臺灣海岸山脈北段地勢與土地覆蓋之分析

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题名:	臺灣海岸山脈北段地勢與土地覆蓋之分析 Terrain and Landcover Analysis of the Northern Coastal Range, Taiwan
作者:	鍾孟翰 Chung, Meng-Han
贡献者:	地學研究所地理組
关键词:	地景敏感度空間分析地勢評價土地覆蓋 Landscape Sensitivity Spatial Analysis Terrain Evaluation Land Cover
日期:	2015
上传时间:	2015-02-04 14:39:23 (UTC+8)
摘要:	本研究以海岸山脈北段為例，利用40公尺解析的數值高程模式，算取梯度、粗糙度和區域起伏度這三個地勢參數，隨後依據各參數規模頻率呈現的天然分界，進行地景分類和分區，建立地景敏感度指標及其空間分布圖。本文將海拔高度獨立出來進行分類、區劃，它是根據天然界線和參考植群研究文獻的綜合判斷成果。論文同時利用豐濱溪流域的GeoEye影像，進行土地覆蓋分類；土地覆蓋是以監督式分類，將其分為植被、水體、裸露地(包括聚落)、陰影。地景敏感度指標所作的地景分類和分區，與地質分區、海拔高度、土地覆蓋分區進行比較，分別討論後三者與地景敏感度指標的關係。結果顯示，地景敏感度指標使用的三個地勢參數，彼此相關性高。它與土地覆蓋、海拔高度、岩性、聚落的分類分區，也相當契合。本文初步提出一個地景敏感度指標，希望未來能藉此與土地開發和利用的成本分析結合，作為建立區域地景永續發展的地勢評價基礎。 This study proposes a theoretical framework to practice terrain assessment in the northern Coastal Range of Eastern Taiwan, based upon 40 m by 40 m digital elevation model. Parameters being concerned in the terrain classification include gradient, roughness, local relief, and the divisions of orders for each parameter are realized from the analysis of histogram (frequency and magnitude distribution) of each parameter themselves, upon which the index of landscape sensitivity and its spatial distribution are established. The elevation is analyzed and classified independently, and it is synthesized from the natural breaks of the histogram of magnitude and frequency of elevation and the literature of the distribution of vegetation. A supervised land cover classification is practiced for Feng Bin basin by Geoeye-1 satellite image, and the land cover is divided into four types – vegetation cover, water surface, settlement, and shadow. The classification and zoning of the landscape sensitivity index are overlaid with geological map, elevation zoning, and land cover map, and their relationship are discussed. The result shows that the correlations between three parameters being used in the landscape sensitivity index are high. The zoning of the landscape sensitivity coincides well with the geological map. It is also matched well with the distribution of land cover, elevation distribution and settlement distribution. This thesis proposes a preliminary index of the landscape sensitivity, and it is in future combined with the cost-benefit analysis for land development and land use to serve as the basis of tarrain evaluation for the sustainable development.
显示于类别:	[地理學系] 博碩士論文

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