Sensitivity of soil respiration to temperature in a Quercus variabilis secondary forest and a Pinus taeda plantation in north subtropical area of China:A laboratory simulation;

The effect of different thinning intensity on Pinus koraiensis plantations;

Rats population structure and the occurrence regularity in Pinus koraiensis plantation;

Spatial distribution and compositional evolution of soil cation exchange capacity in Pinus koraiensis plantation;

Study on characteristics of distribution of rainfall in Pinus tabulaeformis plantation in Daqing-Mountains

By adopting the concept of space as a substitute for time, a field investigation was conducted in the Malan forest region on Loess Plateau to study the plant species diversity of Pinus tabulaeformis plantations at different restoration stages and the changes of soil fertility.

The Pinus tabulaeformis plantation is a low and middle hill type of the zonal vegetation and is distributing in the low hill shade slope and half shade slope in Beijing mountainous areas.

Litter-fall and the water-holding characteristics of litter in a 23-year-old artificial Pinus tabulaeformis Forest were studied from September, 2000 to October, 2003.