Through the investigation of phytocoenosium of degeneration grassland after closing off on Nenjiang sandy land,growth law and succession tendency of sandy land vegetation were studied after closing sandy land and forbidding herding.

The instantaneous wind speed of the sand mass was observed and recorded respectively in these areas of the 3 typical soils(sandy loam,sandy soil and aeolian sandy soil) in Nenjiang sandy land at the 4 kinds of circumstances above.

By investigations and comprehensive analyses of sample trees of poplar plantations at Duerbote Mongolian Autonomous county and Nehe county in Nenjiang sandy land,the aboveground productivities and optimum densities of several poplar species were established.

Study on the Stability of Plantation for Wind Protection and Sand Fixation in Nenjiang Sandy District;

Analysis of Climatic Factors on Desertification of Songnen Sandy Land and its Developmental Trend in the Future;

Study on Spatial-temporal Pattern of Songnen Sandy Land Use/Cover based on RS and GIS Technology;

Monitoring of Songnen sandy land in 2000 showed there were 1613.

Based on the Landsat TM5 and TM7 images, the land use/cover change was detected in the upstream area of the Nenjiang River between 1995～2000.

Creative and application of Nenjiang opal shale super fine study and application in ABS;

Wavelet-Based Analysis of Characteristics of Summer Rainfall in Nenjiang and Harbin;

Characteristics of Precipitation in Summer Seasons in Nenjiang and Haerbin over the Past 48 Years;