Abstract:

From ecological viewpoint, the most fragile drainage among the four basins in China (those are Zhujiang, Changjiang, the Yellow River and Heilongjiang) is Heilongjiang Basin of which the water resource is not abundant and the capacity of self-cleanning is low.The soil is thin; its structure is soft so as not to endure erosion.It has low capacity to restore the vegetation.Additionally, "paying more attention to utilization rather than to maintaining "has been taken in agriculture; " Paying more attention to getting rather than to giving"has been taken in for estry for a longtime.The resources are consumed extravagantly.The ecological environments evidently worsen.To check the situation above and carry out sustainable development of forestry, we have to change the basic concepts, to set up the nature viewpoint of human evolution together with the nature, to comfirm that forestry can produces not only economic products but special ecological and spiritual products as well of which the latter two can not enter markets for circulation so that a compensation system must be se up in the national economic system, to confirm the soil and water conservation functions of mountainous forests are the key in region planning, to keep that the minimum slope is 6 degree for safeguard the soil and water of mountainous area, and forcefully to develop ecological forestry of which the core is"low expense but high efficiency".

Key words: Ecological fragility, Harmonious coexistense, Function and responsibility of forestry, Ecological forestryy