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題名 | 欖李耐鹽性的探討=Salinity Tolerance of Lumnitzera Racemosa Willd |
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作者姓名(中文) | 游仁正; 許博行; | 書刊名 | 林業研究季刊 |
卷期 | 21:4 1999.12[民88.12] |
頁次 | 頁9-16 |
分類號 | 436.11 |
關鍵詞 | 欖李; 耐鹽性; |
語文 | 中文(Chinese) |
中文摘要 | 本試驗以臺南縣七股鄉頂頭額汕地區之紅樹林植物--欖李(Lumnitzera racemosa Willd.)為材料,以探討欖李耐鹽分(Na�楔咮l�牷^含量以葉部為最高,其次為根部;葉部又以冠層下部位及老葉含量最高。Na�概t量隨葉齡的增加而增加,K�楞h隨葉齡的增加而降低,Ca�リ呲g�З市h變化不明顯,致使Ca��/Na�楚AMg��/Na�楔咢��/Na�楫漱餼�隨葉齡增加而下降。欖李適應高鹽分環境方式之一是將鹽分累積於老葉,藉著葉片的脫落,使鹽分排除體外,以減低高鹽分對欖李之傷害。試驗結果異顯示葉片的Na�楔咮l�狶t量與雨量間呈顯著相關。 |
英文摘要 | The objectives of this study were to monitor allocation of Na��, Cl�� and the other inorganic nutrients in Lumnitzera racemosa Willd. at Chiguu, Tainan county in order to understand the mechanism of this species survived in high salinity environment. A large amount of Na�� and Cl�� are accumulated in leaves and then in roots. The contents of Na�� and Cl�� in lower canopy and older leaves are higher than those in upper and younger leaves. The contents of Na�� increase and K�� descrease with increasing leaf age, however the contents of Ca�� and Mg�� are not different significantly. Thus, the ratio of Ca��/Na��, Mg��/Na�� decrease with increasing leaf age. It indicated brightly that L. racemosa could survive in high salinity by accumulating salt ions in older leaves and then the old leaves fell off. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。