| 东海区大陆海岸带景观格局变化及生态风险评价 |
| |
| 引用本文： | 田鹏,龚虹波,叶梦姚,史小丽,王丽佳,刘瑞清,童晨.东海区大陆海岸带景观格局变化及生态风险评价[J].海洋通报,2018(6):695-706. |
| |
| 作者姓名： | 田鹏 龚虹波 叶梦姚 史小丽 王丽佳 刘瑞清 童晨 |
| |
| 作者单位： | 宁波大学 地理与空间信息技术系，浙江 宁波 315211,宁波大学 公共管理系，浙江 宁波 315211,宁波大学 地理与空间信息技术系，浙江 宁波 315211,宁波大学 学报编辑部，浙江 宁波 315211,宁波大学 地理与空间信息技术系，浙江 宁波 315211,宁波大学 地理与空间信息技术系，浙江 宁波 315211,宁波大学 地理与空间信息技术系，浙江 宁波 315211 |
| |
| 基金项目： | 国家社科基金重大项目 （16ZDA050） |
| |
| 摘 要： | 基于1990-2015年东海区海岸带6期遥感影像数据,分析了景观格局的动态变化,构建景观生态风险指数,对不同时期研究区的生态风险进行了评价。结果表明:(1)东海区海岸带景观以林地和耕地为主导,耕地面积急剧下降,而建设用地面积增长迅速,增长率为155.55%;(2)研究区生态风险程度加深。1990-2010年中生态风险区占主导地位,2015年较高生态风险区上升为主导地位,占整个生态风险区面积的33.39%,至研究期末高生态风险区面积增加了6 267.83 km2。空间上,生态风险高等级区呈现出向沿海地区扩展的趋势,沿海港口城市面临较严重的生态风险。省域和县级市尺度下的景观生态风险时空差异也较大;(3)生态风险等级转换差异较大。生态风险转移主要是由低向高等级转换,且其生态风险等级年均转换速率呈上升趋势,由低到高等级方向转移是由高到低等级方向转移面积的12.01倍。
|
| 关 键 词： | 景观格局 生态风险 海岸带 东海区 |
| 收稿时间： | 2018/6/9 0:00:00 |
| 修稿时间： | 2018/10/18 0:00:00 |
Landscape pattern change and ecological risk assessment of the continental coast of the East China Sea |
| |
| TIAN Peng,GONG Hong-bo,YE Meng-yao,SHI Xiao-li,WANG Li-ji,LIU Rui-qing and TONG Chen.Landscape pattern change and ecological risk assessment of the continental coast of the East China Sea[J].Marine Science Bulletin,2018(6):695-706. |
| |
| Authors: | TIAN Peng GONG Hong-bo YE Meng-yao SHI Xiao-li WANG Li-ji LIU Rui-qing and TONG Chen |
| |
| Institution: | Department of Geography & Spatial Information Technology, Ningbo University, Ningbo 315211, China,Department of Public Administration, Ningbo University, Ningbo 315211, China,Department of Geography & Spatial Information Technology, Ningbo University, Ningbo 315211, China,Editorial Department of Journal of Ningbo University, Ningbo 315211, China,Department of Geography & Spatial Information Technology, Ningbo University, Ningbo 315211, China,Department of Geography & Spatial Information Technology, Ningbo University, Ningbo 315211, China and Department of Geography & Spatial Information Technology, Ningbo University, Ningbo 315211, China |
| |
| Abstract: | Based on the remote sensing image from 6 datasets over coastal zone of the East China Sea from 1990 to 2015, the dynamic changes of the landscape pattern were analyzed, and the landscape ecological risk index was established to evaluate the ecological risk of the study area in different periods. The results showed that: (1) The coastal landscape in the East China Sea was dominated by woodland and cultivated land, the cultivated land area decreased sharply, while the construction land area increased rapidly, with the growth rate of 155.55 %. (2) The degree of ecological risk in the study area deepened. From 1990 to 2010, the moderate ecological risk areas dominated, and the high ecological risk areas rose to the dominant position in 2015, accounting for 33.39 % of the total ecological risk areas. The area of the extremely high ecological risk areas increased by 6 267.83 km2 at the end of the study period. In space, ecological risks showed a trend of expansion to coastal areas, and coastal port cities faced more serious ecological risks. The spatial and temporal differences in landscape ecological risks at the provincial and county-level cities were also large. (3) The transformation of ecological risk level was quite different. The transfer of ecological risk level was mainly from low to high, and the annual average rate of ecological risk grade was on the rise. The transfer area from low to high level was 12.01 times of that from high to low level. |
| |
| Keywords: | landscape pattern ecological risk coastal zone East China Sea |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《海洋通报》浏览原始摘要信息 |
| 点击此处可从《海洋通报》下载免费的PDF全文 |
|
