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1.
海峡两岸城市绿地遥感监测与对比分析 总被引：2，自引：1，他引：1
以福州和台北的ASTER和TM遥感影像为数据源,提取两市中心城区绿地信息并计算景观生态指标。对比分析结果表明:1988～2004年期间,两市中心城区面积增加,绿地面积及其所占比例减少,但福州城镇扩张速度和绿地面积所占比例下降幅度远大于台北;两市绿地斑块形状趋向简化,连通性变小,聚集程度降低;与2004年福州相比,2003年台北中心城区绿地的形状更规则,连通性更强,聚集程度较高。 相似文献
2.
河川是一个复杂的生态系统,河川主支干道即为系统中的主要动脉,各种物质循环、能量流动、物种讯息传输,均依赖河川水系为之.但因人类迁入活动及过度利用水资源,干扰了水的自然循环,土壤与微生物的自然演化,生物的迁徙与演替平衡等.且目前河川治理大多以取水、防洪为优先,忽略了景观生态原则在河川中的作用,致使城市与水环境关系日益疏离,物种的栖息地逐渐被破坏.本研究以台湾北部淡水河流域为例,探讨河川流域中之景观生态功能,并将景观生态原则纳入流域治理的综合目标之一,研拟可持续发展的策略. 相似文献
3.
台北盆地位于台湾造山带的北部,它的形成有其特殊的机制而不同于一般意义上由于造山带的垮塌直接导致的盆地。钻井、地震勘探等资料表明,控制盆地形成的山脚断层并不是一条完整的正断层,而是由 3个段落组成,每个段落控制 1个沉积中心,彼此之间没有沟通。山脚断层各段落的活动性并不相同,向NE方向随时间逐渐增强,目前最为活动的段落集中在中段和北段,南段已不活动。台北盆地并不是一个孤立发育的盆地,是与金山断层东南的大屯火山群同时陷落的,具有一致的地球物理场背景、沉降规模以及正断层活动,广义的台北盆地从沉降范围和机制上还应该包括金山断层以南的大屯火山群。盆地周围发育了一系列的火山 (群),由于盆地的发育是紧随这些火山主要活动之后的,盆地的形成与周围火成活动有着必然联系,一些地球物理资料和盆地内的构造发育及沉积迁移特征表明,台北盆地的发育是深部岩浆体的冷却收缩所致。台北盆地深部存在与大屯火山群深部相通的岩浆体,岩浆体的冷却由南向北迁移 相似文献
4.
Based on the quarter-wavelength approximation, the frequency-dependent site amplifications, A(f ), at 18 free-field strong-motion stations in and near the Taipei Basin are evaluated from well-logging data. The V
30, which is the average of the S-wave velocities in the topmost 30 m, is a significant factor in classifying the sites. Results
show that the site amplifications at all sites in study are larger than 1 and functions of frequency. Compared with the Haskell
method, the quarter-wavelength approximation is almost an average and a good representation of overall amplifications. It
is noted that the site amplifications evaluated in this study can apply only to frequencies greater than about 1.1 Hz for
class C sites and 3.1 Hz for class D. 相似文献
5.
Fan-Chieh Yu Tien-Chien Chen Meei-Ling Lin Chien-Yuan Chen Wen-Hai Yu 《Natural Hazards》2006,37(1-2):153-167
The severe Typhoon Nari ended on September 15, 2001 with a high-intensity and high-accumulation storm that dumped up to 1249 mm
of rain in Taipei City, Taiwan. The high-intensity and high-accumulation event caused flooding and triggered more than 400
soils slips and debris flows and large, complex landslides. Detailed information on 63 events, including rainfall, initiation
time, and magnitude of landslides were documented and analyzed to identify the landslides and rainfall characteristic in Taipei
City during Typhoon Nari. The result reveals that slump, slide, and debris flow events are associated with the situation of
high-intensity or high-accumulation rainfall. The rainfall intensity-duration condition resulted in smaller magnitude and
shallow failures. Medium to massive landslide were mainly related to the high-accumulation rainfall. A landslide regionalization
process based on rainfall, geomorphologic and geologic characteristics is proposed. Results of the proposed process show good
agreement with landslide events observed in the Taipei City during Typhoon Nari. 相似文献
6.
旅游节庆品牌认知是衡量游客认识和理解节庆品牌内涵及价值的标准,城市旅游节庆的主题也体现了城市意象的相关元素。在分析台北市地理区位、社会文化和城市功能等属性后,明确了台北具有"生态、创意、旅游"三大城市意象。以台北101跨年晚会为例,研究旅游节庆品牌认知对游客支持意愿的影响,分析旅游节庆对推广城市意象的作用。研究结果表明:品牌知名度、品牌联想、感知质量、感知价值、品牌信任、品牌忠诚度是影响游客支持意愿的六大驱动因素;节庆品牌认知对支持意愿的影响存在年龄、学历和居住地三方面的群体差异性;基于城市意象特征塑造旅游节庆品牌有利于推广城市意象,并延长节庆品牌的生命周期。 相似文献
7.
D. C.-F. Shih 《Stochastic Environmental Research and Risk Assessment (SERRA)》2002,16(6):449-463
Water levels of the five river stages in the Taipei Basin are analyzed by using spectral analysis in time-frequency domain
through one-year hourly data. The autospectral and cross-spectral density function, coherence, phase angle and associated
statistic parameters are studied. The semi-diurnal, diurnal and quarter-diurnal tidal components are significant for river
stages, which are also apparently related to astronomical tides of M2, S2, N2, S1, O1 and M4, MK4 or MS4 respectively. The time lags versus propagation distance are shown as linear distribution for two stream systems. The time
lags are 3.2, 4.0 and 2.5 (h) for semi-diurnal, diurnal and quarter-diurnal components in Tanshui River – Tanhan Stream system,
while 3.5, 3.5 and 2.2 (h) in Tanshui River – Hsintien Stream system.
This research was supported by the Institute of Nuclear Energy Research(INER), Atomic Energy Council, Taiwan, Republic of
China, under the fund of the Executive Yuan. The author appreciates Taiwan Provincial Government Water Resources Department
and Central Weather Bureau for providing useful data. 相似文献
8.
Jinn-yuh Hsu 《Geoforum》2005,36(5):654-666
This paper explores the dynamics of the economic development of Taipei City under conditions of globalization. Although Taipei City had undergone rapid industrialization and exploited the rural-urban division of labor since at least the 1960s, the city’s economic base changed dramatically after 1980. Initiating a process of industrial restructuring, the nation state encouraged high technology industries to help upgrade Taipei City’s role within global production chains. It was the transnational connection that kept regional growth within high ‘value-added’ activities. Instead of relying on a few major transnational corporations as the key agents of internationalization, Taipei City transformed itself into a node for high-technology knowledge, which connected the city with high-technology hubs elsewhere, and to Silicon Valley in particular, through transnational technical communities. At the same time, companies headquartered in the city extended their production chains across the Taiwan Strait to locate production facilities in the major coastal cities of mainland China. In consequence, Taipei City became a nodal city in these cross-border connections. These developments illustrate the limits of global city discourses which fail to pay sufficient attention to the role of developmental states and transnationalism in the process of global transformation. 相似文献
9.
台北盆地发育在弧陆碰撞的背景下,但长期以来对其构造特征一直认识不清,因此直接影响对盆地形成的认识.钻井、地震勘探等资料研究表明,山脚断层是控制盆地形成的主要正断层,而不是走滑断层,但并不是一条完整的正断层,而是由三个段落组成.各个段落控制一个沉积中心,彼此之间没有沟通.沉积中心的变化反映出山脚断层活动的各段落活动性并不一样,向北东方向随时间逐渐增强,目前最为活动的集中在中段和北段,南段已经停止活动.研究表明盆地中发育的一些北西向正断层是盆地中不同沉降中心沉降时的次生断层,而很难用走滑体系来解释.台北盆地并不是一个孤立发育的盆地,盆地是与金山断层东南的大屯火山群一同陷落的,具有一致的地球物理场背景、沉降规模以及正断层活动,因此广义的台北盆地从沉降范围和机制上还包括金山断层以南的大屯火山群.台北盆地的这些特征表明该盆地并不是走滑体系中形成的拉分盆地. 相似文献
10.
The objective of this study is to derive an effective stress‐based constitutive law capable of predicting rate‐dependent stress–strain, stress path and undrained shear strength and creep behavior. The flow rule used in the MIT‐E3 model and viscoplasticity theory is employed in the derivation. The model adopts the yield surface capable of representing the yield behavior of the Taipei silty clay and assumes that it is initially symmetric about the K0‐line. A method is then developed to compute the gyration and expansion of the loading surface to simulate the anisotropic behavior due to the principal stress rotation after shear. There are 11 parameters required for the model to describe the soil behavior and six of them are exactly the same as those used in the Modified Cam‐clay model. The five additional parameters can be obtained by parametric studies or conventional soil tests, such as consolidation tests, triaxial compression and extension tests. Finally, verification of the model for the anisotropic behavior, creep behavior and the rate‐dependent undrained stress–strain and shear strength of the Taipei silty clay is conducted. Copyright © 2010 John Wiley & Sons, Ltd. 相似文献