According to a survey,over the past 50-plus years some 70,000 ha of land have been afforested in Tibet,90 million trees have been planted beside villages,houses,roads and waterways,and 1.5 million cash trees have been grown.

• 据统计，五十多年来，西藏人工造林7万多公顷，“四旁”(村旁、宅旁、路旁、水旁)植树9000多万株，种植经济林木150多万株。