heterophylla in the watershed of Miyun Reservoir in Beijing as this research object,by the research of age structure, distributive pattern of typical shrubbery plants of Vitex negundo var.

Soil Erosion Control Mechanism and Modeling of Forest for Water Resource Conservation in Miyun Reservoir Watershed Area in Beijing;

Soil erosion in Miyun reservoir watershed and control countermeasures;

Studies on sustainable development and discussion on its countermeasures in Miyun Reservoir Watershed;

According to the eco economic theory, 53 specific indexes suitable for classification of eco economic systems of the Miyun reservoir watershed in Beijing were selected.

Economic benefit dynamics of carbon sequestration by forest trees in Miyun watershed.;

Study on Non-commercial Forest Compensation in Miyun Watershed;

Analysis on the phytoplankton and water quality in eastern and western Miyun Reservoir;

Chlorophyll-a Concentration Estimation with Field Spectra of Water in Miyun Reservoir;

Investigation on the Impact of Microbial Community on Off-Flavor of Raw Water in Miyun Reservoir;

,DeNitrification-DeCompositon),was adopted in the study to quantify SOC storage and dynamics in croplands of the Upperstream Watershed of Miyun Reservoir in North China.