生态环境建设是我国西部大开发的切入点,退耕还林是生态环境建设的重点工程之一。我区从2000年开始退耕还林工程试点,至2006年,国家累计下达我区退耕还林任务1139万亩,其中退耕地还林471万亩,荒山荒地造林618万亩,封山育林50万亩。为了了解和掌握退耕还林工程的实施效果,自治区林业局于2006年7月起对全区2000年 Ecological environment construction is the starting point for the great development of western China. Returning farmland to forests is one of the key projects of ecological environment construction. Since 2000, our country has piloted the project of reverting cultivated land to forests. By 2006, the state has issued a total of 11.39 million mu of returning farmland to forests project, including 4.71 million mu of returned farmland and afforestation, 618 million mu of barren hills and wasteland and 50 million mu of afforestation. In order to understand and grasp the implementation of the project of returning farmland to forest project, the autonomous region’s forestry bureau