【作者】 曾群； 喻光明； 杨珊； 赵帆； 罗秋月； 林冬梅；

【Author】 Zeng Qun~(1,2) Yu Guang-Ming~1 Yang Shan~1 Zhao Fan~1 Lin Dong-Mei~1 1 College of Urban and Environmental Sciences,Central China Normal University,Wuhan 430079; 2 State Key Laboratory oflnfoumation Engineering in Surveying,Mapping and Remote Sensing,Wuhan University,Wuhan 430079; 3 Editorial Department of Journal,Huazhong Normal University;Wuhan 430079

【机构】 华中师范大学 城市与环境科学学院； 武汉大学 测绘遥感信息工程国家重点实验室； 华中师范大学 学报编辑部；

【摘要】 本文结合TM影像与常规图件及统计数据,在ERDAS与ARC/INFO平台支持下研究了汉江流域中下游(湖北省境内)的生态安全状态及其变化。结果表明,1995年与2000年研究区的生态安全度分别为0.685与0.699,均为Ⅲ级,即处于一般安全状态,生态安全总体上没有发生明显的变化;在这2个时点上,研究区内各县市的生态安全度均处于Ⅱ级与Ⅲ级之间,即,处于较差状态与一般状态;1995年全区19个县市中,生态安全度较差(Ⅱ级)的有5个县市,一般(Ⅲ级)的有14个县市;2000年处于较差状态(Ⅱ级)的减少为4个县市。研究结果反映了研究区内生态安全的形势很严峻。更多还原

【Abstract】 Combing the TM images with conventional maps and statistical data,states of ecological security and their changes in the middle and lower reaches of Hanjiang River Basin (in Hubei Province) are investigated with the support of ERDAS and ARC/INFO platform.The results shown that,in 1995 and 2000,the degree of regional ecological security are 0.685 and 0.699 respectively in the study area.These values are in degreeⅢof ecological security,that is,the general safety state. No obvious changes of regional ecological security are taken placed as a whole.In all the counties of study area,the degrees of ecological security are in degrees betweenⅡandⅢ,meaning the relative poor and the general states.In 1995,there are 14 counties with degreeⅡ(the relative poor state) of ecological security in the study area,and 5 counties with degreeⅢ(the general state).In 2000,the amount of counties with degreeⅡis decreased to 4.The results reflect that the situation of ecological security is very grimness in the study area.更多还原