There should be at least two lines in each windbreak.

每个防风林至少应该包含两条防线。

One method of soil conservation is the use of windbreaks.

土壤养护的一个办法就是使用防风林。

It acts as a good windbreak, prevents sand erosion, and is salt resistant.

有着极强的防风固沙和耐盐能力。

But here is something interesting about windbreaks.

但这有一些关于防风林的有趣之处。

Locally grown trees and plants are considered the best choices for windbreaks.

当地种植的树木和植物被认为是防风林的最佳选择。

Without a canopy, they trap more snow, their mass forming a windbreak for drifts too deep for the reindeer to walk or dig through.

没有树，就会积聚更多的雪，的质量为驯鹿行走或挖掘太深的漂流物形成防风屏障。

These studies found that grain harvests were as much as twenty percent higher in fields protected by windbreaks compared to fields without them.

研究发现，与那些没有防风林保护的农田相比，那么有保护的农田谷物产量能提高20%。

One method of soil conservation is the use of windbreaks. Windbreaks are barriers formed by trees and other plants. Farmers plant these barriers around their fields.

土壤保护的一个办法就是使用防风林，防风林是由树木和其他作物做成的障碍，农民在农田周围种上这些障碍物。

By serving as a windbreak in the winter and providing shade in the summer, trees can help homeowners conserve energy, save money and more.

通过在冬天充当防风林，在夏天提供荫凉，树木可以帮助房主节约能源，节省金钱等等。

The second line, right next to it, can be shorter trees and other plants with leaves. Locally grown trees and plants are considered the best choices for windbreaks.

第二个紧挨着的是低矮些的有叶子的树。当地长的树木和作物最适合做防风林。