1. Historical Prediction of Disastrous Flood in 1991 In Taihu Basin overprecipitation in the Spring of 1991 was followed by frequent rain-storms from middle June to early July.
The results of the study show that the characteristics of soil situated at low altitude in weathering and leaching, enrichment of Fe2O3 and its morphological transformation and clay mineral types are extremely similar to the soil located at high altitude in Emei Mountain, Tianmu Mountain and Fengyang Mountain.
It is reasonable that the authors believe that the belt area along the Yellow River will be-come another key axis of territory development paralleling to that of Yangtze River, which links the east, west and middle areas of the nation together.
Based on the relevant data of releveling from 50's to 80's in the century, the crustal vertical movement in the Changjiang River Delta and its adescent area is analysed and compared with the sea level changes along the coast of this area with respect to the same isostatic datum.
The selenium differentiation in mountain meadow soil, mountain brown soil, mountain leached drab soil and cultivated fluviogenic soil in warm-temperated geographic landscape has been studied according to vertical natural zonality.
This paper has described meandering alluvial rivers with mean annual suspended sedi-ment concentration of more than 100kg/m3 on the Loess Plateau, China, and explained their formation cause by the effect of hyperconcentrated water flow.
The hydrologic catchment model with certainty can be used to quantify the hydrologic utility of a large area of forests in a short time by using the extant historic records of the hydrometric network's observations. It is an encouroging new approach for further develop-ment of the utility of forest hydrology.
In East Asia during the Pleistocene there happened many loess shower events, in which a lot of loess ash into the ancient lake, then formed a special sediment in the lacustrine pro-file, this sediment is called underwater loess.
The author collected fogwater samples in the industrial district of anning and the non-industrial district of Xishuangbanna in the winter of 1988 in Yunnan.
A two-dimensional model was developed to analyze the seedbed soil moisture and temper-ature regimes affected by various kinds of mulch under different soil and climate conditions.In this model, the porous mulch was treated as the porous materials samilar to the soil.
In view of the dynamic nature of urban-rural relationship, the feature of rural environ-ment being open and the tendency of rural economic development, the paper proposes a revised definition of rural geography, i.e. rural geography is concerned with the law of the areal dif-ferentiation of rural social and economic activities and the law of urban-rural interaction.
