The species composition and diversity of mollusca in the middle reaches of Xiang River;

The results of a survey on freshwater snails in the middle reaches of Xiang River were reported.

Evolvement of landscape pattern in upper and middle reaches of Xiangjiang River;

Study on the Tourism Development of the Central Hunan Tourist Region;

The historical datum and nowadays' records have manifested clearly that the frequency and situation of drought corresponded basically to the catastrophic flood in the middle reaches of Yangtze River,where is the area that the flood took place frequently,also the area that the drought took place frequently.

The wetland in the middle reaches of Yangtze River has been greatly damaged for excess exploitation and unreasonable utilization.

Aiming at the severe condition of flood control that was caused by the phenomena of little discharge volume but higher water level in the middle reaches of Yangtze River, the dissertation analyzes the effect of the change between Jingjiang River and Dongting Lake relations, finds a main reason that caused this adverse state, and finally puts forward a solution.

Introduction to the high danger of flood disaster in the middle Yangtze River;

Research summary of regional economy in middle Yangtze River at modern times since the 1980’s;

Study on Sustainable Utilization of Wetland Resources in Middle Yangtze River Farmland;