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題 名 | 農地重劃區景觀異質性之信息分析=Study on Information Entropy Variation of Landscape Heterogeneity at Farmland Consolidation Area |
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作 者 | 林信輝; 孫明德; 陳意昌; | 書刊名 | 造園景觀學報 |
卷 期 | 13:3 2007.10[民96.10] |
頁 次 | 頁31-44 |
分類號 | 431.11 |
關鍵詞 | 景觀異質性; 農地重劃; 信息熵; Landscape heterogeneity; Farmland consolidation; Information entropy; |
語 文 | 中文(Chinese) |
中文摘要 | 臺灣地區自1958年辦理農地重劃迄今已將近五十年,經過數次的農地政策改革及整體經濟環境的變化,農民對於土地利用之方式亦隨著改變,而農地重劃區內亦產生不同的景觀。本研究以高雄縣大寮鄉大寮農地重劃區為案例,以該區1969年農地重劃後五個年期之航空相片基本圖為基礎,數化成土地利用圖,並結合景觀生態學之理論與地理資訊系統的觀念,探討農地重劃區內農地之景觀異質性。經分析結果,原為基質之農地,在重劃後初期,農地之信息量高,呈現聚集現象、極小異質性分布,顯示其仍為主要的地景元素;但經過三十餘年後,農地產生不同的土地利用結果,農地頻率逐漸降低,各研究線段逐漸出現較大異質性變化。因此,本區域原為單純農田的農業景觀,由於農地重劃之介入,推測由於都市化與人為干擾等因素影響,區內土地利用漸趨向於多樣化,信息熵逐漸升高、信息頻率則降低,而農地信息量亦逐漸減少,表示基質功能在該區域的控制能力逐漸降低。 |
英文摘要 | Farmland consolidation has been conducted for about 50 years in Taiwan since 1958. With the change of governmental land policy and the integrative agriculture environment, farmers utilize the land within the consolidation area in different ways obviously, and those result different man-made landscape. This case study chooses the consolidation area of Daliao Village, Kaohsiung County, used aerial photos of five periods after farmland consolidation in 1969, to create a classified and digitized database of each land use. This study also integrates the theory of landscape ecology and geographic information system (GIS) to explore the landscape heterogeneity of farmland. The result shows that because of the information content of farmland is high and gathering; the farmland is still the matrix of a landscape after initial consolidation. And after farmland consolidation over 30 years, the farmland was different used by natural and the land had diverse exploitations gradually. The farmland had consolidated and the variety of the land use, urbanized effects, man-made interferences, for these reasons, the units of land use were segmented into small, the information entropy and fractal dimension was high, the information content and the frequency of farmland reduced gradually, which means the control ability of matrix function of farmland also reduced. |
本系統中英文摘要資訊取自各篇刊載內容。