摘要世界上绝大多数的文明发展和历史文化名城的出现都与湿地密切相关。人们傍水而居，逐渐形成了不同格局，不同规模的城市湿地。人们享受着大自然的恩赐，却也在一味追求城市发展的同时，忽略了对城市湿地的保护，导致大量的城市湿地被城市化进程蚕食，湿地遭到了严重的破坏。因此，对城市湿地的保护刻不容缓。71962

    湿地作为一种动态变化较快的自然资源，而遥感技术则是为地表的动态变化研究提供了大范围，高时效，多光谱的实时信息，而且具有经济性强，节省人力物力的特点、遥感技术对湿地资源的动态检测有着重要意义。

本文以西溪湿地为例，选取一个代表性场景，从该场景的不同年份的遥感影像入手，将学科理论依据与案例研究结合起来，对西溪湿地景观三维场景进行理论与方法的研究，对场景进行计算机绘制，从而分析其变化趋势，最后能够针对变化趋势提出合理的意见。

研究结果表明，西溪湿地以湿地景观和农业景观为主，破碎程度较高，人为干扰严重。在近二十年的发展历程中，城市建设用地不断扩大，水体、林地面积持续减小，各类景观要素的破碎程度也在加大，生态系统日益脆弱。

毕业论文关键词: 西溪湿地；三维场景；计算机绘制软件；趋势分析；解决方案

Abstract   Most of the world's civilization development and the emergence of the historical and cultural cities are closely related to the wetland。 People alongside water, gradually formed a different pattern, different scale of urban wetland。 People are enjoying the favor of nature, but also in the pursuit of urban development at the same time, ignore the protection of urban wetland, resulting in a large number of urban wetland was urbanization nibbled, wetlands are being destroyed。 Therefore, the protection of urban wetland is of great urgency。

   Wetland as a kind of dynamic changes fast in natural resources, and the remote sensing technology is for the study of the dynamic change of the surface provides a wide range, high aging, multispectral real-time information, and with the strong economy, save manpower material resources, remote sensing technology to the characteristics of the wetland resources has important significance to conduct the dynamic test。

Taking XIXI Wetland as an example, select a representative scene, from the remote sensing image of the scene in different years, combine subject theory and case study, the XIXI Wetland landscape theory and method of research, a three-dimensional scene to computer rendering of scenes, so as to analyze its change trend, finally to put forward reasonable suggestions on change trend。

The results show that the XIXI Wetland is given priority to with wetland landscape and agricultural landscape,broken degree is higher,human disturbance is serious。In nearly 20 years of development,the urban construction land expands unceasingly,water,forest land area is continuously decreasing,crushing degree of all kinds of landscape elements are high,with increasingly fragile ecosystem。

Keyword: XIXI Wetland; 3D scene; Spatial visualization; Computer drawing    software; Trend analysis

目    录

1。 引言 6

1。1绪论 6

1。1。1 研究背景 6

1。1。2 研究意义 6

1。2研究内容 7

1。3国内外研究现状 8

1。3。1国内研究现状 8

1。3。2国外研究现状