Contradiction of the urban area structure in Shanghai is acute, which can be expressed in the following aspects: 1) Its high agglomeration of population and industrial factories is scar-cely seen among the famous megalopolises in the world, and the "crises of space" are very grave.
In the light of regional physiographic characteristics and their effect on clay mineral composition of cohesive sediment (d<0.005mm), the cohesive sediments in the Changjiang River Estuary are found to come from different source regions, namely, the Changjiang River upstream of Jiangyin (CR,x1), the Abandoned Yellow River Delta and northwestern Yellow Sea (AYRDYS, x2), and the Hangzhou Bay and northwestern part of East China Sea (HBECS, x3).
Based on abundant historical documents and tree rings, we carried on the evolution of late Holocene environments in Central North China, and the precipitation and temperature se-ries for the last 2 200 vears have been reconstructed.
Changes of sedimentary environment of the system of sand-gravel outer bar and lagoon in Liaoning coastal zone illustrated that the rising of temperature in the postglacial period had caused that of sea level.
The Gaoyou Lake, location in the central part of Jiangsu Province, is the third largest one in this province. In the present paper the outhor puts forth a point of view on the origin of this lake for discussion.
Downward sedimentation and headward sedimentation are a pair of important concepts concerning the regulation of the river bed profile, Because of the inconsequent understanding of above two concepts existing in earlier papers, this paper gives new and strict definitions of them as well as their mathematical model.
The mixing process of salt water and fresh water in an estuary is in fluenced by many factors such as the estuarine geometry, tidal range and riverine flows etc. It changes with the spring-neap tide cycle and flood-dry season, therefore the mixing intensity in the form of fre-quency vector is used in this paper.
It is explained in this article that there exist evident dry island in summer and wet island in spring and winter in urban region, and in autumn both dry and wet islands can appear.
On the basis of the mathematical model was developed in part I, the governing equations were solved by the Galerkin-type finite element approach, together with the Douglas-Dapout Prediction-Correction method which have the advantage of less computer time than the itera-tive procedure for nonlinear problems.