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表层土。

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

经过几十年的表土开采，岛上又重新覆盖郁郁葱葱的植被。

Bacteria are key players in the formation of topsoil.

细菌是表层土壤的重要组成部分。

That builds topsoil and prevents flooding.

这会形成表土，防止洪水。

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

大家可以看到表土层，地下水位，还有地下不同的分层。

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

当尽自然表层土并开始为耕种而犁时，他们就把土壤中掩藏的碳质暴露气中。

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

报告指出的问题包括表层土壤的侵蚀、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。

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

我们知道，我们只是触及这个复杂而重要的经济部门的表层土壤。

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

然后重要的是给表土充气并使其松散地堆积表面上。

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

景观已经退化，河流被珍贵的表土淤积。

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；它们锋利的蹄子会破坏表土。

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

A 层以下是表土层基本上 所有的附加物。

We endured pelting rainstorms that washed away our topsoil.

我们忍受着暴风雨的袭击, 冲走我们的表土。

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

它忽略地下水和表土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.

六英寸厚的表层土和一片平海。 宝贵的小块土地是有生产力的。

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

新的土地所有者不打算进口新的表土来使他们非洲收购的土壤更可耕种。

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，植物和草就可以防止表土被风吹走。

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化碳并泵出气，保留着宝贵的表土。

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

随着定居者开垦土地，建造美国中西部的大农场，越来越多宝贵的表土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，不进行表土剥离，这种做法大大减少甲烷的排放。