摘要
在解译1988、1998及2009年3期遥感影像基础上,运用叠加分析和基于斑块的红树林空间演变机理分析方法,分析了1988—2009年间东寨港红树林湿地景观格局变化及其驱动力差异.结果表明:1988、1998及2009年,研究区红树林总面积分别为1809.4、1738.7和1608.2 hm2,整体呈递减趋势,且破碎化程度加剧.景观类型主要表现为红树林、农用地、有林地等向建设用地、养殖塘用地转化.分别利用累计计数、按百分比计数、按主要途径计数3种方法的统计结果显示,导致东寨港红树林斑块数量变化的驱动力主要为自然因素,作用力百分比分别为58.6%、72.2%、72.1%,而导致斑块面积变化的驱动力主要为人为因素,作用力百分比相应为70.4%、70.3%、76.4%.
According to the interpreted results of three satellite images of Dongzhai Harbour obtained in 1988,1998 and 2009,the changes of landscape pattern and the differences of its driving forces of mangrove forest in Dongzhai Harbour were analyzed with a patch-based method on spatial distribution dynamics. The results showed that the areas of mangrove forest in 1988,1998 and 2009 were 1809. 4,1738. 7 and 1608. 2 hm2 respectively,which presented a trend of decrease with enhanced degree of landscape fragmentation. The transformations among different landscape types indicated that the mangrove,agricultural land and forest land were mainly changed into built-up land and aquaculture pond. The statistical results obtained from three different methods,i. e.,accumulative counting,percentage counting and main transformation route counting,showed that natural factors were the main reason for the changes of patch number,responsible for 58. 6%,72. 2% and72. 1% of patch number change,respectively,while the percentages of patch area change induced by human activities were 70. 4%,70. 3% and 76. 4%,respectively,indicating that human activities were the primary factors of the change of patch areas.
出处
《应用生态学报》
CAS
CSCD
北大核心
2015年第5期1510-1518,共9页
Chinese Journal of Applied Ecology
基金
科技部全球变化研究国家重大科学研究计划项目(2010CB951203)
国家自然科学基金项目(41201525
31260131)资助
关键词
东寨港
红树林
景观变化
斑块分析
Dongzhai Harbor
mangrove
landscape change
patch-based analysis
