基于Landsat遥感数据的长岛南部岛群景观格局演化研究

发布时间：2019-05-06 21:16

【摘要】：为了了解长岛南部岛群在经济发展背景下的景观格局及未来变化趋势,利用1990~2015年6景Landsat TM5、TM7和OLI8影像数据源,基于地理信息系统(GIS)平台采用决策树分类的方法对长岛南部岛群的景观类型进行了分类,并结合Frag-stats软件提取7种不同的景观格局指数,对长岛南部岛群的景观格局演化特征进行了系统分析。结果显示,人为活动是近年来长岛南部岛群景观格局演化的主要驱动力,该岛群景观类型变化以建设用地、水产养殖用地增加和林地减少为特征,建设用地斑块聚集度指数较高,斑块的聚集度指数逐年增加,整体上斑块的聚集度和连通性很好。不同景观指数(SHDI(景观斑块多样性)、PAFRAC(周长面积分维数)、PD(斑块密度指数)、LSI(斑块形状指数)、CA(斑块面积指数)、AI(景观聚集度指数)、COHESION(斑块结合度指数))对人为扰动因子均具有良好的表征。相关研究结论可为长岛南部岛群综合管理和生态红线划定提供有效依据。
[Abstract]:In order to understand the landscape pattern and future change trend of the southern island group of long Island under the background of economic development, 6 Landsat TM5,TM7 and OLI8 image data sources were used from 1990 to 2015. Based on (GIS) platform, decision tree classification method was used to classify the landscape types of the island group in the south of long Island, and seven different landscape pattern indexes were extracted by using Frag-stats software. The evolution characteristics of landscape pattern of the island group in the south of long Island are analyzed systematically. The results show that man-made activity is the main driving force of the landscape pattern evolution of the island group in the south of Changdao in recent years. The landscape type change of the island group is characterized by the increase of construction land, the increase of aquaculture land and the decrease of forest land. The patch aggregation index of construction land is higher and the patch aggregation index is increasing year by year. The aggregation degree and connectivity of patch are good on the whole. ), PAFRAC (perimeter area fractal dimension), PD (patch density index), LSI (patch shape index), CA (patch area index), AI (landscape aggregation index) with different landscape indices (SHDI (landscape diversity), PAFRAC (perimeter area fractal dimension), PD (patch density index), LSI (patch shape index), CA (patch area index), AI (landscape aggregation index. COHESION (patch binding index) is a good indicator of human disturbance factors. The relevant research conclusions can provide an effective basis for the integrated management and ecological red line delineation of the island group in the southern part of long Island.
【作者单位】：山东科技大学测绘科学与工程学院;中国科学院海洋研究所;
【基金】：青年科学基金项目(41306190) 海洋公益性行业科研专项经费项目((DOMEP(MEA)-01-05)—201505012-3)~~
【分类号】：P715.7;P901

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