近40a象山港潮汐汊道岸线的时空变化特征及其与人类活动的关系  

Temporal and spatial variations of shoreline in tidal inlet system of Xiangshan Harbor and its relation to human activities in the past 40 a

作　　者：袁麒翔[1] 李加林[1,2] 徐谅慧[1] 杨磊[1] 陈鹏程[1] 王明月[1] 卢雪珠 

机构地区：[1]宁波大学建筑工程与环境学院,浙江宁波315211 [2]宁波大学浙江省海洋文化与经济研究中心,浙江宁波315211

出　　处：《应用海洋学学报》2015年第2期279-290,共12页Journal of Applied Oceanography

基　　金：国家自然科学基金资助项目(41171073;41471004);国家自然科学青年基金资助项目(41401389);浙江省自然科学基金资助项目(Y5110321);浙江省哲学社会科学基金资助项目(12JDHY01Z);浙江省大学生科技创新活动暨新苗人才计划资助项目(2014R405091;2014R405076);宁波大学优秀学位论文培育基金资助项目(py2013019)

摘　　要：利用多时期遥感数据，以8 a 为时间步长，提取了1974∽2014年间各时期象山港潮汐汊道海岸线空间位置、长度以及曲折度信息，同时对人类活动强度进行定量化评价，并探讨了人类活动强度变化和岸线变化的关系。结果表明：（1）40 a 来，随着人类活动加剧，象山港潮汐汊道自然岸线长度不断缩减，人工岸线长度不断增加，并逐渐趋于稳定变化；（2）在不同方式人类活动影响下，象山港局部岸段形态发生剧烈变化，使得象山港潮汐汊道岸线曲折度不断变小；（3）人类活动强度在1974～1998年阶段增加快速，1998年以后增强速度有所变缓，同时，人类活动影响区域逐渐变大，几乎遍及整个港湾海岸；（4）人类活动强度与整体岸线的长度和曲折度呈现显著负相关性，随着人类活动强度的增大，岸线长度和曲折度逐渐减小。Used remote sensing data in multiple periods of 8 a intervals,tdal inlet shoreline’s information of spatial location,length and tortuosity of Xiangshan Harbor in period of 1974 to 2014 were extracted.At the same time,the human activity intensity is quantified and evaluated and the relations between the changes of human activities and the shoreline are discussed.The results shows that：（1）In the past 40 a,with increasing intensities of human ac-tivities,the length of shoreline in Xiangshan Harbor was shrinking,while the length of its artificial shoreline in-creased and stabilized;（2）Under the influence of different human activities,part of shore morphologies in Xiangs-han Harbor have experienced dramatically changes,which decreased the shoreline sinuosity;（3）The intensity of human activity increased rapidly from 1974 to 1998,the rate of increase had slowed down after 1998,at the same time,concentrated area of human activities gradually intensified and covered almost entire shoreline;（4）The in-tensity of human activity decreased with the length and sinuosity of the overall shoreline,which showed a significant negative correlation due to intensified human activities.

关 键 词：海洋遥感学 岸线 长度 曲折度 人类活动 强度 潮汐汊道 象山港 

分 类 号：P748[天文地球—海洋科学]