Seedling quality is a key factor in establishing forest plantations.

苗木质量对造林效果有重要影响。

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The South and Southeast regions in Brazil have the highest energy generation potential from agroforestry biomass due to the high concentration of forest plantations and sugarcane.

由于高度密集的森林和甘蔗种植，巴西的南部和东南部地区农林生物质的能源生产潜力最高。

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FRA 2005 also found that new forests and trees are being planted at increasing rates, but plantations still account for less than 5 percent of forest area, it notes.

《2005年全球森林资源评估》还发现，新的森林和树木种植速度在加快，但是《评估》指出，人工林仍不足森林面积的5%。

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On the environmental side, it notes that demand for biofuels has accelerated the clearing of primary forest for palm plantations, particularly in southeast Asia.

BBC: NEWS | Science/Nature | UN warns on impacts of biofuels

In Indonesia this would mean putting palm-oil plantations not on forest land but on degraded land, of which it has perhaps 40m hectares available.

ECONOMIST: Tropical forests�� best hope

On the estate of the aristocratic French de Heaulme family in the south of the island she discovered an untouched forest fragment amid the sisal plantations.

ECONOMIST: Madagascar's natural history: Tales in a twist | The