摘要
依据1992、2002和2008年3期Land sat遥感影像数据的对比分析,结合野外取样调查,对盐城海岸带湿地土地覆盖变化及其生态效应进行分析研究。结果表明:在自然因素和人类活动共同干扰下,海岸带湿地土地覆盖发生了显著的变化,自然湿地大量减少,互花米草的入侵改变了盐沼植物群落的演替特征;互花米草入侵以及盐沼植物群落的演替使得海岸带湿地生产力发生显著变化;海岸带湿地土壤理化性质的变动与盐沼植物群落的演替和分布格局的变化表现出很好的相关性;土地覆盖变化改变了盐沼梯度生境,对温室气体、氯代烷烃及还原性硫气体等生源气体的排放产生了重要影响。
Based on the comparative analysis of three phases Land sat remote sensing images data in 1992,2002 and 2008,and combined with field sampling investigation,the land-covered change of Yancheng coastal wetlands and its ecological effects were studied.The results shows that land-covered of coastal wetlands has occurred a significant change with the co-interference from the nature and human activities,such as the massively reduced of natural wetlands and the altered community succession of salt marsh plants resulting from the invasion of Spartina alterniflora.Spartina alterniflora invasion and the salt marsh plants change have dramatically varied the productivity of coastal wetlands.It shows a high correlation between the variation in physical-chemical properties of coastal wetlands soil and the changes of community succession and distribution patterns of salt marsh plants.Land-covered change has altered the gradient of salt marsh habitats,and has significantly influenced the emissions on greenhouse gases,chloroalkane,and reduced sulfur gas species.
出处
《海洋湖沼通报》
CSCD
北大核心
2011年第1期122-130,共9页
Transactions of Oceanology and Limnology
基金
国家林业科技支撑计划子专题项目(2006BAD903A1903)
江苏省高校自然科学研究计划一般项目(06KJB170112)
徐州师范大学基金理科培育项目(07PYL07)
关键词
海岸带湿地
土地覆盖变化
盐沼植物
生态效应
coastal wetlands
land covered change
salt marsh plant
ecological effect
