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題 名 | 強酸性煤渣捨石邊坡植生之復育=Revegetation on the Strongly Acidic Abandoned Coal Refuse Bank |
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作 者 | 林昭遠; 劉思謙; 林文賜; | 書刊名 | 水土保持學報 |
卷 期 | 30:1 1998.03[民87.03] |
頁 次 | 頁31-39 |
分類號 | 434.273 |
關鍵詞 | 煤渣捨石邊坡; 植生復育; 水土保持; Abandoned coal refuse bank; Revegetation; Soil and water conservation; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究係以臺北縣瑞芳鎮三榮煤礦為對象,綜合氣候、植生、土壤之調查分析, 探討強酸性煤渣捨石邊坡之植生復育方法;並篩選適生之耐酸植物,供強酸性煤礦棄石地植 生綠化之參考。 煤渣捨石地土壤呈極強酸反應,土壤之 pH 值約為 3.2,主要係因棄土石中含有大量之煤質 碎屑,土壤中萃取性硫、鋁含量甚高,硫氧化後形成硫酸根離子促使土壤之 pH 值驟降。交 換性陽離子鈣、鎂及有效性磷之含量極端缺乏,加上土壤在極強酸之反應下,鋁、鐵等微量 元素之有效性增加,致植物難以自然入侵生長。煤渣捨石地礫石之表面多為黏土所膠結,黏 土遇水時易將土壤孔隙封閉,土層中之酸性物質不易被淋洗流失,此為裸露捨石地長期間植 物無法自然入侵主因之一。 本區之氣候類型為亞熱帶重濕氣候,全年無缺水,坡面在裸露、多雨且入滲不易之情況下, 未受礫石保護之坡面沖蝕極為嚴重。初期篩選出煤渣捨石地之復育植生材料有榕樹、山鹽青 、高狐草、類地毯草等耐酸植物,尤其是類地毯草具走莖及耐蔭之特性,能有效抑制五節芒 入侵生長,與高狐草、山鹽菁等植物混播應用於媒渣捨石邊坡,可經濟有效達到早期綠化之 效果。 |
英文摘要 | This study investigated revegetation methods for the strongly acidic coal spoils through the climate, vegetation, and soil analysis at Sun-Zon coal mine in Taipei County. Suitable plants are also evaluated and selected in this study for use in revegetation reference on the abandoned refuse coal bank. Study results indicate that the soils show extreme acid reaction (soil pH=3.2) due to large amounts of coal debris in the spoils. Acid sulfate soils resulting from the oxidation of sulfur with the properties of nutrient deficiency and triggering the activation of trae elements are unfavorable for invasion plants to grow. In addition, clay particles are dominant and easy to seal the soil pores. Since acid substance can hardly be leached out of the soils, bare spoils will last for a long period of time. The mining site belongs to heavy humid and subtropical climate zone. Sulfuric acids resulted from the oxidation of acid sulfate soil are likly to cause significant damage to the environmental landscape. Ficus formosana Maxim, Rhus chinensis Mill. var. roxburghii(DC.) Rehd, Featuca arundinacea Schreb and Axonopus affinis Chase can be used as pioneer plants for restoration of strongly acidic abandoned coal refuse bank. |
本系統中英文摘要資訊取自各篇刊載內容。