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題 名 | 地理統計方法應用於山坡地土地可利用限度分類精確化查定土壤因子之研究=Study of Geographic Statistic Approach on Precisely Investigating for Slope-land Utilization Limitation |
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作 者 | 陳文福; 林憶志; 陳明賢; | 書刊名 | 水土保持學報 |
卷 期 | 41:3 2009.08[民98.08] |
頁 次 | 頁297-309 |
分類號 | 434.278 |
關鍵詞 | 地理統計; 山坡地土地可利用限度; 數值高程模型; 地籍單元; 地籍坵塊; Land use capability classification for slopelands; DEM; Digital elevation model; |
語 文 | 中文(Chinese) |
中文摘要 | 台灣之山坡地土地可利用限度分類標準自1999 年修正後,隨著科技之大幅進步,在實際 查定時雖已漸利用數值高程模型圖層進行研判以查定其坡度因子,並輔以現場調查及確認,雖 已具可用性,惟各項基準因子之推求隨著科技不斷進步仍有精進、推廣之改善空間。 本研究以石門水庫集水區內蘇樂地段之完整地籍單元為範圍,利用地理統計方法將土壤採 樣結果,結合地理資訊系統、遙感探測技術、衛星定位與現地調查,應用於山坡地土地可利用 限度分類之管理。期使查定方法更加精確化與快速,將來或可全面應用於全國山坡地上。 所得結論有三:(一)可簡化查定手續:利用1m 之DEM,可據以得知坡度分佈情形,並配 合PDA 或將結果輸出紙上以作為現地輔助使用,除可節省時間外,並可增客觀性以減少因主 觀所造成之爭議。(二)可精確化查定結果:土壤有效深度調查配合地理統計分析,可快速了解 本區土壤有效深度之分佈,成果顯示本區土壤屬於甚淺層及淺層。由分析發現以1m 之DEM 分析各地籍坵塊坡度之結果比20m 之DEM 者精確。對於各地籍坵塊坡度查定,因具客觀性而 可減少因主觀所造成之誤判。(三)可多元應用:本研究以GIS 製作資料庫,除可製成土地可利 用限度分類之四項因子圖層外,並可提供試區或整個石門水庫集水區將來規劃之參考。 |
英文摘要 | The classification standard of limitation on slope-land utilization in Taiwan was set in 1999. Practically the DEM coverage with field survey has being developed for assisting classification decision with the progress of technology. However, the accuracy could be further improved with innovative technologies. The specific site was at Soo-Lur in the She-Men Watershed. The soil samples were collected and analyzed in the lab. Other geographic data were provided from Geographic Information System, Remote Sensing and Global Positioning System. This research was to evaluate the distribution of soil depth with the geostatistical method to improve the conventional method in classifying the slope-land utilization on site. There were three important conclusions : (1) The processes can be simplified: The distribution of slope from 1m×1m DEM could be stored in a PDA and easy to print out to help field survey. This method can save a lot of time. (2) The accuracy can be improved: Combining field survey and geostatistics could rapidly get the distribution data of soil depth. The result showed that most common classifications are “very shallow’’ and “shallow’’ soil layer in this site and proved the accuracy from 1m×1m DEM is better than 20m×20m. (3) The results can be multiapplied: Besides producing the geographic coverages of 4 factors for classification, the result could be applied to watershed management and drawing up. |
本系統中英文摘要資訊取自各篇刊載內容。