Fate of paralytic shellfish poisoning toxins in purple clam Hiatula rostrata,in outdoor culture and laboratory culture

Purple clams (Hiatula rostrata Lighttoot) accumulate paralytic shellfish poisoning (PSP) toxins produced by a toxic strain of the dinoflagellate Alexandriun minutum Halim. The results confirm the data of our previous study concerning the muscle and siphon that were not showing a gradual rise in toxicity when shellfish accumulated more A. minutum. However, muscle and siphon are intermittently toxic both in exposure and depuration period in laboratory cultured purple clams. PSP toxins were detected in outdoor cultured purple clams, whereas no A. minutum were found in the culture pond during most of the survey time. The outdoor cultured purple clams need longer time to decrease toxicity to allowable levels than laboratory cultured purple clams. It was shown that laboratory data may not predict times over which pond-cultured purple clams may prove toxic to consumers.     

中国古代风水思想和昆明旅游圈寺庙规划布局

历史上,昆明旅游圈若干寺庙的规划、布局与中国古代风水思想息息相关.古人在规划布局寺庙时,往往综合考虑寺庙的宗教、旅游和文化生态三方面功能,值得今天我们在恢复古寺庙时借鉴.     

Ethnicity in Eastern Europe: Historical legacies and prospects for cohesion

Eastern Europe lacks cohesion partly arising from a history of ethnic tension. Ways are now being found to overcome historic conflicts over alternative political structures, as the enlargement of membership for European institutions requires greater equality of rights at the same time as support and security is extended. Thus while ethnicity, as a political, social and cultural entity, persists in Eastern Europe as an essential element at the local level, it is now being seen more positively as cultural diversity and thus more compatible with democracy and a positive asset to national well-being. Multi-ethnic states are proving to be viable and some of the most intractable inter-ethnic problems (linked with the Hungarian minorities) are being addressed constructively. Yet there are signs that the southern part of the region is being marginalised regarding foreign investment. Also there is unease that European values are not being embraced unconditionally in parts of the Balkans. Recent military intervention has created fresh problems, committing the West to continued economic and political support to strengthen its stance on democracy and minority rights. This revised version was published online in July 2006 with corrections to the Cover Date.     

贵州旅游地学资源初探

根据贵州特点,将贵州旅游源分为９大类：地学景观类,地学遗迹类,水文景观类,运动、疗养、休闲、度假类,天象景观类,生物景观类,人文景观类,民族风性类和土特产品类。为合理开发和保护贵州旅游资源,作者提出了一些建议。     

旅游网站访问者行为的时间分布及导引分析

运用多种网上查询系统和网站访问量统计工具, 获取了旅游网站访问者时间分布的较 详细资料, 基此总结了旅游网站访问者日内、周内、年内行为的时间分布特征, 进而讨论了旅游网站访问者人数与景区旅游者人数之间的相关性及其信息流对人流的导引作用。研究发 现: 旅游网站访问者日内行为的基本规律是自身表现为一种双峰状态且国内北方显著于南方, 其在使用时段上与整体互联网及其主要网站类型的“尖峰时段”特征有较大差异, 日内旅游网站访问者人数与景区旅游者人数时间分布的基本一致性说明信息流对人流不具导引作用; 旅游网站访问者周内行为的基本规律是自身呈现出周末较少平日较多的特征, 与整体互联网及与互联网其他类型的网站比较既有相同性也有差异性, 旅游网站平日访问量较高周末访问量较低的特征与周内旅游人数平日较少周末较多的“Z”型分布呈互补状; 旅游网站访问者年内行为的基本规律是依据旅游网站的地域性明显与否而形成国内南北方的多种类型, 其访问者的时间行为与旅游者人数波动的紧密关系是由自然季节因素的, 旅游地旅游网站年内访问者人数走势与该旅游地旅游者人数走势表现出的波涟状特征可解释为信息流对人流发生导引作用。     

虹口自然生态旅游区开发中的环境地质问题

通过对虹口自然区旅游资源特征的论述 ,阐明了开展生态旅游的可行性。分析了在本区特殊地质条件下开展旅游的潜在主要环境地质问题 ,并针对性地提出了相应的生态环境保护对策。     

旅游规划理论的结构

该文阐述旅游规划理论体系的结构,旨在解决众多理论之间的“接口”问题。     

旅游资源空间信息系统总体设计框架构想

文章分析了旅游资源及旅游资源空间信息的主要内容,根据旅游资源的特点,确立了旅游资源空间信息系统设计的指导思想与原则,应用ＧＩＳ技术手段和方法,讨论了风景区旅游源源空间信息系统的总体设计,并提出了该总体设计的具体设计方法和步骤。     

河南省旅游经济发展的前景分析

文章分析河南省旅游经济发展目前存在问题：即效能运输发展滞后、高速公路发展缓慢、配套旅游设施不完善、旅游产品的文化品位低、市场定位不准、管理体制不畅等问题,这无疑制约了河南旅游经济的持续健康发展。同时,提出了河南要在国内外旅游市场上提高知名度,就必须要关注观光农业、探险旅游、城市水体开发、生态旅游、虚拟现实技术等一些新的旅游经济增长点,走旅游经济可持续发展的道路。     

昆明市自然旅游资源优化开发探讨

在云南省旅游业蓬勃发展,各地区纷纷将旅游业作为支柱产业重点发展的今天,昆明市作为旅游目的地的功能在减弱,而作为旅游集散地的作用在加强。如何使昆明自然旅游资源得以充分开发,提高其旅游吸引力,是昆明亟德解决的问题,文章从优化开发的角度进行了探讨。