Vice director-general Cheng Hsi-chuan says that "in the past when judging lumber supply, we had to do ground surveys of the area of forested land, and then judge total volume by weighing samples of the different types of trees. But now, through remote sensing, we can easily measure the forested area, and, if clarity is high enough, We can even distinguish different varieties, making the job much easier."
副所長鄭祈全說，「以前計算木材材積，要把整棵樹砍下來當作樣本秤重，現在如果透過遙測，得到精度還夠的樹種光譜資料，就可以找出模式，推估材積，不用作地面測量。」