In this paper ,the Yancheng coastal zone and the counties and cities dispersed along the zone are selected as a target area for the case study .The research is based on the TM image of 1984 ,1990 ,1996 ,2002 ,2006 ,2014 , with statistical data ,topography map ,situ data as the main research data ,using GIS and RS technology to analyze the temporal and spatial character of LUCC and change of ecological function about the Yancheng coastal zone during the period of past thirty years .The LUCC in the Yancheng coastal zone and different zones has changed significantly during the period from 1984 to 2014 .From the angle of land use types ,the ratio of natural land types (spartina ,suaeda salsa ) is reducing continually ,w hile in the same period the ratio of artificial land types (farmland ,constructed lands) is increasing steadily .In the year of 2014 ,the ratio of artificial land types accounts for 79% ,which reflects the influence of human activities on the quantity and quality of land-use in this region . Because the ratio of forest and aquaculture land with high ecosystem service value is added dramatically ,the ecosystem service value of land use in Yancheng coastal zone is increasing continually in the study period;the ecosystem service value of artificial land surpasses natural land except the year of 1984 .%以盐城海岸带及各县市为研究对象 ,全面研究了该区域在过去30年(1984—2014年)的土地利用与覆被变化(LUCC)的时空特征和生态功能的变化.结果表明 :研究区的土地利用与覆被变化的时空特征发生了较大的变化 ,从地物类型看 ,盐城海岸带土地利用总的趋势是以盐蒿、芦苇等为主的自然地物的比例不断下降 ,而以居民工矿用地和农田为主体的人工地物的比例持续上升 ,到了2014年人工地物占比高达79% ,反映了人类活动对盐城海岸带土地利用的数量和结构的影响.在土地利用生态服务价值研究中 ,盐城海岸带及各县市的土地利用生态服务价值总体呈现逐渐增加的态势 ,主要是由于在研究时段内 ,土地利用单位面积生态服务价值系数较大的林地和水产养殖等用地有了大面积的增加.除了1984年 ,其余研究年份的人工地物的生态服务价值均超过自然地物的生态服务价值.
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