頁籤選單縮合
題 名 | 臺灣西部海岸沙丘之地形學研究 |
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作 者 | 石再添; 張瑞津; 張政亮; 林雪美; 連偵欽; | 書刊名 | 國立臺灣師範大學地理研究報告 |
卷 期 | 19 1993.06[民82.06] |
頁 次 | 頁99-148 |
分類號 | 351.65 |
關鍵詞 | 地形學; 西部海岸; 沙丘; 臺灣; |
語 文 | 中文(Chinese) |
英文摘要 | Coastal sand dunes are widely distributed along the western coast of Taiwan from Touchien Hsi to Erhjen Hsi. Based on maps work, airphoto interpretation, particle size analysis, field investigation, etc, the study results are summarized as follows: 1. The form and the magnitude of the western coastal sand dunes have close relationship with the source of 13 rivers' sand supply, alongshore current and wave action, power and direction of wind, terrains, rainfall, evaporation and vegetation. 2. The coastal dunes develop well on riversides of Chung Kang His, Holung Hsi, Choshui Hsi and offshore bars along Chianan coast. Two principal types of these dunefield may be distinguished, namely, active dunes and stabilized dunes. The two dunefield types contain a variety of dune features, such as transverse dunes, barchans, longitudinal dunes, and dome dune etc. 3. The grain sizes of beach and dune sand are quite uniform. The Md φ and δ φ on average of the dune sand is smaller than the beach sand. This shows that wave process is stronger than wind process. 4. Comparing the maps published in 1926 and 1984. the change of coastal dunes is clear. Because the dunefield was used as fishery or watermelon and sugarcane planting, most of the sand dunes were leveled off entirely. Some of the residual sand dune still exist at present fixed by windbreak forest. For sand dunes have the function of protecting coasts, they had better be well-planned and well-used so as to main-tain the sustainable utilization of land souces. |
本系統中英文摘要資訊取自各篇刊載內容。