉中的产热滑坡、雪引起的起伏和一个位置的冷冻阶地。地表和有草皮的小块区域出现的零星聚集性和个别的霜裂和融冰现象表明了零星出现的季节性霜冻和冻融循环的当代迹象。利用定性地貌程序记录和研究了冰缘地貌及其过程。主要问题是地貌的冰缘现象(发生和地貌)的起源,考虑到对当代气候、地质生态特性和人类活动的分析表明,山上不存在当代冰缘环境的存在和发展条件。分析这个问题时考虑到了一般的气候变化,特别是人类活动影响下产生的地质生态条件。由于在瓦尔德尼克山上观察到零星的遗迹和近现代的冰缘地貌,在当代条件下,该地区的冰缘环境可以被视为遗迹或接近分化极限的现象。遗迹的性质还源于在山上,由于当代气候和地质生态条件的变化,无法区分冰缘环境的过渡带。
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引用次数: 0
DYNAMICS OF SOIL ORGANIC CARBON AFTER MORE THAN 25 YEARS OF FARMING IN THE DANUBE DELTA 在多瑙河三角洲耕作超过25年后,土壤有机碳的动态变化
IF 1.2 4区 环境科学与生态学 Q4 ENVIRONMENTAL SCIENCES Pub Date : 2023-01-25 DOI: 10.26471/cjees/2023/018/236
V. Mocanu, S. Dumitru, C. Paltineanu, Horia Domnariu
Soil organic carbon (SOC) is an important parameter in the context of global warming, and a special attention should be given to its dynamics. The purpose of this paper is to test the existence of SOC losses from the soils taken for farming for more than 25 years in some areas of the Danube Delta. Another objective is to quantify such SOC losses if they exist. The studied soils belong to two land reclamation areas, Carasuhat and Dunavat, from the Danube Delta. Data of present-day SOC stocks were compared to the SOC stocks calculated for the period until year 1996 for the same soil units in order to assess the dynamics of SOC losses for more than 25 years. We have found that a specific process was noted for the organic soils, Histosols, which were turned into histic soils after farming, meaning that there was a significant decrease in SOC pool. Thus, SOC losses due to farming were maximum for Histosols, and SOC stocks were highly significantly lower in 2022 versus 1996, due to increasing mineralization processes of organic matter and subsequent greenhouse gas emissions that occurred in cropland areas. Relationships have been found quantifying SOC losses versus the original 1996 stocks, confirming that Histosols, containing the maximum SOC stocks, present the highest risk of degradation. Lowering of the ground water and consequently the intensified oxidation of peat are very important factors in SOC losses beside the agricultural land use works. Policy makers, decision makers and stake holders should promote conservation of the natural landscape of the Danube Delta in order to increase SOC stocks and decrease CO2 and other greenhouse gas emissions into the atmosphere. Maintaining the former SOC stock at the present-day level and enhancing new organic C sequestration in the renatured parts of the less fertile Delta soils could contribute to global warming mitigation in the future and to supply agricultural products in the cropland already in use. Future research in characteristic stationary sites of the Danube Delta, especially in the farmland area, is recommended to improve our knowledge on SOC evolution.
土壤有机碳(SOC)是全球变暖背景下的一个重要参数,其动态变化应引起重视。本文的目的是测试多瑙河三角洲一些地区超过25年的农业土壤中有机碳损失的存在。另一个目标是量化这种SOC损失,如果它们存在的话。所研究的土壤属于多瑙河三角洲的卡拉苏哈特和杜纳瓦特两个土地复垦区。为了评价25年多来土壤有机碳损失的动态,将当前土壤有机碳储量与1996年以前相同土壤单元的有机碳储量进行了比较。我们发现,有机土壤(Histosols)在耕作后发生了一个特殊的转变过程,这意味着有机碳库显著减少。因此,由于耕作导致的有机碳损失对梭菌来说是最大的,并且由于有机质矿化过程的增加以及随后在农田地区发生的温室气体排放,2022年有机碳储量显著低于1996年。与1996年原始种群相比,已经发现了量化SOC损失的关系,证实含有最大SOC储量的Histosols具有最高的退化风险。地下水的降低和泥炭氧化的加剧是农业用地工程以外土壤有机碳损失的重要因素。政策制定者、决策者和利益相关者应促进多瑙河三角洲自然景观的保护,以增加有机碳储量,减少二氧化碳和其他温室气体的排放。将以前的有机碳储量维持在目前的水平,并在较不肥沃的三角洲土壤的再生部分加强新的有机碳封存,可能有助于在未来减缓全球变暖,并为已经在使用的农田提供农产品。建议今后在多瑙河三角洲特征静止点,特别是农田地区开展研究,以提高我们对有机碳演化的认识。
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引用次数: 1
EFFECTS OF HEAVY METALS, CONTAINED IN FLOTATION TAILINGS, ON PLANTS USED IN REVEGETATION 浮选尾矿中重金属对植被植物的影响
IF 1.2 4区 环境科学与生态学 Q4 ENVIRONMENTAL SCIENCES Pub Date : 2023-01-25 DOI: 10.26471/cjees/2023/018/243
O. Jelea, C. Baciu
During the processing of precious and base metal ores from the Baia Mare mining area, which contained Au, Ag, Cu, Pb and Zn, large amounts of flotation tailings resulted, which were deposited in the Bozânta tailings management facility, located between Săsar and Bozânta Mare villages, 4 km west of Baia Mare. Due to the presence of minerals containing metal sulphides (mainly pyrite), the acid rock drainage (ARD) has become very active, catalysed by iron- and sulphur-oxidizing bacteria, which naturally occur at these sites. Decreasing the surface of the pond as a result of evaporation, combined with the increase of the beach surface and the absence of any protection at the embankment ridge, led to the entrainment of the tailings by wind at considerable distances. They often end up in neighbouring settlements, especially in the two mentioned villages, as a result of prevailing winds from the NE-SW direction. The purpose of the research was to test the resistance of some plant species (Sinapis alba L. – white mustard; Trifolium pratense L. – red clover and Lolium perenne L. – ray grass) to the conditions generated by the tailings on the surface of the depot, in order to create a vegetation cover with a role in diminishing tailings discharges in the adjacent areas. There were tested the effects of the industrial eluate (acid mine water, pH 4.3), obtained from the tailings pond, over seed germination parameters: germination capacity (GC); germinative energy (GE) and relative seed germination (RG). The results of the tests pointed out that the least affected was white mustard: GC – 95.3%; the differences in the values obtained in the control samples and the GE test – 5.3%; the results for RG – 99.3%, confirm that the white mustard seeds were the least influenced by the industrial eluate, followed by ray grass and red clover. In the tests for plant growth on the tailings pond, 5 experimental variants were used: a) soil (S); b) flotation tailings (T); c) mixture of flotation tailings and soil (T+S); d) mixture of flotation tailings and organo-zeolitic material (T+OZ); e) mixture of flotation tailings, organo-zeolitic material and soil (T+OZ+S). It is recommended to use the T+OZ+S mixture on the pond surface and sowing with Sinapis alba and Trifolium pratense. For both species, double seed sowing is recommended.
Baia Mare矿区的贵金属和贱金属矿石含有Au、Ag、Cu、Pb和Zn,在加工过程中,产生了大量浮选尾矿,这些尾矿沉积在Bozânta尾矿管理设施中,该设施位于Săsar和BogântaMare村之间,位于Baia Mare以西4公里处。由于存在含有金属硫化物(主要是黄铁矿)的矿物,酸性岩石排水(ARD)在铁和硫氧化细菌的催化下变得非常活跃,这些细菌自然存在于这些地点。蒸发导致池塘表面减少,再加上海滩表面的增加和堤脊没有任何保护,导致风在相当长的距离内夹带尾矿。由于东北-西南方向的盛行风,它们经常会出现在邻近的定居点,尤其是上述两个村庄。本研究的目的是测试一些植物物种(Sinapis alba L.——白芥菜;Trifolium pratense L.——红三叶草和Lolium perenne L.——射线草)对尾矿库表面尾矿产生的条件的抵抗力,以形成植被覆盖,减少邻近地区的尾矿排放。测试了从尾矿库获得的工业洗脱液(酸性矿井水,pH 4.3)对种子发芽参数的影响:发芽能力(GC);发芽能(GE)和相对种子发芽率(RG)。测试结果指出,受影响最小的是白芥末:GC–95.3%;对照样品和GE试验中获得的值的差异——5.3%;RG–99.3%的结果证实,白芥菜种子受工业洗脱液的影响最小,其次是射线草和红三叶草。在尾矿库上的植物生长测试中,使用了5种实验变体:a)土壤(S);b) 浮选尾矿(T);c) 浮选尾矿与土壤的混合物(T+S);d) 浮选尾矿和有机沸石材料的混合物(T+OZ);e) 浮选尾矿、有机沸石材料和土壤的混合物(T+OZ+S)。建议在池塘表面使用T+OZ+S混合物,并与白水仙和红车轴草一起播种。对于这两个物种,建议双种子播种。
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引用次数: 0
EOCHEMICAL, MINERALOGICAL AND DIAGENETIC CHARACTERISTICS OF MARINE CHERT IN THE HATAY REGION, S-TURKEY: ITS ORIGIN AND DEPOSITIONAL ENVIRONMENT 土耳其哈塔伊地区海相燧石的地球化学、矿物学和成岩特征及其成因与沉积环境
IF 1.2 4区 环境科学与生态学 Q4 ENVIRONMENTAL SCIENCES Pub Date : 2023-01-25 DOI: 10.26471/cjees/2023/018/241
Meryem YEŞİLOT KAPLAN
Trace elements and rare earth elements (REEs) were studied to determine the formation of chert and siliceous limestones, which are predominantly observed in the Okçular formation. Cherts are divided into four types according to their varying forms depending on the deposition and diagenesis stages: (Type-I) layered cherts formed by direct precipitation from sea water, (Type-II) nodular cherts with rim formed by replacement, (Type-III) homogeneous chert nodules without rim, (Type-IV) chert micro nodules with high porosity. The porosity of stylolite-fracture networks and the chemical composition of seawater played a role in the formation of different types and sizes in cherts. The rim of Type II nodular cherts has significant color changes and porosity up to 20%. Anomalies of major and trace elements, especially La, Y, Sc, Ce, Th, U and Gd values, indicate direct deposition and replacement of early diagenetic pelagic deposits of cherts in the oxidized marine environment. Total (REE)+Y values, high LREE/HREE ratio and low Ce values indicate that dissolved seawater of chemical or biogenetic origin has a role in silicification. According to the similarity of the hierarchical cluster analysis of the chemical contents of the Okçular formation and the ophiolites, the silicon in the chert formation originates from the ophiolites.
研究了微量元素和稀土元素(REEs),以确定燧石和硅质石灰石的形成,这些石灰石主要在Okçular地层中观察到。根据沉积和成岩阶段的不同,燧石的形态可分为四种:(I型)海水直接沉淀形成的层状燧石;(II型)置换形成的带边缘的结节状燧石。缝合线断裂网络的孔隙度和海水的化学成分在燧石中形成不同类型和大小的燧石中起着一定作用。II型结节状燧石的边缘具有显著的颜色变化和高达20%的孔隙率。主元素和微量元素的异常,特别是La、Y、Sc、Ce、Th、U和Gd值的异常,表明在氧化的海洋环境中,燧石的早成岩远洋沉积物直接沉积和置换。总(REE)+Y值、高LREE/HREE比和低Ce值表明化学或生物成因的溶解海水在硅化中起作用。根据Okçular组和蛇绿岩化学成分的层次聚类分析的相似性,燧石组中的硅来源于蛇绿岩。
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引用次数: 0
INESITE, HUBEITE, RUIZITE, APOPHYLLITE, AND MANGANOAN ILVAITE FROM CAVNIC, EASTERN CARPATHIANS, ROMANIA 来自卡尼克、喀尔巴阡山东部和罗马尼亚的伊奈石、胡贝石、锐锌石、脱叶石和锰铝石
IF 1.2 4区 环境科学与生态学 Q4 ENVIRONMENTAL SCIENCES Pub Date : 2022-08-31 DOI: 10.26471/cjees/2022/017/230
P. Hîrtopanu, D. Dumitraş, Ştefan Marincea, N. Călin
The rare minerals, inesite, Ca2Mn2+7Si10O28(OH)2·5H2O, hubeite, Ca2Mn2+Fe3+Si4O12(OH)·2H2O, and ruizite, Ca2Mn3+Si4O11(OH)4·2H2O, were determined, for the first time, by optical and XRD analyses, at Cavnic (Baia Mare Neogene metallogenetic district, Eastern Carpathians, Romania) in a gold-bearing, base metal deposit. Inesite was refined as triclinic, in space group P1 (2), and has the following unit-cell parameters (refined from X-ray powder diffraction data): a = 8.927(7) Å, b = 9.245(8) Å, c = 11.954(9) Å; α = 91.80(2)°, β = 132.60(1)°, γ = 94.37(3)°, V = 719.45(12)Å3. Hubeite was also refined as triclinic, in space group P1, and has as unit-cell parameters: a = 9.960(7) Å, b = 13.870(9) Å, c = 6.562(4) Å, V = 601.19(17) Å3; α = 133.19(5)°, β =101.50(3)°, γ = 66.27(4)°. Ruizite was refined on a monoclinic cell, space group A2 (5) and has the following unit-cell parameters: a = 11.974(9)Å, b = 6.175(5)Å, c = 9.052(7)Å, V = 669.12 (9)Å3; β = 91.34(3)°. Apophyllite, KCa4Si8O20(F,OH)·8H2O, is tetragonal, space group P4/mnc (128), and has a = 8.960(3) Å, c = 15.767(7) Å and V = 1265.80(11) Å3. The terms identified represent a solid solutions series between the two end-members, fluorapophyllite and hydroxyapophyllite. Manganoan ilvaite, CaFe2+Fe3+(Fe2+, Mn)(Si2O7)(O)(OH), crystallizes in the space group Pnam (62), and has as unit-cell parameters: a = 13.008(7) Å; b = 8.865(5) Å; c = 5.845(3) Å, V = 674.02(9) Å3. The textural relations of inesite /hubeite/ruizite /apophyllite/manganoan ilvaite assemblage show that the oldest mineral is manganoan ilvaite, as inesite and hubeite overgrow and engulf this mineral. Hubeite is indicative for mildly oxidizing crystallization, conditions. Both hubeite and ruizite are Ca-Mn hydrated silicates. However, all Mn is divalent in hubeite and trivalent in ruizite. In addition, ruizite is Fe-free, whereas hubeite contains significant Fe3+. Ruizite Ca2Mn3+Si4O11(OH)4.2H2O was formed under higher oxidizing conditions as compared with hubeite. Sudoite and specularite also occurs in this oxidized assemblage. Sudoite, Mg2(Al.Fe3+)3Si3O10(OH)8, is monoclinic and has as space group C2m (12) and as unit-cell parameters a = 5.237(2) Å, b = 9.070(5) Å, c = 14.285(8), β = 97.00, V = 673.47(14) Å3. The carbonate closely associated to this assemblage is a Mn- and Ca-bearing siderite, which crystallizes in space group R-3c (167), having as unit-cell parameters: a = 4.694(1) Å; c = 15.386(5) Å, and V = 293.53(13) Å3. The secondary minerals occurring in this assemblage as determined by X-ray powder diffraction are: gold, sphalerite, pyrite, and galena. The origin of vein assemblage inesite /hubeite /ruizite /apophyllite is hydrothermal (epithermal); there exist indications of a genesis at low temperature, around 200°C. The assemblage indicated before is grown on manganoan ilvaite, which is the oldest mineral in this association. There are no signs of the genesis of manganoan ilvaite /inesite /hubeite /ruizite assemblage at the expens
在罗马尼亚东喀尔巴阡山脉巴亚马雷新近系成矿区Cavnic,首次用光学和x射线衍射方法测定了含金基本金属矿床中稀有矿物钙镁石(Ca2Mn2+7Si10O28(OH)2·5H2O)、胡贝石(Ca2Mn2+Fe3+Si4O12(OH)·2H2O)和瑞子石(Ca2Mn3+Si4O11(OH)4·2H2O)。Inesite被细化为三斜,在空间群P1(2)中,具有以下单位胞参数(从x射线粉末衍射数据中细化):a = 8.927(7) Å, b = 9.245(8) Å, c = 11.954(9) Å;α= 91.80(2)°,β= 132.60(1)°,γ= 94.37(3)°,V = 719.45 (12) A3。Hubeite也被细化为三斜,在空间群P1中,其单位胞参数为:a = 9.960(7) Å, b = 13.870(9) Å, c = 6.562(4) Å, V = 601.19(17) Å3;α = 133.19(5)°,β =101.50(3)°,γ = 66.27(4)°。瑞兹特在单斜细胞空间群A2(5)上提纯,其胞元参数为:a = 11.974(9)Å, b = 6.175(5)Å, c = 9.052(7)Å, V = 669.12 (9)Å3;β = 91.34(3)°。apophylite KCa4Si8O20(F,OH)·8H2O为四边形,空间群P4/mnc (128), a = 8.960(3) Å, c = 15.767(7) Å, V = 1265.80(11) Å3。所确定的术语代表两个端元之间的固溶体系列,氟磷灰石和羟基磷灰石。锰酸盐CaFe2+Fe3+(Fe2+, Mn)(Si2O7)(O)(OH)在Pnam(62)空间群中结晶,其晶胞参数为:a = 13.008(7) Å;B = 8.865(5) Å;c = 5.845(3) Å, V = 674.02(9) Å3。铁辉石/胡白石/瑞子石/刺绿石/锰铁云母组合的结构关系表明,铁辉石和胡白石包裹着最古老的锰铁云母矿物。湖白石为指示性轻度氧化结晶,有条件。胡白石和瑞锌矿均为钙锰水合硅酸盐。然而,所有的锰在胡白石中是二价的,在瑞子石中是三价的。此外,瑞子石不含铁,而胡贝石含铁较多。瑞子石Ca2Mn3+Si4O11(OH)4.2H2O在较高的氧化条件下生成。在这个氧化组合中也有苏多岩和镜铁矿。苏多石Mg2(Al.Fe3+)3Si3O10(OH)8为单斜晶,空间群为C2m(12),胞元参数为a = 5.237(2) Å, b = 9.070(5) Å, c = 14.285(8), β = 97.00, V = 673.47(14) Å3。与该组合密切相关的碳酸盐是一种含锰和含钙菱铁矿,在空间群R-3c(167)中结晶,其单胞参数为:a = 4.694(1) Å;c = 15.386(5) Å, V = 293.53(13) Å3。经x射线粉末衍射测定,该组合中的次生矿物有:金、闪锌矿、黄铁矿和方铅矿。脉状组合辉绿岩/胡贝岩/瑞子岩/刺绿岩的成因为热液(浅成热液);存在低温成因的迹象,约为200°C。前面指出的组合生长在锰铁上,这是该组合中最古老的矿物。未发现锰矿/钛辉石/胡贝石/瑞子石组合的成因,而高T无水锰矿物如菱铁矿或约翰长石的形成则被忽略。
{"title":"INESITE, HUBEITE, RUIZITE, APOPHYLLITE, AND MANGANOAN ILVAITE FROM CAVNIC, EASTERN CARPATHIANS, ROMANIA","authors":"P. Hîrtopanu, D. Dumitraş, Ştefan Marincea, N. Călin","doi":"10.26471/cjees/2022/017/230","DOIUrl":"https://doi.org/10.26471/cjees/2022/017/230","url":null,"abstract":"The rare minerals, inesite, Ca2Mn2+7Si10O28(OH)2·5H2O, hubeite, Ca2Mn2+Fe3+Si4O12(OH)·2H2O, and ruizite, Ca2Mn3+Si4O11(OH)4·2H2O, were determined, for the first time, by optical and XRD analyses, at Cavnic (Baia Mare Neogene metallogenetic district, Eastern Carpathians, Romania) in a gold-bearing, base metal deposit. Inesite was refined as triclinic, in space group P1 (2), and has the following unit-cell parameters (refined from X-ray powder diffraction data): a = 8.927(7) Å, b = 9.245(8) Å, c = 11.954(9) Å; α = 91.80(2)°, β = 132.60(1)°, γ = 94.37(3)°, V = 719.45(12)Å3. Hubeite was also refined as triclinic, in space group P1, and has as unit-cell parameters: a = 9.960(7) Å, b = 13.870(9) Å, c = 6.562(4) Å, V = 601.19(17) Å3; α = 133.19(5)°, β =101.50(3)°, γ = 66.27(4)°. Ruizite was refined on a monoclinic cell, space group A2 (5) and has the following unit-cell parameters: a = 11.974(9)Å, b = 6.175(5)Å, c = 9.052(7)Å, V = 669.12 (9)Å3; β = 91.34(3)°. Apophyllite, KCa4Si8O20(F,OH)·8H2O, is tetragonal, space group P4/mnc (128), and has a = 8.960(3) Å, c = 15.767(7) Å and V = 1265.80(11) Å3. The terms identified represent a solid solutions series between the two end-members, fluorapophyllite and hydroxyapophyllite. Manganoan ilvaite, CaFe2+Fe3+(Fe2+, Mn)(Si2O7)(O)(OH), crystallizes in the space group Pnam (62), and has as unit-cell parameters: a = 13.008(7) Å; b = 8.865(5) Å; c = 5.845(3) Å, V = 674.02(9) Å3. The textural relations of inesite /hubeite/ruizite /apophyllite/manganoan ilvaite assemblage show that the oldest mineral is manganoan ilvaite, as inesite and hubeite overgrow and engulf this mineral. Hubeite is indicative for mildly oxidizing crystallization, conditions. Both hubeite and ruizite are Ca-Mn hydrated silicates. However, all Mn is divalent in hubeite and trivalent in ruizite. In addition, ruizite is Fe-free, whereas hubeite contains significant Fe3+. Ruizite Ca2Mn3+Si4O11(OH)4.2H2O was formed under higher oxidizing conditions as compared with hubeite. Sudoite and specularite also occurs in this oxidized assemblage. Sudoite, Mg2(Al.Fe3+)3Si3O10(OH)8, is monoclinic and has as space group C2m (12) and as unit-cell parameters a = 5.237(2) Å, b = 9.070(5) Å, c = 14.285(8), β = 97.00, V = 673.47(14) Å3. The carbonate closely associated to this assemblage is a Mn- and Ca-bearing siderite, which crystallizes in space group R-3c (167), having as unit-cell parameters: a = 4.694(1) Å; c = 15.386(5) Å, and V = 293.53(13) Å3. The secondary minerals occurring in this assemblage as determined by X-ray powder diffraction are: gold, sphalerite, pyrite, and galena. The origin of vein assemblage inesite /hubeite /ruizite /apophyllite is hydrothermal (epithermal); there exist indications of a genesis at low temperature, around 200°C. The assemblage indicated before is grown on manganoan ilvaite, which is the oldest mineral in this association. There are no signs of the genesis of manganoan ilvaite /inesite /hubeite /ruizite assemblage at the expens","PeriodicalId":55272,"journal":{"name":"Carpathian Journal of Earth and Environmental Sciences","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2022-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48200611","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}
引用次数: 0
ASSESSING GROUNDWATER VULNERABILITY TO AGRICULTURE CONTAMINATION IN A SEMI-ARID ENVIRONMENT USING SI AND GOD MODELS, CASE OF BABAR BASIN, ALGERIA 利用SI和GOD模型评估半干旱环境中地下水对农业污染的脆弱性&以阿尔及利亚巴巴尔盆地为例
IF 1.2 4区 环境科学与生态学 Q4 ENVIRONMENTAL SCIENCES Pub Date : 2022-08-31 DOI: 10.26471/cjees/2022/017/228
A. Sedrati, Hichem Chenaker
The aquifer of the plain of Babar, with a very large area of around 355,000 ha, is of a great economic importance because it is used for irrigation and domestic consumption. The aquifer zone is mainly occupied by agricultural areas characterized by an increasing use of chemical fertilizers, threatening the quality of groundwater. The study of the vulnerability to pollution of this water table was carried out by applying the GOD and SI methods in a GIS environment. The comparison of the vulnerability maps obtained shows that the recovery rates are very different, but they have a certain degree of similarity in space, both methods show a low vulnerability to agriculture pollution. In terms of vulnerability characterization, the GOD method provides more representative information.
巴巴尔平原的含水层面积很大,约为355 000公顷,具有重要的经济意义,因为它用于灌溉和家庭消费。含水层主要被农业地区所占据,其特点是化肥的使用日益增加,威胁着地下水的质量。在GIS环境下,应用GOD和SI方法对该地下水位的污染脆弱性进行了研究。对得到的脆弱性图进行对比,发现恢复速率差异较大,但在空间上具有一定的相似性,两种方法对农业污染的脆弱性均较低。在漏洞表征方面,GOD方法提供了更具代表性的信息。
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引用次数: 0
ASSESSMENT OF RIVER SEDIMENT QUALITY ACCORDING TO THE EU WATER FRAMEWORK DIRECTIVE IN MOUNTAINOUS FLUVIAL CONDITIONS. A CASE STUDY IN THE UPPER TISA AREA, DANUBE RIVER BASIN 根据欧盟水框架指令对山区河流条件下的河流沉积物质量进行评估。多瑙河流域蒂萨河上游地区的个案研究
IF 1.2 4区 环境科学与生态学 Q4 ENVIRONMENTAL SCIENCES Pub Date : 2022-08-31 DOI: 10.26471/cjees/2022/017/234
G. Damian, G. Iepure, Daniel Năsui, G. Jordan, Jasminka Alijagić, Danijel Ivanišević, L. Galović, Ioan Beres
Discharge of hazardous substances (HSs) in hydrographic basins represent a danger to aquatic biological activity and water supplies and can severely pollute surface water sediments. The increase of pollution in the Danube Basin requires the implementation of systematic monitoring and evaluation of the sediments quality as dictated by the EU Water Framework Directive. For this system development, applicable in mountainous conditions, the Upper Tisa region in the northwest part of Romania on the border with Ukraine, Hungary and Slovakia was selected as a test area. Sampling of overbank (floodplain) sediment, river bottom sediment and suspended sediment was carried out at 10 locations in the test area in order to analyze the concentration and distribution of eight metal(oid)s (Cu, Pb, Zn, Cd, Hg, Ni, Cr and As), in addition to 3 organic components (anthracene, fluoranthene, benzo(e)pyrene) as hazardous substances (HSs). The sediment quality assessment was carried out according to the 2013/39/EU Directive and EU Water Framework Directive standards. Most of the analyzed HS concentrations in river bottom sediment and overbank (floodplain) sediments fall within the limits of environmental quality standards (EQS). As, Cu, Pb, and Zn tend to exceed the EQS at some locations. The highest exceedances were recorded for Pb, for which contents of up to 987 mg/kg were detected. The highest contents were found in the overbank sediments sampled, and the lowest in river bottom sediments, which may indicate historical pollution. Mercury contents in overbank sediment samples exceed all standards, while cadmium content is below the international standards. Anthracene, fluoranthene and benzo(e)pyrene concentrations in overbank and bottom sediments comply with international standards. A few samples in suspended sediments slightly exceed the lowest environmental standard value (i.e., Romanian normal value). HS concentrations remain low in the suspended sediments showing that it is not the main transport route for pollution in this area. HS contents decrease gradually from upstream to downstream due to dilution along the river course. In the last testing point at Someș Aciua, the concentration of metal(oid)s measured in the sediments remain below the EQS limit values, thus there is no risk of transboundary pollution. The main source of metal(oid) contamination is historic base-metal ore mining and the associated mine waste sites in the Baia Mare and other mining areas scattered around the whole region. The main source of the studied organic compounds is the incomplete or low-temperature coal combustion processes that occur in households in rural areas
水文流域中有害物质的排放对水生生物活动和供水构成威胁,并可能严重污染地表水沉积物。多瑙河流域污染的增加要求按照欧盟水框架指令对沉积物质量进行系统监测和评估。对于适用于山区条件的系统开发,罗马尼亚西北部与乌克兰、匈牙利和斯洛伐克接壤的上蒂萨地区被选为试验区。在试验区的10个地点对河岸(漫滩)沉积物、河底沉积物和悬浮沉积物进行了采样,以分析8种金属(oid)(Cu、Pb、Zn、Cd、Hg、Ni、Cr和As)的浓度和分布,以及3种有机成分(蒽、荧蒽、苯并(e)芘)作为危险物质(HS)。沉积物质量评估是根据2013/39/EU指令和欧盟水框架指令标准进行的。河底沉积物和河漫滩沉积物中分析的大多数HS浓度都在环境质量标准(EQS)的范围内。As、Cu、Pb和Zn在某些位置往往超过EQS。铅超标率最高,检测到铅含量高达987毫克/公斤。取样的河岸沉积物中含量最高,河底沉积物中含量最低,这可能表明历史污染。河岸沉积物样品中的汞含量超过了所有标准,而镉含量低于国际标准。岸边和海底沉积物中蒽、荧蒽和苯并(e)芘的浓度符合国际标准。悬浮沉积物中的少数样品略高于最低环境标准值(即罗马尼亚正常值)。悬浮沉积物中的HS浓度仍然很低,这表明它不是该地区污染的主要输送途径。由于河道沿线的稀释作用,HS含量从上游到下游逐渐降低。在SomeșAciua的最后一个测试点,沉积物中测得的金属(oid)浓度仍低于EQS限值,因此没有跨界污染的风险。金属(oid)污染的主要来源是历史上的贱金属矿开采以及Baia Mare和整个地区其他矿区的相关矿山废料场。所研究的有机化合物的主要来源是农村家庭中发生的不完全或低温的煤炭燃烧过程
{"title":"ASSESSMENT OF RIVER SEDIMENT QUALITY ACCORDING TO THE EU WATER FRAMEWORK DIRECTIVE IN MOUNTAINOUS FLUVIAL CONDITIONS. A CASE STUDY IN THE UPPER TISA AREA, DANUBE RIVER BASIN","authors":"G. Damian, G. Iepure, Daniel Năsui, G. Jordan, Jasminka Alijagić, Danijel Ivanišević, L. Galović, Ioan Beres","doi":"10.26471/cjees/2022/017/234","DOIUrl":"https://doi.org/10.26471/cjees/2022/017/234","url":null,"abstract":"Discharge of hazardous substances (HSs) in hydrographic basins represent a danger to aquatic biological activity and water supplies and can severely pollute surface water sediments. The increase of pollution in the Danube Basin requires the implementation of systematic monitoring and evaluation of the sediments quality as dictated by the EU Water Framework Directive. For this system development, applicable in mountainous conditions, the Upper Tisa region in the northwest part of Romania on the border with Ukraine, Hungary and Slovakia was selected as a test area. Sampling of overbank (floodplain) sediment, river bottom sediment and suspended sediment was carried out at 10 locations in the test area in order to analyze the concentration and distribution of eight metal(oid)s (Cu, Pb, Zn, Cd, Hg, Ni, Cr and As), in addition to 3 organic components (anthracene, fluoranthene, benzo(e)pyrene) as hazardous substances (HSs). The sediment quality assessment was carried out according to the 2013/39/EU Directive and EU Water Framework Directive standards. Most of the analyzed HS concentrations in river bottom sediment and overbank (floodplain) sediments fall within the limits of environmental quality standards (EQS). As, Cu, Pb, and Zn tend to exceed the EQS at some locations. The highest exceedances were recorded for Pb, for which contents of up to 987 mg/kg were detected. The highest contents were found in the overbank sediments sampled, and the lowest in river bottom sediments, which may indicate historical pollution. Mercury contents in overbank sediment samples exceed all standards, while cadmium content is below the international standards. Anthracene, fluoranthene and benzo(e)pyrene concentrations in overbank and bottom sediments comply with international standards. A few samples in suspended sediments slightly exceed the lowest environmental standard value (i.e., Romanian normal value). HS concentrations remain low in the suspended sediments showing that it is not the main transport route for pollution in this area. HS contents decrease gradually from upstream to downstream due to dilution along the river course. In the last testing point at Someș Aciua, the concentration of metal(oid)s measured in the sediments remain below the EQS limit values, thus there is no risk of transboundary pollution. The main source of metal(oid) contamination is historic base-metal ore mining and the associated mine waste sites in the Baia Mare and other mining areas scattered around the whole region. The main source of the studied organic compounds is the incomplete or low-temperature coal combustion processes that occur in households in rural areas","PeriodicalId":55272,"journal":{"name":"Carpathian Journal of Earth and Environmental Sciences","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2022-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49600115","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}
引用次数: 0
期刊
Carpathian Journal of Earth and Environmental Sciences
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