Using computer to calculate forest base area instead of drawing can raise efficiency and precision.

本文用计算器计算的方法代替作图，求算面积，可提高效率和精度。

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So cultivating superior trees which suite to plant in pulp forest base is one of the most urgent tasks for now.

培育适宜纸浆基地林的树种成为当前最紧迫的任务之一。

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Western Sichuan's mountain region is the largest commercial forest base in Sichuan province and also one of the important timber areas in China.

川西山区是四川最大的用材林基地，也是我国主要木材产区之一。

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The team had hiked two miles from their base camp into the forest to cut fire lines.

NPR: Ex-Firefighter Relives Yellowstone's 'Black Saturday'

After a short flight from Kathmandu to the mountain hamlet of Lukla, it took me 12 days to reach Base Camp, trekking 160km and climbing 10, 000 feet, hiking through dense forest, over a dozen suspension bridges, above the tree line and, finally, into a frozen landscape of ancient rock and glacial ice.

BBC: Everest's growing problem

One of those surprises came during a visit to Eglin Air Force Base on the Florida panhandle, where he went to see the old-growth long-leaf pine forest.

CNN: Trekking 5,000 miles to connect man and wildlife