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chinese Science Bulletin 2010年第24期55卷 2723-2730页

作者： LI RongPing1,2,3, ZHOU GuangSheng1,4 & wang Yu1,3 1 State Key Laboratory of Vegetation and Environmental Change, institute of Botany, chinese academy of sciences, beijing 100093, china 2 institute of atmospheric Environment, china Meteorological Administration, Shenyang 110016, china 3 Graduate University of chinese academy of sciences, beijing 100049, china 4 chinese academy of Meteorological sciences, beijing 100081, china State Key Laboratory of Vegetation and Environmental Change Institute of Botany Chinese Academy of Sciences Beijing 100093 China institute of atmospheric Environment China Meteorological Administration Shenyang 110016 China Graduate University of chinese academy of sciences Beijing 100049 China chinese academy of Meteorological sciences Beijing 100081 China

Based on continuous three-year measurements (from 2004 to 2007) of eddy covariance and related environmental factors, environmental controls on variation in soil respiration (Rs) during non-growing season were explored in a maize agroecosystem in Northeast china. Our results indicated that during non-growing seasons, daily Rs was 1.08-4.08 g CO2 m-2 d-1, and the lowest occurred in late November. The average Rs of non-growing season was 456.06 ± 20.01 g CO2 m-2, accounting for 11% of the gross primary production (GPP) of the growing season. Additionally, at monthly scale, the lowest value of Rs appeared in January or February. From the beginning to the end of non-growing season, daily Rs tended to decrease first, and then increase to the highest. There was a significant quadratic curve relationship between Rs and soil temperature at 10 cm depth when soil temperature was more than 0°C (P china.

关键词：中国东北地区农田生态系统生长季节土壤呼吸环境因素玉米土壤含水量反应

Decrease trend of dust event frequency over the past 200 years recorded in the Malan ice core from the northern Tibetan Plateau

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chinese Science Bulletin 2005年第24期50卷 2866-2871页

作者： wang Ninglian Key Laboratory of Cryosphere and Environment, Cold and Arid Regions Environmental and Engineering Research institute, chinese academy of sciences, Lanzhou 73000, china institute of Tibetan Plateau Research, chinese academy of sciences, beijing 100085, china Key Laboratory of Cryosphere and Environment Cold and And Regions Environmental and Engineering Research Institute Chinese Academy of Sciences Lanzhou 73000 China Institute of Tibetan Plateau Research Chinese Academy of Sciences Beijing 100085 China

By analyses of the dust layers in the Malan ice core from the northern Tibetan Plateau, it was found that dirty ratio in this core might be a good proxy for dust event frequency. The variations in the dirty ratio displayed a de- crease trend over the past 200 years, which implies that dust events became less frequent during the study period. The decrease trend in the variations in dust event frequency might be caused mostly by the natural processes, including increasing precipitation and weakening westerly which might be related with global warming. Furthermore, significant negative correlation was found between the dirty ratio and δ 18O in the Malan ice core. This is highly important for studying the effect of atmospheric dust on climate change.

关键词：青藏高原马伦冰核气候变化扬尘事件发生频率

Progress in studies of the climate of humid period and the impacts of changing precession in early-mid Holocene

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Progress in Natural Science:Materials International 2008年第12期18卷 1459-1464页

作者： Jianbin Huang~a Shaowu wang~a Xinyu Wen~a Bao Yang~b a Department of atmospheric sciences,School of physics,Peking University,beijing 100871,china b Laboratory for Desert and Desertification,Cold and Arid Regions Environmental and Engineering Research institute,chinese academy of sciences,Lanzhou 730000,china [a]Department of atmospheric sciences School of Physics Peking University Beijing 100871 China [b]Laboratory for Desert and Desertification Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences Lanzhou 730000 China

Studies on the climate of humid period and the impacts of changing precession in the early-mid Holocene are reviewed in this paper. High-resolution proxy data indicated that the African Humid Period,strong summer monsoon from the Arabian Sea to South Asia, northward migration of ITCZ (lntertropical Convergence Zone) over the northern South America,and the humid period of china appeared in 10.5-5.5 kaBP,10.0-6.0 kaBP,10.5 5.4 kaBP,and 11.0-8.0 kaBP,*** studies proved that summer inso- lation over the Northern Hemisphere increased following the changes of precession in the early Holocene,which increased the land-sea temperature contrasts,intensified the summer monsoon circulation in the Northern Hemisphere,and finally induced a humid climate over the area under the influence of summer ***,modeling results underestimated the increase of precipitation and the degree of northward extension of monsoon rain belt compared with palaeo-environmental *** discrepancies between the modeling results and the palaeo-environmental data may be associated with the changes of North Atlantic circulation,sea ice and veg- etation ***,climate of the humid period was not stable,in which several droughts were inlaid on centennial *** this review,perspectives for further studies of the climate change of the humid period in the early-mid Holocene are also proposed.

关键词： Holocene Humid period Precession Summer monsoon

Numerical simulation of the upper ocean currents in South china Sea

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Acta Oceanologica Sinica 1995年第3期14卷 305-317页

作者： Li Rongfeng Huang Qizhou and wang Wenzhi(institute of atmospheric physics, chinese academy of sciences, beijing 100080. china)(South china Sea institute of Oceanology, chinese academy of sciences, Guangzhou 510301, china)

The upper ocean currents in the Pacific Ocean are calculated by using an ocean model with higher horizontal resolution. The large current systems in the Pacific Ocean, such as Kuroshio, Oyashio, NEC, SEC, NECC,Califomia Current and East Australia Current, are well simulated. This paper only gives the numerical simulation results of the upper ocean currents of the representative months in four seasons in the South china Sea (SCS). It showsthat the SCS branch of Kuroshio is the most important current in the northem SCS and it is not only the water resourceof the SCS warm current but also a significant part of the overall SCS circulation. There is a relatively strong northeastward flow entering the SCS through the Taiwan Strait throughout the year except for specific months. Some of thenumerical results have been confirmed by the observational evidences.

关键词： Upper ocean current numerical simulation SCS warm current the SCS branch of Kuroshio slope of sealevel

Continuous wavelet transform and discrete multi-resolution analysis of surface fluxes and atmospheric stability

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Progress in Natural Science:Materials International 2006年第4期16卷 403-409页

作者： JIANG Zhaoyang, YU Qiang, wang Tianduo, SUN Xiaomin and ZHANG Renhua Shanghai institute of Plant Physiology and Ecology, chinese academy of sciences, Shanghai 200032, china institute of Geographic sciences and Natural Resources Research, chinese academy of sciences, beijing 100101, china [a]Shanghai institute of Plant Physiology and Ecology Chinese Academy of Sciences Shanghai China [b]institute of Geograhpic sciences and Natural Resources Research Chinese Academy of Sciences Beijing China

Variations of land surface fluxes of sensible heat (H), latent heat (LE), and CO2(F-CO2) obtained from the eddy-co-variance measurements above a winter wheat field from March 30 to April 24, 2001 have been studied at scales ranging from 10 minutes to days. Wavelet transform is used in the analysis of land surface fluxes and atmospheric stability (ξ) calculated from the measurements to reveal the changes in land surface fluxes in hours to days scales. The main results are: (1) Concise and compact information about the fluxes, net radiation (Rn), temperature ( T) and ξ in the scale-time domain are extracted from the data by continuous wavelet analysis, and 1 day, 0.5 day and short-period (shorter than 0.5 day) components are revealed. Continuous wavelet coefficients can be used to characterize periodic components of changes in fluxes and ξ. (2) Discrete-time multi-resolution analysis can be used to concentrate total energy variance of time series of the measurements to a small number of coefficients, plotting the relative energy distribution to get several meaningful characteristics of the data. (3) Under neutral atmospheric conditions, the relative energy distributions of the Haar multi-resolution analysis of the three non-dimensional coefficients ( T/T* , q/q * and c/c * ) display clear similarities.

关键词： atmospheric stability flux continuous wavelet transform multi-resolution wavelet analysis.

TYPHOON DISASTER AND ITS RISK ASSESSMENTIN china

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Natural Disaster Reduction in china 1996年第4期 171-179页

作者： wang zhuo Li Jishun and wang Angsheng(institute of atmospheric physics, chinese academy of sciences, beijing 100029)

On the basis of the typhoon disaster data from 1989 to 1994, this thesisanalyzes the main features of typhoon disaster in china, and makes its risk *** concludes that the typhoon disaster has brought about the most serious damages in Zhejiang and Guangdong Provinces. Generally, typhoon occurs from May to October in china,most from July to September, mainly in August. Annual variation of typhoon disaster is consistent with annual variation of landing typhoon *** the economy development in coastal area,the economic loss of disaster also *** assessment shows that Zhejiang and Guangdong Provinces areprone to high possibility of typhoons, the anti-typhoon disaster ability of Zhejiang and Hainan Provinces is relatively low

关键词： ITS TYPHOON DISASTER AND ITS RISK ASSESSMENTIN china

Long term monitoring of urban subsidence by Permanent Scatterer DInSAR

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Progress in Natural Science:Materials International 2007年第1期17卷 107-111页

作者： TANG Yixian, ZHANG Hong and wang Chao ( The chinese Remote Sensing Satellite Ground Station, chinese academy of sciences, beijing 100086, china State Key Laboratory of Remote Sensing IRSA, chinese academy of sciences, beijing 100101, china) [a]The chinese Remote Sensing Satellite Ground Station Chinese Academy of Sciences Beijing China [b]State Key Laboratory of Remote Sensing IRSA Chinese Academy of Sciences Beijing China

When using differential SAR interferometry (DInSAR) to monitor the surface deformation over a long time scale, it is often strongly affected by the spatial and temporal decorrelations and atmospheric dishomogeneities. The recently developed Permanent Scatterers (PS) technique proposed by Fertti et al. can overcome these difficulties by interpreting time-series of interferometric phase only at coherent point scatterers. In this study, we apply this PS technique using 25 ERS-1/2 scenes from 1992 to 2000 to monitor the subsidence in Suzhou. By using the linear deformation model, the deformation map in Suzhou urban area over the eight years is obtained. And the calculated results are in good agreement with the measurements of leveling.

关键词： Permanent Scatterer differential SAR interferometry urban subsidence.

Fine mapping of two recessive genes TaFLA1 and TaSPL8 controlling flag leaf angle in bread wheat

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The Crop Journal 2024年第4期12卷 1159-1167页

作者： Qiushi wang Jiaxing Bai Hongchun Xiong Yongdun Xie Chaojie wang Jiayu Gu Linshu Zhao Huiyuan Li Jinfeng Zhang Shirong Zhao Yuping Ding Zhengwu Fang huijun Guo Luxiang Liu College of Agriculture Yangtze University/MARA Key Laboratory of Sustainable Crop Production in the Middle Reaches of the Yangtze River(Co-Construction by Ministry and Province)Jingzhou 434000HubeiChina State Key Laboratory of Crop Gene Resources and Breeding/National Engineering Laboratory of Crop Molecular Breeding/CAEA Research and Development Centre on Nuclear Technology Applications for Irradiation Mutation Breeding Institute of Crop SciencesChinese Academy of Agricultural SciencesBeijing 100081China

Flag leaf angle is one of the key target traits in high yield wheat breeding.A smaller flag leaf angle reduces shading and enables plants to grow at a higher density,which increases *** we identified a mutant,je0407,with an 84.34%-89.35%smaller flag leaf angle compared with the wild *** mutant also had an abnormal lamina joint and no ligule or *** analysis indicated that the ligule was controlled by two recessive genes,which were mapped to chromosomes 2AS and *** mutant allele on chromosome 2AS was named Tafla1b,and it was fine mapped to a 1 Mb physical *** mutant allele on chr.2DL was identified as Taspl8b,a novel allele of TaSPL8 with a missense mutation in the second exon,which was used to develop a cleaved amplified polymorphic sequence marker.F3 and F4 lines derived from crosses between Jing411 and je0407 were genotyped to investigate interactions between the Tafla1b and Taspl8b *** with the Tafla1b/Taspl8a genotype had 58.41%-82.76%smaller flag leaf angles,6.4%-24.9%shorter spikes,and a greater spikelet density(0.382 more spikelets per cm)compared with the wild *** with the Tafla1a/Taspl8b genotype had 52.62%-82.24%smaller flag leaf angles and no differences in plant height or spikelet density compared with the wild ***1b/Taspl8b plants produced erect leaves with an abnormal lamina *** two alleles had dosage effects on ligule formation and flag leaf angle,but no significant effect on thousand-grain *** mutant alleles provide novel resources for improvement of wheat plant architecture.

关键词： Wheat Ligule Flag leaf angle Fine mapping Tafla1 Taspl8

THE SOLVABILITY FOR A CLASS OF SINGULARLY PERTURBED QUASI-LINEAR DIFFERENTIAL SYSTEM

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Acta Mathematica Scientia 2008年第3期28卷 495-500页

作者：莫嘉琪王辉林万涛 Department of Mathemtics Anhui Normal University Division of Computational Science E-Institutes of Shanghai Universities at SJTUShanghai 200240China Department of Mathematics Huzhou Teachers'CollegeHuzhou 313000China chinese academy of Meteorological sciences lasg Institute of Atmospheric PhysicsChinese Academy of Sciences

The solvability for a class of singularly perturbed Robin problem of quasilinear differential system is considered. Using the boundary layer corrective method the formal asymptotic solution is constructed. And using t... 详细信息

关键词： Solvability singular perturbation differential system boundary layer

Experiments in numerical modelling of the Pacific sea surface temperature anomalies

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Acta Oceanologica Sinica 1992年第4期11卷 509-524页

作者： Zhang Ronghua and wang Wanqiu institute of atmospheric physics, Academia Sinica, beijing 100080, china institute of atmospheric physics Academia Sinica Beijing 100080 China China

By using the atmosphere-ocean coupled model (CGCM) which is composed of a 2-level global atmospheric general circulation model and a 4-layer Pacific oceanic general circulation model developed in the institute of atmospheric physics of chinese academy of sciences, and two model climatological fields got from the two independent models' numerical integrations respectively, the Pacific sea surface temperature anomalies (SSTA) from 1988 to 1989 are simulated in this paper with observed atmospheric general circulation data and sea surface temperature fields as initial conditions and monthly coupling scheme. In order to remove systematic biases of the model climatological fields, interaction variables between atmosphere and ocean are also corrected simultaneously. The experiments show that the simulation results can be improved effectively if these interaction variables are corrected in spite of the fact that there always exist systematic biases in independent numerical simulations of atmospheric part and oceanic part within CGCM. The basic characteristics of the observed Pacific SSTA in September and October 1988 have been simulated by using the correction scheme, such as the negative SSTA domain in the whole E-quatorial Pacific east to 150°E and the positive SSTA domain in the Western Pacific, the northern subtropical Pacific and nearly the whole Southern Pacific. Further numerical simulations show that the model can simulate not only the SSTA in the Pacific and its seasonal variations but also its interannual changes (for example, La Nino event in the Equatorial Pacific terminated after May 1989) to a certain degree. Furthermore, some problems existing in experiment processes and what we shoud do in the following stage are also discussed and analysed in this paper.

关键词： Experiments in numerical modelling of the Pacific sea surface temperature anomalies SSTA