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頁籤選單縮合
題名 | 臺灣鹽田植群之研究=Vegetation of the Salterns in Taiwan |
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作者 | 陳添水; 陳明義; Chen, Tien-shui; Chen, Ming-yih; |
期刊 | 林業研究季刊 |
出版日期 | 20000900 |
卷期 | 22:3 2000.09[民89.09] |
頁次 | 頁81-90 |
分類號 | 371.5 |
語文 | chi |
關鍵詞 | 鹽田; 鹽生植物; 演替; Saltern; Halophyte; Succession; |
中文摘要 | 臺灣原有六個鹽場,總面積達六千餘公頃,惟歷經逐步裁廢,目前僅剩布袋、北門及七股三個鹽場,廢曬鹽田約有二千公頃,有些已自然演替為鹽生草澤或紅樹林。本研究就曬鹽田生育地土壤與積水性質、水位、以及植群分布、季節消長與演替加以探討,以供曬鹽田綠化之參考。鹽田積水之鹽分受海水引入、降水及蒸發等因素之影響,每年10月至翌年4月引入海水曬鹽,鹽分較高,電導度可高達60.9 mS/cm; 5-9月為雨季,鹽分略被稀釋。鹽田土壤pH值多在8以上。土壤鹽分偏高,尤以結晶池更高,電導度可高達63.9 mS/cm。鹽場之維管束植物共調查到32科106種。實際曬鹽之處,鹽分偏高,僅出現13科24種鹽生植物,主要為濱水菜及鹽地鼠尾粟,其次為鹽定及海雀稗,局部有欖李及海茄苳入侵。植酴覆蓋度主要隨水位變動與季節變化而消長,鹽定及海雀稗受水位影響尤大。植群之入侵廢曬鹽田,先從鹽分濃度較低之土場開始,再往兩側侵入蒸發池內。濱水菜為先驅植物,之後鹽地鼠尾粟、鹽定、海雀稗,以及紅樹林欖李、海茄苳等逐漸入侵,接著為蘆葦、水燭、冬青菊、田菁、水丁香、臭根子草、白茅、白花鬼針等一般草本,之後為馬纓丹、銀合歡等灌木與小喬木,最後由黃槿、構樹、血桐等一般喬木取代。 |
英文摘要 | The seedlings of China-fir (Cuninghamia lanceolata) and Camphor Tree (Cinnamomum camphora) were treated with simulated acid rain, in order to understand whether seedling growth, ions leaching, and nutrient cntent in tissues were affected. Simulated acid rain was a mixture of 3:1 equivalent concentration ration of nitric and sulfuric acid. The pH value was dilute with water to 5.6, 4.1, or 2.6. the seedlings of these two species were treated for 16 weeks and 12 weeks, respectively. Seedling diameter, seedling height, total biomass and leaf area of these two species decreased significantly under grown in pH 2.6. The seedlings of China-fir treated with moderately acid rain (pH 4.1) had a greater net seedling height growth, total biomass, and leaf area resulting from fertilizer (N) effect. Most of the ion concentrations in throughfall had higher values. It indicated that acid rain passing through the canopy of these two species could leach or wash off some cations and anions. In addition, there was a trend toward increasing the concentration of most cations and SO42- in throughfall with the increasing of rain acidity. The capacity of neutralizing acid deposition was more efficient for Camphor Tree leaves than for China-fir. Although there were a little different of ion leaching phenomena, this experiment also did be able to prove the field investigation. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。