The area of soil erosion and sediment discharges of rivers in the middle and upper reaches of the Yangtze River have been increasing.

This study found that: the province as a unit small and complete duplication of the layout and construction of the upper reaches of the Yangtze River is the outstanding problems of second industrial development of the four provinces.

The severest floods which broke out on the upper reaches of the Yangtze River in 1998 not only caused serious losses of life and property, but also it has brought serious damage to the natural environment.

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.

GIS based risk zoning and assessment of flood disaster in the middle and lower reaches of the Yangtze River Basin;

The vast expanse of the paddy field and drylands with crisscross footpaths between in the middle and lower reaches of the Yangtze River have constituted a unique ecological environment together with nearby lakes and ponds.

The paper conducts a preliminary research into the grain logistical cost in the middle and lower reaches of the Yangtze River within the frame of the world market in the 1920 s & 1930 s.

The middle and lower reaches of the Yangtze River is the major area for copper(gold) and iron resources of China, in which “integral whole of multiplaces” copper deposits make up a special type of large and superlarge deposits along the circum Pacific metallogenic belt.