Study on the effect of sealing off mountainous areas for afforestation (grass) in the Hanquangou valley;

Luliangshan Forests Area in Houma prefecture, located in Shanxi, based on close to nature forestry, restoration ecology theory, the closing hillsides to facilitate afforestation projects have changed the past unreasonable fencing target, unscientific design, etc.

The life form spectrum,leaf size spectrum,light and water ecology spectrum,predominance plant of before and after closing hillsides to facilitate afforestation community in rock desertification area of southeast Yunnan were studied by using plot method(quadrat investigation method).

This paper studies the control effects of Dendrolimus punctatus by closing hillsides to facilitate afforestation in Chongren and Yugan Counties in Jiangxi based on the principals of the sustainable pest management in forestry and ecology.

The concept of enclosure of the hillside for regeneration is elaborated to know the concept better.

To improve the level of integrated national afforestation inspection technology,the authors of this paper chose Hangjinqi as a study area and analyzed the effect of using remote sensing technology for checking the achievement and results of artificial afforestation,enclosure of the hillside for regeneration and aerial seeding.

As a traditional forestation method, closing the land for reforestation has experienced four phases of establishment, shrinkage, restoration and stabilization.

In order to protect ecology in this area, some measures, such as closing the land for reforestation, returning the grain plots to forestry and enclosing sheep etc.

Studies on the Control Effect of Closed Forest on Dendrolimus punctatus Walker;

Connecting with the real situation of Taiyuan City,this paper introduces the functions,conditions and basic principles of the closed forest,and puts forward the main measures for carrying out the closed forest,and expounds the types and modes of the closed forest.

This paper introduces the concept and the superiorities of the forest conservation, expounds the objects, conditions, types, modes and age limits of the forest conservation, and puts forward some countermeasures for speeding up the forest conservation of the Taihang Mountain.

On the basis of analysis and study of years monitoring data , some idea of my own on the feasibility ,urgency as well as protection measures of forest conservation in Helanshan mountain was put forward.