本文通过对网上调查统计和旅游网站特征指数（TWCI）的设计及其分析，描述了中国旅游网站的空间分布类型并分析了其影响因子。结果表明国内旅游网站的空间分布存在差异，而区域旅游网站发展规模数量与区域社会经济基础、网络技术基础背景以及区域旅游发展的区域分异具有较大的一致性。文章利用TWCI进行了分区并提出了中国旅游网站的若干发展策略。

This is a case study with data from Jiuzhaigou and other national parks in China. It has been revealed that the travel distance of tourists to a destination is related to their age, occupation, education level, existent income, self-perceived income level, landscape preference and tourist attitude, yet not to the tourist motivation. Perceived distance has got the character of distance decay, and substitute distance is supposed to related to travel distance. Pareto Model is proved to be the best-fit model of Taylor's five types of distance decay model. Also in this paper, the distance characteristics and the uneven spatial structure of convergent travel behavior of tourists and the related market background were studied by using different distance cumulative curves.

通过对我国及国入典型喀斯特区域的样品观察，本文对内陆及海岸灰岩表面藻类的分布、对基岩的作用类型和机制以及在喀斯特地貌侵蚀形态发育过程中的作用进行了初步的分析和探讨，所有结果表明，藻类作用十分普通并在尺度上具有层次性，在微观尺度上形成了独特形态，藻类的侵蚀机制有化学和机械之分，最基本的过程为钻孔作用。

本文系统回顾了国内外有关旅游地理结构及旅游持续发展的研究成果，分析了旅游地的旅游地理结构研究的概念、内容体系、薄弱方面及可能研究途径，咬牙着得分析了旅游地理结构研究与旅游地持续发展的关系，指出旅游地理结构研究是旅游地持续发展研究及措施制订的必要前提，基本方法和效途径。针对九寨沟实例文中简析了这种研究的实践意义。

Jiuzhaigou Conservation is a typical karst region with scenic tufa constructive landscape. With observation in situ and optical microscope as well as scanning electronic microscope, a series minor and micro biokarst solution features and related agents were identified and described related to local environmental condition, and also the bioeffect on karst deposition in formation of the local tufa dammed lakes were elucidated and discussed. It is shown in the cycle model proposed in the paper that many organisms (algae, mosses, and bushes etc.) with various effects (assimilation, interception, encrustation, trapping and binding etc.) on tufa deposition play an important role throughout the compound cycle process of the tufa dam gradation, i.e. the formation of the tufa dammed lakes in the stream channels which are character of local karst landscape.