That builds topsoil and prevents flooding.

这会形成，防止洪水。

Bacteria are key players in the formation of topsoil.

细菌是层壤的重要组成部分。

The island is lush with greenery again, regrowing after decades of topsoil mining.

经过几十年的开采，岛上又重新覆盖了郁郁葱葱的。

Finally, add a layer of compost and a layer of topsoil in equal amounts.

最后，添加一层堆肥和一层等量的层。

When humans started draining the natural topsoil, and ploughing it up for planting, they exposed the buried carbon to oxygen.

当人类耗尽自然层并开始为了耕种而犁田时，他们就把壤中掩藏的碳质暴露在了氧气中。

So, you're seeing at the topsoil, you have the water table, the different layers underneath the ground.

大家可以看到层，地下水位，还有地下不同的分层。

We know we have only scratched the topsoil of this complex and important economic sector.

我们知道，我们只是触及了这个复杂而重要的经济部门的层壤。

They eat close to the roots, preventing plants from regrowing; their sharp hooves damage topsoil.

它们靠近根部进食，阻止物重新生长；它们锋利的蹄子会破。

Then it's important to aerate the topsoil and leave it loosely packed on the surface.

然后重要的是给充气并使其松散地堆积在面上。

We endured pelting rainstorms that washed away our topsoil.

我们忍受着暴风雨的袭击, 冲走了我们的。

The authors note widespread erosion of topsoil, forest felling, acidifying oceans, extreme weather, plastic in the seas, overfishing and more.

报告指出的问题包括层壤的侵蚀、森林砍伐、海洋酸化、极端天气、海洋的塑料污染、过度捕鱼以及更多问题。

So, the landfill changed its routine, keeping the topsoil in place until just before the trash is dumped, greatly reducing methane emissions.

那么，这个垃圾填埋场一改常规，垃圾倾倒之前，不进行剥离，这种做法大大减少了甲烷的排放。

Landscapes were already degraded, rivers were silted with precious topsoil.

景观已经退化，河流珍贵的淤积。

The new landowners are not planning to import new topsoil to make their African acquisitions more arable.

新的地所有者不打算进口新的来使他们在非洲收购的壤更可耕种。

When it gets this dry, plants and grasses are all that keep the topsoil from blowing away.

当它变得如此干燥时，物和草就可以防止风吹走。

While arid regions may get the same amount of rain, it now comes in torrents, washing away the topsoil.

虽然干旱地区可能会有同样多的雨水，但现在雨水倾盆而下， 冲走了。

Below the A horizon are layers of basically all the extras from the topsoil.

A 层以下是层基本上 所有的附加物。

It ignores the depletion of resources like groundwater and topsoil and the web of living species.

它忽略了地下水和以及生物物种网络等资源的枯竭。

OF SIX INCHES OF TOPSOIL AND A MEAN SEA. PRECIOUS LITTLE OF THE LAND IS PRODUCTIVE.

六英寸厚的层和一片平海。 宝贵的小块地是有生产力的。

You could almost see them drawing out carbon dioxide and pumping out oxygen, holding on to precious topsoil.

你几乎可以看到它们吸收二氧化碳并泵出氧气，保留着宝贵的。