2009-08-012024-05-17https://scholars.lib.ntu.edu.tw/handle/123456789/693328摘要：隨工商業快速發展、汽機車輛急速膨漲及工廠不斷設立，空氣污染已成為全球及臺灣地區共同面臨的嚴重問題；而高濃度臭氧污染公害則是世界公認最嚴重的空氣污染物。景觀植物除有增添景觀美感的功能外，更有提升都市綠蔽率、改善市容、保護表土及減少空氣污染等多項功能；但都市植栽要長期維持其功能，必須對空氣污染具有相當程度的抗耐性，而不同植物種類對臭氧污染抗耐性具有相當大的差異，且若透過植體本身生理表現及生化反應，可在受害初期即偵測出傷害；傷害早期臭氧濃度生理測值往往較肉眼可見病徵表現更值得信賴，對災害預測及防範措施亦較具可行性。故本計畫擬以景觀花壇植物為對象，首先針對植物體本身對臭氧污染的耐受能力做分級，同時利用生理指標(空氣污染抗耐指數、葉綠素螢光、電解質滲漏率、過氧化氫、丙二醛與脯胺酸含量等)作為篩選依據，期能求得臭氧抗耐性的篩選指標；其次，以抗耐臭氧能力較佳之植物與對臭氧敏感之植物進行比較，了解其生理表現，再針對抗耐機制(避性：氣孔導度、密度、型態等；抗性：抗壞血酸、SOD、CAT與POX等)以及相關的植物荷爾蒙(乙烯、水楊酸、茉莉酸等)進行較深入之學理探討與釐清。此外並尋求提升臭氧抗耐性之方法，選擇對臭氧抗耐性較弱的植物種類，經由外加藥劑處理(EDU、水楊酸、乙烯抑制劑等)或改進栽培管理(施肥、乾旱與光度控制等)的方式，期能提昇或改善臭氧抗耐能力。整體試驗結果預期將可增進植物與臭氧相關學理並有效提昇環境綠美化的技術。<br> Abstract: It is urgent that the acute problem of air pollution in Taiwan and in the world be solved, and ozone is the most serious one of all air pollutants. The landscape plants have the functions to beautify and improve the vision, raise the greening cover percentage and protect the surface soil of city. Besides, they even could reduce the air pollutants. So, these plants must have assistance or tolerance to air pollutants, in order to keep this function for an extended period. There is a very diversity of the ability in tolerance to ozone among different plants. The injuries will be detected by the physiological and biochemical parameters of plants at early stages of ozone fumigation. Furthermore, these parameters would be more reliable than the visible symptoms, and be practicable to forecast and alert against to ozonic damage. Therefore, this study will be focused on three part to investigate：1. Bedding plants are classed with the tolerance to ozone by testing some physiological measurements (air pollution tolerance index, chlorophyll fluorescence, electrolyte leakage and the content of H2O2, malondialdehyde, proline, etc), which will be sifted as the indexes. 2. Theories of the bedding plants to avoid ozonic damages (conductance, density, shape of stomata, etc), to resist damages (the content of ascorbic acid, superoxide dismutase, catalase, peroxidase, etc) and to react with related hormones (ethylene, salicylic acid, jasmonic acid, etc). 3. Using some chemicals (Ethylenediurea, salicylic acid, inhibitors of ethylene) or advancing cultural practices (control fertilizer, water and light supplication) to improve the tolerant ability of bedding plants to ozone. These results will not only be expected to build up the theories correlated with plants and ozone, also to improve the greening techniques effectively.空氣污染臭氧花壇植物抗耐性生理指標Air pollutionozonebedding plantstolerancephysiological index