A Method of Catchments Health Assessment under Value-pressure Model and Its Application in Urbanized

来源 :Chinese Geographical Science | 被引量 : 0次 | 上传用户:hostname
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
Catchments health assessment is fundamental to effective catchments management. Generally, an as-sessment method should be selected to reflect both the purpose of assessment and local characteristics. A trial in Shanghai was conducted to test the method for catchments health assessment in urbanized river network area. Seven indicators that described four dimensions of river, river network, land use and function, and local feature were used to assess catchments values; while possible change rate of urbanization and industrialization in the next 3 years were chosen for catchments pressure assessment in the value-pressure model. Factors related to catchments classi-fication, indicators measurement and protection priority have been considered in the development strategies for catchments health management. The results showed that value-pressure assessment was applicable in urbanized catchments health management, particularly when both human and catchments had multiple demands. As a result of over 30-year rapid urbanization, more than 70% of Shanghai river network area was still in a healthy condition with high catchments values, among them, 39.3% was under high pressure. Poor water quality, simplified river system and weakened local feature of river pattern had largely affected catchments health in Shanghai. Lack of long-term monitoring data would seriously restrict the development and validity of catchments health assessment. Catchments health assessment is fundamental to effective catchments management. Generally, an as-sessment method should be selected to reflect both the purpose of assessment and local characteristics. A trial in Shanghai was conducted to test the method for catchments health assessment in urbanized river network area Seven indicators that said four dimensions of river, river network, land use and function, and local feature were used to assess catchments values; while possible change rate of urbanization and industrialization in the next 3 years were chosen for catchments pressure assessment in the value Factors related to catchments classi-fication, indicators measurement and protection priority have been considered in the development strategies for catchments health management. The results showed that value-pressure assessment was applicable in urbanized catchments health management, particularly when both human and catchments had multiple demands. As a result o f over 30-year rapid urbanization, more than 70% of Shanghai river network area was still in a healthy condition with high catchments values, among them, 39.3% was under high pressure. Poor water quality, simplified river system and weakened local feature of river pattern had largely affected catchments health in Shanghai. Lack of long-term monitoring data would seriously restrict the development and validity of catchments health assessment.
其他文献
说起迈凯轮F1,这里面有着许多说不完的纪录和故事,这是一款充满传奇色彩的超级跑车,同时这也是一款令许多车迷都顶礼膜拜的超级跑车,因为它曾经创造的许多世界纪录足以证明这
针对小浪底水库蓄水运用初期坝基渗流异常问题,在分析坝基防渗体系基础上探讨了坝基渗流原因,介绍了三个阶段帷幕补强灌浆等工程措施及处理效果,从渗水量变化、典型库水位下
离岸金融市场的出现是我国对外经贸关系发展的一个新领域,从1989年5月招商银行开办离岸金融业务以来,我国银行开办离岸金融业务已有5年多的时间.除深圳招商银行以外,深圳的交
请下载后查看,本文暂不支持在线获取查看简介。 Please download to view, this article does not support online access to view profile.
毛泽东主席唐卡画像 高103.5厘米,宽74厘米。1954年十四世达赖喇嘛到北京出席第一届全国人民代表大会时敬献毛泽东主席的礼品。上面绘有9幅反映西藏和平解放后,进藏部队和工
目的:观察桃红四物汤防治奥沙利铂所致神经毒性的临床疗效。方法:将73例消化系统癌症患者随机分为2组,2组按病种和病理类型制定并实施含奥沙利铂的联合化疗,治疗组37例化疗前
Objective: To evaluate the possible association between plasma total homocysteine or other amino acid concentrations and gestational diabetes or glucose intoler
以小浪底水电厂水轮发电机组励磁装置为例,介绍了励磁系统的构成、主要设备参数和灭磁方式,并分析了励磁系统的运行和维护情况。应用结果表明,该套励磁系统具有自动化程度高
Human activities,such as blasting excavation,bolting,grouting and impounding of reservoirs,will lead to disturbances to rock masses and variations in their stru
北京的玉渊潭,林深草绿,更有一潭汪洋般的碧波氤氲着,远远地走向它,就被湿润的空气舒服上了。这的确是一处免费吸氧的大氧吧。天上飞的鸟儿、水中游的鱼儿、鸭儿,形成大都市中难得