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| 1 | Land surface temperature retrieval for arid regions based on Landsat-8 TIRS data:a case study in Shihezi,Northwest China显示文摘Scientific interest in geophysical information about land surface temperature(LST) is ever increasing, as such information provides a base for a large number of applications, including environmental and agricultural monitoring. Therefore, the research of LST retrieval has become a hot topic. Recent availability of Landsat-8 satellite imagery provides a new data source for LST retrieval. Hence, exploring an adaptive method with reliable accuracy seems to be essential. In this study, basing on features of Landsat-8 TIRS thermal infrared channels, we re-calculated parameters in the atmospheric transmittance empirical models of the existing split-window algorithm, and estimated the ground emissivity with the help of the land cover classification map of the study area. Furthermore, a split-window algorithm was rebuilt by virtual of the estimation model of the updated atmospheric transmittance and the ground emissivity, and then a remote sensing retrieval for the LST of Shihezi city in Xinjiang Uygur autonomous region of Northwest China was conducted on the basis of this modified algorithm. Finally, precision validation of the new model was implemented by using the MODIS LST products. The results showed that the LST retrieval from Landsat-8 TIRS data based on our algorithm has a higher credibility, and the retrieved LST is more consistent with the MODIS LST products. This indicated that the modified algorithm is suitable for retrieving LST with competitive accuracy. With higher resolutions, Landsat-8 TIRS data may provide more accurate observation for LST retrieval. | Lei YANG YunGang CAO XiaoHua ZHU ShengHe ZENG GuoJiang YANG JiangYong HE XiuChun YANG | 2014 | Journal of Arid Land2014，6，6： | 17 |
| 2 | Optical nonlinearity and ultrafast dynamics of ion exchanged silver nanoparticles embedded in soda-lime silicate glass显示文摘Ag nanoparticles embedded in soda-lime silicate glass were fabricated by ion-exchange and subse-quently annealing method. Z-scan technique, femtosecond time-resolved optical Kerr effect (OKE) technique and femtosecond pump-probe experiment were used to investigate the effects of laser wavelength and laser pulse duration as well as annealing temperature on the third-order optical nonlinearity and ultrafast dynamics of the composites. It was found that the third-order susceptibility of Ag nanoparticles composite glass measured by 400 nm pulse source is larger than that measured by 800 nm pulse source due to an enhancement effect of local field near surface plasmon resonance of Ag nanoparticles in silicate glass. The third-order optical nonlinearity measured by ns laser source is about two orders of magnitude larger than that measured from fs pulse. The annealing temperature has an important effect on the third-order optical nonlinearity and ultrafast dynamics of the composites. Third-order nonlinear susceptibility up to 10?10 esu and fast relaxation process up to 0.2 ps have been obtained in Ag nanoparticles doped glass. | YANG XiuChun LI ZhiHui LlWeiJie XU JingXian DONG ZhiWei QIAN ShiXiong | 2008 | Chinese Science Bulletin2008，53，5： | 10 |
| 3 | printed electrode immunosensors for Schistosoma japonicum显示文摘 | ZENG Shaohua TIAN Zhi CHE Hongli YANG Huihui CHEN Xiuchun FENG Qimei ZHOU Yunfei ZHANG Shuju WU Zhaoyang WANG Shiping | 2012 | 中南大学学报(医学版)2012，37，6： | 3 |
| 4 | The aboveground biomass of desert steppe and its spatiotemporal variation in western Inner Mongolia显示文摘A precise understanding of the aboveground biomass of desert steppe and its spatio-temporal variation is important to understand how arid ecosystems respond to climate change and to ensure that scarce grassland resources are used rationally. On the basis of 756 ground survey quadrats sampled in western Inner Mongolia steppe in 2005-2011 and remote sensing data from the Moderate Resolution Imaging Spectroradiometer (MODIS)-the normalized difference vegetation index (NDVI) dataset for the period of 2001-2011-we developed a statistical model to estimate the aboveground biomass of the desert steppe and further explored the relationships between aboveground biomass and climate factors. The conclusions are as follows: (1) the aboveground biomass of the steppe in the research area was 5.27 Tg (1 Tg=1012 g) on average over 11 years; between 2001 and 2011, the aboveground biomass of the western Inner Mongolia steppe exhibited fluctuations, with no significant trend over time; (2) the aboveground biomass of the steppe in the research area exhibits distinct spatial variation and generally decreases gradually from southeast to northwest; and (3) the important factor causing interannual variations in aboveground biomass is precipitation during the period from January to July, but we did not find a significant relationship between the aboveground biomass and the corresponding temperature changes. The precipitation in this period is also an important factor influencing the spatial distribution of aboveground biomass (R2 =0.39, P<0.001), while the temperature might be a minor factor (R2 =0.12, P<0.01). The uncertainties in our estimate are primarily due to uncertainty in converting the fresh grass yield estimates to dry weight, underestimates of the biomass of shrubs, and error in remote sensing dataset. | Tian Gao Bin Xu XiuChun Yang YunXiang Jin HaiLong Ma JinYa Li HaiDa Yu | 2013 | Research in Cold and Arid Regions2013，5，3： | 3 |
| 5 | Retrieval Snow Depth by Artificial Neural Network Methodology from Integrated AMSR-E and In-situ Data——A Case Study in Qinghai-Tibet Plateau显示文摘On the basis of artificial neural network (ANN) model, this paper presents an algorithm for inversing snow depth with use of AMSR-E (Advanced Microwave Scanning Radiometer-Earth Observing System (EOS)) dataset, i.e., brightness temperature at 18.7 and 36.5GHz in Qinghai-Tibet Plateau during the snow season of 2002-2003. In order to overcome the overfitting problem in ANN modeling, this methodology adopts a Bayesian regularization approach. The experiments are performed to compare the results obtained from the ANN-based algorithm with those obtained from other existing algorithms, i.e., Chang algorithm, spectral polarization difference (SPD) algorithm, and temperature gradient (TG) algorithm. The experimental results show that the presented algorithm has the highest accuracy in estimating snow depth. In addition, the effects of the noises in datasets on model fitting can be decreased due to adopting the Bayesian regularization approach. | CAO Yungang YANG Xiuchun ZHU Xiaohua | 2008 | Chinese Geographical Science2008，18，4： | 1 |
| 6 | Controlled synthesis of TiO2 mesoporous microspheres via chemical vapor deposition显示文摘 | Hou Junwei Yang Xiuchun Lv Xiaoyi | 2012 | Journal of Alloys and Compounds2012，511，： | 1 |
| 7 | On Fractal Dimension of China's Coastlines显示文摘 | Zhu Xiaohua Cai Yunlong Yang Xiuchun | 2004 | Mathematical Geology2004，36，4： | 1 |
| 8 | Synthesis and characterization of high density and high aspect ratio Ag_2S nanoparticle nanowires from a paired cell method显示文摘Ag_2S nanoparticle nanowires were prepared in a porous anodic aluminum oxide template by a simple paired cell method,and were characterized by XRD,FESEM,HRTEM and EDS.The results showed that the as-prepared nanowires were composed of monoclinic Ag_2S nanoparticles.The nanowire diameters ranged from 165 to 270 nm,and Ag_2S nanoparticles were nearly spherical with diameters of 40 to 60 nm.The paired cell method is simple,low cost and easy to control for the fabrication of high density and high aspect ratio Ag_2S nanoparticle nanowires.A formation mechanism for the nanoparticle nanowires was suggested. | LI XiaoNing YANG XiuChun HAN ShanShan LU Wei HOU JunWei LIU Yan | 2011 | Chinese Science Bulletin2011，56，17： | 1 |
| 9 | Molecularly imprinted polymer as SPE sorbent for selective extraction of melamine in dairy products显示文摘 | YANG Huanghao ZHOU Wenhui GUO Xiuchun | | 0，，02： | 1 |
| 10 | Applicability evaluation of the SWIM at river basins of the black soil region in Northeast China: A case study of the upper and middle Wuyuer River basin显示文摘在这份报纸,我们作为学习区域在东北中国的黑土壤区域选择了 Wuyuer 河盆的中间、上面的活动范围。我们采用了土壤和水综合模型(游泳) 并且用部分关联系数评估了参数敏感。我们在河盆和各种各样的气象站从 1961 ~ 1997 记录的蒸发数据的插头从 Yian 水文学车站基于每日的流量数据校准了并且验证我们的模拟结果。对观察数据的当模特儿的数据的后面的评估,我们在场在黑人的河盆的游泳的适用性玷污区域,并且讨论产生错误和他们的可能的原因。在刻度和确认的时期,每月、每日的流量的 Nash-Sutcliffe 效率(NSE ) 系数是的结果表演不少于 0.71 和 0.55,并且相对错误是不到 6.0% 。把流量比作每天,每月的流量的模拟结果更好。另外,潜在的每月的蒸发的 NSE 系数是不少于 0.81。一起,结果建议校准的游泳能在东北中国的黑土壤区域在每月的规模上在流量的各种各样的模拟分析被利用。相反,模型在从 snowmelt 模仿流量有一些限制并且冻结土壤。同时,当与春天和夏天洪水适用于年时,刺激数据大部分从测量数据背离了。模仿的年度流量比有年度降水的突然的增加的年里的测量数据更加高。然而,模型能够在洪水季节期间在流量复制变化。在摘要,这个模型能为 Wuyuer 的全面管理提供基本水文学信息河盆水环境,和它的申请能潜在地在黑土壤区域被扩大到另外的河盆。 | YANG Zhiyuan GAO Chao ZANG Shuying YANG Xiuchun | 2017 | Journal of Geographical Sciences2017，27，7： | 1 |
| 11 | Molecularly imprinted polymer as SPE sorbent for selective extraction of melamine in dairy products 显示文摘 | HuangHao Yang Wen Hui Zhou XiuChun Guo | 2009 | Talanta2009，15，： | 1 |
| 12 | Molecularly imprinted polymer as SPE sorbent for selective extraction of melamine in dairy products显示文摘 | Yang Huang-hao Zhou Wen-hui Guo Xiuchun | 2009 | Talanta2009，80，2： | 1 |
| 13 | Fabrication, characterization and photocatalytic properties of Ag nanoparticles modified TiO 2 NTs显示文摘 | Qingyao Wang Xiuchun Yang Dan Liu Jianfu Zhao | 2012 | Journal of Alloys and Compounds2012，，： | 1 |
| 14 | On Fractal Dimensions of China’s Coastlines显示文摘 | Zhu Xiaohua Cai Yunlong Yang Xiuchun | 2004 | Mathematical Geology2004，，4： | 1 |
| 15 | On Fractal Dimensions of China's Coastlines 显示文摘 | Zhu Xiaohua Cai Yunlong Yang Xiuchun | 2004 | Mathematical Geology2004，36，4： | 1 |
| 16 | HEAT-SPINNING TECHNOLOGY OF HARMONIC GEAR-CLOSED FLEXSPLINE显示文摘0INTRODUCTIONHarmonicgeardriveisakindofnewstyletransmisionmechanismwhichdependsonelasticdeformationofflexiblemechanismtoachie... | Lu, Xiuchun Yang, Hongqing Jiang, Shiping Li, Weimin Liu, Zhubai | 1999 | Chinese Journal of Mechanical Engineering1999，12，2： | 0 |
| 17 | Pro-apoptotic Effect of Recombinant Anti-HER2 Fusion Protein Scfv/Tbid on Osteosarcoma El0 Cells显示文摘 | Xiuchun Qiu Lequn Shan Sai Ma Zhengang Jl Tongtao Yang Hua Long Yanming Xu Yong Zhou Baoan Ma Angang Yang Qingyu Fan | 2010 | Journal of US-China Medical Science2010，7，4： | 0 |
| 18 | FRACTAL DIMENSION ANALYSIS APPLIED TO THE 7 DRAINAGE BASINS AND THE FLOOD IN CHINA | Yang Xiuchun 1 and Zhu Xiaohua 2 (1. Key Laboratory of Environmental Change and Natural Disaster, Ministry of Education of China and Institute of Resources Science, Beijing Normal University, Beijing 100875 2. College of Environment, Peking University, Beijing 100871, China) ZhuangYan | 2003 | Natural Disaster Reduction in China2003，，1： | 0 |
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