The longleaf pine also captures carbon dioxide in the air.

长叶松也能吸收空气中的二氧化碳。

Most buildings built in the southern U.S. from the 1800s contained longleaf pine wood.

从19世纪开始，美国南部建造的大多数建筑都使用了长叶松木材。

The U.S. government has several programs to protect and expand longleaf pine forests.

美国政府有几个保护及扩大长叶松森林的计划。

Their goal is to bring back the longleaf pine.

他们的目标是使长叶松恢复。

Now, farmers and landowners in the Southeastern U.S. are growing new longleaf pine trees.

现在，美国东南部的农民和土地所有者正在种植新的长叶松。

The longleaf seeds need to grow in rich soil without other plants.

长叶松种子需要在没有其它植物的肥沃土壤中生长。

" The diversity of the longleaf pine system is below our knees, " he said.

" 长叶松系统的多样性就在我们脚下" ，他说。

The Kisatchie National Forest in west central Louisiana contains most of the remaining longleaf pines in that state.

路易斯安那州中西部的吉赛奇国家森林公园拥有该州余留的大部分长叶松。

Pound for pound, longleaf old-growth is stronger than steel.

一磅一磅，长叶老树比钢强。

Burroughs logged the longleaf pine trees that still grow abundantly here.

Burroughs 记录了仍然在这里大量生长的长叶松树。

Many of these species are now extinct or endangered, including the longleaf pine, which is what we handle most.

这些物种中有许多现在已经灭绝或濒临灭绝，包括我们处理最多的长叶松。

They also are home to about 40 types of animals and 170 reptile and amphibian species found only among longleaf.

它们也是仅生存在长叶松环境中的约40种动物和170种爬行动物及两栖动物的家园。

In a longleaf pine forest, grass will only grow if there are periodic forest fires that clear out some trees and let the sunshine reach the forest floor.

在长叶松林中，只有定期发生森林火灾，烧毁一些树木，让阳光照射到森林地面，草才会生长。