( 5 ) the maximum water level risen by the enclose tideland cultivation around the reservoir is 0 . 66m , the responding quality is 2000mvs , which heavily effect the environment around the reservoir . the reservoir " s water level is risen because cross section and flood canal become narrow , which caused by building dam , this makes groundwater unsmooth , drainage , even flow from a lower to a higher space and soil salinized 66m ,且為2000m ’兒的常年洪水,對(duì)庫(kù)區(qū)周邊環(huán)境的影響較大,因打壩筑堤縮小過(guò)水?dāng)嗝婧托泻橥ǖ涝斐伤畮?kù)水位進(jìn)一步抬升,致使庫(kù)區(qū)周邊灌區(qū)地下水排水不暢,乃至倒灌,型成士地鹽堿化。