That builds topsoil and prevents flooding.

这会形成表土，防止洪水。

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

过几十年的表土开采，岛又重新覆盖了郁郁葱葱的植被。

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。

And finally, in 2016, a layer of rock and topsoil was laid down, finishing the restoration.

最后， 2016 年，湖床铺了一层岩石和表土，修复工作最终完成。

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

景观已退化，河流被珍贵的表土淤。

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表面。

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 所有的附加物。

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

它忽略了地下水和表土以及生物物种网络等资源的枯竭。

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，保留着宝贵的表土。

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。

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，但现雨水倾盆而下， 冲走了表土。

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，这种做法大大减少了甲烷的排放。

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。

There is the opportunity to sequester a great deal of carbon in topsoils around the world by changing the agricultural techniques.

通过改变农业技术，有机会世界各地的表土中封存大量碳。

Decades of overgrazing, climate change-induced droughts, and poor farming practices are stripping not only the Sudanian grasslands of their once fertile topsoil but hundreds of other regions like it across the world.

几十年的过度放牧、气候变化引发的干旱和不良的耕作方式，不仅使苏丹草原失去了曾肥沃的表土，也使世界其他数百个类似的地区失去了表土。

And Jackson knows that the way that most crops are grown around the world today is stripping the earth of the fertile topsoil we need to feed future generations.

杰克逊知道，当今世界大多数农作物的种植方式正剥夺我们养活子孙后代所需的肥沃表土。

He got together with a group of scientists, and they bred perennial grain crops which have deep roots that anchor the fertile topsoil of a farm, preventing erosion and protecting future harvests.

他与一群科家聚一起，他们培育出多年生的粮食作物， 这些作物的根深蒂固， 可以固定农场肥沃的表土， 防止侵蚀并保护未来的收成。

Half of the country is covered by what's called the Canadian Shield — a huge area of exposed rock with only a tiny layer of topsoil where farming is effectively impossible and winter temperatures are severely cold.

加拿大一半的国土被所谓的加拿大地盾覆盖——这是一大片裸露的岩石，只有一小层表土，那里几乎不可能耕作，冬季气温非常寒冷。