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Simulating Hydrologic Changes with Climate Change Scenarios in the Haihe River Basin

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Pedosphere 2005年第5期15卷 53-58页

作者： YUAN Fei 1,2. XIE Zheng-Hui1,* 2. LIU Qian1 and XIA Jun 3 1LASG, Institute of Atmospheric Physics, Chinese Academy of sciences, Beijing 10002. (China). 2.college of Water {2. and Environment, Hohai university, Nanjing 2.0098 (China)3 Institute of Geographical science & Natural {2., Chinese Academy of sciences, Beijing 100101 (China) Institute of Atmospheric Physics Chinese Academy of sciences Beijing 10002. （China）. 2.college of Water resources and Environment Hohai university Nanjing 2.0098 （China）3 Institute of Geographical science & Natural resources Beijing 100101 （China）

Climate change scenarios, predicted using the regional climate modeling system of PRECIS (providing regional cli-mates for impacts studies), were used to derive three-layer variable infiltration capacity (VIC-3L) land surface model forthe simulation of hydrologic processes at a spatial resolution of 0.2.° × 0.2.° in the Haihe River Basin. Three climatescenarios were considered in this study: recent climate (1961-1990), future climate A2.(1991-2.00) and future climateB2.(1991-2.00) with A2.and B2.being two storylines of future emissions developed with the Intergovernmental Panel onClimate Change (IPCC) special report on emissions scenarios. Overall, under future climate scenarios A2.and B2. theHaihe River Basin would experience warmer climate with increased precipitation, evaporation and runoff production ascompared with recent climate, but would be still likely prone to water shortages in the period of 2.31-2.70. In addition,under future climate A2.and B2. an increase in runoff during the wet season was noticed, indicating a future rise in theflood occurrence possibility in the Haihe River Basin.

关键词： climate change regional climate modeling system runoff VIC-3L model

The evolution of cooperation in asymmetric systems

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science China(Life sciences) 2010年第1期53卷 139-149页

作者： WANG RuiWu1 & SHI Lei2.1 State Key Laboratory of Genetic resources and Evolution,Kunming Institute of Zoology,Chinese Academy of science,Kunming 6502.3,China 2.Statistics and Mathematics {2.,Yunnan university of Finance and Economics,Kunming 6502.1,China 1. State Key Laboratory of Genetic resources and Evolution Kunming Institute of Zoology Chinese Academy of Science Kunming 650223 China2. Statistics and Mathematics College Yunnan University of Finance and Economics Kunming 650221 China

Explaining the "Tragedy of the Commons" of the evolution of cooperation remains one of the greatest problems for both biology and social *** interaction,which is one of the most important characteristics of cooperative systems,has not been sufficiently considered in the existing models of the evolution of *** the inequality in the number and payoff between the cooperative actors and recipients in cooperation systems,discriminative density-dependent interference competition will occur in limited dispersal *** model and simulation show that the local but not the global stability of a cooperative interaction can be maintained if the utilization of common resource remains unsaturated,which can be achieved by density-dependent restraint or competition among the cooperative *** intense density dependent interference competition among the cooperative actors and the ready availability of the common resource,with a higher intrinsic contribution ratio of a cooperative actor to the recipient,will increase the probability of *** cooperation between the recipient and the cooperative actors can be transformed into conflict and,it oscillates chaotically with variations of the affecting factors under different environmental or ecological *** higher initial relatedness(*** to kin or reciprocity relatedness),which is equivalent to intrinsic contribution ratio of a cooperative actor to the recipient,can be selected for by penalizing less cooperative or cheating actors but rewarding cooperative individuals in asymmetric *** initial relatedness is a pivot but not the aim of evolution of *** explains well the direct conflict observed in almost all cooperative systems.

关键词： cooperation altruism density dependent tragedy of the commons oscillation chaos asymmetric interaction interference competition

Tillage Effect on Organic Carbon in a Purple Paddy Soil

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Pedosphere 2006年第5期16卷 660-667页

作者： HUANG Xue-Xia GAO Ming WEI Chao-Fu XIE De-Ti PAN Gen-Xing college of resources and Environment Southwest Agricultural University Chongqing 400716 （China） college of environmental {2. and Technology Guangzhou University Guangzhou 510006 （China） college of resources and Environment Nanjing Agricultural University Nanjing 210095 （China）

The distribution and storage of soil organic carbon (SOC) based on a long-term experiment with various tillage systems were studied in a paddy soil derived from purple soil in chongqing, China. Organic carbon storage in the 0-2. and 0-40 cm soil layers under different tillage systems were in an order: ridge tillage with rice-rape rotation (RT-rr) > conventional tillage with rice only (CT-r) > ridge tillage with rice only (RT-r) > conventional tillage with rice-rape rotation (CT-rr). The RT-rr system had significantly higher levels of soil organic carbon in the 0-40 cm topsoil, while the proportion of the total remaining organic carbon in the total soil organic carbon in the 0-10 cm layer was greatest in the RT-rr system. This was the reason why the RT-rr system enhanced soil organic carbon storage. These showed that tillage system type was crucial for carbon storage. Carbon levels in soil humus and crop-yield results showed that the RT-rr system enhanced soil fertility and crop productivity. Adoption of this tillage system would be beneficial both for environmental protection and economic development.

关键词： carbon sequestration organic carbon storage purple paddy soil tillage system

Arbitrarily long distance quantum communication using inspection and power insertion

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Chinese science Bulletin 2009年第1期54卷 158-162页

作者： WANG WanYing1,2.WANG Chuan1,2.ZHANG GuangYu1,3 & LONG GuiLu1,2.1 Department of Physics,Tsinghua university,Beijing 100084,China 2.Tsinghua National Laboratory for Information science and Technology,Tsinghua university,Beijing 100084,China 3 college of Applied science,Harbin university of science and Technology,Harbin 150080,China Department of Physics Tsinghua University Beijing 100084 China Tsinghua National Laboratory for Information science and Technology Tsinghua University Beijing 100084 China college of Applied science Harbin University of Science and Technology Beijing 100084 China

The biggest obstacle for long distance quantum communication is the channel loss and the channel noise on photons. In this paper,a method to solve this problem was analyzed using inspection and power insertion (IPI). It is proved that quantum communication may be established over arbitrarily long distance using this technology. The amount of resources required is a polynomial function of the dis-tance. IPI is proposed as a general technique to prolong quantum secure direct communication where secret messages are transmitted directly over a quantum channel.

关键词：长距离量子通信量子安全通信量子密匙分布噪声

Monitoring Dynamic Change of Land Cover Based on SVM and Satellite Images in Hanoi,Vietnam

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Wuhan university Journal of Natural sciences 2010年第4期15卷 355-362页

作者： ZHAO Jinling1,2. LIU Chuang1, 3 1. Institute of Geographic sciences and Natural resources Research, Chinese Academy of sciences, Beijing 100101, China 2. Graduate university of Chinese Academy of sciences, Beijing 100049, China 3. college of resources science and Technology, Beijing Normal university, Beijing 100875, China Institute of Geographic sciences and Natural resources Research Chinese Academy of Sciences Beijing China Graduate university of Chinese Academy of sciences Beijing China college of resources {2. and Technology Beijing Normal University Beijing China

An integral method,combining support vector ma-chine (SVM) with remote-sensing analysis techniques,was ex-plored to monitor Hanoi’s dynamic change of land cover. The landsat thematic mapper (TM) image in 1993,the enhanced the-matic mapper plus (ETM+) image in 2.00,and the image with the charge-coupled device camera (CCD) on the China-Brazil earth resources satellite (CBERS) in 2.08 were used. Six land-cover types,including built-up areas,woodland,cropland,sand,water body and unused land,were identified. The detected results showed visually the rapid urban expansion as well as land-cover change of Hanoi from 1993 to 2.08. There were 12.637.54 hm2.cropland de-creased between 1993 and 2.00,and 8 2.7.6 hm2.cropland de-creased between 2.00 and 2.08. Compared with cropland,wood-land firstly decreased and then increased,and the other types did not change significantly. The results indicate that CBERS dataset has the application potential in world resources researches.

关键词： land cover the China-Brazil earth resources satellite (CBERS) support vector machine (SVM) change detection

Research of E-Commerce System Based on EJB for Manufacture Enterprise

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Research of E-Commerce System Based on EJB for Manufacture E...

Zeolites:One Important Catalyst Carrier for Abiogenic Methane Formation

第十届国际制造工程与管理会议

作者： WEI Zhao-wen, LI Yong, SU Yi-dan (1. Computer & Information Engineering college, Guangxi university,Nanning 530004, China 2. Business Administration college, chongqing university, chongqing 400044, China)

＜正＞ During the popular and development in Internet, more and more EC systems are running on Internet. Manufacture enterprise establishes EC system, integrates the systems between enterprises replace the traditional MIS system. The manufacture enterprise will face some difficulties when it begins to establish EC system. In order to solve the difficulties, the EC system not only includes the functions which in general EC system, but also integrates ERP system, manages the enterprise from three aspects: relationship between manufacturer and customers, enterprise resources, and supplying chain, and gives the manufacturer more intelligent information. As the departments of enterprise exchange data very frequently, connect the sellers and suppliers by using Internet, the traditional C/S architecture isn’t satisfied by present needs. It is the only way that uses Multi-tier *** （Enterprise Java Bean） is a Multi-tier distributed architecture designed by SUN company. The Enterprise JavaBeans architecture is a component architecture for the development and development of component-based distributed business applications. Applications written using the Enterprise JavaBeans architecture are scalable, transactional, and multi-user secure. These applications may be written once, and then deployed on any server platform that supports the Enterprise JavaBeans specification. There are many superiorities using EJB when design computer *** EC System for Manufacture Enterprise is based on EJB architecture. We define four EJB containers, namely, CRM component, POM component, Knowledge Management component and ERP component. CRM EJBs take the form of managing the customer-supplier relationship, reducing the number of contracts the manufacturer must make with the end customers. POM EJBs take the form of order processing activities. These order taking, order fulfillment, and managing the logistics and transportation involved in the physical movement of the products. KM E

关键词： E-Commerce EJB CRM ERP

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地学前缘 2009年第S1期16卷 140-140页

作者： Yong Chen~1,Guilin Zhou~2.1.college of Geo-resources and Information,China {2. of Petroleum,Dongying 2.7061,China. 2.college of environmental and Biologic Engineering,chongqing Technology and Business {2.,chongqing 400067,China

Recently,methane of possible abiogenic origin has been reported from many localities within the Earth’s ***,little is known about the mechanisms of abiogenic methane formation during such *** Fischer-Tropsch reaction as a well known process for converting CO2./sub> to hydrocarbon gas by reaction with H2./sub> may take place on a metallic iron or iron oxide catalyst and also may take place on

关键词： zeolites abiogenic methane catalyst carrier

Preliminary study on the origin identification of natural gas by the parameters of light hydrocarbon

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science China Earth sciences 2008年第S1期51卷 131-139页

作者： HU GuoYi 1,2.3 ,LI Jian 1,2.,LI Jin 1,2.,LI ZhiSheng 1,2.,LUO Xia 1,2.,SUN QingWu 1,2.&MA ChengHua 1,2.1 Research Institute of Petroleum Exploration and Development(Langfang Branch),Petrochina,Langfang 065007,China 2.The Key Laboratory of Gas Formation and Development,Petrochina,Langfang 065007,China 3 college of Geo-resources and Information,China {2. of Petroleum,Beijing 102.00,China Petrochina Res Inst Petr Explorat & Dev Langfang Branch Langfang 065007 Peoples R China Petrochina Key Lab Gas Format & Dev Langfang 065007 Peoples R China China Univ Petr Coll Georesources & Informat Beijing 102200 Peoples R China

The light hydrocarbon composition of 2.9 natural gas samples and individual light hydrocarbon carbon isotopes of 53 natural gas samples from typical humic-sourced gas and sapropelic-sourced gas in the four basins of China have been determined and *** identification parameters for humic-sourced gas and sapropelic-sourced gas are proposed or *** differences of compound-specificδ13C value of individual light hydrocarbon between humic-sourced gas and sapropelic-sourced gas have been *** humic-sourced gas has the distribution ofδ13C benzene > -2.‰,δ13C toluene >-2.‰,δ13C cyclohexane >-2.‰andδ13C methyl cyclohexane >-2.‰,while the sapropelicsourced gas has the distribution ofδ13C benzene 2.‰,δ13C toluene 2.‰,δ13C cyclohexane 2.‰and δ13C methyl cyclohexane 2.‰.Among the components of C7 light hydrocarbon compound,such as normal heptane(nC7),methyl cyclohexane(MCH)and dimethyl cyclopentane(ΣDMCP),etc,relative contents of nC7 and MCH are influenced mainly by the source organic matter type of natural ***,it is suggested that the gas with relative content of nC7 of more than 30%and relative content of MCH of less than 70%is sapropelic-sourced gas,while gas with relative content of nC7 of less than 35%and relative content of MCH of more than 50%is humic-sourced *** components of C5-7 aliphatics, the gas with relative content of C5-7 normal alkane of more than 30%is sapropelic-sourced gas,while the gas with relative content of C5-7 normal alkane of less than 30%is humic-sourced *** paremeters have been suggested to identify humic-sourced gas and sapropelic-sourced gas.

关键词： natural gas humic-sourced gas sapropelic-sourced gas carbon isotope light hydrocarbon parameters

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重庆市退耕还林条件的区域比较研究

水土保持学报 2001年第6期15卷 81-83页

作者：徐刚西南师范大学资源与环境科学学院重庆北碚400715

水土流失对重庆市的生态环境和三峡水库运行安全造成严重影响。退耕还林是治理水土流失的重要举措。本文从系统学和区域差异性的观点出发 ,建立了重庆市退耕还林条件的评价体系 ,对重庆市各区县的自然条件、区域经济发展水平和退耕还林... 详细信息

水土流失对重庆市的生态环境和三峡水库运行安全造成严重影响。退耕还林是治理水土流失的重要举措。本文从系统学和区域差异性的观点出发 ,建立了重庆市退耕还林条件的评价体系 ,对重庆市各区县的自然条件、区域经济发展水平和退耕还林能力等进行了综合评价 ,划分了重庆市退耕还林条件的区域类型。

关键词：退耕还林条件区域差异综合评价重庆