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.

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,

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.

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%。

“双碳”目标下郴州市东江湖水资源-经济-社会-环境-科技耦合协调发展研究

构建郴州市东江湖水资源-经济-社会-环境-科技5个子系统、16个评价维度、78个评价指标的评价体系,运用熵值法和耦合协调度模型测算其耦合协调度,破解“水资源利用效率低、重金属污染等问题”。研究结果表明:郴州市东江湖水资源评价指数呈缓慢下降趋势、经济呈较快增加趋势,水资源与经济两个子系统处于较高水平发展;社会、环境、科技3个子系统同样呈现出较好发展趋势,但仍处于较低水平;5个子系统自2018年步入高水平耦合度发展阶段和中等耦合协调度发展阶段,其中2019—2021年为良好耦合协调类型。

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.

农村电商发展对农户收入的影响研究

基于湖南省郴州市2969份农户的调研问卷,借助OLS模型和PSM模型实证分析农村电商发展对农户收入的影响。研究表明,农村电商发展显著提升农户的非农业经营性收入,经过转换模型后结论依旧成立。此外,研究还发现农村电商通过强化信息获取、降低交易成本以及增强金融支持能促进农户收入增长。因此,推动农村电商健康发展,对农户增收、实现共同富裕具有重要意义。

2021—2023年郴州市地表水水质状况分析

为了解郴州市地表水的水质状况,分析郴州市在2021—2023年的水质监测数据,全面评估郴州市的水质变化趋势、空间分布特征及潜在的环境健康风险。结果显示,2021—2023年,郴州市地表水质量显著改善,优良水质(Ⅰ~Ⅲ类)比例逐年上升至100%,且在2022年消除了Ⅳ类及以下水质断面,其中Ⅰ、Ⅱ类水质占比显著提升。通过对比分析各县(市、区)的水质指数,发现地表水水质整体向好,但局部区域,如临武县和北湖区,仍面临水质波动较大的问题。相关研究结论揭示了郴州市水质改善措施的有效性与地域差异性,为制定水资源保护策略提供了科学依据。

汕尾市晨洲生蚝品质分析与检测模型的建立与优化

晨洲生蚝是广东省汕尾市重要的水产品品牌,其品质直接关系到市场竞争力和消费者健康。建立科学、高效的品质检测模型对于提升生蚝养殖水平和保障食品安全具有重要意义。本研究通过整合多种检测技术,构建了一套综合评价体系,包括感官指标、理化指标和微生物指标,并利用机器学习算法(神经网络、支持向量机和随机森林)优化了检测模型。实验结果表明,优化后的模型在准确性、稳定性和效率方面均有显著提升,总体准确率达到94.2%,每样本推理时间为0.08 s;在实际样品检测中,模型准确率和分级效率均优于人工,为晨洲生蚝的品质管理提供了有力的技术支持。

土地储备全生命周期信息化管理系统设计与实践--以郴州市为例

土地储备作为城市发展的重要支撑,其管理效率和效果直接关系到城市发展的质量和可持续性。然而,当前土地储备管理中仍然存在运行机制执行不充分,管护和前期开发工作落实不到位,土地盘活利用不够,部分业务环节仍采取纸质流转、纸质台账式管理等问题,无法实现土地储备项目全生命周期管理。本文以郴州市为例,深入研究了利用数字化技术构建土地储备全生命周期信息化管理系统的设计与实践路径,通过综合运用地理信息系统(GIS)、大数据、物联网、智能监控、移动互联网等新一代信息技术,在土地储备信息的空间可视化、业务全流程管理、管护巡查和土地资产推介等方面进行创新运用,构建了集收储规划、土地收储、前期开发、管护与供应、成果归档等于一体的土地储备全生命周期信息化管理系统。郴州市实践表明,土地储备管理信息化取得了提高工作效率、增强决策科学性、促进政务公开透明等具体成效,为其他地区土地储备管理的信息化转型提供了可借鉴的经验和路径。

基于生态资源与网络大数据叠加的郴州市森林康养资源评价研究

本文提出了一种基于生态资源数据与网络大数据叠加分析的森林康养资源评价方法,弥补目前国内外对森林康养资源评价方法尚无定式的现状,为定性与定量评价森林康养资源质量和潜力提供理论参考。以郴州市森林资源二调数据库、交通现状等生态资源数据、网络大数据和国家及湖南已颁发的技术标准与规范为依据,本文通过构建森林康养资源评价指标体系,采用德尔菲法确定各因子权重,进行因子叠加分析,得到郴州市森林康养资源评价图。结果表明:(1)郴州市森林康养资源普遍较好,从东部、中部至西部呈现由高至低分布特点;(2)东部地区的资兴市东江湖周边、桂东县、汝城县的森林康养资源最好,中部郴州市中心城区周边、郴州狮子口省级自然保护区及南部宜章莾山的森林康养资源优良,西部地区的嘉禾国家森林公园、临武东山林场、西瑶绿谷国家森林公园周边的森林康养资源良好;(3)全市最好的优质森林康养资源主要集中分布在东、中部的国家风景名胜区、国家自然保护区和国家森林公园等自然保护地及汝城益将、资兴滁口等国有林场。本文的研究结论在于,通过建立以森林生态资源、交通区位及网络大数据为依据的评价指标体系,对郴州市域森林康养资源进行叠加综合分析评价,研究方法实用、高效、可操作性强,结果科学、客观。研究结果可为制定郴州森林康养产业发展政策和编制发展规划提供技术支持,对优化康养资源配置和项目布局具有一定意义。

文化传承视域下红色文献阅读推广研究——以湖南省郴州市为例

郴州市是中国革命的红色热土之一,拥有浓厚的红色文化底蕴,为更好地促进郴州市红色文献阅读推广,充分发挥郴州市红色文化资源的优势,助力红色文化传播与传承,该文研究了文化传承视域下红色文献的阅读推广工作路径。结合郴州市红色文献资源情况,分析了郴州市图书馆和各县市区开展红色文献阅读推广情况。通过剖析郴州市红色文献阅读推广存在的问题,指出郴州市图书馆应从改造升级红色阅读空间、让读者参与图书采选、以点带面逐步形成示范效应、拓展红色文献资源互动式推广等方面开展阅读推广,郴州市各县市区应从跨圈层合作开展阅读推广、开展虚拟与现实交互式阅读推广、利用公共场域开展阅读推广等方式拓展郴州市红色文献阅读推广路径。

不同玉竹品种主要农艺性状及叶绿素含量比较

以郴州地区3个不同玉竹品种(高禾尾参、猪屎尾参1和猪屎尾参2)为研究对象,比较不同玉竹品种农艺性状(株高、地径、叶长和叶宽)和叶绿素含量(叶绿素a、叶绿素b和叶绿素总含量)的差异,评价不同品种玉竹的种苗质量。结果表明,高禾尾参、猪屎尾参1和猪屎尾参2各物候期农艺性状及叶绿素含量有一定差异,其中高禾尾参生长性状表现较好,其株高、地径、叶长等生长指标高于其他两个玉竹品种,叶绿素含量较高,种质优势明显;猪屎尾参2植株发育相对迟缓,株高、地径、叶长、叶绿素含量等均低于其他两个玉竹品种。

古代诗词地理意象的时空层积与规划设计应用——以郴州地区为例

随着学科交叉的不断深入,借助诗词这一文学媒介进行古代地域空间意象的研究日益增多。回顾城市意象与文学地理意象的相关研究,在诗词意象信息提炼和分类的基础上,建立诗词地理意象的时空特征分析框架。通过意象词频和历时性的计算,分析郴州地区诗词地理意象的时空层积度,进一步比较其时空特征差异和意象偏好。

Application of Spodoptera litura Nucleopolyhedrovirus for Crop Pest Control

The laboratory bioassay and field control efficacy of Spodoptera litura nucleopolyhedrovirus（Spli NPV） Chenzhou strain were preliminarily examined. The efficient artificial propagation method was to feed the host larvae with virus suspension,and the average mortality of the insects was 65.0%. The death peak of the pests appeared 4-8 d after virus infection. The high temperature, high humidity and poor light could help the virus infection and propagation. Filed control efficacy of Chenzhou strain was 86.6% in laboratory, which was better than of another commercial strain. The corrected control efficacy of this strain was 88.4% the field, which was higher than that of avermectin pesticide significantly. It was detected that the occlusion body（OB） concentration of the initial virus＇ s stock solution was 1.03×1011OBs/ml,and it was a strong SpliNPV strain, as it showed an excellent efficacy to control the pest Spodoptera litura, and thus there will be a good prospect of application and development of this SpliNPV strain.

污染水稻田中土壤含砷量的空间变异特征

利用地统计学方法研究在长期淹水和频繁干湿交替影响下污染水稻田中砷的小尺度空间分布特征。采用变异函数定量描述含砷量分布特征 ,用克立格插值法对表层土壤未测点的含砷量进行最优估计 ,并绘制含砷量等值线分布图。结果表明 ,来自表面污染源的砷进入农田土壤后主要积累在耕层 0～ 2 0cm中 ,对 4 0～ 80cm土壤影响不大。耕层土壤含砷量半方差值呈有规律持续增加趋势 ,可用直线方程很好地拟合。表层土壤含砷量存在很好的空间结构性 ,高砷区出现在进水口附近 ,并以其为中心呈斑块状向周围扩散 。

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)。