It also shows low unit stock volume,unreasonable forest age structure,low forestland use ratio and severe pest,disease and rat disaster.

Based on the analysis of the current management of the forests on Saihanba Tree Farm, and on the theory of classified management, countermeasures for forest sustainable development as regulating forest species structure and current forest age structure, regenerating tree species, preventing forest fire, resolving the countradiction of forestry with hushandry, etc, are put forward in this paper.

Stand structure and yield of the mixed white poplar and black locust plantations on sandy ridges between the Danube and Tisza rivers in Hungary;

In this paper,the stand structure of Bambusa pervariabilis×Dendrocalamopsis Daii is analyzed on the basis of extending the stand in the areas of converting farmland to forest program.

From the point of view of relationship between stand structure and silvan health,classifying forest by health was brought forward.

, pure forest and mixed forest) and forest structure of bamboo forests such as density, age structu.

Aiming at high quality and benefit of Dendrocalamus latiflorus for bamboo shoot, based on the study of relations among main factors of forest structure and economical characters of bamboo shoot, a high-yielding forest structure was established by trend face measure.

How to manage the over_logged natural forest to keep its perfect forest structure and to bring good benefit is one of the keys to ensure the over_logged natural forest ecosystem succession ahead.

The author studies on rule in change of trunk shape structure for pulp forest of Phyllostachys pubescens Mazel ex H.