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Journal of Integrative Agriculture 2021年第2期20卷 383-394页

作者： yao feng-mei LI Qin-ying ZENG Rui-yun SHI Si-qi College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049P.R.China Key Laboratory of Computational Geodynamics University of Chinese Academy of SciencesBeijing 100049P.R.China Zhanjiang Meteorological Bureau Guangdong 524000P.R.China

Under the limited cultivated land area and the pursuit of sustainable agricultural development,it is essential for the safety of grain production to study agricultural management approaches on narrowing the winter wheat yield gap and improving nitrogen use efficiency (NUE) in *** this study,DSSAT-CERES-Wheat Model is used to simulate winter wheat yield under different agricultural treatments,and we analyze yield gaps and NUE with different management scenarios at regional scales and evaluate the suitable approaches for reducing yield gap and increasing *** results show that,the potential of narrowing yield gap ranges 300–900 kg ha^(–1) with soil nutrients increase,400–1 200 kg ha^(–1) with sowing date adjustment and 0–400 kg ha^(–1) with planting density increase as well as 700–2 200 kg ha^(–1) with adding nitrogen *** rates of management measures of soil nutrients,sowing date adjusting,planting density,and nitrogen fertilizers are 5–15%,5–15%,0–4%,and 10–20%,*** in nitrogen partial productivity ranges 3–10 kg kg^(–1) for soil nutrients,1–10 kg kg^(–1) for sowing date adjusting,1–5 kg kg^(–1) for planting density increase,and–12–0 kg kg^(–1) for adding nitrogen fertilizers,*** indicates that four treatments can narrow yield gap and improve the NUE in varying degrees,but increasing nitrogen fertilizer leads to the decrease of NUE.

关键词： winter wheat DSSAT Model yield gap nitrogen use efficiency

Dynamic Model of Thermal Fatigue Crack Propagation In 3Cr2W8V Steel

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哈尔滨工业大学学报 1990年第3期22卷 151-154页

作者： Liu Jianhong yao mei feng Xiaozhen He Shiyu (Department of Metals and Technology)

In this paper, the thermal fatigue test data in 3Cr2W8V steel are analyzed numerically. Then, on this basis a formula of thermal fatigue crack propagation rate with respect to stress intensiyt factor range is presented. Finally a dynamic equation of the control parameters for thermal fatigue crack propagationis derived according to evaluating the thermal strain relaxation property of the steel.

关键词：热疲劳裂纹扩展 3Cr2W8V钢动态模型扩展速率

Correlation Analysis of Rice Seed Setting Rate and Weight of 1 000-Grain and Agro-Meteorology over the Middle and Lower Reaches of the Yangtze River,China

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Agricultural Sciences in China 2007年第4期6卷 430-436页

作者： ZHAO Hai-yan yao feng-mei ZHANG Yong XU Bin YUAN Jing HU Ya-nan XU Yin-long Institute of Environment and Sustainable Development in Agriculture Chinese Academy of Agricultural Sciences Beijing 100081 P.R China Graduate University Chinese Academy of Sciences Beijing 100039 P.R.China Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 P.R. China

The purpose of this study is to reveal the effects of historic climate change on rice yield over the middle and lower reaches of the Yangtze River, China, and to better adapt to climate change in the future. This study presents the relation of temperature and precipitation and rice components from 1981 to 2003 at 48 early rice stations and 30 middle rice stations. It focuses on an analysis of three stages： flowering, pre-milk, and late milk. The results show that mean maximum temperature and mean daily precipitation at the stages of flowering and pre-milk are most related to early rice yield. Yield change of middle rice is mainly because of mean precipitation change at the flowering stage. Furthermore, percentage of undeveloped grain increases as mean maximum temperature rises at the flowering stage. Over-precipitation in the reproductive stage is a major reason for reduction in yield of early rice. Consecutive rainfall and continuous high temperature can have negative effects on middle rice yield. Global warming would affect middle rice more seriously than early rice.

关键词： mean maximum temperature mean daily precipitation percentage of undeveloped grain percentage of partially developed grain weight of 1 000-grain

Spectral Reflectance Characteristics of Different Snow and Snow-Covered Land Surface Objects and Mixed Spectrum Fitting

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光谱学与光谱分析 2011年第9期31卷 2499-2502页

作者： ZHANG Jia-hua ZHOU Zheng-ming WANG Pei-juan yao feng-mei Liming Yang Chinese Academy of Meteorological Sciences 13eijing 100081 China Center for Earth Observation and Digital Earth Chinese Academy of Sciences Beijing 100094 China College of Earth Sciences Chinese Academy of Sciences Beijing 100049 China U.S. Geological Survey Center for Earth Resources Observation and Science Sioux Falls South Dakota 57198 USA

The field spectroradiometer was used to measure spectra of different snow and snow-covered land surface objects in Beijing *** result showed that for a pure snow spectrum,the snow reflectance peaks appeared from visible to 800 nm band locations;there was an obvious absorption valley of snow spectrum near 1 030 nm *** with fresh snow,the reflection peaks of the old snow and melting snow showed different degrees of decline in the ranges of 300～1 300,1 700～1 800 and 2 200～2 300 nm,the lowest was from the compacted snow and frozen *** the vegetation and snow mixed spectral characteristics,it was indicated that the spectral reflectance increased for the snow-covered land types(including pine leaf with snow and pine leaf on snow background), due to the influence of snow background in the range of 350～1 300 ***, the spectrum reflectance of mixed pixel remained a vegetation spectral *** the end,based on the spectrum analysis of snow,vegetation,and mixed snow/vegetation pixels,the mixed spectral fitting equations were established,and the results showed that there was good correlation between spectral curves by simulation fitting and observed ones(correlation coefficient R2=0.950 9).

关键词： Snow Snow-covered land surface object Spectral characteristics Spectral fitting

遥感光谱信息提取不同覆盖下植被水分信号的研究进展

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光谱学与光谱分析 2010年第6期30卷 1638-1642页

作者：张佳华李莉姚凤梅中国气象科学研究院遥感与气候信息开放实验室北京100081 中国科学院研究生院地球动力学实验室北京100049

综述了基于遥感光谱信息的植被水分信号提取的研究进展,包括直接利用光谱反射率反演植被水分信息到建立植被水分指数(WI),再发展至利用辐射传输模型来获取植被冠层水分信息。着重评述了针对低植被覆盖条件下的提取其冠层水分信息的方法... 详细信息

综述了基于遥感光谱信息的植被水分信号提取的研究进展,包括直接利用光谱反射率反演植被水分信息到建立植被水分指数(WI),再发展至利用辐射传输模型来获取植被冠层水分信息。着重评述了针对低植被覆盖条件下的提取其冠层水分信息的方法,包括利用冠层生理参数估算植被水分信号;基于去除土壤背景影响的光谱植被水分指数或辐射传输模型估算植被水分信息,以及基于多角度的星-地观测提取稀疏条件下的植被水分信息。最后讨论了针对提取低覆盖植被冠层水分信息方法的可能发展趋势。

关键词：光谱指数植被水分水分指数低覆盖条件调整土壤植被指数辐射传输模型

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卫星遥感藏北积雪分布及影响因子分析

地球物理学报 2008年第4期51卷 1013-1021页

作者：张佳华吴杨姚凤梅中国气象科学研究院遥感与气候信息开放实验室北京100081 浙江省气象信息中心杭州310017 中国科学院研究生院地球科学学院北京100049

利用1993～2004年SSM/I被动微波辐射仪反演的雪深资料,1996～2004年NOAA/AVHRR可见光和红外反演的积雪覆盖面积资料,1966～2003年藏北地区6个地面台站的积雪观测资料来检验卫星资料的可用性。并研究近年来藏北积雪的时空分布和影响因素... 详细信息

利用1993～2004年SSM/I被动微波辐射仪反演的雪深资料,1996～2004年NOAA/AVHRR可见光和红外反演的积雪覆盖面积资料,1966～2003年藏北地区6个地面台站的积雪观测资料来检验卫星资料的可用性。并研究近年来藏北积雪的时空分布和影响因素.结果表明,SSM/I,NOAA/AVHRR和实际观测的积雪资料具一致性.从积雪时间变化看:季节尺度上,藏北地区秋冬季积雪迅速增加,但春季(3～5月)融雪速度不快,呈现正反馈特征;年际尺度上,藏北地区20世纪60年代末期起积雪开始减少,80年代积雪增加,90年代起到2003年积雪总体上减少,呈现出减少—增加—减少趋势.采用小波分析发现积雪振荡周期存在着一个准2～3年,准9年和13年的周期,从20世纪70年代初到90年代中期还有一个5年的周期.积雪空间上看,藏北地区积雪主要集中在东部地区,该区每个冬春年积雪覆盖旬数超过15旬,显著高于西部少雪区,大部分积雪集中在4900～5600 m的高度左右;藏北高原积雪变动的显著区位于藏北中东部的安多和聂荣地区.利用藏北地区1966～2003年的地面温度和降水资料建立回归方程模拟年累积雪日,结果表明模拟值与实测值之间的相关系数达0.74.积雪时空分布受温度、降水等因子影响明显.1998～2003年藏北积雪的减少与全球变暖有关,但降水的减少可能是导致近年来藏北积雪减少的更主要因素.

关键词：积雪 SSM/I资料卫星遥感影响因子藏北地区

Mainchain conformation ordering self-assembly tailored room temperature phosphorescence emission

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Science China Chemistry 2025年第1期68卷 329-336页

作者： Yuzhu Li Yumeng Gao feng Tian Yu Wang Yuan yao Shaoliang Lin Xiang Ma Binbin Xu Shanghai Key Laboratory of Advanced Polymeric Materials Key Laboratory for Ultrafine Materials of Ministry of Education School of Materials Science and Engineering East China University of Science and Technology Shanghai Synchrotron Radiation Facility Shanghai Advanced Research Institute Chinese Academy of Sciences Key Laboratory for Advance Materials and Feringa Noble Prize Scientist Joint Research Centre Frontiers Science for Materiobiology and Dynamic Chemistry School of Chemistry and Molecular Engineering East China University of Science & Technology

Developing organic room-temperature phosphorescence （RTP） materials with a wide range of tunable-emission is significant in expanding the applications of RTP ***,we rationally designed amphiphilic alternating copolymers poly(1,2-bis（4-alkoxyphenyl）ethane-1,2-dione-alt-（ethylene glycol）x)(P（Bz-alt-EGx）) that combined the advantage of alternating benzil and EGxskeleton,and tunable mainchain *** a mainchain conformation ordering assembly （COA） process,P（Bz-alt-EGx） self-assembled into well-defined platelets,and such assemblies emitted blue RTP at ca.425 nm due to the ordered folded-chain conformation and confined *** contrast,traditional self-assembly （TA） of P（Bz-alt-EGx） obtained less ordered aggregates,such as asymmetric worms,vesicles,and rod-like *** resultant less ordered aggregates exhibited yellow-green RTP at ca.550 *** wide-tuning RTP emission in solution （between blue and yellow-green,over125 nm） is realized using the P（Bz-alt-EGx） alternating copolymers under the treatment of different self-assembly *** study uncovers a new strategy to tailor the RTP emission through different self-assembly pathways and holds great promise for the fabrication of advanced optical materials.

关键词： self-assembly conformation ordering alternating copolymer phosphorescence emission

全球及区域模式中陆面过程的地表植被覆盖分类方法

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干旱区地理 2006年第6期29卷 872-877页

作者：姚凤梅张佳华中国科学院研究生院地学院北京100049 中国气象科学研究院北京100081

全球和区域尺度上陆面生态系统与气候密切相关。全球和区域模式的发展对于我们认识气候与陆地生态的变化起到重要作用。在这些模型中,植被覆盖是影响大气-植被间热量、水分和CO2等交换的重要陆面参数。在分析了陆地植被覆盖分类原理基础... 详细信息

全球和区域尺度上陆面生态系统与气候密切相关。全球和区域模式的发展对于我们认识气候与陆地生态的变化起到重要作用。在这些模型中,植被覆盖是影响大气-植被间热量、水分和CO2等交换的重要陆面参数。在分析了陆地植被覆盖分类原理基础上,介绍了目前全球不同植被覆盖分类方案,包括基于地基观测的植被分布、基于生物气候特征的分类方案(如:Holdridge的方案);特别近年来陆面过程试验表明,各种遥感数据源(如:NOAA-AVHRR,EOS-MOD IS,Land-sat-TM)等为我们提供了有利的工具来监测全球植被动态,完善植被分类,并且采用高时空分辨率的全球土地覆盖状况特征,在不同时空尺度揭示植被-大气相互作用。本文分析了代表性的3种基于卫星遥感技术的陆面植被分类方案,分别是BATS(18类)、SIB(9类)、SIB2(12类)和B IOME-BGC(31类)陆地模式的植被覆盖分类方案.最后分析了目前可用于全球植被覆盖分类的新的遥感数据库。

关键词：陆面过程陆面植被覆盖分类遥感信息

基于热红外光谱和微波反演地表温度的研究进展

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光谱学与光谱分析 2009年第8期29卷 2103-2107页

作者：张佳华李欣姚凤梅李先华中国气象科学研究院遥感与气候信息开放实验室北京100081 中国科学院研究生院地球科学院北京100049 上海大学空间遥感与空间信息科学研究中心上海200072

地表温度(LST)是研究地表和大气之间辐射和能量交换以及区域和全球尺度地表物理过程的重要参数。卫星遥感技术在生态环境、水文、气象、地震、军事的应用研究,以及气候模式的辐射过程描述都需要获得准确的LST。光谱中的红外和微波对于探... 详细信息

地表温度(LST)是研究地表和大气之间辐射和能量交换以及区域和全球尺度地表物理过程的重要参数。卫星遥感技术在生态环境、水文、气象、地震、军事的应用研究,以及气候模式的辐射过程描述都需要获得准确的LST。光谱中的红外和微波对于探测LST发挥重要作用。文章综合分析了热红外波谱和微波遥感反演LST的研究进展,包括:利用热红外辐射温度表探测LST的方法,晴空条件下星载传感器的红外通道反演LST的单窗、分裂窗等反演方法,单通道和多通道算法,组分温度的反演方法,单通道多角度法和多通道多角度法,以及地表发射率ε特性研究等。微波可以全天候探测地表,文章分析了被动微波波段遥感反演LST的方法。并对这些方法的优缺点、适用性及应用前景进行了评述。

关键词：热红外微波地表温度遥感反演发射率

Simulation of soil erosion dynamics in grassland ecosystem of semi-arid China using the CENTURY model

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Journal of Geographical Sciences 2000年第3期10卷 81-86页

作者： ZHANG Jia-hua1, FU Cong-bin 1 ,yao feng-mei 2 (1. START, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029 China 2. Beijing Forestry University, Beijing 100083, China)

Soil erosion can cause considerable effect on global natural resources and eco-environment. In the paper, the CENTURY model has been used to simulate soil erosion in Xilin Gol Grassland of Inner Mongolia. The results showed before the 1960s, the soil erosion amount was over 2 kg /m2.a in grassland ecosystem in the study area because no trees had been planted. But after the 1960s the mean annual accumulator C lost from soil organic matter due to soil erosion was only 0.3 kg /m2.a in forest ecosystem. So afforestation has exerted notable effect on decreasing soil erosion amount in Xilin Gol Grassland.

关键词： soil erosion CENTURY model grassland ecosystem semi-arid environment