作　　者： ; ;

机构地区： 海南师范大学生命科学学院

出　　处： 《湿地科学与管理》 2009年第2期56-57,共2页

摘　　要： 以TM遥感卫星影像为数据源,借助GIS和RS技术获得海南东寨港红树林3个时期红树林分布图;进一步运用景观指数定量分析红树林在不同时期的变化特征。结果表明,近20年来,东寨港红树林各景观指数均有明显变化。其中,表征面积变化特征的景观相似性指数(LSI)和平均斑块面积(APA)有明显的下降趋势;而表征破碎化程度的单位周长斑块数(NPUP)和边界密度(PERD)呈上升趋势;形状指标(SI)也有下降趋势。说明东寨港的红树林在过去的20年,经历了衰减和破碎化过程;从不同角度,进一步分析了变化产生的主要驱动因子。 GIS and RS were used to analyze the distribution maps of mangrove forests in Dongzhai Harbor of Hainan in 3 different periods based on TM remote sensing satellite images. Further quantitative analysis using landscape indices was conducted to characterize the changes of mangrove forests among different periods. Results revealed that the landscape indices were significantly changed during recent 20 years, LSI （Landscape similarity index） and APA （Average plot area） describing changes of areas tended to decline sharply, NPUP （Number of plots for unit perimeter） and PERD （Perimeter density） indicating degree of fragmentation tended to increase, and SI （Shape index） appeared to decline. The results indicated that mangrove forest in Dongzhai Harbor suffered from reduction and fragmentation in the past 20 years. The underlying causes for such changes were analyzed from various viewpoints.

关 键 词： 景观变化 驱动因子 东寨港

领　　域： [天文地球] [天文地球] [生物学] [生物学]