The diversity and ecological niche of xylophyta were analyzed based on the information obtained from the sampling plot of natural oak forest in the Qiaoshan area, northern Shaanxi.

Seasonal fluctuation of soil microbial biomass carbon in secondary oak forest and Pinus taeda plantation in north subtropical area of China;

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.

Study on the biomass and productivity of Mongolian oak forests in northeast region of China;

This paper analyzed the healthy level of Mongolian oak forest ecosystem in Beijing and tried to find the influencing factors of the forest health ecosystem and proposed the control methods.

The hydrological effects of five forest types namely Pleioblastus amarus forest,Phyllostachys pubescens forest,Bambusa rigida forest,Cunninghamia lanceolata forest and Quercus fabri forest in Changning Bamboo sea were studied.

Influence of low intensity burning on Quercus mongolica forest in Changbai Mountain Region;

Quercus mongolica forest in the Liaoheyuan National Forest Park in the upper reaches of Liaohe River;

Spatial structure of Quercus mongolica forest in Beijing Songshan Mountain Nature Reserve