%0 Journal Article
%T Research on Dynamic Changes of Coastline in Shenzhen City based on Landsat Image<br>深圳市1978年至2005年海岸线的动态演变分析
%A LI You
%A WANG Yanglin
%A PENG Jian
%A WU Jiansheng
%A LV Xiaofang
%A <br>李猷
%A 王仰麟
%A 彭建
%A 吴健生
%A 吕晓芳
%J 资源科学
%D 2009
%I 
%X Coastal zone has become a hot spot of research in recent years and research on dynamic changes of coastline has played an increasingly important role in it. This paper takes the rapid urbanization area of Shenzhen city as the study area, since Shenzhen has become one of the most important cities in china after the reform and opening-up. Its coastline has greatly changed because of large amount of constructions in the coastal zone. With the aid of technologies, including remote sensing and geographic information system(GIS) software such as ERDAS8.7 and ArcGIS9.2, we depict the coastlines of Shenzhen by using five Landsat MSS/TM/ETM+ images of the year of 1978, 1986, 1995, 1999 and 2005 with the method which combines threshold and NDVI index. In addition, we also systematically analyze the characteristics of coastline changes during the study period and conduct initial discussions on its driving factors. The results show that: during the study period, based on the method combining threshold and NDVI index, the average accuracy of depicting each kind of coastline is above 70%, which is acceptable in this research. In addition, the length of coastline increases from 1978 to 1995 at first and reduces since 1995, and the extent of changes on the west coast is much more significant than that on the east coast. Meanwhile, as the main driving factor, human activities, including beach reclamation and land reclamation, have greatly aggravated the changes of coastline, and the intensity of human activities on the west coast is also much more noticeable than that on the east coast. Besides human activities, geomorphologic environment also has considerable impact on the changes of coastline. Geomorphologic environment is composed of factors such as altitude, slope and lithology. Through affecting the intensity and means of human activities, geomorphology environment also affects the changes of coastline. Thus the driving factors of changes of coastline are constituted of human activities and geomorphology environment. In the end, we discuss the expectation of relative research in the future. It is necessary to focus on the condition of water kinetics. As the changes of the coastline, the shape of the landform also changes, which may result in the deposition of mud and sand in the bayou and influences the normal ship transport. In addition, the change of coastal shapes may also intensify the harmful pollutions.
%K Coastline
%K Dynamic change
%K Remote sensing
%K GIS
%K Human activity
%K Geomorphologic environment
%K Shenzhen city<br>海岸线
%K 动态演化
%K 遥感
%K GIS
%K 人类活动
%K 地貌环境
%K 深圳市
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=B5EDD921F3D863E289B22F36E70174A7007B5F5E43D63598017D41BB67247657&cid=B47B31F6349F979B&jid=9DEEAF23637E6E9539AD99BE6ABAB2B3&aid=74035E333567E85155E44F0059C0064D&yid=DE12191FBD62783C&vid=4AD960B5AD2D111A&iid=94C357A881DFC066&sid=4AA5FA7F666BDD0A&eid=899CC9158FC43EF4&journal_id=1007-7588&journal_name=资源科学&referenced_num=1&reference_num=0