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Research advances of SAR remote sensing for agriculture applications: A review

Journal of Integrative Agriculture 2019年第3期18卷 506-525页

作者： LIU Chang-an CHEN Zhong-xin SHAO Yun CHEN Jin-song tuya hasi PAN Hai-zhu Key Laboratory of Agricultural Remote Sensing Ministry of Agriculture/Institute of Agricultural Resources and Regional PlanningChinese Academy of Agricultural SciencesBeijing 100081P.R.China Institute of Remote Sensing and Digital Earth Chinese Academy of SciencesBeijing 100101P.R.China Laboratory of Remote Sensing Information Science Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055P.R.China

Synthetic aperture radar(SAR) is an effective and important technique in monitoring crop and other agricultural targets because its quality does not depend on weather conditions. SAR is sensitive to the geometrical structures and dielectric properties of the targets and has a certain penetration ability to some agricultural targets. The capabilities of SAR for agriculture applications can be organized into three main categories: crop identification and crop planting area statistics, crop and cropland parameter extraction, and crop yield estimation. According to the above concepts, this paper systematically analyses the recent progresses, existing problems and future directions in SAR agricultural remote sensing. In recent years, with the remarkable progresses in SAR remote sensing systems, the available SAR data sources have been greatly enriched. The accuracies of the crop classification and parameter extraction by SAR data have been improved progressively. But the development of modern agriculture has put forwarded higher requirements for SAR remote sensing. For instance, the spatial resolution and revisiting cycle of the SAR sensors, the accuracy of crop classification, the whole phenological period monitoring of crop growth status, the soil moisture inversion under the condition of high vegetation coverage, the integrations of SAR remote sensing retrieval information with hydrological models and/or crop growth models, and so on, still need to be improved. In the future, the joint use of optical and SAR remote sensing data, the application of multi-band multi-dimensional SAR, the precise and high efficient modeling of electromagnetic scattering and parameter extraction of crop and farmland composite scene, the development of light and small SAR systems like those onboard unmanned aerial vehicles and their applications will be active research areas in agriculture remote sensing. This paper concludes that SAR remote sensing has great potential and will play a more significant role in the various fields of agricu

关键词： crop cropland yield soil roughness soil moisture LAI crop height scattering model quantitative remote sensing crop yield estimation SAR

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Comparative analysis of GF-1,HJ-1,and Landsat-8 data for estimating the leaf area index of winter wheat

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Journal of Integrative Agriculture 2017年第2期16卷 266-285页

作者： LI He CHEN Zhong-xin JIANG Zhi-wei WU Wen-bin REN Jian-qiang LIU Bin tuya hasi Key Laboratory of Agri-informatics Ministry of Agriculture/Institute of Agricultural Resources and Regional PlanningChinese Academy of Agricultural Sciences National Meteorological Information Center China Meteorological Administration

Using simultaneously collected remote sensing data and field measurements, this study firstly assessed the consistency and applicability of China high-resolution earth observation system satellite 1 （GF-1） wide field of view （WFV） camera, environment and disaster monitoring and forecasting satellite （H J-l） charge coupled device （CCD）, and Landsat-8 opera- tional land imager （OLI） data for estimating the leaf area index （LAI） of winter wheat via reflectance and vegetation indices （VIs）. The accuracies of these LAI estimates were then assessed through comparison with an empirical model and the PROSAIL radiative transfer model. The effects of radiation calibration, spectral response functions, and spatial resolution on discrepancies in the LAI estimates between the different sensors were also analyzed. The results yielded the following observations：（1） The correlation between reflectance from different sensors is relative good, with the adjusted coefficients of determination （R2） between 0.375 to 0.818. The differences in reflectance are ranging from 0.002 to 0.054. The correlation between VIs from different sensors is high with the R2 between 0.729 and 0.933. The differences in the VIs are ranging from 0.07 to 0.156. These results show the three sensors＇ images can all be used for cross calibration of the reflectance and VIs. （2） The four VIs from the three sensors are all demonstrated to be highly correlated with LAI （R2 between 0.703 and 0.849）. The linear models associated with the 2-band enhanced vegetation index （EVI2）, which feature the highest R2 （higher than 0.746） and the lowest root mean square errors （RMSE）（less than 0.21）, were selected to estimate the winter wheat LAI. The accuracy of the estimated LAI from Landsat-8 was the highest, with the relative errors （RE） of 2.18% and an RMSE of 0.13, while the H J-1 was the lowest, with the RE of 2.43% and the RMSE of 0.15. （3） The inversion errors in the different sensors＇ LAI estimates using the PROSAIL model are small. The accuracy of the GF-1 is the hig

关键词： GF-1 WFV H J-1 CCD Landsat-80LI leaf area index PROSAIL vegetation indices

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Reliability Design and Simulation of a Surface-Mount Temperature Compensation Crystal Oscillator

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Aerospace China 2019年第2期20卷 24-31页

作者： SUI Jianping CUI Wei hasi tuya ZHENG Wenqiang DUAN Youfeng Beijing Institute of Radio Metrology and Measurement Beijing100039

This paper introduces the structure and principle of a surface-mount high-precision temperature compensation crystal oscillator,and specifically describes the reliability design of a quartz-crystal resonator used inside the surface-mount temperature compensation crystal oscillator,the reliability design of surface-mount ceramic base and the reliability design of hybrid micro-assembly.Finally,the thermal and mechanical simulation results and the experimental verification of this surface-mount temperature compensation crystal oscillator are provided,which prove that this crystal oscillator has high reliability.

关键词： temperature compensation crystal oscillator (TCXO) high precision reliability

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木质素与橡胶粉复合改性沥青混合料路用性能研究

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公路工程 2014年第6期39卷 170-174页

作者：哈斯图雅内蒙古通辽市交通运输局内蒙古通辽028000

采用车辙试验、低温弯曲试验、冻融劈裂试验、小梁疲劳试验分别研究了掺加木质素纤维前后橡胶粉改性沥青混合料的路用性能。试验结果表明,橡胶沥青混合料具有较好的高温稳定性,而水稳定性和低温抗裂性略有不足,通过木质素与橡胶粉复配... 详细信息

采用车辙试验、低温弯曲试验、冻融劈裂试验、小梁疲劳试验分别研究了掺加木质素纤维前后橡胶粉改性沥青混合料的路用性能。试验结果表明,橡胶沥青混合料具有较好的高温稳定性,而水稳定性和低温抗裂性略有不足,通过木质素与橡胶粉复配可以提高橡胶沥青混合料的综合路用性能。最后结合工程的经济性和复合改性沥青混合料的综合路用性能,推荐了复合改性沥青混合料的最佳木质素掺量。

关键词：路面工程木质素橡胶改性沥青混合料综合路用性能

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Comprehensive Overview of Populus simonii Research in the Recent Years

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Open Journal of Ecology 2024年第5期14卷 419-434页

作者： Dandan Zhang Faujiah Nurhasanah Ritonga tuya Siqin Runxian Song Zicheng Zhang Mingwei Tang Peilin Sun Wa Gao Heilongjiang Institute of Atomic Energy Harbin China Graduate School Padjadjaran University Bandung Indonesia Key Laboratory of Molecular Epigenetics of the Ministry of Education Northeast Normal University Changchun China

As an important ecological tree species in northern China, Populus simonii plays a crucial role in maintaining ecological balance and promoting environmental sustainability. The academic community has conducted a series of in-depth studies on this species, covering key areas such as genomics, survival mechanisms, and genetic breeding. Through the analysis of the genomic structure and function of P. simonii, we have not only revealed the molecular basis for its adaptation to harsh environments but also identified key genes that promote its growth and resistance to pests and diseases. Furthermore, exploring the survival mechanisms of P. simonii has deepened our understanding of its stress resistance traits, including how it effectively copes with abiotic stresses such as drought, salinization, and heavy metal pollution. In genetic breeding, significant progress has been made through the application of modern biotechnology, improving the growth rate and wood quality of P. simonii and enhancing its environmental adaptability and disease resistance. These research findings have not only enriched our knowledge of the biological characteristics of P. simonii but also provided a solid scientific foundation for its application in ecological restoration, forestry production, and environmental management.

关键词： Breeding Ecological Restoration Genomics Populus simonii Resistance Mechanisms

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蒙医养生观念的发展过程及传承发扬的重要性

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中国蒙医药（蒙） 2024年第1期19卷 4-9页

作者：托雅勇军不详

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内蒙古牧区畜产品销售新渠道建设与优化探究

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安徽农业科学 2024年第9期52卷 203-205,225页

作者：刘小燕图雅内蒙古社会科学院内蒙古呼和浩特010010

畜牧业供给侧结构性改革以来,内蒙古按照“稳羊增牛扩猪禽”发展思路,调整优化生产结构和区域布局,聚焦绿色畜产品生产基地建设、优质畜产品有效供给,在畜产品产量继续提升的同时,销售量也持续增加。草原牧区是内蒙古畜产品主要来源地,... 详细信息

畜牧业供给侧结构性改革以来,内蒙古按照“稳羊增牛扩猪禽”发展思路,调整优化生产结构和区域布局,聚焦绿色畜产品生产基地建设、优质畜产品有效供给,在畜产品产量继续提升的同时,销售量也持续增加。草原牧区是内蒙古畜产品主要来源地,在保障畜产品安全方面发挥着重要作用。目前牧区畜产品在销售渠道环节存在问题,畜产品的销售渠道不足,可供牧户选择的便捷、稳定、多样化的销售渠道比较少,因而影响了畜产品竞争力和收益的提升。牧区畜产品营销需要更具有针对性,把产地市场与消费地市场紧密结合起来,加快由“运牛羊”向“运肉”转变,缩短流通环节,最大程度降低销售成本。牧区畜产品销售渠道需向多元化、组织化、专业化、规模化、规范化的方向发展。

关键词：销售渠道畜产品牧区内蒙古

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试述七味葡萄散在慢性阻塞性肺疾病的应用

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中国蒙医药（蒙） 2024年第3期19卷 62-64页

作者：斯琴其木格布图雅不详

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简述肝包如病的四施治疗

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中国蒙医药（蒙） 2024年第5期19卷 79-82页

作者：陶敖力布图雅不详

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乌审旗地区绵羊主要蠕虫病流行病学调查及驱虫效果比较试验

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内蒙古农业大学学报（自然科学版） 2021年第1期42卷 1-5页

作者：那日苏苏布登格日勒哈斯图雅王永平海鹰米其德哈斯苏荣内蒙古农业大学兽医学院农业农村部动物疾病临床诊疗技术重点实验室呼和浩特010018 鄂尔多斯市乌审旗动物疫病预防控制中心鄂尔多斯017300

为研究乌审旗地区绵羊主要蠕虫病流行病学,以及进一步筛选对优势虫种具有较强驱虫效果的药物,本研究以乌审旗不同苏木镇为试验点,随机采集绵羊新鲜粪便,采用漂浮法、沉淀法和改良麦克马斯特计数法对消化道蠕虫虫卵进行定性与定量检查,... 详细信息

为研究乌审旗地区绵羊主要蠕虫病流行病学,以及进一步筛选对优势虫种具有较强驱虫效果的药物,本研究以乌审旗不同苏木镇为试验点,随机采集绵羊新鲜粪便,采用漂浮法、沉淀法和改良麦克马斯特计数法对消化道蠕虫虫卵进行定性与定量检查,从而掌握本地区绵羊蠕虫病流行情况和优势虫种。在此基础上,选取一定数量的捻转血矛线虫感染率较严重(EPG≥500)的绵羊,给予不同驱虫药,进行驱虫效果对比试验。结果表明,乌审旗地区绵羊消化道寄生虫总感染率为51.42%,其中线虫感染率为44.05%,绦虫感染率为10.76%。对比试验结果表明,氯氢碘柳氨钠注射液、阿维菌素氯氢碘柳氨钠片复方制剂和硝碘酚腈注射液均显示出强大的驱虫效果,尤其对胃捻转血矛线虫的驱杀作用更为突出,而盐酸左旋咪唑片的驱虫效果较差。因此,乌审旗地区绵羊消化道线虫感染率由以前的84%左右显著下降至44%左右,但仍比较严重。硝碘酚腈和氯氰碘柳胺钠能够彻底驱杀目前流行的优势虫种-胃捻转血矛线虫,而左旋咪唑的效果却较差。

关键词：乌审旗绵羊消化道蠕虫流行病学调查驱虫试验

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