Previous studies predicted massive releases of organic carbon from fields converted from grass to corn or other energy crops.

之前的研究表明，由草地转化成玉米地或其他能源作物用地的农田会释放出大量有机碳。

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Planting grass became popular in the 1990s as a way to save highly erodible soils and store carbon in the soil.

作为一种保护极易受侵蚀的土壤和在土壤中储存碳的方法，种草在1990年代很流行。

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Not only does the land produce more grass, said Lovell, but since the grass maintains deeper roots, it traps more carbon in the soil too.

土地不仅可以长出更多牧草，Lovell说，由于草的的根长得更深，它可以让土壤保持更多的炭。

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