Landscape Pattern Changes in Coastal Area of Nantong City in Recent Twenty Years
Coastal areas have the characteristics of rich biodiversity,productivity and high ecological effect and potential economic value.Based on the TM images and ETM images of 1991,2000 and 2010,the changes of 6 landscape patterns including tidal salt marsh,silt beach,delta/sandbar,aquaculture farms,construction land and other land use types of coastal areas in Nantong city in the recent 20 years were analyzed.The result indicated that the terrestrial landscape areas increased notably,while ocean landscape,especially the inter-tidal salt marsh areas reduced,sea-land demarcation line moved continuously in the direction of ocean.The changes in the first 10 years(1991～2000) were small,while in the last 10 years (2001～2010) was significant.The landscape changes in coastal areas of Nantong were inseparable with the coastal development,it changed slowly in 1991-2000 and changed notably in 2001-2010.It was suggested that the design and implementation of coast development plan including development mode,scale,speed and strength should be cautious to avoid irreversible damages.
coastal arealandscape pattern changesremote sensingNantong city
NETL
NSTL
万方数据
维普
