Gap characteristics and its effects on community regeneration of Quercus liaotungensis forest on Loess Plateau;

Soil physical properties and leaf photosynthetic characteristics in three stands,Betula platyphylla forest,Quercus liaotungensis forest,and Betula platyphylla-Quercus liaotungensis mixed forest,which were located in the secondary zone of Ziwuling Forest of the Loess Plateau,were studied.

By means of the standard-timber harvesting methods, the bicycled quantities and bio-cycle patterns of nutrient elements and the stand biomass in Quercus liaotungensis forest, Pinus tabulaeformis forest and artifical Robinia pseudoacacia forest, the dominant communities in warm temperate zones were studied with Ziwulin Mountain lying in Hilly Loess Regions as the research area.

This paper studied the soil physical-properties under Populus davidiana, Quercus liaotungensis, and Populus davidiana-Quercus liaotungensis mixed forest in the Ziwuling forest asea of Loess Plateau, and the leaf photosysthetic characteristics of these three types of forests.

A study on the mineralized geological conditions of gold placer of Liaodong Region;

The method of home-made red wine processing in Liaodong region (the eastern side of Liaoning Province) is introduced.

The boron deposits in Eastern Liaoning Province occur in Liaohe Group Lieryu formation,which is famous as the "boron-bearing rock series",showing obvious control by stratic lithology.

The Advantageous Resource Utilization and Exploitation Discussed——Analyze the resource utilization and exploitation between East Liaoning Province and Korea;

There exist four unconformity surfaces in Precambrian in east Liaoning Province.