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桂林会仙岩溶湿地近40年演变的遥感监测 预览 被引量:23

Remote Sensing Supervision on Spatio-temporal Evolution of Karst Wetland in Recent 40 years in Huixian District of Guilin,China
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摘要 选择1969年、1997年和2006年3个时相多平台高分辨率时序系列遥感图像资料,采用遥感反演分析方法,对广西会仙岩溶湿地的形成演化进行分析研究,提出数字贴膜合成技术,对早期灰度图像资料湿地土壤湿度信息的提取效果良好。分析结果表明:会仙湿地是以岩溶沼泽、湖泊为主的综合型湿地,近40年来自然湿地面积从42km^2减小到目前约15km^2,表明湿地生态结构逐步从自然湿地向人工湿地转化。GIS空间分析表明:湿地退化是人类经济活动破坏湿地地表水文结构、过度开发湿地土地资源的直接结果,提出了会仙岩溶湿地的保护和生态系统修复的建议。 Abstract:A series of remote sensing data with high space resolution,acquired in 1969,1997 and 2006, were used to extract the information on wetlands in Huixian district (Guilin,China) with the remote sensing retrieval. GIS technique was also used to analyze the Spatio-temporal Evolution of the wetlands from 1969 to 2006 based on the statistics of different wetlands by remote sensing classification. The tech- nique of digital "coating" composite image was first proposed,which shows a good effect on extracting the soil moisture information of wetlands from the early gray-image. The result indicates that the area of natural Karst wetland in Huixian, which is a composite wetland mainly consisting of Karst lakes and marshes,shrunk rapidly from 42 km2 in 1969 to 15 kmz in 2006, and the ecological structure changed gradually from natural wetland to artificial wetland. The Spatial Analysis of GIS shows that,the direct cause of degradation of the Karst wetland in Huixian district is the human economic activities which de- stroy the eco-hydrological structure and cause the over-exploitation of land resources. Suggestions on protection and Ecosystem Recovery for this wetland are put forward.
作者 蔡德所 马祖陆 赵湘桂 王魁 CAI De-suo,MA Zu-lu,ZHAO Xiang-gui,WANG Kui(1. College of Civil and Hydroelectric Engineering,China Three Gorges University,Yichang 443002,China; 2. College of Civil Engineering and Architecture,Guangxi University,Nanning 530004,China; 3. Institute of Karst Geology,Chinese Academy of Geological Sciences ,Guilin 541004,China ; 4. Graduate School ,China University of Geoseienees ,Beijing 100083 ,China)
出处 《广西师范大学学报:自然科学版》 CAS 北大核心 2009年第2期 111-117,共7页 Journal of Guangxi Normal University(Natural Science Edition)
基金 国家科技支撑计划项目(2006BAC01A10) 国家水利部现代水利科技创新项目(xds2006-01) 广西科技厅攻关项目(0632006-3A)
关键词 桂林会仙 岩溶湿地 生态遥感监测 湿地演化 Huixian in Guilin,China Karst wetland remote sensing supervision of eco-environment evolution of wetland
作者简介 通讯联系人:蔡德所(1952-),男,湖北武汉人,三峡大学、广西大学教授,博导。E—mail:caidesuo@vip.163.com
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