Analysis of characters of COD self-purification and its cause in Jinjiang Estuary;

Studies on regulations works for flood discharge in estuary of the Pearl River;

Studies on water resources allocation plan for estuary of Qiantang River;

Environmental geochemistry of heavy metals in bottom sediments of the river mouths in Liaodong Bay;

Investigation on sediment quality of the river mouths around Bohai Bay;

Bed topographies and flow characteristics at the river mouth in the Shokotsu river;

Analysis of the Source of Acid Deposition in Hekou Area-China-Vietnam Boundary and Its Developing Tendency;

Introduction of Papaya Improved Variety in Hekou;

The cause on yield of rubber tree on the low side and the countermeasure in Hekou;