Classification of regional land cover with modis data for biological conservation 数据的生物保护区域土地覆被分类
2.
Phasing in that standard by 2012 would save 15 times more oil than alaska ' s arctic national wildlife refuge is likely to produce over 50 years 逐步采用那个标准，到2012年，节约的石油将比阿拉斯加北极国家野生生物保护区在50多年内可能生产的多15倍。
