摘要
利用历史资料和Landsat TM卫星遥感图像,采用目视判读与实地验证相结合的方法,研究了鸭绿江河口湿地1983年、1995年和2007年的格局变化,揭示了其结构演变。研究结果表明:1983年至2007年间,鸭绿江口湿地总面积有所增加,其中湿地结构发生较大变化,自然湿地面积以4.16km2/年速度显著减少,而人工湿地面积以23.43km2/年速度大幅增加;湿地主要的增加来源是水稻田和养殖场,主要下降湿地类型为滩涂和芦苇;人类工农业生产活动是鸭绿江河口自然湿地面积减少的主要原因,总体上导致湿地生物生存空间减少,湿地自身生态功能不断退化。
The pattern of the change of the Yalu-river estuary the method of visual interpretations combined and field tests, wetland were studied in 1983, 1995 and 2007 with using the historical data and Landsat TM satellite remote sensing images, and revealed its structure evolution. The results showed that the Yalu-river estuary wetland area increased between 1983 and 2007, and taken place large changes in wetland structure. Natural wetland area is significantly reduced of 4. 16 km2/ year speed, and artificial wetland area greatly increased of 23.43 km2/ year speed; the source of increasing wetland is rice paddies and farms, the source of reducing wet- land is tidal flats and reed. Human industrial and agricultural production activities is the main reason for the Yalu-river estuary nature wetland area reducing, lead to a decline in the wetland creatures living space, and eco- logical function degradation accordingly.
出处
《海洋湖沼通报》
CSCD
北大核心
2014年第4期160-167,共8页
Transactions of Oceanology and Limnology
基金
国家自然科学基金项目(No.41271028)资助
关键词
鸭绿江口
湿地
结构演变
遥感
Yalu-river estuary
wetland
structure change
remote sensing
