摘要
利用1997和2007年TM影像,结合GIS技术分析近10年来水利工程对鸭绿江河口三角洲的影响,同时,结合统计分析方法,应用马尔科夫模型预测了未来20年该区景观格局的演变趋势。结果表明:流域水利工程的建设使河口区来沙量减少,导致三角洲侵蚀加剧;大面积围垦使鸭绿江口西水道的纳潮量大幅减少,淤积严重;未来鸭绿江河口三角洲的演化仍向侵蚀方向发展,在达到稳定状态后,水域面积将占整个研究区的44.9%,使景观基质发生改变。
Based on the TM images in 1997 and 2007,and by using GIS spatial analysis,this paper analyzed the impacts of water conservancy project on Yalu River delta in last ten years.In the meantime,with statistical methods and by using Markov Model,the evolvement of Yalu River delta in the next 20 years was predicted.The results showed that water conservancy project reduced the sediments transported to the River,and the delta eroded intensely.Due to extensive reclamation,the west channel of Yalu River was silted up severely.In the future,Yalu River delta would be eroded more seriously,and,when the erosion arrived at stable state,the waters area in the delta would take up 44.9% of the total,and the landscape matrix would be changed.
出处
《生态学杂志》
CAS
CSCD
北大核心
2011年第8期1799-1804,共6页
Chinese Journal of Ecology
基金
国家林业公益性行业科研专项(200804001)资助
