GEOLOGICAL FEATURES AND ORE- FORMING MODEL OF THE SHIZHUYUAN W-SN-MO-BI ORE DEPOSIT,HUNAN PROVINCE,CHINA

The Shizhuyuan W,Sn,Mo and Bi polymetallic ore deposit is one of the world famous superlarge ore deposits.The paper briefly introduced the geological setting and features of the ore deposit.Further,an ore－ forming model was put forward at the end of the paper.

Design of a sustainable development path in Chenzhou based on a knowledge graph

Sustainable urban development involves many fields with complex data types and rich semantic relationships,such as the economic,societal,and ecological fields.Knowledge graphs provide a new means for sustainable urban development research by leveraging their strengths in the construction of knowledge networks and display of knowledge associations.Focusing on Chenzhou,a resource-based city serving as a China’s Innovation Demonstration Zone for Sustainable Development Agenda,this study adopted a top-down approach,applying the“seven-step”and“skeleton”methods to construct an ontology for sustainable urban development through manual editing.A knowledge graph was constructed for Chenzhou’s sustainable development,comprising 515 nodes,3209 relations,and 28157 attributes.Sustainable measures and pathways were proposed based on this knowledge graph.The results showed that Chenzhou’s future sustainable development should focus on innovation,growth,emissions reduction,centering around high-quality and sustainable development.Promoting the transfer and transformation of scientific and technological achievements,accelerating the optimization and upgrading of industrial structures,and enhancing talent cultivation and recruitment will foster new quality productive forces,providing strong momentum and support for the high-quality and sustainable development of Chenzhou.To accelerate the green economy transition,Chenzhou should improve the market-oriented allocation system for resources and environmental factors,explore the“gross ecosystem product+eco environment-oriented development”project implementation model,encourage enterprises to adopt environmental,social,and governance principles,and foster synergies between supply and demand.Furthermore,coordinating Chenzhou’s low-carbon city pilot projects and constructing carbon sequestration pathways that leverage nature-based solutions will help implement the“dual carbon”actions and enhance the city’s ability to respond to climate change.

Petrogenesis of skarn in Shizhuyuan W-polymetallic deposit, southern Hunan,China:Constraints from petrology,mineralogy and geochemistry

Skarn is the main altered rock type and is of great importance to mineralization and ore-prospecting in the Shizhuyuan area of Hunan province, China. Its features of petrography, mineralogy and geochemistry were studied systematically. The results show that the skarn mainly consists of garnet skarn, secondary wollastonite-garnet skarn, tremolite-clinozoisite skarn, and few wolframine garnet skarn, idocrase-garnet skarn and wollastonite skarn with granoblastic texture, granular sheet crystalloblastic texture, and massive structure, disseminated structure, mesh-vein structure, comb structure, and banded structure. And, it is mainly composed of garnet, fluorite, chlorite, hornblende, epidote, tremolite, plagioclase, biotite, muscovite, plagioclase, quartz, idocrase, and calcite and so on. The chemical components mainly include SiO2, Al2O3, Fe2O3, MgO and CaO, and the trace elements and REEs consist of Li, Be, V, Co, Zn, Ga, Rb, Sr, Y, Ce, Nd, Pb and Bi, etc. And, the obvious fractionation exists between LREE and HREE, and it shows typical features of Nanling ore-forming granite for W？Sn polymetallic deposit. Skarn is derived from the sedimentary rock, such as limestone, mudstone, argillaceous rock, and few pelitic strips. It is affected by both Shetianqiao formation strata and Qianlishan granite during the diagenesis, indicating a strong reduction environment. The occurrence of skarn, whose mutation site is favorable to the mineralization enrichment, is closely related to the mineralization and prospecting.

Study on Climate Changes for Flue-Cured Tobacco Growth in Chenzhou City of Hunan Province

Chenzhou city is the most typical region of Nanling Hill Ecological Zone of flue-cured tobacco with of aroma style of burnt sweet and pure sweet in China and is the largest planting region of flue-cured tobacco in Hunan province. It is of significance to study the changes of climatic parameters with time because climate is the most important factor in determining the growth, yield and quality of flue-cured tobacco. In this study, the data of climatic parameters including cumulative sunshine hours(S), mean temperature (T) and cumulative precipitation (P)from 1952 to 2018 in Chenzhou were used to analyze their changes at the scales of year, whole field period and growing period of flue-cured tobacco. The results showed that at the scale of year, the cumulative S, mean T and cumulative P were ranged from 1029.0 h to 2072.1 h, from 17.1°C to 19.5°Cand from 897.1 mm to 2244.6 mm, with the means of 1449.7 h, 18.1°C and 1482.5 mm, respectively. At the scale of whole field period of flue-cured tobacco, the cumulative S, mean T and cumulative P were ranged from 298.1 h to 807.2 h, from 21.2°C to 23.9°C and from 416.7 mm to 1102.7 mm, with the means of 514.8 h, 22.3°C and 719.0 mm, respectively. At the scale of growing period of flue-cured tobacco, the annual cumulative S were ranged from 70.0 h to 257.2 h, from 77.3 h to 322.5 h and from 131.2 h to 300.3 h in the periods of rooting, flourishing and maturing with the means of 127.8 h, 190.4 h and 197.2 h, respectively. The mean temperatures were ranged from 14.2°C to 18.9°C, from 22.2°C to 26.1°C, and from 25.8°C to 29.6°C with the means of 16.4°C, 24.1°C and 28.0°C, respectively. The annual cumulative P were ranged from 69.9 mm to 553.9 mm, from 133.1 mm to 485.6 mm and from 46.4 mm to 356.8 mm in the periods of rooting, flourishing and maturing with the means of 262.5 mm, 299.9 mm and 153.9 mm, respectively. At the year scale, cumulative S annually decreased by 7.587 h, mean T annually increased by 0.02°C, while cumulative P changed irregularly with insignificantly increasing about by 0.184 mm annually. At the scale of whole field period of flue-cured tobacco, mean T annually increased by 0.0195°C, while both cumulative S and P changed irregularly with insignificantly decreasing by 1.64 h and 1.62 mm annually, respectively. At the scale of growing period of flue-cured tobacco, all climatic parameters changed irregularly except cumulative S in significant positive compound function in the maturing period. Meanwhile, the slight decreasing tendency of cumulative sunshine hours and the slight increasing tendency of cumulative precipitation are disadvantageous while the slight increasing tendency of cumulative precipitation in the maturing period is positive for the growth and quality of flue-cured tobacco.

Study on Chemical Characteristics of Rainfall in Tobacco-Growing Regions of Chenzhou, Hunan Province

In order to clarify the chemical properties of rainfall in typical tobacco areas in Chenzhou City, Hunan Province, and analyze its potential for soil and flue-cured tobacco planting, rainfall samples in 2020 were collected by rainfall instruments in Fangyuan Town and Aoquan Town of Guiyang County, and the chemical properties that are closely related to the quality of flue-cured tobacco were determined, such as pH, EC, total nitrogen (TN), nitrate nitrogen (), ammonium nitrogen () and ion concentrations (K+, Na+, Ca2+, Mg2+, , Al3+, , Cl−,). The results show that the pH values of rainfall samples at Fangyuan and Aoquan monitoring sites are in the range of 4.92 - 6.17 and 4.93 - 5.69 respectively, with an average of 5.27 and 5.27 respectively. The acid rain characteristic is very obvious, which is mainly dominated by . The variation of rainfall EC has seasonal characteristics. EC is low from January to September, in the range of 6.09 - 56.72 and 11.83 - 30.93 μS/cm respectively, besides, it is high from October to December, in the range of 102.63 - 174.60 and 25.05 - 86.37 μS/cm respectively. The annual deposition of TN was 22.19 and 20.76 kg/hm2/yr respectively, which were higher than that in the western regions with less human disturbance, but lower than or equal to that in the developed agricultural regions in eastern China. The proportion of in the annual deposition of TN was higher than that of at two monitoring sites, with an average of 56.51% and 38.86% respectively. Ammonia volatilization from agricultural activities contributed more to rainfall nitrogen content. The ratios of ammonium nitrogen to nitrate nitrogen deposition at two monitoring points were 1.84, 1.81, 1.86 and 1.34, 1.46, and 1.29 during the whole year, summer and autumn, winter and spring respectively. The ratio is higher in summer and autumn than in winter and spring. The weighted average equivalent concentrations of the main ions at two monitoring sites were 238.88 μeq/L and 211.21 μeq/L respectively, and the orders of the ion concentrations were slightly different. Both the concentrations of and are higher, while Mg2+, and Al3+ are lower. , and are mainly from human activities with a contribution rate between 91.90% and 99.35%. Ca2+ mainly comes from soil and ground dust, besides, Cl− and Mg2+ mainly come from marine sources and K+ mainly comes from terrestrial sources. In general, the acidic rainfall and higher concentration are beneficial to reducing the high pH value of soil in Aoquan tobacco area and improving the quality of flue-cured tobacco. Higher concentrations of and in rainfall are not conducive to the improvement of flue-cured tobacco quality, because of the high content of soil available sulfur in Chenzhou tobacco area and the characteristics of flue-cured tobacco’s preference for ammonium.

郴州市县域经济发展的现状与对策研究

郴州县域经济的发展存在着诸多不足。要加快郴州县域经济发展,必须解放思想,更新观念,确立县域经济新的发展理念;突出特色,开放带动,加快县域经济工业化进程;做大县城,带动乡镇,推进县域城镇化进程;加快体制创新,强化政策扶持,大力发展县域民营经济;发展生态经济,保护生态环境,促进县域经济的可持续发展。

Trace Element Geochemistry of Devonian Strata in the Shizhuyuan Ore District, Hunan Province

1 Introduction Both the Qiziqiao Formation and Shetianqiao Formation,which controls the occurrence and distribution of a great deal of metal mineral resources,are extensively developed in southern Hunan province(Liu et al.,1998),showing quite important indicative significance to deep concealed metal mineral resources(Yu et al.,2003).The geochemistry characteristics of Devonian strata could not affect the spatial occurrence shape of orebody

论郴州市生态旅游的科学发展

生态旅游是当今世界旅游业发展的热点,也是打造郴州旅游新形象的战略选择。坚持以人为本的理念, 以全面发展、协调发展、可持续发展为根本目标,是生态旅游发展的科学内涵。郴州市生态旅游发展应以科学发展观为指导,实施政府主导战略,科学规划、合理开发,增强环保意识和加强人才队伍建设,促进郴州市经济社会全面协调可持续发展。

Vulnerability Assessment of Snow Disaster Based on Traffic System:A Case Study of Chenzhou City in Hunan Province,China

The article establishes the patterns of urban snow disaster system and disaster chain based on the theory of regional disaster system. The patterns indicate that urban snow disaster is exacerbated mainly through the traffic system. In addition, the paper sets up the vulnerability assessment index system and synthetically vulnerability assessment model of urban snow disaster which are mainly based on traffic system, and applies them in Chenzhou City. The results of assessment indicate that obvious geographical differences exist in the vulnerability of snow disaster bearing bodies: vulnerability of Chenzhou section of the Beijing-Zhuhai expressway is the highest in Chenzhou City, and the southeastern counties are more vulnerable than the northwest region. Furthermore, according to the snow disaster vulnerability dynamic process analysis, the vulnerability of Chenzhou City obviously increased in 2008 winter compared with that in 2007. Finally, the paper presents some suggestions for the locations of the emergency commands and the reserves of relief materials based on the evaluation results, and points out that disaster monitoring and relevant technical level should be strengthened for the minimization of traffic system's vulnerability.

SWOT Analysis and Development Strategy of Tobacco Production in Chenzhou City

The research analyzed advantages, disadvantages, opportunities and threats of tobacco production in Chenzhou and proposed a middIe and Iong-term objective for tobacco production, as weI as protection measures, providing refer-ences for transformation, innovation and spanning deveIopment.

Norovirus Infection and Histo-blood Group Antigens in Children Hospitalized with Diarrhea in Lulong and Chenzhou in China

Norovirus （NOV） is a pathogen that commonly causes viral diarrhea in children. Studies indicate that NoV recognizes human histo-blood group antigens （HBGAs） as cell attachment factors. In order to explore the correlation between of NoV infection and HBGAs, a cross-sectional study was conducted in children less than five years old who were hospitalized with diarrhea in two areas of China between November 2014 and February 2015. Of the paired stool and saliva samples taken from 424 children,

污染农田中植物的砷含量及其健康风险评估——以湖南郴州邓家塘为例

本研究系统调查了湖南郴州邓家塘砷污染区水稻田抛荒后自然恢复的植被和旱地 (蔬菜) 两大农业土地利用类型的植物中砷含量, 分析了当地居民砷暴露途径, 并进行污染区健康风险评估。结果表明: 砷污染程度对抛荒农田自然恢复植被类型有显著影响。在轻度污染条件下, 植物物种数量中等但总生物量最大; 在中度污染条件下, 植物物种数量最多; 在严重污染条件下, 植物物种数量最少且总生物量最小。恶性杂草雀稗是自然恢复植被物种丰富度的直接控制因子。当地蔬菜可食部位砷浓度超标现象严重, 呈现出叶菜类 >葱蒜类 >根茎类>果菜类的趋势。人体通过食用蔬菜摄入的砷量在春夏和秋冬季节分别为每日 4 1μg/kg体重和每日 2 9μg/kg体重, 都超过了WHO限定的安全标准 (每日 2 1μg/kg体重)。

关于韩愈待命郴州的几个问题

德宗贞元末 ,韩愈贬阳山 ,旋因政局变化而待命郴州 ,考证而得韩愈于贞元二十一年的七八月之交至九月二十日之间待命郴州。考察韩愈《八月十五夜赠张功曹》中“州家申名使家抑”诗句 ,韩愈待命郴州长达 80余日的逗留 ,应是受到了湖南观察使杨凭的压制与阻扰。这主要是因为韩愈是永贞党的反对派 ,政治上的分歧使韩愈、柳宗元关系蒙上了阴影 ,而杨凭亦是柳宗元之岳父。韩柳关系上的变化 。

郴州农家乐休闲旅游业发展的现状及对策研究

郴州农家乐休闲旅游业有较好的发展,但仍存在一些问题,突出特色、加强指导和支持、改善卫生、提高服务水平、丰富内容、规范管理,是解决问题的一些好办法。

郴州市秋冬季PM_(2.5)污染传输路径与潜在源贡献分析

通过应用HYSPLIT、MeteoInfo模型,计算2017—2021年秋冬季抵达郴州地区72 h的后向气流轨迹并进行轨迹聚类、潜在源贡献因子(PSCF)和浓度权重轨迹(CWT)分析,探讨郴州市PM_(2.5)传输特征及污染潜在源分布。结果表明,郴州市秋冬季PM_(2.5)潜在源区主要分布在北偏东方向,以近距离输送为主,频率最高的是从咸宁市通城县经岳阳市平江县、株洲地区的短距离轨迹,其频率为34.17%;WPSCF高值带起源于河南省,经湖北、平江、江西等地区,最终到达郴州。WCWT分析结果得出,PM_(2.5)污染趋势与上述一致,影响范围更宽,影响程度相对较轻。2017—2021年间,郴州地区污染传输通道影响逐年减小,PM_(2.5)浓度平均下降19.7%。

也谈溆浦蛮夷的历史文化和族属

以史志文献对溆浦蛮夷的记载和该县发掘的考古材料、宗教祭祀与丧葬等习俗文化 ,以及对苗族田、吴、向、张、杨等姓的苗语称谓 ,论证了溆浦县地的蛮夷为崇拜盘瓠的五溪蛮的一部分 ,即《风俗通义》所载的那个蛮夷 。

湘南柿竹园矿田云英岩型钨多金属成矿规律及成矿预测

湘南柿竹园矽卡岩型-云英岩型钨多金属矿田是中国最重要的钨多金属矿产资源基地之一。前人对该矿田的矽卡岩型成矿开展了系统的研究,而对矿田内云英岩型钨矿化研究薄弱,制约了矿田内成矿理论的认识和矿产勘查部署。通过野外调查,文章系统总结了矿田内云英岩型矿化样式、空间分布、矿化特征和控矿因素。研究显示柿竹园矿田内云英岩型矿体包含4种矿化样式:第一期斑状黑云母花岗岩中云英岩型矿体、石英斑岩中云英岩型矿体、第二期黑云母花岗岩中云英岩型矿体和矽卡岩-网脉状云英岩复合型矿体。这4种样式的云英岩型钨多金属矿体是柿竹园矿田内不同阶段的花岗岩成矿的产物。白钨矿化学成分显示矽卡岩型矿化的白钨矿低Mo,而云英岩型矿化白钨矿富Mo,指示云英岩矿化较矽卡岩矿化具有更氧化的环境。柿竹园矿田矿化格局显示云英岩型矿化受矿田和矿床尺度的花岗岩体侵位前锋控制,矿田尺度表现为岩体由北东深部向南西浅部侵位,千里山岩体南部为岩体侵位的前锋,岩体南部发育较大规模的云英岩矿体;矿床尺度上,云英岩体的定位受控于花岗岩岩突的控制。此外,矿田菱形格状构造对岩突产出位置具有重要的控制作用,也具有重要勘查指示意义。结合矿田控矿构造格局、不同期次岩浆岩对云英岩的控制及地球化学异常特征,笔者提出了大吉岭、柿竹园深部和柴山深部3处云英岩型钨多金属矿找矿预测靶区。

湖南柿竹园钨锡多金属矿床同位素地球化学研究

柿竹园钨锡多金属矿床中细粒和中粒黑云母花岗岩Rb -Sr等时线年龄分别为 (133± 2 3)Ma和 (14 3± 7.3)Ma ;初始锶同位素比值分别为 0 .71774± 0 .0 14 72和 0 .732 97± 0 .0 345 4。从花岗岩侵入到成矿作用晚期阶段 ,δ18OH2 O和δDH2 O分别从 +5 .6‰～ +11.4‰和 - 5 6 .0‰～ - 6 2 .3‰变化到 - 5 .8‰～ - 8.5‰和 - 4 8.0‰～ - 6 9.7‰。花岗岩中石英的δ18O值较高 ,为 8.4‰～12 .1‰ ,岩浆水的δ18O为 5 .6‰～ 11.4‰ ,δD为 - 5 6 0‰～ - 6 2 3‰ ,但钾长石、黑云母的δ18O值较低 ,计算出的氧同位素平衡温度低于花岗岩结晶温度 ,表明花岗岩形成后受到岩浆水和雨水的交换作用和蚀变作用。本矿床流体的氢氧同位素 ,具有独特的演化规律 ,用沸腾去气作用和雨水混合作用可以解释其流体氢氧同位素的组成特征。

郴州市成年人体质状况的调查研究

对郴州市城区户口的常住居民进行了体质调查 ,并对监测数据进行统计分析 ,掌握和了解成人体质的变化及特点。针对监测中发现的问题 ,应及时采取措施 ,探索新颖、有效、科学的健身活动方式 ,用丰富的、多种多样的活动方式 ,吸引更多的人们参加体育锻炼 ,以提高全民健康水平。

郴州市市辖区建成区扩张时空变化特征及驱动力分析

以湖南省重要城市郴州市的市辖区为研究对象,选取1989年、2000年、2009年、2018年4期Landsat遥感影像,通过最大似然法提取了土地利用类型信息,运用转移矩阵分析了各年份间土地利用变化趋势,基于阈值分割图像确定了市辖区建成区范围,分析了建成区变化趋势及其与人口、经济的关系.结果表明,1989-2018年间建设用地增长147.39 km^(2),建成区面积增长32.32 km^(2),主要来自林地和耕地转化,且耕地转化占比不断增大.受“南延东进、西扩北提,东进优先”政策影响,建成区各年份间扩张强度依次为4.86%、6.45%、5.74%,主要向南、东南方向持续快速扩张.受地貌限制,建成区总体呈近南北向线性形态,属不规则圈层式+廊道式结合的扩张模式,人口、经济增长皮尔逊相关系数为0.9756、0.9751.政策、自然地貌、人口、经济构成了该城市扩张的重要驱动因素.研究可为郴州市城市高质量发展精准施策提供参考.