In regard to the problems of soil and water loss

environment pollution and the deteriorating self-purification ability of the water body in Three Gorge areas

constructing ecological barriers in the lakeside zone in accordance with regional development mode will provide ecological security and sustain socioeconomic development of the reservoir and the downstream areas.Taken the demonstration area in Panlong town

Yunyang County as an example

the paper discussed functional zoning

and construction target and principles for ecological barrier construction in the lakeside zone

based on field survey on natural conditions and socio economic situations.The preliminary technical system

including over twen-ty constructional modes of nine categories

was proposed.The benefits were analyzed and evaluated in order to provide referential concepts and measures for ecological barrier construction in the surrounding regions of the reservoir.