【摘要】 台湾泥岩恶地因其特殊之土壤理化性质及区域微气候的相互恶性循环,衍生生态环境等问题。在以往之35年,裸化面积从1967年的2532hm2,至2001年11月已扩大为15539hm2。其表土大量流失、崩塌、河川含砂量激增、植被退化与微气候变异等破坏,更显示泥岩之环境劣化问题。以SPOT卫星影像判识泥岩裸露面积,探讨不同时期之地景变异,并应用地景生态理论量化泥岩地表不同土地利用之空间结构变化,分析地景结构变迁之生态内涵与生态指标意义。因子分析结果其主要变异为多样性因子与形状破碎型因子所影响,而应用马可夫链模式计算出不同时期之土地利用变迁内涵,此结果搭配指标分析可解释泥岩裸露面积与竹林面积皆持续扩大,乃由人为土地利用之活动及植被变迁所引起。更多还原

【Abstract】 It is the significant problem that the area of bald mudstones increases due to the poor condition of the soil-physical and microclimate In past the 35 years the area of bald mudstones expanded form 2 53258 hm2 (1967) through 15 539 hm2 (2001) Sediment yield per unit area in rivers from the bald mudstone area consequently increases and has reached to the top of world Moreover, the result in the vegetative degeneration, environmental destruction and microclimate change were caused by the landscape pattern change Analysis of landscape pattern change of bald mudstone area can understand the patch dynamic process how effect the nutrient, material and energy flow Meanwhile, the processes of landscape pattern imply the driving of land cover change Therefore, this paper uses the landscape metrics analysis the landscape configuration to affect ecological processes Otherwise, we also measure the transition probabilities of bald mudstone change to understand mechanism of the pattern re-allocation In the transition equilibrium probability(P1997-2001)matrix of land uses, the other land-use type transfer to mixed forest was 668%, the orchard was 626%, the bamboo forest was 4456%, and the mudstone was 425%  The results display that the patch dynamic relates to the human activity and the land cover tend to become the bamboo and mudstone更多还原