Relation Between Control in Loess Plateau and No-flow in the Yellow Rever;

Watery changes of each year and each month induce some no-flow characters.

There was conspicuous contradiction appeal between water supply and demand in the Yellow River basin in 1997 because of much less precipitation and runoff than nounal and no-flow in the lower reaches in 1997 was the most serious in the records.

The research on the remote sensing composite information of the Huanghe River zero flow aftereffect feedback to its estuary spatial field;

The Yellow River zero flow has significant negative influence on the river delta offshore petroleum and gas exploitation environment,but the negative effect on the national economy sustainable development in the river valley is more severe.

This Paper introduces the present development and utilization lf local water reslurces and analyses the impact of zero flow of the Yellow River on industrial and agricultural production,ecological environment and silting on the lower Yellow River.

Based on the man made geological process of geosciences, this paper discusses the serious consequences and perniciousness of the cutoff in the lower reaches of the Yellow River.

By using meteorological data in the area of the first meander of the Yellow River and data of both annual runoff in the upper reaches and the cutoff in the lower reaches,climate changes in the meander area and their effects on annual runoff in the upper reaches and the cutoff in the lower reaches were analyzed.

Aimed at the status of dry river came frequently in lower reaches of the Yellow River,we analysed the forming causes of dry river and their effects on economy,people s life,floodprevention,and environment of lower reaches and river mouth area,the corresponding measuresand suggestions are proposed here.

Aiming at the fact of more and more dry river in the Yellow River in recent years, it is reallied that there aretwo main reasons for intensifying foe contradiction belween water supply and demand: severe increase in waler demand and decrease of water source.

The data shown that the earlist dry river of Fenhe river was in 1958 with the most serious dry reach at Yitang hydrological station in foe middle, but without dry river in whole reaches.

Meteorological Factors Influence on the Cut Off in The Lower Yellow River;

This paper analyses the reasons of the cutout and pollution of Huanghe River through its present condition,and raised appropriate solutions to the problems according to the forcasting of water requirement quantity in the next 30～40 years of Huanghe basin and the distribution situation of water resources in our country.