Land-use Dynamics of Shihmen Reservoir Catchment using Photogrammetry and Markov Model

應用航測技術與Markov模試探討石門水庫集水區之土地利用動態

吳治達(Chih-Da Wu) ； 鄭祈全(Chi-Chuan Cheng) ； 莊永忠(Yung-Chung Chuang) ； 詹進發(Jihn-Fa Jan)

《航測及遙測學刊》 16卷4期 (2013/01) Pp. 289-297

https://doi.org/10.6574/JPRS.2013.16(4).5

摘要

本研究旨在應用航測技術與Markov模式以分析石門水庫集水區之土地利用動態，並探討人為開發對崩塌地所產生影響。研究方法先利用航照影像及數位航測技術，以獲取2004年及2007年兩時期之土地利用、人為開發及崩塌地之分佈資訊；之後透過轉移矩陣之統計，以了解人為開發及崩塌地間的轉變；最後藉由Markov模擬以推估未來之土地利用變遷，進而探討石門地區之土地利用於時間序列上的變化情形。研究結果指出，透過數位航測之影像判釋，共將研究區劃分為森林、人為開發、道路、水體及崩塌地等五種利用型，其中人為開發及崩塌地所佔比例，在2004年至2007年間均呈現上升的趨勢；並且在所有的土地利用型中，又以人為開發轉變為崩塌地之比率最高；最後Markov模擬之結果指出，依據目前的趨勢，未來石門水庫地區之人為開發及崩塌地都將呈現上升的情形。

關鍵字

航測 ； Markov模式 ； 土地利用 ； 人為開發 ； 崩塌

並列摘要

This study aims to assess the land-use dynamics of Shihmen reservoir catchment using photogrammetry and Markov model. The objective was to investigate the effects of human development on landslide. First, ERDAS Leica Photogrammetric Suite (LPS) and GeographicInformation System (GIS) were used to interpret the land-use types, and further to examine the land-use changes during 2004 to 2007. A transition probability matrix was then calculated to realize the dynamic relationship between human development and landslide. Finally, the Markov model was developed based on current land status for simulating the future land use changes. The results showed that the study area was classified into five land-use types (i.e., forest, human development, road, water, and landslide). Both human development and landslide areas revealed an increasing trend during 2004 to 2007. The result of transition analysis pointed out that human development has the most conversion into landslide as comparing with other land types. The simulation of future land-use change using the Markov model showed that, the occurrence of landslides in the Shihmen reservoir catchment would be increased based on the current land dynamic.

並列關鍵字

Photogrammetry ； Markov model ； Land-use ； Human development ； Landslide