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Water demand for ecosystem protection in rivers with hyper-concentrated sediment-laden flow

Science china(Technological Sciences) 2004年第z1期47卷 186-198页

作者： luo huaming, li tianhong, ni jinren & wang yudong department of environmental engineering, peking university, beijing 100871, china The Key Laboratory of Water and Sediment Sciences, Ministry of Education, beijing 100871, china department of environmental engineering Peking University Beijing 100871 China

Sediment transport is one of the main concerns in a river system with hyper-concentrated flows. Therefore, the water use for sediment transport must be considered in study on the water demand for river ecosystem. The conventional methods for calculating the Minimum Water Demand for River Ecosystem (MWDRE) are not appropriate for rivers with high sediment concentration. This paper studied the MWDRE in wet season, dry season and the whole year under different water-and-sediment conditions in the Lower Yellow River, which is regarded as a typical river with sediment-laden flows. The characteristics of MWDRE in the river are analyzed. Firstly, the water demand for sediment transport (WDST) is much larger than the demands for other riverine functions, the WDST accounts for the absolute majority of the MWDRE. Secondly, in wet season when the WDST is satisfied, not only most of the annual incoming sediment can be transported downstream, but also the water demands for other river functions can be satisfied automatically, so that the MWDRE in wet season is identical to the WDST. Thirdly, in dry season, when the WDST is satisfied, the water demands for other river functions can also be satisfied, but the low sediment transport efficiency results in significant waste of water resources. According to these characteristics and aiming at decreasing sediment deposition in the riverbed and improving the utilization efficiency of water resources, hydrological engineering works can be used to regulate or control flow and sediment so that the sediment incoming in dry season can be accumulated and be transported downstream intensively and thus efficiently in wet season.

关键词： sediment-laden flow, the Lower Yellow River, water demand for river ecosystem, water demand for sediment transport

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On the variation of water resource structure in the Lower Yellow River

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Science china(Technological Sciences) 2004年第z1期47卷 127-141页

作者： ni jinren1, wang yudong1, QIAN Zhenghan1, li tianhong1 & ZHAO Yean2 1. department of environmental engineering, peking university The Key Laboratory of Water and Sedi- ment Sciences, Ministry of Education, beijing 100871, china 2. Institute of Hydraulic Research, Yellow River Conservancy Commission, Zhengzhou 450003, china department of environmental engineering Peking University The Key Laboratory of Water and Sediment Sciences Ministry of Education

In view of river functions and the Minimum Water Demand for River Ecosystem (MWDRE), the water resources in the Lower Yellow River is further divided into three portions, i.e. water available for ecosystem (WE), water exploitable for socioeconomic purposes (WS) and excess flood water (WF). Corresponding conceptions and practical significances are expounded in details. The annual amount of the three portions of water resources from 1950 to 2001 is worked out on the basis of the daily hydrologic data, and the division of different portions is discussed. The results indicate that although the essential water demand for river functions is considered preferentially, the amount of the WE has decreased dramatically while its proportion increased gradually since the 1950s, and the shortage to the MWDRE increased markedly; both the amount and the proportion of the WS decreased notably. Since the 1990s, the actual water consumption for socioeconomic purposes in the lower reaches of the river basin has already exceeded the maximum amount of the WS and has to take over the WE which is already insufficient, hence not only the normal river functions are further disturbed and the river course shrinks greatly, but also the proportion and potential danger of the WF show no decreasing tendency in spite of the sharp decrease of upstream runoff.

关键词： the Yellow River, water resource structure, water available for ecosystem, water exploitable for socioeconomic purposes, excess flood water.

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生态实践中的传承与创新--中国城市科学研究会景观学与美丽中国建设专业委员会座谈会纪实

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景观设计学（中英文） 2018年第3期6卷 46-57页

作者：白伟岚陈利顶方胜浩高静华韩辉姜斌孔祥伟李迪华李建伟李锦生李润楠李宗礼刘瑜罗涛吕焕来庞伟孙善坤唐艳红汤敏王君王小保王鑫王志芳卫超魏玉栋邢磊俞孔坚余洋张坪邹裕波张晶蕊(整理) 佘依爽(整理) 王颖(整理/译) 张健(译) 中国城市建设研究院中国科学院生态环境研究中心中国科学院城市与区域生态国家重点实验室浙江省景观设计和建设行业协会重庆纬图景观设计有限公司睿景文旅投资管理有限公司香港大学建筑学院园境建筑学部香港大学城市环境与大众健康虚拟现实实验室北京观筑景观规划设计院北京大学建筑与景观设计学院北京东方艾地景观设计有限公司山西省住房和城乡建设厅林产工业规划设计院城市规划设计三所水电水利规划设计总院北京大学地球与空间科学学院遥感与地理信息系统研究所福州大学建筑学院丹麦安博戴水道公司中国区市场部广州土人景观顾问有限公司中国文化景观集团易兰规划设计院古村之友太原市建筑设计研究院园林景观二所湖南省建筑设计院景观设计研究中心一方国际环境景观设计安徽省城乡规划设计研究院设计二所安徽省海绵城市建设研究中心中国美丽乡村研究中心北京正和恒基滨水生态环境治理股份有限公司研究院美国艺术与科学院哈尔滨工业大学建筑学院景观系重庆蓝调城市景观规划设计有限公司阿普贝思(北京)建筑景观设计咨询有限公司不详

2018年1月21日,中国城市科学研究会景观学与美丽中国建设专业委员会座谈会于北京大学建筑与景观设计学院举办。来自景观、生态、水利、规划等领域的30余位学者、设计师、教育者及其他从业人士参加了会议,并围绕美丽中国建设、生态文明... 详细信息

2018年1月21日,中国城市科学研究会景观学与美丽中国建设专业委员会座谈会于北京大学建筑与景观设计学院举办。来自景观、生态、水利、规划等领域的30余位学者、设计师、教育者及其他从业人士参加了会议,并围绕美丽中国建设、生态文明建设、景观设计学科建设、行业融合等议题展开讨论。座谈会最终达成共识,提出了跨界生态实践的迫切性和必要性,同时探讨了在教育和实践层面跨界的难点与问题——不同行业的优势、职责以及在"跨界"中的作用尚不明确,学科教育也未能很好地构建并明晰自身的核心竞争力——呼吁应积极促进学科与行业融合,使其适应当代需求。

关键词：景观设计学美丽中国生态文明建设跨学科协作行业融合

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