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| 1 | Estimating forest aboveground biomass using HJ-1 Satellite CCD and ICESat GLAS waveform data显示文摘The ecosystem in northeastern China and the Russian Far East is a hotspot of scientific research into the global carbon balance.Forest aboveground biomass(AGB) is an important component in the land surface carbon cycle.In this study,using forest inventory data and forest distribution data,the AGB was estimated for forest in Daxinganlin in northeastern China by combining charge-coupled device(CCD) data from the Small Satellite for Disaster and Environment Monitoring and Forecast(HJ-1) and Geoscience Laser Altimeter System(GLAS) waveform data from the Ice,Cloud and land Elevation Satellite(ICESat).The forest AGB prediction models were separately developed for different forest types in the research area at GLAS footprint level from GLAS waveform parameters and field survey plot biomass in the Changqing(CQ) Forest Center,which was calculated from forest inventory data.The resulted statistical regression models have a R2=0.68 for conifer and R2=0.71 for broadleaf forests.These models were used to estimate biomass for all GLAS footprints of forest located in the study area.All GLAS footprint biomass coupled with various spectral reflectivity parameters and vegetation indices derived from HJ-1 satellite CCD data were used in multiple regression analyses to establish biomass prediction models(R2=0.55 and R2=0.52 for needle and broadleaf respectively).Then the models were used to produce a forest AGB map for the whole study area using the HJ-1 data.Biomass data obtained from forest inventory data of the Zhuanglin(ZL) Forest Center were used as independent field measurements to validate the AGB estimated from HJ-1 CCD data(R2=0.71).About 80% of biomass samples had an error less than 20 t ha-1,and the mean error of all validation samples is 5.74 t ha-1.The pixel-level biomass map was then stratified into different biomass levels to illustrate the AGB spatial distribution pattern in this area.It was found that HJ-1 wide-swath data and GLAS waveform data can be combined to estimate forest biomass with good precision,and the biomass data can be used as input data for future carbon budget analysis. | GUO ZhiFeng1,CHI Hong1,2 & SUN GuoQing1,3 1State Key Laboratory of Remote Sensing Science,Jointly Sponsored by the Institute of Remote Sensing Applications of Chinese Academy of Sciences and Beijing Normal University,Institute of Remote Sensing Applications,Chinese Academy of Sciences,Beijing 100101,China 2Graduate University of Chinese Academy of Sciences,Beijing 100049,China 3Department of Geography University of Maryland,College Park,MD 20742,USA | 2010 | Science China Earth Sciences2010，53，S1： | 21 |
| 2 | Relationships between δ ^(18)O in summer precipitation and temperature and moisture trajectories at Muztagata, western China显示文摘Based on summer observations of stable isotope of precipitation at Muztagata, western China, during 2002―2003, this paper presents the relationship between δ 18O in precipitation and air temperature, and discusses the effect of moisture transport on δ 18O in precipitation. Results show that air temperature correlates positively with δ 18O in precipitation, and the temperature effect controls the δ 18O of precipitation in this area. The Muztagata region exhibits high δ 18O values in summer precipi-tation, similar to those shown at stations in adjacent regions. According to the results of our model set up to trace the moisture trajectories, the westerlies and local moisture circulation contribute to varia-tions of oxygen isotopes in precipitation. In addition, the impacts of the moisture transport distance, the moisture transport level, and the incursion of the polar air mass also influence the variations of δ 18O in precipitation. The moisture origins and transport mechanisms also contribute to the variation of δ 18O in precipitation at Muztagata. | YU Wusheng1,2, YAO Tandong1,2, TIAN Lide1,2, LI Zhen2, SUN Weizhen2 & WANG Yu2 1. Laboratory of Environment and Process on Tibetan Plateau, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100085, China 2. Key Laboratory of Cryosphere and Environment, Jointly Established by Cold and Arid Regions Environmental and Engi-neering Research Institute and Institute of Tibetan Plateau Research, Chinese Academy of Sciences and Chinese Academy of Meteorological Sciences, China Meteorological Administration, CAS, Lanzhou 730000, China | 2006 | Science China Earth Sciences2006，49，1： | 18 |
| 3 | 1997年全国艾滋病哨点监测报告显示文摘1997年,全国HIV监测哨点共调整为60个,分布在27个省(自治区、直辖市)。性病门诊哨点和长卡哨点中只检出极少数HIV感染者。1997年,在3个暗娼哨点中的检出率约为1%~2%,而1996年同期仅为不到0.5%;在12个吸毒哨点中有7个哨点(包括2个新增哨点)报告了HIV感染者,而在1996年同期8个哨点中有3个哨点报告了感染者。新疆自治区报告了83例(20.8%)感染者,而在前几年同期同一哨点只有32例(8.0%)。在大部分吸毒监测哨点中的静注比例正不断增加或保持一个较高水平。暗娼人群中有60%从不使用避孕套。该监测结果表明,局部地区吸毒者中HIV感染率在不断上升,HIV波及的地区在不断地增多,HIV感染已开始向性乱人群扩散;可引起HIV流行的危险因素在不断增加。 | Department of Disease Control,Ministry of Health,People′s Republic of China 1 Center for AIDS Surveillance,Chinese Academy of Preventive Medicine 2 Group of National HIV Sentinel Surveillance Program (Written by Qu Shuquan 2,Sun Xinhua 1,Zheng X | 1998 | 中国性病艾滋病防治1998，4，4： | 15 |
| 4 | 1996年中国艾滋病哨点监测报告显示文摘我国自1995年开始在23个省(自治区、直辖市)的42个哨点中对性传播疾病(STDs)门诊就诊者、暗娼、吸毒者和长途卡车司机四类人群进行监测,当年监测结果显示,在监测哨点所在的城市中,被监测的STDs门诊就诊者、暗娼、吸毒者和长途卡车司机人群中HIV感染率均很低,但存在广泛传播的危险性。1996年第一轮共监测10085人,发现HIV感染者35例。其中在STDs门诊就诊者中发现HIV感染者1例,在吸毒者中发现HIV感染者34例(其中新疆32例);第二轮监测11909人,发现HIV感染者72例,其中在暗娼人群中发现1例,在吸毒人群中发现71例(其中新疆69例)。1996年监测结果表明,在哨点所在的城市中,尽管被监测的STDs门诊就诊者、暗娼和长途卡车司机人群中HIV感染率仍很低,但我国HIV流行形势已发生改变,HIV感染的流行已不仅仅局限于云南吸毒者中,在其它地区已开始在吸毒者中流行,个别地区该人群中HIV感染率上升很快。 | Department of Disease control.Ministry of Health,People′s Republic of China 1 Center for AIDS Surveillance,Chinese Academy of Preventive Medicine 2 Group of National HIV sentinel surveillance program (Written by Qu Shuquan 2,Sun Xinhua 1,Zheng Xiwen | 1997 | 中国性病艾滋病防治1997，3，5： | 12 |
| 5 | In flight MTF monitoring and compensation for CCD camera on CBERS-02显示文摘In this article, the approach of simulating ideal tarp scene was proposed to determine the MTF for CCD camera on CBERS-02. The MTF acquired from this technique was compared to those from some common methods. MTFs achieved from different approaches were employed to compensate the CCD images based on three restoration algorithms: the iterative method, the Wiener filter and the modified inverse filter (MIF). The two-dimensional MTF was established with the value at frequency 0.5 for 45° directional MTF as the value at its four corners. This article addressed the variations of the restored CCD images with different techniques of constructing two-dimensional MTF, restoring algorithms and determining the in-flight MTFs. Results showed images restored with the MTF determined from the technique of simulating ideal tarp scene represent the real scene best. And the restoration technique based on the MIF would produce better restored images than the other two techniques. This research also demonstrated that the two-dimensional MTF used for restoration should be interpolated under the control of the MTF for 45° axis, rather than by multiplying the cross-orbit MTF with along-orbit MTF. | GU Xingfa1,2,3, LI Xiaoying1,2,4, MIN Xiangjun5, YU Tao1,2, SUN Jijuan5, ZENG Yong1,2,4, XU Hua1,2 & GUO Ding2,6 1. State Key Laboratory of Remote Sensing Science, Jointly Sponsored by the Institute of Remote Sensing Applications of Chinese Academy of Sciences and Beijing Normal University, Beijing 100101, China 2. The Center for National Spaceborne Demonstration, Beijing 100101, China 3. Institut National de la Recherche Agronomique, Climat Sol Environnement, 84914 Avignon, France 4. Graduate University of Chinese Academy of Sciences, Beijing 100039, China 5. China Center for Resource Satellite Data and Application, Beijing 100830, China 6. University of Electronic Science and Technology of China, Chengdu 610054, China | 2005 | Science China(Technological Sciences)2005，48，S2： | 4 |
| 6 | Improvement of a 3D radar backscattering model using matrix-doubling method显示文摘Radiative transfer models have been widely used to simulate the radar backscattering from forested areas. A three-dimensional radar backscatter model of forest canopy developed in previous studies takes full account of spatial position of trees in a forest stand, and the interactions among crown, trunk and ground surface. The model predicted well for the co-polarized backscatter measurements, but underestimated the backscattering for cross-polarization, primarily because only the first-order scattering within tree crowns was considered in the model. The backscattering at cross-polarization depends strongly on multiple scatter- ing within tree crowns. To produce good estimations for cross-polarized component, the matrix-doubling method is employed here to compute multiple-scattering within the crown. The modified model is compared with the original model, and the field forest measurements and AIRSAR data are used for validation of the modified model. The cross-polarization backscattering is improved in different degrees for different crown structures and at different bands. | NI WenJian1,2, GUO ZhiFeng1 & SUN GuoQing3 1 State Key Laboratory of Remote Sensing Science, jointly sponsored by the Institute of Remote Sensing Applications of Chinese Academy of Sciences and Beijing Normal University, Beijing 100101, China 2 Graduate University of Chinese Academy of Sciences, Beijing 100049, China 3 Department of Geography, University of Maryland, College Park, MD 27042, USA | 2010 | Science China Earth Sciences2010，53，7： | 4 |
| 7 | A mechanism for enhanced photocatalytic activity of nano-size silver particle modified titanium dioxide thin films显示文摘Ag-TiO2 nanostructured thin films with silver volume fraction of 0–20% were deposited on silicon and quartz substrates by RF magnetron sputtering and annealed in ambient air at 950°C for 1 h. The phase structure and surface topography of the films were characterized by X-ray diffractometer and transmission electron microscope. Photocatalytic activity of the films was evaluated by light induced degradation of methyl orange (C14H14N3NaO3S) solution using a high pressure mercury lamp as lamp-house. The relation of photocatalytic activity and silver content was studied in detail. It was found that silver content influences phase structure of TiO2 thin films, and silver in the films is metallic Ag (Ag0). With increasing silver content from 0 to 20 vol%, photocatalytic activity of the films increases first and then decreases. A suitable amount (2.5–5 vol%) silver addition can significantly enhance the photocatalytic activity of TiO2 films. The enhanced photocatalytic activity was mainly attributed to the extension of visible light absorption region of the films, the presence of anatase phase, the increase of oxy-gen anion radicals O2? and reactive center of surface Ti3+, and the better separation between electrons and holes on the films surface. | MENG FanMing1,2,3*, LU Fei1,3, SUN ZhaoQi1,3 & Lü JianGuo1,2,4 1 School of Physics and Materials Science, Anhui University, Hefei 230039, China 2 Key Laboratory of Materials Modification by Laser, Ion and Electron Beams (Dalian University of Technology), Ministry of Education, Dalian 116024, China 3 Anhui Key Laboratory of Information Materials and Devices, Anhui University, Hefei 230039, China 4 Department of Physics and Electronic Engineering, Hefei Normal University, Hefei 230061, China | 2010 | Science China(Technological Sciences)2010，53，11： | 4 |
| 8 | Construction of anti-breaking mod-els of the main veins of flue-cured to-bacco leaves and principal component analysis显示文摘 | WANG BY SUN TT ZHANG GS | 2011 | Agricultural Science&Tech-nology2011，12，16： | 1 |
| 9 | Mesomomorphism enhancement of modified side-chain liquid-crystalline polysiloxanes by copolymerization 显示文摘 | SUN Q J ZHANG BY JIA Y G | 2005 | J ournal of Applied Polymer Science2005，97，3： | 1 |
| 10 | The behaviors of human mesenchymal stem cells on the poly(3 -hy droxybutyrate-co-3-hydroxyhexanoate) (PHBHHx) membranes 显示文摘 | Yu BY Chen PY Sun YM | 2008 | Desalination2008，234，13： | 1 |
| 11 | MicroRNA -29a Promotes Pan- creatic Cancer Growth by Inhibiting Tristetraprolin 显示文摘 | Sun XJ Liu BY Yan S | 2015 | Cell Physi- ol Biochem2015，37，2： | 1 |
| 12 | Laparoseopie eholeeysteetomy for treatment of unexpeeted earlystage gallbladder eaneer显示文摘 | Sun CD Zhang BY Wu LQ | 2005 | J Surg Oneol2005，91，4： | 1 |
| 13 | Micrometas- expression in with early-stage cervical cancer 显示文摘 | Wang HY Sun JM Lu HF tases dctected by cytokeratin 19 sentinel lymph nodes of patients | 2006 | Int J Gynecol Canc- er2006，16，2： | 1 |
| 14 | Recurrence rate and risk factors for urinary calculi after extracorporeal shock wave lithotripsy 显示文摘 | Sun BY Lee YH Jiaan BP | 1996 | J Urol1996，156，3： | 1 |
| 15 | Evaluation of hepatoprotective effect of Zhi-Zi-Da-Huang decoction and its two fractions against acute alcohol-induced liver injury in rats 显示文摘 | Wang H Feng F Zhuang BY Sun Y | 2009 | Journal of Ethnopharmacology2009，126，2： | 1 |
| 16 | Neuroprotective effects of transient focal cerebral ischemia in mice 显示文摘 | Lain BY Lo AC Sun X | 2003 | Phtomedicine2003，10，4： | 1 |
| 17 | Event-related and intelligence test performance of 50 patients with epilepsy显示文摘 | Wu X Sun JL Rou BY | 1997 | Clin Electroence phalogr1997，28，1： | 1 |
| 18 | Recurrence rate and risk fac-tors for urinary calculi after extracorporeal shock wave litho-tripsy显示文摘 | Sun BY Lee YH Jian BP | 1996 | J Urol1996，156，： | 1 |
| 19 | Expression of interleukin-2 receptor by activated peripheral blood lymphocytes upregulated by the plasma level of interleukin-2 in patients with recurrent aphthous ulcers显示文摘 | Sun A Chu CT Liu BY | 2000 | Proc Natl Sci Counc Repub Chin B2000，24，3： | 1 |
| 20 | Three immunomarker support vector machines - based prognostic classifiers for stage IB non - small - cell lung cancer 显示文摘 | Zhu ZH Sun BY Ma Y | 2009 | J Clin Oncol2009，27，7： | 1 |
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