2015考研英语阅读森林保护_大学英语阅读

2015考研英语阅读森林保护

　　到达目标后，在圈定好的500平方米区域内，他们用卷尺，测径规和手持激光设备对所有树木的高度和树围进行测量。

　　These measurements, and each tree s species, are recorded on a clipboard. One plotfinished; 959 more to go.

　　测量结果及每棵树的品种都会被记录下来。一块区域测量完成后，他们还要转战其余的959块区域。

　　A classic piece of forestry, then.

　　这是当时的一种传统林艺技术，

　　Boots on the ground.

　　采用人力进行实地考察，

　　Specimens duly counted.

　　准确测量标本。

　　But this is a study with a twist, for its purpose is to calibrate a new approach to thesubjectone that will gather information by the bucketload without the need to rely on quiteso many boots.

　　但一项新的研究将会使现状产生飞跃的转变，其目标是针对该课题开创一种新的测量方法即无须动用众多的人力物力就可收集到大量所需信息。

　　This new approach uses a technique called lidar.

　　这项新方法采用的技术称之为激光雷达术。

　　Like its cousins radar and sonar,lidar,works by broadcasting electromagnetic waves towards atarget and then building up a picture from the reflection.