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| 1 | An ecological hydraulic radius approach to estimate the instream ecological water requirement显示文摘这篇散文定义 ecdogical 流动速度以及生态的水力的半径的概念( EP 并且建议认为两个是水路 infoimation 的生态的水力的半径 apprcch ( EPA )(包括水力的半径,粗糙系数和水力的 adient )并且为某些 ecciogical 的维护的要求的 stresrn 速度 necesssry 都一起工作。EHEA 的关键 porameter 是修理水路代表性的相应于 EHR,在抛物线之间的关系由塑造了 cioss 部分的流动区域和水力的半径的流动区域被推出。EHRA 不仅为足够的鱼 spaing 移植满足流动速度的要求,而且对在有另外的生态的问题的问候的 ecdogical 流动适用(例如计算在里面为搬运沉积并且为污染 self-puHfication 的流流动要求,等等) 。这篇散文照亮了作为一个例子在 Yalong 河的 Niqu 分支拿 Zhuba Hydrologyical 车站水路的生态的水要求的评价的计算过程。另外,我们把 EHRA 与 Tennant apprcch 作比较。生态的水要求由 EHEA 计算了的 Zhuba 水文学车站躺在最小和有利的生态的水要求之间的结果表演由 Tennant 途径计算了。这由于事实生态的流动速度(例如鱼 spaing miration 流动,速度被考虑,生产对实际状况适用的结果。 | LIU Changming MEN Baohui | 2007 | Progress in Natural Science:Materials International2007，17，3： | 20 |
| 2 | Estimating the minimum in-stream flow requirements via wetted perimeter method based on curvature and slope techniques显示文摘Under the assumptions of triangular cross section channel and uniform stable flow, an analytical solution of the minimum ecological in-stream flow requirement (MEIFR) is deduced. Based on the analytical solution, the uncertainty of the wetted perimeter method is analyzed by comparing the two techniques for the determination of the critical point on the relationship curve between wetted perimeter, P and discharge, Q. It is clearly shown that the results of MEIFR based on curvature technique (corresponding to the maximum curvature) and slope technique (slope being 1) are significantly different. On the P-Q curve, the slope of the critical point with the maximum curvature is 0.39 and the MEIFR varied prominently with the change of the slope threshold. This indicates that if a certain value of the slope threshold is not available for slope technique, curvature technique may be a better choice. By applying the analytical solution of MEIFR in the losing rivers of the Western Route South-to-North Water Transfer Project in China, the MEIFR value via curvature technique is 2.5%-23.7% of the multi-year average annual discharge, while that for slope technique is 11%-105.7%. General conclusions would rely on the more detailed research for all kinds of cross-sections. | LIU Suxia' MO Xingguo XIA Jun LIU Changming LINZhonghui MEN Baohui JI Lina | 2006 | Journal of Geographical Sciences2006，16，2： | 2 |
| 3 | A new criterion for defining the breakpoint of the wetted perimeter-discharge curve and its application to estimating minimum instream flow requirements显示文摘The wetted perimeter method(WPM) is used in hydrology and hydraulics to calculate instream flows.The WPM requires few data.It requires only the values of the wetted perimeter,flow and water level,which can be obtained from the hydrologic stations of the river in question.In addition,the WPM is not limited by the impacts of human activities on the river runoff.Therefore,this method is generally suitable for the current conditions in China.However,the process of applying the WPM involves two key aspects:how to plot the curve describing the relationship between the wetted perimeter and the discharge and how to confirm the breakpoint of the wetted perimeter-discharge curve.The traditional method is to calculate the curvature or the slope of the wetted perimeter-discharge curve to obtain the minimum flow.According to this method,the minimum flow corresponds to the point of maximum curvature or to the point at which the slope of the curve is equal to 1.The wetted perimeter-discharge curve of a natural river is only part of the complete curve.Thus,the instream flow calculated by the traditional method is the minimum or maximum discharge.The new criterion for defining the breakpoint of the wetted perimeter-discharge curve is that the slope at the breakpoint is a relative maximum,the second-largest slope.The discharges at the breakpoints corresponded to the minimum flow levels required to maintain the ecological function of the river.The minimum instream flow requirements(MIFRs) of four typical reaches,Zhuba,Daofu,Ganzi and Zumuzu hydrological stations on the West Course of the First Stage Project of the South-North Water Transfer Project(WCFSPSNWTP),are calculated using an improved wetted perimeter method(IWPM).The results show that the MIFRs of Zhuba,Daofu,Ganzi and Zumuzu are approximately 9.06-14.5 m 3 s-1,20.7-43.5 m3 s-1,38.8-77.2 m 3 s-1 and 40.4-59.5 m 3 s-1,corresponding to 11.7%-33.9%,14.2%-37.6%,12.4%-28.4% and 17.5%-30.2%,respectively of the annual average flow(AAF).These MIFRs can maintain good ecological function in a river according to the criterion furnished by the Tennant method. | MEN BaoHui LIU ChangMing LIN ChunKun | 2012 | Science China(Technological Sciences)2012，55，10： | 2 |
| 4 | Attribute Recognition Model for Evaluating Water Quality显示文摘 | Men Baohui Zhao Xiejing | 2003 | Journal of Zhengzhou University2003，，9： | 1 |
| 5 | Attribute recognition model for evaluating water quality显示文摘 | Men Baohui Zhao Xiejing Liang Chuan | 2003 | Journal of Zhengzbou University (Natural Science Edition)2003，35，3： | 1 |
| 6 | Chaotie analysis on precipitation time series of Sichuan middle part in upper region of Yangtze显示文摘 | Baohui Men Chuan Liang Xiejing Zhao | 2004 | Nature and Science2004，2，1： | 1 |
| 7 | Attribute Recognition Model for Evaluating Water Quality显示文摘 | Zhao Xiejing Liang Chuan | 2003 | Journal of Zheng zhou university2003，35，3： | 1 |
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