天然林保护工程。这是我国投资最大的生态工程。包括三个层次：全国停止长江上游、黄河上中游地区天然林采伐；大幅度调减东北内蒙古等重点国有林区木材产量；由地方负责保护好其他地区的天然林。工程计划调减木材产量１９９１万ｍ３，造林１．９亿亩，管护森林１４．１５亿亩 Natural forest protection project. This is China’s largest investment in ecological engineering. There are three levels: the whole country stops the harvesting of natural forests in the upper reaches of the Yangtze River and the upper and middle reaches of the Yellow River; drastically reduces the output of timber in key state-owned forest areas such as Inner Mongolia in Northeast China; and the local authorities are responsible for protecting the natural forests in other areas. The project plans to reduce the output of timber by 19.1 million m3, afforestation of 1.9 million mu and the management of 14.15 million mu of forests