A heterotrophic nitrifier, named strain HN, was isolated from the greenhouse soil. The cells of isolates were Gram positive, rod or coccus.

从大棚土壤中分离到一株异养型硝化细菌，命名为菌株HN ，分离菌株为革兰氏染色阳性，球状或杆状。

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And digging holes to plant saplings releases greenhouse gases from the soil.

为种植小树而挖坑也会从土壤中释放温室气体。

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Gore also explores how deforestation, soil erosion, and the rising world population are multiplying the effects of rising greenhouse gas emissions.

戈尔还探讨了森林采伐、水土流失和日益增加的世界人口是如何对不断增加的温室气体排放产生乘数效应的。

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"At this field site, we are very lucky to have two key bioenergy crops growing side-by-side, which is allowing us to make a comparison of their effects on soil carbon and greenhouse gas emissions from the soil, " he told BBC News.

BBC: Measuring bioenergy crops' carbon footprint credentials

For instance, the Hadley Centre for climate research in the UK, published research only this week suggesting that forests will speed up climate change in the future, as the soil will start to emit more greenhouse gases than the trees absorb as the temperature builds up.

BBC: Carbon-trading in Bolivia

Techniques that keep greenhouse gases trapped in the soil, such as injecting seeds rather than tilling, have already led to lucrative contracts.

ECONOMIST: The rise of the sink | The