論台灣常見行道樹之問題（續）

The Problem of the Street Trees in Taiwan (continue)

台灣地區常見之行道樹如菩提樹、台灣欒樹、羊蹄甲、艷紫荊、雨豆樹與楓香，種植數量不少，而其植物體本身的果實、種子、樹根、茂密的枝葉、樹幹上的銳刺以及病蟲害、風害等，目前在台灣各地已造成諸多問題，不僅引發民怨，對維護管理單位亦是沉重負擔，未來其問題仍將持續，因此該如何處理這些問題樹種，也成為相關單位的難題。因為各地方政府用於綠美化之經費並非十分充裕，對於這些問題樹種，所造成維護管理費用的支出將不甚負荷。因此須及早認識這些樹種於各地所造成的問題，以及引發的民怨，另外亦須瞭解最適合栽種的方式與地點，以及樹木發生問題後之處理方式，當未來新種時，較有所依據。 Ficus religiosa, Koelreuteria henryi, Bauhinia variegate, Bauhinia blakeana, Samanea samanand and Liquidambar formosana are common street trees in Taiwan. Those species were planted so many that had caused many problems. Such as the flowers, fruits, seeds, roots, twigs and the thorns had caused people's much complains. Other problems such as the disease and pruning or cutting for safe resulted the ugly of the landscape and decreasing the shade of the tree crown. Now those trees had become the heavy maintenance burden in many places of Taiwan. ln the future, those problems will still exist, and the trees' age will increase and strong more and more. The problems will be more complicate. How to maintain these problem's trees will be more difficult. Now the money of landscaping is not sufficient and difficult to sustain. So we need to understand the problems and the complains of those trees, and how to plant them correctly.

Ficus religiosa, Koelreuteria henryi, Bauhinia variegate, Bauhinia blakeana, Samanea samanand and Liquidambar formosana are common street trees in Taiwan. Those species were planted so many that had caused many problems. Such as the flowers, fruits, seeds, roots, twigs and the thorns had caused people's much complains. Other problems such as the disease and pruning or cutting for safe resulted the ugly of the landscape and decreasing the shade of the tree crown. Now those trees had become the heavy maintenance burden in many places of Taiwan. ln the future, those problems will still exist, and the trees' age will increase and strong more and more. The problems will be more complicate. How to maintain these problem's trees will be more difficult. Now the money of landscaping is not sufficient and difficult to sustain. So we need to understand the problems and the complains of those trees, and how to plant them correctly.