APPLICATION OF ANALYTIC HIERARCHY PROCESS TO ASSESSING THE ECOLOGICAL VULNERABILITY OF WETLANDS IN T

来源 :Chinese Geographical Science | 被引量 : 0次 | 上传用户:lwm1976
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Wetlands in the Jianghan Plain are important components of wetland types in lake area in the middle and lower reaches the Changjiang (Yangtze) River and they fulfill many uses and functions related to hydrology, waste assimilation, ecosystem productivity and biodiversity. Owing to natural factors and human activities, especially excessive reclamation from lakes, the shrinking process of the lakes has been accelerated. Wetland ecosystem has shown the characteristics of vulnerability. According to the analysis of wetland ecological function in the Jianghan Plain, this paper presented an index system related to productivity, stability and environmental capacity. By using the method of Analytic Hierarchy Process, we computed the values of the relative weights of the indexes, and evaluated the vulnerability level of the wetland ecosystem by the method of multi-indexes. The case study showed that the fragile extent of wetland ecosystem in the Jianghan Plain is 5.6. This means that the wetland ecosystem in the Jianghan Plain is laid to the state of middle vulnerability. Therefore, the wetland conservation and eco-rehabilitation in the Jianghan Plain should be paid attention to. Wetlands in the Jianghan Plain are important components of wetland types in lake area in the middle and lower reaches the Changjiang (Yangtze) River and they fulfill many uses and functions related to hydrology, waste assimilation, ecosystem productivity and biodiversity. Owing to natural factors and The human activities, especially excessive reclamation from lakes, the shrinking process of the lakes has been accelerated. According to the analysis of wetland ecological function in the Jianghan Plain, this paper presented an index system related to productivity , stability and environmental capacity. By using the method of Analytic Hierarchy Process, we computed the values ​​of the relative weights of the indexes, and evaluated the vulnerability level of the wetland ecosystem by the method of multi-indexes. The case study showed that the the fragile extent of wetland ecosystem in the Jianghan Plain is 5.6. This means that the wetlan d ecosystem in the Jianghan Plain is laid to the state of middle vulnerability. Therefore, the wetland conservation and eco-rehabilitation in the Jianghan Plain should be paid attention to.
其他文献
目前,我国工程造价管理出现了一些新问题,作为造价人如何采取有效措施,推进、加快工程造价管理尽快纳入规范化、系统化、法制化轨道,已是十分重要的工作。为此,我们必须始终
《指导意见》重点指出:上海市科委决定不再认定市级孵化器,把孵化器的认定和评判权交给市场,而政府则发挥引导作用。上海《关于本市发展众创空间推进大众创新创业的指导意见
一、投笔从戎青少年时代,伊俊山埋头读书,曾认为“把书念好了,就是我最大的希望”。①尔后,他耳闻目睹了许多共产党人,爱国师生在北平抗日救亡运动中,“无辜被捕入狱坐牢,受
一个人做点好事并不难,难的是一辈子做好事。本文述评的就是这样一位一生爱国,艰苦奋斗的历史人物——近代中国海军宿将陈兆锵。陈兆锵,字铿臣,福建省闽侯县(今福州市)螺洲
根据我校的教学宗旨,产学研相结合,以就业为导向,致力于为企业培养一线技能型人才,这样的指导思想也代表了社会上部分同类中职学校。这样的办学思想引导了职专学生的学习方向
请下载后查看,本文暂不支持在线获取查看简介。 Please download and view, this article does not support online access to view profile.
9月12日,国务院国资委主任肖亚庆赴中国航空发动机集团有限公司调研并主持召开座谈会。调研座谈时,肖亚庆听取了中国航发董事长、党组书记曹建国,总经理、党组副书记李方勇等
九十年前,中国共产党在南昌发动和领导了震惊中外的八一起义,在生死关头挽救了中国革命,宣告了党领导的新型人民军队的诞生。从此,中国革命史翻开了全新篇章。八一南昌起义的
●美国纽约市的两名抢劫犯计划对银行进行抢劫,但他们来到银行后,抢劫的目标却发生了变化。他们抢劫的并非是银行现金,而是要求银 ● Two robbers in New York City plan to
商住楼一般具有功能复杂,火灾隐患大,消防监督管理难度大的特点。为预防火灾,减少火灾损失,有必要针对商住楼的特性,对商住楼进行火灾危险性评估,从而为日常的监督管理提供管