【摘要】 近年来,胶州湾五河口区域互花米草群落扩展迅速。为分析互花米草群落的扩展趋势,利用2009年以来5个年度卫星历史影像,勾绘互花米草群落图斑并统计其扩展面积,分析其扩展趋势以及对生态环境的影响。结果表明:(1) GoogleEarth软件具有强大的历史影像数据库,可以快速查询1984年以来互花米草的历史影像资料,根据勾绘图斑计算面积,分析图斑消长变化;(2) 8年间,胶州湾五河口区域互花米草从无到有,群落面积现已扩展到215 hm~2;(3)预测在没有人为干预的情况下,2020年互花米草群落面积可扩展到500 hm~2;(4)以机械收割作为饲料或在萌芽期摘芽作为蔬菜等利用方式可以控制互花米草群落蔓延。更多还原

【Abstract】 In recent years, the Spartina alterniflora community in Wuhekou area of Jiaozhou Bay has expanded rapidly. In order to analyze the expansion trend of S. alterniflora community, we used five historical annual satellite images since 2009 to measure and map the distribution areas of S. alterniflora community, and then analyze both the spreading trend and the impact on ecological environment. Results indicated that: 1) Google Earth has a powerful historical image database, which can be used to quickly search historical satellite images back to 1984. The software can also calculate the selected areas and analyze any changes of the selected areas in different images. 2) In the past 8 years after the initial introduction of S. alterniflora to Wuhekou area of Jiaozhou Bay, the S. alterniflora community has now expanded to 215 hm2. 3) Without human intervention, the predicted area of S. alterniflora community could reach 500 hm2 in 2020; 4) Treatment methods such as mechanical removal of S. alterniflora, use as forage and collection buds of S. alterniflora as a source of food can be applied to control the spread of S. alterniflora.更多还原