我國森林資源滯塵價值之研究

A study on forest dust-retention value in Taiwan

本研究分析森林滯塵服務量與森林滯塵價值之國內外相關文獻，歸納並整理前人研究的滯塵量測定與價滯塵價值方法，並計算台灣森林資源之滯塵價值。本研究引用羅傳秀等（2005）、黃尚義（2009）、邱祈榮等（2010）三人森林滯塵量之研究數據，並以第四次全國森林資源調查與2015 年林業統計各林型面積，與滯塵量與樹種關係、滯塵量與地點關係，推估全台灣森林滯塵量；再以前人文獻所提出之消減一公噸粉塵成本或增加一公噸滯塵量產生價值進行換算，推估出的全台滯塵量推估全台滯塵價值。本研究之實證結果顯示，全台森林資源之滯塵量分別為29,412,729.8公噸、8,178,223.8公噸、2,064,385.8公噸；全台滯塵價值分別為23,500,771,110元、6,534,400,812元、 1,649,444,225元，因為滯塵量評估方法並不同，且不同樹種、季節、地點，其森林資源滯塵量有所不同，故其滯塵效益有所差異。 In this study, we reviewed domestic and foreign literatures of forest dust retention service and forest dust retention value, summarized and compiled the method of measuring the amount of dust retention and evaluating the value of dust retention. According to the previous studies, the effi ciency of forest dust retention is very significant, but number of related research is not much. Some of research at home and abroad is to evaluate the amount of forest dust retention and the value in the specifi c area, there is no study to assess amount of forest dust retention and value in Taiwan. Therefore, we take the data from previous researches about forest dust retention and use the forest area of 4th national forest resource survey and forest statistics in 2015, considering with the relationship among tree species, season, location and dust retention, to estimate the total amount of forest dust retention in Taiwan. And then use the results of previous works to evaluate forest dust retention value in Taiwan. By three studies, these results demonstrate that the total amount of dust retention services in Taiwan are respectively 29,412,729.8 t/year; 8,178,223.8 t/year and 2,064,385.8 t/year. By three studies, these results demonstrate that the total value of dust retention services in Taiwan respectively are NT $ 2,550,771,110 NT $ 6,534,400,812, NT $ 1,649,444,225. The possible reason for the difference in the forest dust retention value is that the method of assessing the amount of dust in each unit is different. Resulting in a different tree species, seasons, places and the relationship between the amount of dust to assess the relationship between the amount of dust, resulting in a large gap between the amount of dust retention and retention value.