基于3S技术的庄河市滨海湿地景观格局演变研究

庄河市位于黄海北部沿海地区,自然海岸线长达285km,拥有丰富的滨海湿地资源,对区域经济的发展具有显著的促进作用.以庄河市2000年和2010年的Landsat TM（或ETM）遥感影像获取研究区的滨海湿地斑块图形数据,选用生态意义较明确的景观特征指数,对庄河市滨海湿地的景观格局变化进行研究.研究结果表明,2000-2010年,庄河市滨海湿地总面积不断缩减,由2000年的131252.60hm2减少到2010年的121489.16hm2,减少幅度为7.44％;湿地斑块数不断增加,由2000年的3425块增加到2010年的3563块;湿地景观多样性指数（H）和景观形状指数（LSI）呈增加趋势,分别由2000年的0.6315和14.0分别增加到2010年的0.8554和18.7;景观优势度指数呈下降趋势,由2000年的0.8359下降到2010年的0.7364,表明庄河市滨海湿地的景观破碎化程度越来越严重.

Landscape Pattern Evolvement of the Coastal Wetland in Zhuanghe City Based on 3S Technologies

Zhuanghe City was located in the northern coast of the Yellow Sea, the natural coastline of 285km, having the rich coastal wetland resources, it played an important role in the regional eeonomie development. Two landsat TM（ETM） images obtained respectively on May 2000 and June 2010 were interpreted as the basic information sources using the more explicit landscape metrics, change of landseape pattern of coastal wetlands in Zhuanghe City was studied by calculation and analysis of the landscape indexes. The results showed that from 2000 to 2010, the area of the coastal wetland of the Zhuanghe City decreased by 7.44 %, NP increased from 3425 to 3563, H increased from 0. 6315 to 0. 8554, LSI increased from 14.0 to 18.7, D decreased from 0. 8359 to 0. 7364. Zhuanghe City coastal wetlands were rapidly deteriorating and experiencing the landscape fragmentation.