Under the influence of global change, many extraordinary changes in the geographic environmental elements in the Qingdao coastal area have occurred in the last 50 years. Compared with those in the 1950s, the annual mean air temperature during 1991 to 2002 has increased by 0.94, the monthly mean air temperature in the coldest month（January） has increased by 21.8, and the number of days with average air temperature of 10 or above in a year has increased from 207.6 days to 218.5 days. The annual mean sea sufrace temperature in the Qingdao offshore area in the 1960s was 13.45, and that during 1991 to 2002 was 14.20, so the annual mean sea surface temperature has increased by 0.75. The sandy beaches in the Qingdao coastal area have been seriously eroded since 1990s, for example, the shoreline of the Lingshan Bay southwest of Qingdao has been eroded at an annual mean retreating rate of 7m since 1990s, and the area of the Jiaozhou Bay has decreased from 559km2 in 1952 to 382km2 in 2002. Most of lagoonal wetlands in the Qingdao coastal area have disappeared due to the construction of artificial sturcutres along the coast. Because of the rise in the air and sea surface temperatures in the coastal area, the biotic community in the study area has changed gradually, for example, the tea trees have been transplanted in the Qingdao coastal area to form an important industry, some birds（such as Cygnus） used to overwinter in the Changjiang River delta area and have overwintered in the Shandong Peninsula area, and some marine animals to prefer to live in warm sea waters have been found frequently in the Qingdao sea area in recent years.
