Spatio-temporal characteristics of the mainland coastline utilization degree over the last 70 years in China

摘要: Based on topographic maps and remote sensing imageries measured or captured at time instants varied from 1940s to 2012, mainland coastline in 1940s, 1960s, 1990, 2000, 2010 2012 China were delineated classified into eight types according the differences anthropogenic utilization. And index of utilization degree (ICUD) was defined calculated for national, provincial local scales respectively. It turned out that, 1) over last 70 years, especially during two decades China, ICUD increased continuously dramatically, which shows that impacts human beings incessantly. 2) Significant spatial patterns temporal variations could be observed, specific, Yangtze River delta had much higher early stages; however Pearl Circum Bohai Bay more dramatically than decades. 3) At national scales, intensive accelerated exploitation coastline, following continual decrease natural years determined trends ICUD. However, spatio-temporal exhibited complicated characteristics scale because both activities physical factors significant changes. 4) Overall, effectively revealed changes China. will helpful China's ICZM decision makings monitor analyze its dynamics by (C) 2014 Elsevier Ltd. All rights reserved.