Saline water intrusion and its influence in the Laizhou area

ImODUcrIONSalinewaterintrusionwasfoundinIsraelqacobsetal.,l96O),Thailand(Sun,l989),Spain(Custodi0,l985)andtheFujiarea,Japan"'InChina,thelargescaleseawaterintru-sioninthelasttwentyyearshasgtaduallyforrneserious,totheextentthattheintrusionareanachedto4OO~5OOkm2inthecoastalareaofShandongProvince(Zha0,l99l,Xueetal.,l992,Qiu,l991).Thereareaisos0mesmallaff~areasinLia0dongPenin-sulaandthesouthcoastareaofChina,lbrexamPle,SubeiPlain(Zhouetal.,l988),GuangxiOi,l988;Chenetal.,l99O)andHainan-…     

莱州湾沿岸平原海水入侵灾害的发展进程

莱州湾东、南沿岸平原的海（咸）水入侵是人为过量采取地下水和自然环境变化共同引发的灾害。根据多年观测数据绘制的地下水位负值区、淡水资源超采量和海（咸）水入侵面积等三标志划分灾害进程为初始阶段、发展阶段、恶化阶段和缓解阶段。给出了灾害发展模式。以此解释新区灾害,针对灾害发展的不同阶段,采取适时而有效的防灾减灾对策和措施。