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年度	105	專案性質	實驗性質
專案類別	研究專案	研究主題	整治
申請機構	國立中山大學	申請系所	水資源研究中心
專案主持人	楊磊	職等/職稱	教授
專案中文名稱	以植物復育整治受汞污染土壤之可行性研究
中文關鍵字	植物、復育、整治、汞、土壤
專案英文名稱	The feasibility study of phytoremediation to treat mercury contaminated soils
英文關鍵字	Plants, Repopulation, Remediation, Mercury, Soil
執行金額	1,000,000元
執行期間	2015/11/17 至 2016/11/16
計畫中文摘要	本研究之目的是利用植生復育技術處理受汞污染之土壤，以盆栽實驗評估出具有最佳耐受性與最佳汞累積能力的植物種。實驗之植物種為耐鹽、耐旱的台灣原生種濱海植物，包含水黃皮、白茅、蘆葦、蘆竹、五節芒、甜根子草。植物放在半開放空間下，添加汞污染土壤實驗150天。實驗結果顯示，(1)本研究選用之六種植物確能透過植物萃取及植物穩定化機制吸收汞。(2) 六種植物之根、莖及葉部位皆會吸收汞。(3) 整株植體汞累積量越高，但該植體單位生物質量汞累積濃度不一定越高，非呈正向關係。(4) 植株生長率以甜根子草最佳，但因其累積濃度較少，推測此種植物較不易吸收汞，但是耐受度較佳。(5) 六種植物之汞累積顯示在空白組中並無明顯吸收作用，因此可推估該六種植物對大氣中的汞蒸氣並無吸收的情況發生。(6) 雖然整株植體汞累積量以水黃皮最高，但是植體單位生物質量汞累積濃度以蘆竹最高。因此，未來建議以單位面積植株樹木來評估何種植物為最佳植生復育汞污染土壤之植物種。
計畫英文摘要	The purpose of this study is feasibility study of phytoremediation treatment of mercury-contaminated soils. The plant species were evaluated with best endurance ability and best mercury accumulation ability by pot experiment. The experimental plant species is the salt-tolerant , drought-tolerant native plant species of seashore in Taiwan, including Millettia oraria, Imperata cylindrical, Phragmites australis, Arundo formosana Hack., Miscanthus floridulus and Saccharum spontaneum. plants were added to mercury contaminated soils for 150 days in a semi-open space. The experimental esults show that (1) the six plant species used in this study are able to absorb mercury through Phytoextraction and Phytostabilization.(2) These plants roots, shoots and leaves absorb heavy metal mercury in all six plants. (3) The higher the mercury accumulation in plant tissue, but the concentration of mercury in plant tissue is not necessarily higher, not strictly correlated. (4) The growth rate of Saccharum spontaneum is the best, but its mercury accumulation ability is less. It is presumed that Saccharum spontaneum is not easy to absorb mercury, but mercury accumulation ability is better. (5) The controls of six plants had no significant change in the mercury accumulation ability. Therefore, it can be inferred that the six plants do not absorb mercury vapor in the atmosphere. (6) Although the mercury accumulation capacity in plant tissue was highest in Millettia oraria, but the concentration of mercury in plant tissue was the highest in Arundo formosana Hack. Therefore, it is recommended to use the plant number per area to evaluate which plant has the best phytoremediation ability for mercury contaminated soils.