Applying the Geographic Information System to Analyze the Spatial Distribution of Spizaetus nipalensis nipalensis in Taitung

• Main Authors: Chin-Shang Ho, 何錦尚
• Other Authors: Chaur-Tzuhn Chen
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/74043812093905875787

碩士 === 國立屏東科技大學 === 森林系 === 94 === The raptor is a species in the top of food chain that is an important environmental indicator, if it to be there, the ecosystem is relatively stable. Mountain Hawk Eagle is the largest resident raptor in Taiwan which is in the endangered wildlife list and protected by the CITES . The purpose of this study is to understand the distribution range and ecology of Mountain Hawk Eagle in Taitung. Further more, we want to know the relationship between the distribution and ecological environment using the Geographic Information System. The data used in this study are from the raptor survey conducted from Jan. 2004 to Feb. 2006, we try to predict the distribution model of the Mountain Hawk Eagle by using the digital coverage of the human development, digital terrain, vegetation, and land-use pattern to predict the distribution model of Mountain Hawk Eagle in Taitung. In this study, we found the distribution of the Mountain Hawk Eagle is significantly related to the population density, road development and urban development. In the place where there is lower population density, the farther distance to the road and urban, the occurrence frequency of the Mountain Hawk Eagle is higher. In the topography factors, we found the distribution of the Mountain Hawk Eagle is significantly related to the elevation and slope factor, but not significantly to the aspect. We found the highest frequency is between the elevation of 1,000 m to 2,000 m and the slope of 25° to 45°. The occurrence frequency of the Mountain Hawk Eagle is significantly related to both the vegetation-landuse pattern and NDVI. We found the highest frequency is in the forest pattern and middle to high NDVI. We used spatial environmental factors in this study. The spatial distribution model of the Mountain Hawk Eagle established by logistic regression was significant with the environment factors of elevation, slope and urban. Finally we established the spatial distribution of the Mountain Hawk Eagle based on environment factors to deduce the occurence probability map of the Mountain Hawk Eagle in Taitung that is a reference for the conservation for Mountain Hawk Eagle in future.