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| 1 | Synchronous estimation of DTM and fractional vegetation cover in forested area from airborne LIDAR height and intensity data显示文摘We proposed a method to separate ground points and vegetation points from discrete return,small footprint airborne laser scanner data,called skewness change algorithm.The method,which makes use of intensity of laser scanner data,is especially applicable in steep,and forested areas.It does not take slope of forested area into account,while other algorithms consider the change of slope in steep forested area.The ground points and vegetation points can be used to estimate digital terrain model(DTM) and fractional vegetation cover,respectively.A few vegetation points which were classified into the ground points were removed as noise before the generation of DTM.This method was tested in a test area of 10000 square meters.A LiteMapper -5600 laser system was used and a flight was carried out over a ground of 700―800 m.In this tested area,a total number of 1546 field measurement ground points were measured with a total station TOPCON GTS-602 and TOPCON GTS -7002 for validation of DTM and the mean error value is -18.5 cm and the RMSE(root mean square error) is ±20.9 cm.A data trap sizes of 4m in diameter from airborne laser scanner data was selected to compute vegetation fraction cover.Validation of fractional vegetation cover was carried out using 15 hemispherical photographs,which are georeferenced to centimeter accuracy by differential GPS.The gap fraction was computed over a range of zenith angles 10° using the gap light analyzer(GLA) from each hemispherical photograph.The R2 for the regression of fractional vegetation cover from these ALS data and the respective field measurements is 0.7554.So this study presents a method for synchronous estimation of DTM and fractional vegetation cover in forested area from airborne LIDAR height and intensity data. | BAO YunFei1,2,CAO ChunXiang1,ZHANG Hao1,CHEN ErXue3,HE QiSheng1,2,HUANG HuaBing1,LI ZengYuan3,LI XiaoWen1,4 & GONG Peng1 1 State Key Laboratory of Remote Sensing Science,jointly sponsored by the Institute for Remote Sensing Applications of Chinese Academy of Sciences and Beijing Normal University,Beijing 100101,China 2 Graduate University of the Chinese Academy of Sciences,Beijing 100049,China 3 Institute of Forest Resource Information Technique,the Chinese Academy of Forestry,Beijing 100091,China 4 Research Center for Remote Sensing and GIS,Department of Geography and Beijing Key Laboratory for Remote Sensing of Environment and Digital Sites,Beijing Normal University,Beijing 100875,China | 2008 | Science China(Technological Sciences)2008，51，S2： | 10 |
| 2 | Detection of the urban heat island in Beijing using HJ-1B satellite imagery显示文摘Satellite images are used extensively in studying the urban heat island(UHI) phenomenon.We evaluated the suitability of thermal infrared(TIR) data from the HJ-1B satellite for detecting UHI using a case study in Beijing.Two modified algorithms for retrieving the land surface temperature(LST) from HJ-1B data were tested.The results were compared with LST images derived from a Landsat TM thermal band and the MODIS LST output.The spatial pattern of UHI generated using HJ-1B data matched well with that produced using TM and MODIS data.Of the two algorithms,the mono-window algorithm performed better but further tests are necessary.With more frequent coverage than TM and higher spatial resolution than MODIS,the HJ-1B TIR data present a unique opportunity to study thermal environments in cities in China and neighboring countries. | YANG Jun1,GONG Peng2,ZHOU JinXing3,HUANG HuaBing2 & WANG Lei2 1 Key Laboratory of Silviculture and Conservation,Ministry of Education,Beijing Forestry University,Beijing 100083,China 2 State Key Laboratory of Remote Sensing Science,jointly sponsored by the Institute of Remote Sensing Applications,Chinese Academy of Sciences and Beijing Normal University,Beijing 100101,China 3 Institute of Desertification Studies,Chinese Academy of Forestry,Beijing 100091 China | 2010 | Science China Earth Sciences2010，53，S1： | 9 |
| 3 | ENSO events and interannual variations of winter sea-ice in the Greenland, the Kara and the Barents Seas显示文摘A number of researches show that ENSO is a phenomenon related not only to interannual variations in the tropical atmosphere and ocean, but also to climatic anomalies in the high latitudes. On the one hand, ENSO results in a teleconnection in the middle-high latitudes; on the other hand, the atmospheric circulation anomalies in the middle-high latitudes play an impor- | Wu, BY Gao, DY Huang, RH | 1997 | Chinese Science Bulletin1997，42，16： | 9 |
| 4 | Analytic EAM Model for the Thermodynamic Properties ofthe Disordered Solid Solution and Ordered Intermetallic Alloys of Iron Aluminides显示文摘A simple analytic embedded atom method for bcc Fe and fcc Al metals is used to calculate thethermodynamic properties of the disordered solid solution and ordered intermetallic alloys of Fe aluminides. The thermodynamic properties, such as the dilute-limit heats of solution, formation enthalpies of disordered solid solutions and intermetallic compounds (Fe3Al in the D03 structuretype, FeAl in the B2 structure type, and Fe13Al3) are in good agreement with the experimentaldata, and with the results calculated using the first principles and Miedema theory. | Hu, WY Zhang, BW Shu, XL Huang, BY | 1999 | Journal of Materials Science & Technology1999，15，4： | 4 |
| 5 | RHEOLOGICAL PROPERTIES OF METAL INVECTION MOLDING BINDER AND FEEDSTOCK显示文摘RHEOLOGICALPROPERTIESOFMETALINVECTIONMOLDINGBINDERANDFEEDSTOCK①LiYimin,QuXuanhui,HuangBaiyun,QiuGuanghanNationalKeyLaboratory... | Li, YM Qu, XH Huang, BY Qiu, GH | 1997 | 中国有色金属学会会刊:英文版1997，7，3： | 2 |
| 6 | TEMstudy of electrochemical cycling-induced damage and disorder in LiCoO2 cathodes for rechargeable lithium batteries 显示文摘 | WANG 1H F JIANG Yl HUANG BY | 1999 | J Electrocbem Soc1999，146，2： | 2 |
| 7 | Investigation on the Microstructure Homogenization in a TiAl Based Alloy Prepared by Elemental Powder Metallurgy显示文摘A Ti-48Al (at. pct) alloy prepared by elemental powder metallurgy (EPM) has been heat treated under various conditions. Through optical and scanning electronic microscopy, EDAX, XRD analysis, and DTA. it was shown that the hot pressed microstructure consisted of α2-Ti3Al and TiAl phases. The cr2-Ti3Al phase was island-like, and had a high stability and heredity in subsequent heat treatments. The supersaturation of Al in the island-Iike α-Ti3Al phase strongly influenced the transformation of α(or α2) to α2/γ lamellar colonies. After a heat treatment at 1380℃ for 0.5 h and 1000℃ for 8 h, a fully lamellar microstructure with a colony size of 50 μm was obtained. This result indicates that a homogeneous composition and an equilibrium microstructure in EPM TiAl-base alloys can only be obtained after heat treatment at temperatures above a transus temperature (Tα). | Liu, Y Huang, BY He, YH Wang, JN | 1999 | Journal of Materials Science & Technology1999，15，6： | 2 |
| 8 | Adult intussusception: diagnosis and clinical relevance显示文摘 | Huang BY Warshauer DM | 2003 | RCNA2003，41，6： | 1 |
| 9 | Particle size characterization of ultrafine tungsten powder 显示文摘 | LIAO J Q HUANG BY | 2001 | International Journal of Refractory Metals and Hard Materials2001，19，2： | 1 |
| 10 | Toxicity from water containing arsenic and fluoride in Xinjiang 显示文摘 | Wang GQ Huang YZ Xiao BY | 1997 | Fluoride1997，30，2： | 1 |
| 11 | Treatment of coking and magnesium ores显示文摘 | ChenT H Huang X M Pan wastewater by using manganese M | 2009 | Journal of Hazardous Materials2009，168，23： | 1 |
| 12 | Toxicity from water containing arsenic and fluoride in xinjiang显示文摘 | Wang GQ Huang YZ Xiao BY | 1997 | Fluoride1997，30，2： | 1 |
| 13 | DNA methylation of PAX1 as a biomarker for oral squamous cell carcinoma显示文摘 | Huang YK Peng BY Wu CY | | 0，，08： | 1 |
| 14 | beta2-adrenergic receptor gene polymorphisms in myasthenia gravis (MG) 显示文摘 | Xu BY Huang D Pirskanen R | 2000 | Clin Exp hn- munol2000，119，1： | 1 |
| 15 | Hydroxyapatite nanoparticles as a novel gene carrier 显示文摘 | SH Zhu BY Huang KC Zhou | 2004 | Journal of Nanoparticle Research2004，6，2： | 1 |
| 16 | Immunocytochemical localization of monoamine oxidase type B in rat liver显示文摘 | Huang YH Jiang M Fu BY | 2008 | Eur J Histochem2008，52，1： | 1 |
| 17 | Hypoxic-ischemic brain injury: imaging findinys from birth to adulthood 显示文摘 | Huang BY Castillo M | 2008 | RadioGraphics2008，28，2： | 1 |
| 18 | Association of choline level and tumor perfusion in brain metastases assessed with proton MR spectroscopy and dynamic susceptibility contrast -enhanced perfusion weighted MRI 显示文摘 | Huang BY Kwock L Castillo M | 2010 | Technol Cancer Res Treat2010，9，： | 1 |
| 19 | Well-differentiatedthyroid carcinoma with concomitant Hashimoto's thy-roiditis present with less aggressive clinical stage and lowrecurrence显示文摘 | Huang BY Hseuh C Chao TC | 2011 | Endocr Pathol2011，22，3： | 1 |
| 20 | Repetitive transcranial magnetic stimulation in combination with citalopram in young patients with first-episode major depressive disor- der:a double-blind,randomized,sham-controlled trial 显示文摘 | Huang ML Luo BY Hu JB | 2012 | Aust N Z J Psychiatry2012，46，3： | 1 |
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