Changes of species composition and diversity in different age-classes of undergrowth vegetations in Cupressus funebris plantations in Yichang suburb;

Short-term effects of tending on the undergrowth diversity of Platycladus orientalis plantations in Beijing mountainous areas;

Based on 2×2 contingency table,this paper conducts some analyses of the inter-specific association between dominant tree populations of Platycladus orientalis plantations growing in Xuzhou City,by employing some indices such as collectivity variance ration,association coefficient value and percentage co-occurrence value and χ2-test.

Soil respiration rate (SRR) of Platycladus Orientalis plantation as well as soil temperature and volumetric soil moisture were measured by an automatic, open chamber technique using infrared gas analysis in the hilly region of North-China during 2006, the soil temperature and moisture were measured by an automatic monitoring system.

In order to provide scientific basis on the other studies and management about it, we studied the nutrient cycling of Fokienia hodginsii plantation in 1997.

Seed rain and seed banks of Cupressus funebris forest in the Three Gorges region;

A Study on the Species Diversity of Cupressus funebris forest in Yunyang and the Strategies of Forest Management;

Based on the artificial Cupressus funebris forest in the Three-gorge region, a quantitative study on the redistribution of rainfall and nutrient cycling in rain season (July) were conducted.