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| 1 | Influence of the impounding process of the Three Gorges Reservoir up to water level 172.5m on water eutrophication in the Xiangxi Bay显示文摘The water level of the Three Gorges Reservoir(TGR) rose to 172.5 m in two stages from September to November,2008.The hydrodynamic parameters and water quality parameters(e.g.flow velocity,temperature,turbidity and nutrient content) had been continuously monitored to reveal the influence of the impounding process of the TGR on the water eutrophication in the Xiangxi Bay(XXB).The maximal daily rise of the water level of the TGR was about 2.38 m.The water exchange between the mainstream(the Changjiang River) and the XXB of the TGR was enhanced by density current,and its main characteristics were a density-stratified flow in different directions.The water exchange reduced the differences of the water quality parameters(for example,temperature,turbidity,nutrient level,pH,etc.) between the mainstream and the XXB during the impounding process.Meanwhile,the water stability index in the mainstream remained small but it was lowered in the XXB.The main causes included the dilution by water of lower concentration of the chlorophyll a(Chl.a) entering from the mainstream,the decline of the water stability,and the increase of suspended silt,which induced the Chl.a to decrease in the XXB during the impounding process.The grade of the water eutrophication changed from middle eutrophic level to mesotrophic state in the process.However,as available nutrients were imported into the XXB from the mainstream during the impounding process the risk of water eutrophication increases in the XXB in the future. | YANG ZhengJian1,LIU DeFu1,JI DaoBin1,2 & XIAO ShangBin1,3 1 College of Civil & Hydroelectric Engineering,China Three Gorges University,Yichang 443002,China 2 School of Water Resources & Hydropower Engineering,Wuhan University,Wuhan 430072,China 3 Institute of Earth Environment,Chinese Academy of Sciences,Xi’an 710075,China | 2010 | Science China(Technological Sciences)2010，53，4： | 58 |
| 2 | Characteristics of one-year observation of VOCs,NOx, and O_3 at an urban site in Wuhan, China显示文摘A continuous online observation of ozone and its precursors(NOx, VOCs) was carried out in central urban Wuhan from September 2016 to August 2017. The concentration levels of ozone,NOx, VOCs and their variations in urban Wuhan were analyzed, as well as effects of VOCs on ozone photochemical generation and the main controlling factors for ozone production. During the observation period, the average concentrations of ozone and NOx in Wuhan was 22.63 and30.14 ppbv, respectively, and the average concentration of VOCs was 32.61 ppbv(42.3% alkanes,13.0% alkenes, 10.0% aromatics, 7.3% acetylene, 9.9% OVOCs, and 10.5% halohydrocarbons).Ozone concentration was higher in spring and summer as compared with autumn and winter,wheras VOCs and NOx concentratios were lower in spring and summer but higher in autumn and winter. Aromatics and alkenes, two of VOCs species, showed the highest contributions to ozone formation potential in Wuhan(35.7% alkenes, 35.4 aromatics, 17.5% alkanes, 8.6% OVOCs,1.6% halogenated hydrocarbons, and 1.4% acetylene). Among all VOCs species, those with the highest contribution were ethylene, m-xylene, toluene, propylene and o-xylene. The contribution of these five compounds to the total ozone formation potential concentration was 43.90%.Ozone-controlling factors in Wuhan changed within one day; during the early morning hours(6:00–9:00), VOCs/NOx was low, and ozone generation followed a VOCs-limited regime.However, during the peak time of ozone concentration(12:00–16:00), the ratio of VOCs/NOx was relatively high, suggesting that ozone generation followed a NOx-limited regime. | Yichang Yang Xingang Liu Jun Zheng Qinwen Tan Miao Feng Yu Qu Junling An Nianliang Cheng | 2019 | Journal of Environmental Sciences2019，31，5： | 26 |
| 3 | Re-Os dating of magnetite from the Shaquanzi Fe-Cu deposit,eastern Tianshan,NW China显示文摘Magnetite separates from the Shaquanzi Fe-Cu deposit in the eastern Tianshan are used for Re-Os geochronological study.Re-Os data show that magnetite separates contain ca.0.7 to 50.9 ppb Re and ca.16 to 63 ppt Os.Eight samples yield a model 3isochron age of(303±12)Ma(2),which is within uncertainty consistent with of the Re-Os date(295±7 Ma)of associated pyrite.Tectonic evolution shows that the Late Carboniferous Aqishan-Yamansu belt was a back-arc rift.Therefore,the Re-Os age of ca.300 Ma indicates that the Shaquanzi Fe-Cu deposit may have formed in a back-arc extensional environment and was closely related to mantle-derived magmatism.The successful application of Re-Os magnetite geochronology in the Shaquanzi Fe-Cu deposit suggests that the purity of magnetite,relatively high Re and Os contents,and the closure of Re-Os systematic are base factors for a successful Re-Os geochronology.There would be a good prospect for Re-Os geochronology for magnetite. | HUANG XiaoWen QI Liang WANG YiChang LIU YingYing | 2014 | Science China Earth Sciences2014，57，2： | 11 |
| 4 | Oxidation-Induced C--H Functionalization: A Formal Way for C--H Activation显示文摘 | Yichang Liu Hong Yi Aiwen Lei | 2018 | Chinese Journal of Chemistry2018，36，8： | 8 |
| 5 | Daily optimized model for long-term operation of the Three Gorges-Gezhouba Cascade Power Stations显示文摘This paper presents the step-by-step genetic algorithm based on artificial intelligence guidance and builds a long-term daily optimized operating model for the Three Gorges-Gezhouba Hydropower Complex with single generating set as the based operating unit. Actual operating data from 2004 to 2006 are used to verify the model, and results show that the simulation accuracy determined by measuring the total amount of cascade power generation reaches 99.66%. Statistic hydrological data of normal years and actual data of three years of 2004―2006 are respectively used to perform an optimized prediction of the power generation process and benefits in future when the water stored in the TGP Reservoir reaches 175 m level and power generation benefits under different operation modes, such as delayed subsiding water level, advance water storage, and adopting of different flood-limited water levels, are forecasted. In the case of years with normal inflows, the total amount of cascade power generation running on current specifications reaches 107500 GWh per year. If the commencement of water storage after the flood season is moved forward by 20 days, the amount of power generation can be increased by 3400 GWh per year. If the limited water level in the flood season is raised by three to five meters, the amount of power generation can be increased by 1600 to 3200 GWh per year. If the commencement of water storage is moved forward while the maximum water level allowed in the flood season is raised, the amount of power generation can be increased by 6400 GWh per year. | CAO GuangJing1, CAI ZhiGuo1?, LIU ZhiWu1 & WANG GuangQian2 1 China Three Gorges Project Corporation, Yichang 443002, China 2 State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China | 2007 | Science China(Technological Sciences)2007，50，z1： | 4 |
| 6 | Improved dispersion performance and interfacial compatibility of covalent-grafted MOFs in mixed-matrix membranes for gas separation显示文摘Mixed-matrix membranes(MMMs)have received much attention due to their processable advantages of polymer and high permeability and/or selectivity of porous metal-organic frameworks(MOFs)fillers.However,the interfacial defects caused by poor interaction between MOFs with polymers and the agglomeration phenomenon caused by uneven dispersion of MOFs are common problems in mixed-matrix membranes.Currently,the priming protocol is one of solutions to the above problems,but it cannot precisely regulate the dispersion of particles and the interfacial compatibility between two phases.Herein,covalent grafting of polyimide 6FDA-Durene onto the surface of UiO-66-NH2 can mitigate the aggregation of fillers inside the polymeric matrices and improve the interfacial interaction between two phases,thus significantly improving the CO_(2)/CH_(4)separation performance on the as-synthesized MMMs.The explored gas transport mechanism indicated that the improved separation was due to the raise of solubility selectivity.Furthermore,the stronger covalent bond between fillers and polyimide than physical interaction of priming protocol also endows the improved anti-plasticization phenomenon for CO_(2)/CH_(4)separation. | Chongqing Wang Guangjie Ren Kaifeng Wei Donghui Liu Tingting Wu Jinlong Jiang Junfeng Qian Yichang Pan | 2021 | Green Chemical Engineering2021，2，1： | 3 |
| 7 | Oxygen Isotope Exchange Kinetics Between Coexisting Minerals and Water in the Aral Granite Pluton of the Altay Mountains, Northern Xinjiang显示文摘Coexisting quartz, feldspar and biotite vary widely in their δ18O values and display a remarkable 18O/16O disequilibrium relation; especially, a quartz-feldspar reversal (△ 18OQUartz_feldspar< 0) exsists in the Aral granite pluton of the Altay Mountains, northern Xinjiang. The 18O / 16O exchange reaction definitely occurred between granite and water. Initial δ18O values of the granite and exotic fluid are evaluated by the mass balance consideration. The conventional method of discrimination between various magma derivations simply with δ18O values of either whole rock or separate minerals is misleading and unreliable. Experiments carried out by the authors show that the 18O / 16O exchange reaction is not accompanied by what geologists describe as petrological and mineralogical alteration effect. This decoupling relation implies that exchange reaction occurs at a relatively high temperature during subsolidus-postmagmatic cooling of magmas. The exchange mechanism is mainly diffusion-controlled. It | Liu Wei,Research Center of Mineral Resources Exploration, Chinese Academy of Sciences, Chinese Academy of Sciences, BeijingHe Baichu, Changsha Institute of Geotectonics, Chinese Academy of Sciences, Changsha, Hunanand Chen ZhenshengYichang Institute of Geology and Mineral Resources, Chinese Academy of GeologicalSciences, Yichang, Hubei | 1996 | Acta Geologica Sinica(English Edition)1996，70，4： | 3 |
| 8 | Research on forecasting model of sandstone deformation rate during sine wave loading segment under the lag effect显示文摘To reduce data variance caused by individual differences of different samples,a new experimental method is proposed by loading and unloading the axial forces with different frequencies and different waves of a certain load amplitude to the same rock sample without damaging it.Lag time segments are defined and fractionized into segments I and Ⅱ.Criterions for seg-mentation,definitions of relevant parameters and empirical analysis are also offered afterwards.In the course of sinusoidal loading,the serious peak value dislocation of the displacement variation rate and the loading rate is defined as peak dislocation.Meanwhile,the definition of the apparent tangent modulus is put forward and the linear relation between it and the vertical force in the frequency of 0.1,0.2,0.5 Hz sinusoidal loading segment is confirmed to be ever-present on the basis of the test data.Then the calculating formula of the deformation rate in non-lag time is deduced.It is thus suggested that the deformation rate should be codetermined by the loading rate df/dt and instant load f(t),which well explains the peak dislocation of the time-variable curve peak value of dl/dt and deformation rate of df/dt.Finally the lag time derivation model is established and by comparing the calculated values with the measured ones,it is demonstrated that the above formula offers a better simulation of the sandstone deformation rate in the sinusoidal loading segment,with the load amplitude being 96 kN and the frequency ranging from 0.1 Hz to 0.5 Hz. | LIU Jie1,2,LI JianLin1,2,QU JianJun1,ZHOU JiFang3,ZHANG ChaoFeng3 & LI JianWu1 1Key Laboratory of Geological Hazards on Three Gorges Reservoir Area,Ministry of Education,China Three Gorges University,Yichang 443002,China 2College of Civil and Hydropower Engineering,China Three Gorges University,Yichang 443002,China 3Er’tan Hydropower Development Company,Ltd.Chengdu 61000,China | 2010 | Science China(Technological Sciences)2010，53，5： | 2 |
| 9 | Efficiency of a re-usable Carius tube for determination of platinum group elements in ultramafic rocks显示文摘Digestion with aqua regia in Carius tube is commonly employed for determination of PGEs in geological samples. However, silicates cannot be completely dissolved by aqua regia and PGEs might partially remain in silicate residue. In this study, an ultramafic reference material was used to investigate the efficiencies of a new re-usable Carius tube after digestion at 220 and 240℃, and an autoclave-lined Carius tube at 260 and 280℃. The results show that about 10% of PGEs retained in the silicate residues at 220 and 5% still r℃ emains even digestion temperature increases to 280℃. These results agree with previous works that increasing the digestion pressure and temperature can achieve more effective dissolution. Thus, a modified digestion procedure for determination of PGEs in ultramafic rocks by the re-usable Carius tube was proposed in this study. | LIU Yingying QI Liang ZHAO Zheng HUANG Xiaowen WANG Yichang | 2014 | Chinese Journal Of Geochemistry2014，33，1： | 2 |
| 10 | Prepara- tion and characterization of liquid crystal composite film using photosensitive hydrophilic matrix显示文摘 | Liu Juihsiang Liu Hongchai Chong Yichang | 1996 | J Appl Polym Sci1996，61，10： | 1 |
| 11 | Evaluation of whole-course three-dimensional conformal radiotherapy combined with late-course accelerated hyperfractionated radiotherapy for esophageal carcinoma patients显示文摘学习的目的是评估整个功课的三维的保角的放射疗法(3DCRT ) 的治疗学的效果和安全的目的与食道的癌在病人上与迟了功课的加速的 hyperfractionated 放射疗法(LCAFR ) 结合了。有食道的癌的 101 个病人被划分成二个组的方法。观察组(49 个盒子) 被整个功课的 3DCRT 对待。在控制组(52 个盒子) 的病人被常规放射疗法对待。临床的效率和放射毒性在二个组之间被比较。结果包括放射食道炎(63.2%) 和气管炎(49.0%) 的副作用在观察组减少了,但是二个组之间没有重要差别(69.2% 和 55.7% 在控制) 。在观察的组的1-,2年、3年的肿瘤本地人控制率和全面幸存率显著地与控制组相比被改进,分别地87.8%,75.5%,63.3%对71.2%,55.8%,42.3%和85.7%,71.4%,46.7%对69.2%,51.9%,26.9%(所有 P < 0.05 )。整个功课的 3DCRT 的治疗学的效果为食道的癌与 LCAFR 相结合的结论比常规放射疗法优异。 | Dianfu Zhang Peliang Zhang Yuguo Wang Shuren Cao Ruiyan Fang Yichang Liu Tao Zhang | 2011 | The Chinese-German Journal of Clinical Oncology2011，10，3： | 1 |
| 12 | Multi-dimensional project management models for mega-construction companies and their applications显示文摘China is undertaking an increasing number of mega-infrastructure projects along with its rapid economic expansion.For participants in these projects,understand how to adapt the proper and efficient management strategies is critical.In this paper,we propose three distinct models for companies under various background and management requirements,based on sophisticated data analysis and model development.Moreover,we successfully committed these models with hydropower development projects and achieved a great progress in enhancing management efficiency. | LIN ZhengHang 1,2,QIANG MaoShan 1,2,TANG WenZhe 1,2,FAN QiXiang 3 &LIU Qiang 4 1 Institute of Project Management and Construction Technology,Tsinghua University,Beijing 100084,China 2 State Key Laboratory of Hydraulic and Engineering,Tsinghua University,Beijing 100084,China 3 China Three Gorges Corporation,Yichang 443002,China 4 School of Software,Tsinghua University,Beijing 100084,China | 2011 | Science China(Technological Sciences)2011，54，S1： | 1 |
| 13 | STABILITY ANALYSIS OF COFFERDAM SLUMP AND ITS APPLICATION IN THE CLOSURE OPERATION OF THREE GORGES PROJECT显示文摘A theoretical model is built to calculate the slump of dike head during process of cofferdam construction in river closure operation. Considering flow scours, the depth of scouring zone is estimated and its effect on slump scale can be determined. Using the theoretical model to analyze stability of cofferdam of The Three Gorge Project, slump length and volume of dike head in the river closure operation are predicted. When closure gap is 1 10-80m wide, slump occurs heavily and the maximum slump length of dike head reaches 7m. | WANG Guangqian Professor, Dept. of Hydraulic Engineering, Tsinghua University, Beijing 100084,China ZHOU Hougui Senior Engineer, Gezhouba Group Corporation, Yichang Hubei 443002, China LIU Lubo Master Student, Dept. of Hydraulic Engineering, Tsinghu | 1997 | International Journal of Sediment Research1997，12，3： | 1 |
| 14 | Stability of periodic solutions for an SIS model with pulse vaccination显示文摘 | Zhou Yichang Liu Hanwu | 2003 | Mathematical and Computer Modelling2003，，38： | 1 |
| 15 | Hydrogen and Oxygen Isotope Study on the Water-Rock Interaction of the Yinshan (Cu-) Pb-Zn-Ag Ore Deposit, Jiangxi Province显示文摘The δ18O values of vein quartz of different stages from the Yinshan ore deposit are constant around 16‰ and the calculated δ18OH2O values attain 8‰± ; the δDH2O values of fluid inclu-sions in vein quartz are constant at about-60‰. From the surface down to 1200 m below the δ18O values of altered rocks gradually decrease from 15‰± to 11‰± . Various water-rock inversion calculations indicate that the ore fluids were formed by the interaction between meteoric water and phyllite at 350℃ and the effective W/ R value of around 0.1. When the water-rock exchange in the upper mineralization system took place, the effective W / R value increased to 5.0 or more. As a result, an evolution and mineralization model of a buffered open system with two-stage water-rock interactions is proposed in this study. | Zhang Ligang, Liu Jingxiu, Yu Guixiang and Chen Zhensheng Yichang Institute of Geology and Mineral Resources, CAGS, Yichang, Hubei Jiang Minxi | 1996 | Acta Geologica Sinica(English Edition)1996，70，3： | 1 |
| 16 | Sedimentary diagenesis of rudist shoal and its control on reservoirs: A case study of Cretaceous Mishrif Formation, H Oilfield, Iraq显示文摘Based on the core, cast thin section, whole rock analysis, conventional physical properties and high pressure mercury intrusion test, the sedimentary diagenesis characteristics of rudist shoal in Cretaceous Mishrif Formation of H Oilfield, Iraq and its control on the reservoir were studied. The rudist shoal of the Mishrif Formation develops in the high-stand systems tract and is distributed in the high places of paleogeomorphology on the edge of platform with strong hydrodynamic force. According to the relative sea level changes, lithologic evolution and sedimentary structure characteristics of the rudist shoal, the single rudist shoal is divided into four lithologic sections: A, B, C and D, that is, low-angle cross-bedding pelletoids-rudist packstone, low-angle cross-bedding and parallel bedding arene-rudist grainstone, parallel bedding rudist gravel limestone, and horizontal bedding carbonaceous mudstone. The complete sedimentary sequence of a single rudist shoal is often disrupted. Several rudist shoals superimpose to form thick rudist shoal sediment. The single rudist shoal thickness and lithologic sections assemblage change regularly in vertical direction. The rudist shoal has the characteristics of 'strong dissolution, weak cementation and strong compaction', forming pore-type reservoir with intergranular pores, intergranular dissolved pores, mold pores, and dissolved pores. With mainly coarse pore throats larger than 5 μm, the reservoir is of medium-high porosity and high permeability. There is lithological reverse cycles inside single shoals and between single shoals, with content of mud crystals decreasing from the bottom to the top, dissolution increasing, cementation decreasing in strength, pore throats getting larger, and physical properties turning better. The rudist shoal of MB2-1 at the top of the high-stand systems tract has the largest thickness, moreover, subject to the strongest atmospheric freshwater leaching, this layer has the most significant dissolution and the largest pore throat, so it is the best reservoir of the Mishrif Formation. | YU Yichang SUN Longde SONG Xinmin GUO Rui GAO Xingjun LIN Minjie YI Liping HAN Haiying LI Fengfeng LIU Hangyu | 2018 | Petroleum Exploration and Development2018，45，6： | 0 |
| 17 | Microfluidic intestinal organoid-on-a-chip uncovers therapeutic targets by recapitulating oxygen dynamics of intestinal IR injury显示文摘Increasing evidence demonstrates that mammals have different reactions to hypoxia with varied oxygen dynamic patterns.It takes~24 h for tri-gas incubator to achieve steady cell hypoxia,which fails to recapitulate ultrafast oxygen dynamics of intestinal ischemia/reperfusion(IR)injury.Inspired from the structure of native intestinal villi,we engineered an intestinal organoid chip embedded with engineered artificial microvessels based on coaxial microfluidic technology by using pH-responsive ZIF-8/sodium alginate scaffold.The chip was featured on:(i)eight times the oxygen exchange efficiency compared with the conventional device,tri-gas incubator,(ii)implantation of intestinal organoid reproducing all types of intestinal epithelial cells,and(iii)bio-responsiveness to hypoxia and reoxygenation(HR)by presenting metabolism disorder,inflammatory reaction,and cell apoptosis.Strikingly,it was found for the first time that Olfactomedin 4(Olfm4)was the most significantly downregulated gene under a rapid HR condition by sequencing the RNA from the organoids.Mechanistically,OLFM4 played protective functions on HR-induced cell inflammation and tissue damage by inhibiting the NF-kappa B signaling activation,thus it could be used as a therapeutic target.Altogether,this study overcomes the issue of mismatched oxygen dynamics between in vitro and in vivo,and sets an example of next-generation multisysteminteractive organoid chip for finding precise therapeutic targets of IR injury. | Jinjian Huang Ziyan Xu Jiao Jiao Zongan Li Sicheng Li Ye Liu Ze Li Guiwen Qu Jie Wu Yun Zhao Kang Chen Jieshou Li Yichang Pan Xiuwen Wu Jianan Ren | 2023 | Bioactive Materials2023，，12： | 0 |
| 18 | Ordovician-Silurian Boundary Extinction and Its Relationship to Iridium and carbon Isotope Anomalies显示文摘The abundance distributions of more than 40 elements in the No. 502 Ordovician-Silurian (O/S) bounda-ry section at Fenxiang, Yichang have been studied by RNAA and INAA. The results show that in the bounda-ry bed, there is a distinctive Ir anomaly because the Ir concentration abruptly increases to 0.64 ppb.Furthermore, the Ir is positively correlated in abundance variation with some siderophile and sulphophile ele-ments. In the same bed of the O/S boundary section at Huanghuachang, Yichang, there is also a δ13C excur-sion. These geochemical signs support the hypothesis that the terminal Ordovician mass extinction was proba-bly related to extraterrestrial event, and provide new evidence for defining the O/S boundary between theHirnantia-Kinnella and G. persculptus Zones. | Wang Xiaofeng Chai Zhifang Yichang Institute of Geology and Minieral Resources, Chinese Academy of Geological Sciences, Yichang. Hubei Institute of High Energy, Academia Sinica, Beijing Liu Linqun | 1990 | Acta Geologica Sinica(English Edition)1990，64，1： | 0 |
| 19 | Disruption of ER ion homeostasis maintained by an ER anion channel CLCC1 contributes to ALS-like pathologies显示文摘Although anion channel activities have been demonstrated in sarcoplasmic reticulum/endoplasmic reticulum(SR/ER),their molecular identities and functions remain unclear.Here,we link rare variants of Chloride Channel CLIC Like 1(CLCC1)to amyotrophic lateral sclerosis(ALS)-like pathologies.We demonstrate that CLCC1 is a pore-forming component of an ER anion channel and that ALS-associated mutations impair channel conductance.CLCC1 forms homomultimers and its channel activity is inhibited by luminal Ca^(2+)but facilitated by phosphatidylinositol 4,5-bisphosphate(PIP2).We identified conserved residues D25 and D181 in CLCC1 N-terminus responsible for Ca^(2+)binding and luminal Ca^(2+)-mediated inhibition on channel open probability and K298 in CLCC1 intraluminal loop as the critical PIP2-sensing residue.CLCC1 maintains steady-state[Cl^(–)]ER and[K+]ER and ER morphology and regulates ER Ca^(2+)homeostasis,including internal Ca^(2+)release and steady-state[Ca^(2+)]ER.ALS-associated mutant forms of CLCC1 increase steady-state[Cl^(–)]ER and impair ER Ca^(2+)homeostasis,and animals with the ALS-associated mutations are sensitized to stress challenge-induced protein misfolding.Phenotypic comparisons of multiple Clcc1 loss-of-function alleles,including ALS-associated mutations,reveal a CLCC1 dosage dependence in the severity of disease phenotypes in vivo.Similar to CLCC1 rare variations dominant in ALS,10%of K298A heterozygous mice developed ALS-like symptoms,pointing to a mechanism of channelopathy dominant-negatively induced by a loss-of-function mutation.Conditional knockout of Clcc1 cell-autonomously causes motor neuron loss and ER stress,misfolded protein accumulation,and characteristic ALS pathologies in the spinal cord.Thus,our findings support that disruption of ER ion homeostasis maintained by CLCC1 contributes to ALS-like pathologies. | Liang Guo Qionglei Mao Ji He Xiaoling Liu Xuejiao Piao Li Luo Xiaoxu Hao Hanzhi Yu Qiang Song Bailong Xiao Dongsheng Fan Zhaobing Gao Yichang Jia | 2023 | Cell Research2023，33，7： | 0 |
| 20 | Application of Ordinal Set Pair Analysis in Annual Rainfall Prediction of Liao River Basin显示文摘[Objective] The research aimed to study the application of ordinal set pair analysis in the annual precipitation prediction of Liao River basin.[Method] The ordinal theory was introduced into the set pair analysis modeling,and the prediction model of set pair analysis was improved.A kind of rainfall prediction model based on the ordinal set pair analysis (OSPA) was put forward.The time sequence of annual rainfall in the hydrological rainfall station of Liao River basin during 1956-2006 was the research objective.The annual rainfall during 1998-2006 was predicted by the model,and the error analysis was given.[Result] In the relative errors of predicted results by ordinal set pair analysis,there were six relative errors within 5%,which occupied 66.7% of the total prediction number.One relative error was during 5%-10%,which occupied 11.1% of the total prediction number.Two relative errors were during 10%-15%,which occupied 22.2% of the total prediction number.All the relative errors were less than 20%,which met the precision requirement of annual rainfall prediction in Forecast Specification of Hydrological Information.[Conclusion] The rainfall prediction based on the ordinal set pair analysis model had high precision,and the prediction result was ideal.It was suitable for the annual rainfall prediction. | ZHANG Xiao-zhuang1,LIU Yin-di2,ZHAO Peng3,ZHANG Ze-zhong2 1.Guodian Diqing Shangri-la Generating Limited Liability Company,Shangri-la 674402,China 2.North China University of Water Resources and Electric Power,Zhengzhou 450011,China 3.Three Gorges Project Administration of Yangtze River Three Gorges Corporation,Yichang 443133,China | 2011 | Meteorological and Environmental Research2011，2，7： | 0 |
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