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表层。

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

经过几十年表开采，岛上又重新覆盖了郁郁葱葱植被。

Bacteria are key players in the formation of topsoil.

细菌表层重要组成部分。

That builds topsoil and prevents flooding.

这会形成表，防止洪水。

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

大家可以看到表层，地下水位，还有地下不同分层。

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

当人类耗尽自然表层并开始为了耕种而犁时，他们就把中掩藏碳质暴露在了氧气中。

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

报告指出问题包括表层侵蚀、森林砍伐、海洋酸化、极端天气、海洋塑料污染、过度捕鱼以及更多问题。

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

我们知道，我们及了这个复杂而重要经济部门表层。

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

然后重要给表充气并使其松散地堆积在表面上。

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

景观已经退化，河流被珍贵表淤积。

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

它们靠近根部进食，阻止植物重新生长；它们锋利蹄子会破坏表。

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

A 层以下表层基本上 所有附加物。

We endured pelting rainstorms that washed away our topsoil.

我们忍受着暴风雨袭击, 冲走了我们表。

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

它忽略了地下水和表以及生物物种网络等资源枯竭。

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

六英寸厚表层和一片平海。 宝贵小块地有生产力。

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

新地所有者不打算进口新表来使他们在非洲收购更可耕种。

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，植物和草就可以防止表被风吹走。

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，保留着宝贵表。

As settlers cleared land to create the great farms of the American Midwest, more and more valuable topsoil eroded into the Mississippi.

随着定居者开垦地，建造美国中西部大农场，越来越多宝贵表被侵蚀成密西西比河。

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，不进行表剥离，这种做法大大减少了甲烷排放。