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題 名 | 六種草坪草滯塵效益之評估及其機制之探討=The Dust Adsorption Capacities of Six Turfgrass Species and the Related Mechanisms |
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作 者 | 郭毓仁; 葉元純; 張育森; | 書刊名 | 中華農學會報 |
卷 期 | 7:5 民95.10 |
頁 次 | 頁488-498 |
分類號 | 377.2124 |
關鍵詞 | 落塵; 草坪草; 滯塵能力; 電子顯微鏡; 葉綠素計; Dust; Turfgrass; Dust adsorption capacity; SEM; Chlorophyll meter reading; |
語 文 | 中文(Chinese) |
中文摘要 | 落塵對人體之影響主要是引發人體呼吸系統之疾病。草坪是地被的一種,不但有淨化空氣的功能,也具有景觀美化的價值。本研究的目標,在於了解不同草坪草品種間對落塵的吸附程度及其型態結構上的吸附機制,同時了解是否葉片滯塵量與葉綠素計讀數有其相關性存在,且不受品種差異所影響。本研究以台北市立古亭國小空氣品質監測站為田間實驗地。以台灣常用的百慕達草‘’Tifway’、普通百慕達草、聖奧古斯汀草‘Floratine’、結縷草‘Emerald’、熱帶地毯草、及台灣原生假儉草為材料,定期監測草坪草吸附落塵及葉綠素的變化,同時以實驗室環境控制條件下作為田間對照因子。結果發現不論是田間或對照組試驗都顯現假儉草及熱帶地毯草滯塵能力比起細葉種百慕達草及結縷草的來的顯著。經過電子顯微鏡對不同草種的葉表觀察發現,寬葉種的假儉草及熱帶地毯草葉子表面結構較為粗糙,因而可能可以吸附較多的落塵於葉表面,而細葉種的結縷草葉表則較為平滑,其吸附落塵的能力較差。研究發現表面結構的粗糙度是影響植物吸附落塵的關鍵之一。本結果不論是在田間試驗或實驗的環境控制下都發現草坪草的確在落塵的吸附能力,及淨化空氣品質上具有很好的效果。本研究也發現當葉片滯塵越多時,其葉綠素計讀值越低。因此利用簡單的葉綠素計方法不失為一個簡單有效的方法來了解當時的空氣污染程度。 |
英文摘要 | Air pollution, especially dust, is the most serious problem that affects the health of children's respiration system. Ground cover plants, such as turfgrass, are good for air cleaning. However, the dust absorption capacity is varied by genetic differences. Common bermudagrass (Cynodon L.C. Rich), bermudagrass 'Tifway' (C. dactylon × C. transvaalensis "Tifway"), centipedegrass (Eremocchloa ophiuroides (Munro), tropical carpetgrass (Axonopus compressus (Swartz) Beauv.), St. Augustinegrass 'Floratine' (Stenotaphrom secundatum (Walt.) Kun), and zoysiagrass 'Emerald' (Zoysia japonica × Z. tenuifolia) were chosen in this research. Experiments were conducted both in the field and under controlled chambers. The relationship between dust adsorption capacities and the greenness of turfgrass leaves were determined using SPAD-502 chlorophyll meter. The mechanisms of dust adsorption by leaves were also examined by scanning electron microscopy (SEM). The results showed that species with wider leaves, such as centipedegrass and tropical carpetgrass, have higher dust adsorption efficiency, as compared to narrow leaf species, such as common bermudagrass, bermudagrass'Tifway', and zoysiagrass'Emerald'. This phenomenon is probably caused by the difference in leaf morphology of turfgrass. Examinations on SEM revealed that species with higher roughness of leaf surface structure, such as centipedegrass and tropical carpetgrass, absorbed more dust than those with smooth leaf surface, such as bermudagrass cultivars and zoysiagrass. The results also indicated that the chlorophyll meter reading for most turfgrasses was closely linked to dust accumulation on the leaves. The chlorophyll meter measurements offer an alternative method for detecting the dust pollution. However, the standard curve must be established of different turfgrass species in the future. |
本系統中英文摘要資訊取自各篇刊載內容。