Soil seed bank of vegetation restoration region in mountainous area of Yuanmou dry-hot valley;

Using the technique of spray sowing with artificial soil,tree planting in cofferdam-made pits made by planting bags and planting with base material container seedlings,the vegetation restoration was carried out on opencast-abandoned quarry in Shuwei Mountain in Haining,Zhejiang Province.

In the light of the project of the research on technological approaches for vegetation restoration in ecological fragile area of northern part of Shanxi Province,this paper selects randomly ten farm families to investigate and analyze the changes of the rural economic structure of project area in five years.

This paper contrasted and researched the soil quality of different vegetation zone with plant restoration and farmland,including soil bulk density,soil porosity,and soil water stable aggregate structure in Wuqi county of Shanxi province.

The quick repairing method for the milling coal hole in the mining area is introduced.

Study of rapid repair technology for precasted assembling slab of cement concrete pavement;

The paper discussed the plan,procedure and usage effect of rapid repair construction of high grade concrete pavement for reference.