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Estimating surface evapotranspiration using combined MODIS and CBERS-02 data

Science china(Technological Sciences) 2005年第S2期48卷 145-160页

作者： XIN Xiaozhou1,2, LIU Qinhuo1, TANG Yong1,3, TIAN Guoliang1, GU Xingfa1, LI Xiaowen1,2, ZHENG Hongsheng4 & CHEN Jiayi4 1. State Key Laboratory of Remote Sensing Science, Institute of Remote Sensing Applications, Chinese Academy of Sciences, Beijing 100101, china 2. Research Center for Remote Sensing and GIS, department of geography, Beijing normal university, Beijing 100875, china 3. Graduate university of Chinese Academy of Sciences, Beijing 100039, china 4. department of Atmospheric Physics, Peking university, Beijing 100871, china 1. State Key Laboratory of Remote Sensing Science Institute of Remote Sensing Applications Chinese Academy of Sciences 100101 Beijing China2. Research Center for Remote Sensing and GIS Department of Geography Beijing Normal University 100875 Beijing China3. Graduate University of Chinese Academy of Sciences 100039 Beijing China4. Department of Atmospheric Physics Peking University 100871 Beijing China

Spatial scale error is one of the most serious problems in the estimates of land surface heat fluxes of sensible and latent from satellite-borne data such as MODIS 1km resolution reflectance and emissive data. One of the feasible and economic ways to decrease the spatial scale error is to use high resolution land use class data together with the MODIS data. CBERS-02 data were used to produce land use class of Baiyangdian area, Hebei Province, china in the autumn of 2004. The area ratio of each class in MODIS pixel was calculated, and used to derive the heat fluxes of the mixed pixel. The results showed that the estimated heat fluxes of soil, sensible and latent have been changed remarkably after using the high resolution land class data. It could be concluded from the comparison between simulated and ground-measured fluxes as well as the theoretical analysis that high resolution land class data are useful to diminishing the scale error of heat fluxes estimated from low resolution satellite data.

关键词： surface evapotranspiration spatial scale error MODIS CBERS land class.

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图的伴随多项式的因式分解定理及应用

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数学学报（中文版） 2005年第1期48卷 125-132页

作者：张秉儒青海师范大学数学系西宁810008

我们通过研究Γ-型图簇的伴随多项式的因式分解,证明了这些图簇的补图的色等价图的结构性质和非色唯一性.

关键词：伴随多项式图簇非色唯一性色等价图补图定理证明结构性质因式分解

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Climate instability in the Yili region, Xinjiang during the last glaciation

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Chinese Science Bulletin 2000年第17期45卷 1604-1609页

作者： YE Wei, DONG Guangrong, YUAN Yujiang & MA Yingjie1. Xinjiang Institute of Ecology and geography, Chinese Academy of Sciences, Urumqi 830011, china 2. department of geography, Zhejiang normal university, Jinhua 321004, china 3. Institute of Desert Research, Chinese Academy of Sciences, Lanzhou 730000, china 4. Xinjiang Institute of Meteorological Research, Urumqi 830002, china Xinjiang Institute of Ecology and geography Chinese Academy of Sciences Urumqi China department of geography Zhejiang Normal University Jinhua China Institute of Desert Research Chinese Academy of Sciences Lanzhou China Xinjiang Institute of Meteorological Research Urumqi China

The climate is influenced by westerlies year in year out and the aeolian loess is widespread in the Yili region, the Xinjiang Uygur Autonomous Region. Through the study of the loess section with a thickness of 21.5 m, much useful information about climatic change in this region during the last glaciation was gotten. Grain size analysis of loess samples in the section showed that the climatic change in the Yili region was of instability during the last glaciation and similar to those of the North Atlantic Ocean and Greenland. In correspondence with the Heinrich events, the percentage of the size fraction of loess with grain size less than 10 μm decreased in cold stadials in the Yili region. This result suggests that the westerly wind be strengthened during the cold periods. Compared with the stadials, the content of the loess with grain size less than 10 μm was increased in interstadials, which indicated that the strength of the westerly wind was weakened. It is obvious that the climate was instable

关键词： Yili region last glaciation climate instability.

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Iron speciation in cherts from the Laobao Formation,South china:Implications for anoxic and ferruginous deep-water conditions

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Science Bulletin 2010年第Z2期 3189-3196页

作者： CHANG HuaJin 1,2,3,CHU XueLei 3,FENG LianJun 3 &HUANG Jing 3 1School of Life and geography Sciences,qinghai normal university,xining 810008,china 2 Key Laboratory of Tibetan Plateau Environment and Resources,Ministry of Education,xining 810008,china 3Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,china

Cherts in the Laobao Formation in the Silikou section,South china were deposited in terminal Ediacaran *** speciations of iron in cherts,such as pyrite Fe(FeP),HCl-extractable Fe(FeH),and total Fe(FeT),and their interrelationships,are proxies for distinguishing oxic,anoxic but ferruginous,and sulfidic conditions,which is an effective method for studying the terminal Ediacaran ocean *** chert samples from the Laobao Formation,pyrite concentrations are generally low(6%),degree of pyritization(DOP)ranges from china Basin was most likely anoxic and ferruginous,which played a key role in the emergence and evolution of early multicellular life.

关键词： cherts iron species paleoenvironment Ediacaran South china

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Ground water hydrochemical characteristics: seawater intruded area in eastern and southern coast of Laizhou Bay

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Journal of Geographical Sciences 2001年第3期11卷 350-355页

作者： ZHANG Zu-lu, JIANG Lu-guang, YANG Li-yuan, QI Yong-hua (department of geography, Shandong normal university, Jinan 250014, china) department of geography Shandong Normal University

Eastern and southern coastal zones of Laizhou Bay are the most representative seawater intruded areas in the world, with two intrusion sources of contemporary seawater and paleobrine. In order to reveal the complicated hydrochemical changing process and the mechanism of fresh groundwater being polluted by saltwater, we conducted long-term observation and hydrochemical analysis at four observing sections of typical salt-fresh water transitional zone. The study indicates that seawater and brine intrusion processes have different hydrochemical features, and that ion exchange and adsorption actions between water and aquifer produce great influence on the intrusion.

关键词： seawater intrusion eastern and southern coastal areas of Laizhou Bay hydrochemical characteristics of groundwater

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关于σ－积的一些性质

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四川大学学报（自然科学版） 1994年第2期31卷 163-167页

作者：戴保华青海师大数学系

证明了三个关于σ－集体正规、σ－可膨胀和σ－亚可膨胀的σ－积定理。

关键词： σ-集体正规 σ-可膨胀 σ-积

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EVOLUTION OF SHORELINES ALONG THE NORTH BANK OF HANGZHOU BAY DURING THE LATE STAGE OF THE HOLOCENE TRANSGRESSION

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Science china Chemistry 1989年第3期32卷 347-360页

作者：严钦尚邵虚生 department of geography East China Normal University Shanghai

Based upon the analyses of the sedimentary characteristics, the parallelism of longitudinal streams of the netty drainage system in Shanghai coastal plain to the ancient shorelines, the hydrodynamics in the northern bank of the Hangzhou Bay and the distribution of sites of ancient cultural remains, this paper indicates that during the period of 7000—4000 a B. P., the south spit of the Changjiang River mouth developed southward, and only stretched to the nearshore area of Jinshanwei. The southern end of the spit was a compoundrecurved one. In addition, the evolution of the shoreline west of Jinshanwei during the same period is discussed.

关键词： shoreline evolution Hangzhou Bay Holoceoe transgression.

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Models of Numerical Simulating of Multiaquifer in Zhengzhou City, china

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Systems Science and Systems Engineering 2000年第1期10卷 8-15页

作者： GONG Hui\|li\+1,\ LI Men\|lou\+2,\ HU Xin\|li\+2 1.department of geography, Capital normal university, Beijing 100037, china 2.china university of Geosciences, Wuhan 430074, china

In this paper, quasi\|three\|dimensional numerical simulating and optimum management model was established for evaluating and managing groundwater resources in Zhengzhou city. Based on coupling simulating model with planning model, optimum management model of groundwater resources was established. Through controlling the groundwater seepage field, environment problems caused by unreasonable extracting groundwater resources in the studied area were decreased to the minimum level, which supply scientific foundation for groundwater resource management in Zhengzhou city.

关键词： groundwater seepage field quasi\|three\|dimensional numerical simulation optimun management of groundwater resources Zhengzhou city

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Extraction of Non-taxonomic Relation Using Web Search Engine

Extraction of Non-taxonomic Relation Using Web Search Engine

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2010 Third Pacific-Asia Conference on Web Mining and Web-based Application (WMWA 2010)

作者： Fang Tian department of Mechanical Engineering qinghai university xining china Caixia Yuan School of Computer Beijing university of Posts and Telecommunications Beijing china Shengling Geng 1 College of Computer Science Shaanxi normal universitye Xian china 2 department of Computer qinghai normal university xining china Dongliang Wang Dispatching Center qinghai xining Power Supply Company xining china Yumin He Traffic Police Corps department of Public Security of qinghai Province xining china

A simple and domain-independent method is proposed for discovering non-taxonomic relationships between concept *** method evaluates the relations between instance pairs by using their occurrence frequencies in the coo... 详细信息

关键词： semantic relation non-taxonomic relation Web search engine extraction co-occurrence statistics

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The rangeland resources and forage evaluation in Guizhou,china

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贵州科学 1993年第1期 27-37页

作者： Huang Wei-Lian (department of geography, Guizhou normal university)

In natural resources, the forage plant resources are an importantpart of agricultural natural resources, and their contents are widerthan the concept of rangeland resources. The forage plants include notonly herbage but also shrubs and arbors taken in by livestocks. Theyare the cheapest forage for feeding livestocks and serve as the materialbasis for development of livestock industry. As forage plants are akind of living natural resources through long-term natural selectionand artificial cultivation, they contain rich heredity genes and serve

关键词： china Guizhou Rangeland resources Forage evaluation

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