鄂尔多斯盆地南缘早古生代碳酸盐岩高频沉积旋回分析

鄂尔多斯盆地南缘早古生代碳酸盐岩台地的演化可分低能和高级缓坡、具局限性内陆架盆地的镶边陆架、虎蒸发性内陆架盆地的镶边陆架及断边缘４个阶段，在不同的演化 ，高频沉回旋类型具有明显差异，说明沉积背景控制了碳酸盐岩高频沉积旋回的复杂性、多样性、根据对和线个演经阶段高频旋回的分级栩比及周期计算表明，其驱动机制应与米兰科维奇的天文轨道有关。     

湖南凤凰台地峡谷型岩溶地貌初探

台地峡谷型岩溶地貌是湖南风凰国家地质公园内特有的岩溶地貌。本文初步研究了台地峡谷型岩溶地貌的发育特征和形成因素，并对其进行了景观价值评估。基于该地貌的特殊性，在凤凰县境内建立一个以台地峡谷型岩溶地貌为主的国家地质公园，具有重要意义。     

基于网络文本内容分析的凤凰古城旅游地意象感知研究

网络情境下旅游地意象感知研究是目前国内外研究的热点,国内研究需对内容分析方法体系进行完善,案例地也需要丰富。该文以中西部贫困山区古镇型旅游地凤凰古城为案例地,综合利用内容分析方法中词频分析、语义网络分析和情感分析等技术,分析了凤凰古城游客旅游地意象感知特征和意象结构。结果发现,游客对凤凰古城旅游地感知的整体意象是人文景观类旅游地,认知形象成分包括古城、民族文化、休闲娱乐、美食购物4个主题;情感形象成分以积极情感为主,中性和消极成分比例小;意象高频词呈长尾分布特征,而游客文本语义网络呈现"核心-次核心-外围"三圈结构。最后提出旅游地意象管理的相关策略。     

Middle and Late Cambrian trilobite communities from Fenghuang (Dama) of western Hunan, China

Middle and Late Cambrian trilobite faunas from the Dama section in western Hunanare are composed of 63 genera and subgenera, 84 species, and two forms of gen. et sp. indetermined. Which include a mixture of cosmopolitan agnostoids and polymeroids. Three new species,Hardyoides damaensis,Meringaspis damaensis and Rhyssometopus (Rodtrifinis) nitidus, are described by present author in 2004. Besides, Erixanium is recognised for the first time in study area, which is significant for biostratigraphical correlation of the Late Cambrian in the Austalo-Asia region. According to distribution regularity vertical, the Middle and Late Cambrian trilobites can be divided into 9 trilobite communities for the Dama section. Based on the trilobite communities analysis, the author concludes that from the east Mt. Lailong to Dama through Fenghuang, further east, reach in Chenxi,the palaeoenvironments were changed from a shallow-water of oxygen-rich (platform margin slope ) into a deep-water of oxygen-poor setting (basin).     

文学旅游地的空间重构研究——以凤凰古城为例

文学和旅游之间关系十分密切,以文学旅游地为切入点,运用定性研究方法分析了凤凰古城如何通过文学和旅游的影响实现其空间重构,得到结论如下:1开发者的旅游开发行为迅速改变了凤凰的社会经济结构,在其旅游发展过程中,不同权力主体(政府、开发商、小成本经营者、旅游者等)之间的权力博弈实现了空间的"权力化"重构;2以沈从文及其作品等为代表的湘西文学作品和旅游者的地方想象共同建构了凤凰古城的地方形象,文学和旅游的"邂逅"赋予凤凰诗性的想象空间,实现了凤凰古城诗性空间的构建;3权力空间和诗性空间的建构过程是相互影响的:权力空间的构建过程中包含了权力主体对诗性空间建构过程的运用;反之,诗性空间的建构过程也包含着不同权力主体对空间的利用和争夺,并受之影响。     

Carbonate Platform Margin Slope Characteristics of Cambrian Chefu Age in Baojing-Fenghuang and Adjacent Areas, Western Hunan, China

The Cambrian paleogeography in south China can be divided into Yangtze platform, plat-form margin slope (including upper slope and lower slope) and basin. The carbonate gravity deposits are well developed there, particularly in the Yangtze platform adjacent areas. This paper mainly deals with declivity fan characters of the Chefu age in Fenghuang acUacent areas, western Hunan Province. Accord-ing to their distribution and thickness, three main declivity fans have been divided in the study areas,namely, Dama ( ∈ c-dsf), Machong ( ∈ c-msf) and Huangheymm ( ∈ c-hsf) declivity fans. Each fan‘s characters are described in detail in this paper. Based on their distribution range, scale and fossiliferous layers, two peak periods (fair developmental period) are distinguished: (1) Linguagnostus reconditus Zone (time), and (2) Glyptagnostus reticulatus Zone (time). They were characterized by huge thickl imestone breccia layers (single layer 3--4 in thick) and dosely spaced spread. Besides, there are also two develolmaental periods: (1) Lej op yge laevigata- Proagnostus bulbus Zone (time), and (2) Agnos-ms inexpeetans-Proceratopyge protracta Zone (time) to Erixanium Zone (time) to Corynexochus plumula-Sinoproceratopyge cf. kiangshanensis Zone (time), while Glyptagnostus stolidotus Zone (time) was an interstitial period (without or rare limestone breccias). All these features may verify the relative movement of the earth crust and paleodimate variety of the Chefu age in the study areas.     

走滑活动断裂的障碍体与地震破裂的关系

系统收集了中国大陆走滑活动断裂带上障碍体（阶区）与地震破裂的资料,探讨了障碍体止裂尺度与地震破裂的关系及其分段意义。统计分析表明,走滑活动断裂带上地震的震级与障碍体的阶距、阶距与次级段长度具有较好的线性关系。障碍体的阶距可以作为判定地震破裂止裂尺度的极重要标志,是进行破裂分段的前提和基础。     

凤凰大理石矿床地质特征及开发建议

凤凰大理石矿床属沉积碳酸盐岩类型,特大型矿床。它赋存于奥陶系中统的牯牛潭组和宝塔组地层中,矿体成层状,由三个矿层组成,分别产出“沱江绿”、“凤凰红”和“龟纹石”三种大理石品种,其物理性能良好,抗压强度为68.65—143.21MPa,抗折强度大于13.73MPa,容重2.73—2.78g/cm_3,吸水率0.20—0.42％,抗冻性能合格,加工性能和装饰性能良好,是一种优质的饰面石材。     

乡村振兴-乡村旅游系统耦合机制与协调发展研究——以湖南凤凰县为例

发展乡村旅游是实现乡村振兴这一伟大战略的重要路径选择。通过乡村振兴与乡村旅游体系维度解构及动力机制分析,解析了二者的相互关系及作用机制。以湘西凤凰县作为研究案例地,分别构建了乡村振兴评价指标体系和乡村旅游评价指标体系。根据2001—2017年面板数据,分别计算了其综合评价指数、协调度、协调发展度,依此将凤凰县乡村振兴-乡村旅游系统耦合过程划分为三个阶段,并分析了三个阶段的特征。根据演化速度函数及反映了二者变化趋势的差异的剪刀差,解析了乡村振兴-乡村旅游耦合系统的演化过程。通过案例研究,解释了乡村振兴-乡村旅游系统作用机制与演化规律,旨在为乡村振兴之乡村旅游路径选择提供政策参考。     

凤凰湖养殖环境调查及评估

山东省荣成市凤凰湖海域水质常规项目、营养盐、卫生安全和浮游植物调查及综合评价结果表明,凤凰湖海域水质状况良好,各项指标均达到国家海水水质第二类标准以上,适合开展海水养殖活动。随着自然条件的改变和养殖的开展,今后应制订一个科学的监控调查评估方案,定期进行监测,确保养殖环境和养殖产品的安全。