黄河三角洲滨海湿地土地覆被和景观格局的变化

根据1986、1996和2001年土地覆被数据，运用ARC／INFO软件和景观生态学方法，研究了渤海海岸线缓冲带的土地利用和景观格局变化，分析了渤海的影响程度与范围。结果表明，在空间上，1986和2001年各缓冲带土地利用程度综合指数随着距海岸线距离的增大而升高，两者呈直线关系。在1996年，随着缓冲距离的增大，土地利用程度综合指数未有明显的空间分异；在时间上，各缓冲带土地利用程度综合指数逐年增加。渤海对近代黄河三角洲土地利用的影响范围超过3km。除了优势度外，所研究的其他景观格局指标与距海岸线的距离没有显著关系。

Land cover and landscape pattern changes of costal wetland in Yellow River Delta

Regional land use and land cover change is an important part of global change.Based on the land cover data in 1986,1996 and 2001,and employing ARC/INFO software and landscape ecology method,this paper studied the past 15 years' land use and landscape pattern changes (LULPC) in coastline buffer zone (3 km) of Bohai Sea,with the affect degree and scope analyzed.The results showed that spatially,the land use degree comprehensive index (Y) of Bohai Sea coastline buffer zone in 1986 and 2001 increased with the distance to Bohai Sea coastline (X),with the linear correlation equations Y_(86)=7.728X+96.584,R=0.979~(**),and Y_(01)=19.156X+112.2,R=0.983~(**).While in 1996,the index did not change dramatically.Temporally,the index increased from 1986 to 1996,as well as from 1996 to 2001.Other landscape pattern indexes except dominance index had no significant correlation with the distance to the Bohai coastline.