【作者】 陈刚； 邓文胜； 王丽亚；

【Author】 CHEN Gang~1,DENG Wensheng~1,WANG Liya~2 (1.School of Resources and Environment,Hubei University,Wuhan 430062;2.College of Horticulture and Forestry,Huazhong university,Wuhan 430070)

【机构】 湖北大学资源环境学院； 华中农业大学园艺林学学院；

【摘要】 本文以武汉市东湖和沙湖为例,以多时相TM影像为数据源,利用ERDAS软件提取东湖和沙湖1991年、2001年和2006年的水域面积信息,从时空两方面对湖泊水域面积的演化特征进行了系统地分析。结果表明,从1991年到2006年这十五年间,湖泊水域面积出现急剧下降,减少了1040.43公顷。分析认为,随着城市经济的发展,对土地的需求会更为迫切,城市湖泊的保护也将面临巨大挑战。遥感技术具有宏观性、动态性与实时性的优势,能够快速、准确地获取大范围地区水域面积变化信息,定量地分析城市湖泊演化规律,为城市湖泊的合理开发、利用和保护提供重要的依据。更多还原

【Abstract】 In this paper,the multi-temporal TM images as date source are used for extracting the water area information of Donghu and Shahu in the year of 1991,2001 and 2006 by ERDAS Software.It analyses systernaticly the area evolution characteristics of two lakes from both time and space.The results show that the areas of two lakes decreased by 1040.43Hectare from 1991 to 2006.The analysis indicates that along with urban economic development,the demand for land will be more urgent,the urban lakes protection will also face huge challenge.The RS technique which has the macroscopic,dynamic and timely superiority,is able to quickly and accurately obtain the large-scale changes of water area information,and quantitativly analyse the law of urban lake evolution,provide the important basis for the urban lakes reasonable development,use and protection.更多还原