Ecological Forestry Research Articles

Ecological fragility and forestry strategies of Heilongjiang Basin

From ecological viewpoint, the most fragile river system among the four basins in China which are Zhujiang, Changjiang, Huanghe, and Heilongjiang is Heilongjiang Basin. The reasons are long-term “paying attention to utilization rather than to maintaining” in agriculture and “paying attention to getting rather than to giving” in forestry in addition to its scarce water resource, weak self-cleaning capacity, thin and soft soil, weak capacity of vegetation recover, etc. Those cause that the resources are consumed extravagantly, and 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 harmonious development of human and nature, to acknowledge that forestry can produces not only economic products but special ecological and spiritual products as well as, of which the latter two can not enter markets for circulation so that a compensation system must be set up in the national economy, to confirm that the soil and water conservation functions of mountainous forests are the key in region planning, to keep that the minimum slope is 6° for safe guarding the soil and water of erosion in mountainous area, and forcefully to develop ecological forestry of which the core is “low lose but high efficiency.”

The way of restoring and reestablishing broadleaved / coniferous mixed forest ecosystem from secondary forest of Mongolian oak

The necessity, basis, characteristic and methods of restoring and reestablishing broadleavcd / coniferous mixed forest ecosystem fronrthe secondary forest of Mongolian oak (Quercus mongolica)arc briefly set forth; then several effective methods of restoration and reestablishment are put forward and discussed as follows: openning up effect belt or island to establish horizontal order mixture; replenishing the blank niche to make vertical orderly mixture; planting artificial mixed forest to create biological diversity; developing ecological forestry, establishing integrated agroforcstry ecosystem; and closing the land for forest and preserving some stands considering special conditions and demands.

L'utilisation des données écologiques dans la pratique forestière au Québec

The contribution of ecological land classifications to forestry practice in Quebec, still remains limited. To identify the causes explaining this under use, 32 forest managers from the Quebec administrative region were interviewed. As expected, they integrate ecological knowledge poorly with their decision making, even though they acknowledge the importance of the different ecological factors. Since these factors are not generally part of the decision criteria used by their forest organisations, the managers have little incentive to make the efforts needed to find and acquaint themselves with the existing ecological documentation. Furthermore, the form generally given to these documents only partially meets their needs. Rather than ecological descriptions, these managers would prefer ecological evaluations. To resolve this transfer of knowledge problem, the concept of an ecological information system is proposed. Key words: Ecological data and forestry, ecological information system, data base, information base.

The ecology of forestry the ecological role of man, the forester, in forest ecosystems

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