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Overseas immigration of fall armyworm, Spodoptera frugiperda (Lepidoptera: Noctuidae), invading Korea and Japan in 2019

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Insect Science 2022年第2期29卷 505-520页

作者： Ming-Fei Wu Guo-Jun Qi Hui Chen Jian Ma Jie Liu Yu-Ying Jiang Gwan-Seok lee Akira Otuka Gao Hu College of Plant Protection Nanjing Agricultural UniversityNanjing210095 China Guangdong Provincial key Laboratory of High Technology for Plant Protection/Plant Protection Research Institute Guangdong Academy of Agricultural SciencesGuangzhou510640 China Division of Pest Forecasting China National Agro-Tech Extension and Service CenterBeijing100026 China Department of Agro-food Safety and Crop Protection National Institute of Agricultural SciencesWanju55365 Korea Institute of Agricultural Machinery National Agriculture and Food Research OrganizationTsukuba3058517 Japan

The fall armyworm(FAW),Spodoptera frugiperda(***),spread rapidly in Africa and Asia recently,causing huge economic losses in crop *** armyworm caterpillars were first detected in South Korea and Japan in june ***,the migration timing and path for FAW into the countries were estimated by a trajectory simulation approach implementing the insect's flight *** result showed that FAWs found in both South Korea and Japan were estimated to have come from eastern China by crossing the Yellow Sea or the East China Sea in 10–36 h in three series of *** the first series,FAW moths that arrived on Jeju Island during 22–24 May were estimated to be from Zhejiang,Anhui and Fujian Provinces after 1–2 nights’*** the second series,it was estimated that FAW moths landed in southern Korea and Kyushu region of Japan simultaneously or successively during 5–9 june,and these moths mostly came from Guangdong and Fujian *** FAW moths in the third series were estimated to have immigrated from Taiwan Province onto Okinawa Islands during 19–24 *** these migrations,southwesterly low-level jets extending from eastern China to southern Korea and/or Japan were observed in the northwestern periphery of the western Pacific Subtropical *** results,for the first time,suggested that the overseas FAW immigrants invading Korea and Japan came from eastern and southern *** study is helpful for future monitoring,early warning and the source control of this pest in the two countries.

关键词： Asian migration arena atmospheric circulation Spodoptera frugiperda trajectory analysis windbome insect migration

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Characteristics of U-pattern distribution of high-concentration ^(210)Pb in surface air at central Guizhou,China

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Chinese Science Bulletin 2005年第16期50卷 1750-1755页

作者： WAN Guojiang YANG Wei WANG Shilu WAN Enyuan WU Fengchang S.N.lee WANG Changsheng HUANG Ronggui State key Laboratory of Environmental Geochemistry ChineseAcademy of Sciences Guiyang 550002 China Environmental Measurements Laboratory Department of Homeland Security NY 10014-4811 USA

A better understanding of the variation of 210Pb concentrations in the surface air is the key to trace lake sedimentation and catchment erosion, to establish and vali-date the global diffusion model of contaminants, and to as-sess the impact of natural radiation on the ecological system. Basing on the study progresses of the sedimentation, the at-mospheric model and the unique environmental background in the Yunnan-Guizhou Plateau, and starting from December 20, 2001, we made use of a 500 NE Type aerosol sampler to collect filter samples, once a week in the past consecutive two years, in the surface air at Mt. Guanfeng, Guiyang City, China. Synchronous detailed γ -energy spectrometric obser-vations of 210Pb concentrations at both Chinese and U.S. laboratories have shown that the average monthly 210Pb concentration displays a regular U-patterns distribution of annual variations, with high values appearing in winter and low values in late spring and summer. The average annual 210Pb concentrations are estimated to be 2.77±0.63 mBq/m3, about 4 times the average maximum concentrations reported from quite a number of monitoring stations throughout the world. The possible factors affecting the sources of 210Pb in the surface air in the central part of Guizhou Province are: Release of 222Rn from the U-Ra series enriched in the soils; chemical weathering of carbonate rocks; the exploitation, processing and utilization of coal and phosphorous resources. The principal factor controlling the high 210Pb concentrations in the surface air in the central Guizhou and their annual U-pattern distribution is the release of 222Rn. The average monthly 210Pb concentrations show a good negative power- function relationship with increasing precipitation and also show a good negative linear-function relationship with the rise of air temperature in month grouping. Group No.1 (june to November) reflects a relatively low release of 222Rn from soils in relatively high temperature seasons; Group

关键词：表面空气铅浓度 U模式分布中国贵州

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关于《贵州关岭“6.28”特大滑坡特征和成因机理》一文的商榷

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山地学报 2011年第2期29卷 254-256页

作者：张信宝中国科学院水利部成都山地灾害与环境研究所山地环境演变与调控重点实验室中国科学院地球化学研究所环境地球化学国家重点实验室

就滑坡组成和发生机制,与《贵州关岭'6.28'特大滑坡特征和成因机理》一文作者进行商榷。笔者认为'超压密岩土边坡失稳理论'可以较好的解释大寨滑坡-碎屑流灾害的突然发生。'上硬下软'坡体结构,是大寨滑坡发生的地质基础;强降雨快速入渗... 详细信息

就滑坡组成和发生机制,与《贵州关岭'6.28'特大滑坡特征和成因机理》一文作者进行商榷。笔者认为'超压密岩土边坡失稳理论'可以较好的解释大寨滑坡-碎屑流灾害的突然发生。'上硬下软'坡体结构,是大寨滑坡发生的地质基础;强降雨快速入渗,是导致岩层裂隙和大气突然贯通,负压立即消失,高陡坡体迅即失稳的诱因。

关键词：商榷关岭滑坡超压密岩土边坡失稳

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从技术中心主义到人本主义:智慧城市研究进展与展望

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地理科学进展 2022年第3期41卷 488-498页

作者：郭杰王珺姜璐张虹鸥黄耿志广东省科学院广州地理研究所/广东省遥感与地理信息系统应用重点实验室广州510070 柏林自由大学中国研究中心德国柏林10115 香港城市大学公共政策学院中国香港999077 中山大学地理科学与规划学院广州510275 南方海洋科学与工程广东省实验室(珠海) 广东珠海519082

随着5G网络、物联网、云计算、大数据分析、地理信息系统等新技术的兴起,探索更具包容性和创新潜力的参与式治理,引导高效的技术研发与运用,实现城市“以地方现实为基础、以社会需求为导向”的智慧化转型,已成为国内外城市地理学的重要... 详细信息

随着5G网络、物联网、云计算、大数据分析、地理信息系统等新技术的兴起,探索更具包容性和创新潜力的参与式治理,引导高效的技术研发与运用,实现城市“以地方现实为基础、以社会需求为导向”的智慧化转型,已成为国内外城市地理学的重要与前沿议题。人本主义视角下的智慧城市研究,为地理学者介入这一领域提供了理论工具。不同于技术中心主义将智慧城市视作由数字技术构成的物理空间集合,人本主义强调特定情境下的技术、社会(人文治理)与空间的互动。该视角呼吁对多方行动者参与技术研发、基础设施建设与治理决策的合作互动开展微观研究,以揭示智慧城市的共建过程与地方性驱动机制。论文梳理了国内外人本主义研究的最新进展,认为该视角下的研究仍然沿袭“技术中心”或采用与之对立的“知识中心”立场,而缺少技术—社会互动的视角来理解城市智慧化转型。论文提出未来值得深入探讨的议题,即技术与社会(治理)的共生性、围绕技术研发的社会关系互动复杂性、技术研发与关系互动的语境化分析。探讨以上议题有助于理解智慧城市如何作为一个复杂地域系统,在人与技术的持续互动中发生转型,也可为未来中国相关研究提供理论借鉴。

关键词：智慧城市城市治理技术中心主义人本主义技术—社会协同

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Development and application of ergodicity model with FRCM and FLAR for hydrological process

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Science China(Technological Sciences) 2009年第2期52卷 379-386页

作者： WANG HongRui1, FENG QiLei2, LIN Xin3 & ZENG WenYi4 1 College of Water Science, key Laboratory for Water and Sediment Sciences of the Ministry of Education, Beijing Normal University, Beijing 100875, China 2 School of Science, Beijing Institute of Education, Beijing 100011, China 3 School of Mathematical Sciences, Beijing Normal University, Beijing 100875, China 4 College of Information Science and Technology, Beijing Normal University, Beijing 100875, China College of Water Science Key Laboratory for Water and Sediment Sciences of the Ministry of Education Beijing Normal University Beijing China School of Science Beijing Institute of Education Beijing China School of Mathematical Sciences Beijing Normal University Beijing China College of Information Science and Technology Beijing Normal University Beijing China

In this paper, a new ergodic property analysis model of hydrological process is proposed based on fuzzy-rough c-means clustering (FRCM), autocorrelogram, and fuzzy least absolute regression (FLAR). A precipitation time series (1951―2004) from Shanghai Hydrology Station is then analyzed with the model. The results show that the precipitation time series of April, May, june, and September has er-godic property. We conclude that in the long run, the precipitation of April, May, june, and September will not keep decreasing; it will converge to its mean value in some period.

关键词： hydrological process ergodic autocorrelogram fuzzy-rough c-means clustering fuzzy least absolute regression

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Model Analysis of Fine Particle Pollution in Beijing during the 2008 Olympic Games

Model Analysis of Fine Particle Pollution in Beijing during ...

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第十届全国气溶胶会议暨第六届海峡两岸气溶胶技术研讨会

作者： Meigen Zhang 1 ,Lingyun Zhu 1 ,Yuesi Wang 1 ,Wenqing Liu 2 1 State key Laboratory of Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029, China 2 key Lab of Environmental Optics and Technology,Anhui Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Hefei 230031,China

Concentration distributions of major air pollutants over North China in the period of june-August 2008 were simulated by using a multi-scale air quality modeling system RAMS-CMAQ,and for the evaluation of the model performance,model simulated concentrations of PM2.5,O3 and NOx were compared against observations obtained at 14 stations located in Beijing and its neighboring *** shows that modeled concentrations of PM2.5 and O3 agree with observed ones reasonably well, and the model captures major observed time-spatial variations,while large differences between modeled and simulated NOx values are found and the differences may be primarily due to coarse horizontal resolution of the model system as the model can not reflect the reality of the observation ***,the large differences are also associated with uncertainties in NOx emissions. Emission control was enforced in Beijing and its neighboring areas for the Beijing Olympic *** order to study the impacts of emission control upon PM2.5 and O3 concentrations,their concentrations were recalculated with the emissions without the emission control,and then discussed.

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A numerical study of aerosol effects on Regional precipitation

A numerical study of aerosol effects on Regional precipitati...

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第27届中国气象学会年会大气物理学与大气环境分会场

作者： Yan Yin and Hui Xiao CMA key Laboratory for Atmospheric Physics and Environment Nanjing University of Information Science & Technology,NO.219 Ningliu Road,Nanjing,210044,China

A rainstorm occurred in Shanxi province on june 13,2007 is simulated using the Weather Research and Forecasting（WRF） mesoscale model coupled with the Morrision’s double-moment bulk microphysical *** tests are conducted and compared for different background conditions to understand the response of cloud microphysical processes and precipitation to changes in concentrations of aerosol *** results show that the total rainfall amount is reduced by about 7.3% in the polluted case as compared with the clean case,but a more intensive rainfall rate at the central region of the rained area and a smaller rainfall area are observed in the former case than in the *** is also found that in the polluted case,while the area of moderate rain becomes smaller,the spread of light and heavy rain becomes *** rain also occurs in the polluted case but is absent in the clean *** and snow crystals are the main sources for rain at the surface,and graupel is mainly formed by coagulations between cloud droplets and snow *** the polluted case considered here,higher concentration of aerosol particles leads to smaller size of ice particles,and consequently more numerous particles can be suspended in the air for longer,delaying precipitation formation at the early stage and intensifying that at the later stage.

关键词： Mesoscale numerical simulation Aerosol WRF Microphysical processes

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Distribution of ammonia-oxidizing Betaproteobacteria community in surface sediment off the Changjiang River Estuary in summer

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Acta Oceanologica Sinica 2011年第3期30卷 92-99页

作者： LI Jialin BAI Jie GAO Huiwang LIU Guangxing key Laboratory of Marine Environmental Science and Ecology of Ministry of Education College of Environmental Science and Engineering Ocean University of China Qingdao 266100 China Yantai Institute of Coastal Zone Research Chinese Academy of Sciences Yantai 264003 China

The spatial distribution of ammonia-oxidizing Betaproteobacteria （βAOB） was investigated by FISH （fluorescence in situ hybridization） and DGGE （denaturing gradient get electrophoresis） techniques in the sediment off the Changjiang River Estuary. Sediment samples were collected from eight stations in june before the formation of hypoxia zone in 2006. The abundance of βAOB ranged from 1.87× 10^5 to 3.53×10^5 cells/g of sediment. βAOB abundance did not present a negative correlation with salinity, whereas salinity was implicated as the primary factor affecting nitrification rates. The DGGE profiles of PCR-amplified amoA gene fragments revealed that the βAOB community structure of sample S2 separated from other samples at the level of 40% similarity. The variations in composition ofβAOB were significantly correlated with the salinity, temperature, absorption ability of sediments and TOC. The statistical analysis indicates that theβAOB abundance was a main factor to influence nitrification rates with an influence ratio of 87.7% at the level of 40% biodiversity similarity. Considering the good correlation between βAOB abundance and nitrification estimates, the abundance and diversity of βAOB community could be expected as an indirect index of nitrification activity at the study sea area in summer.

关键词： ammonia-oxidizing Betaproteobacteria (βAOB) diversity abundance nitrification surface sediment Changiiang River Estuarv (CRE)

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针对嵌入式终端安全威胁的电力工控系统自愈体系

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电网技术 2020年第9期44卷 3582-3594页

作者：王宇李俊娥周亮王海翔余文豪卢新岱空天信息安全与可信计算教育部重点实验室(武汉大学) 湖北省武汉市430072 中国电力科学研究院有限公司北京市海淀区100192 国网浙江省电力有限公司电力科学研究院浙江省杭州市310014

可自愈性是任何系统是否具有生存能力的一个重要指标,对智能电网尤其重要。然而,电力工控系统主要考虑通信链路和硬件故障的自愈性,而在应对网络攻击方面缺乏相关研究。电力工控系统智能终端以嵌入式系统为主,因此,文章将网络攻击与物... 详细信息

可自愈性是任何系统是否具有生存能力的一个重要指标,对智能电网尤其重要。然而,电力工控系统主要考虑通信链路和硬件故障的自愈性,而在应对网络攻击方面缺乏相关研究。电力工控系统智能终端以嵌入式系统为主,因此,文章将网络攻击与物理性故障统一考虑,提出了针对嵌入式终端安全威胁的电力工控系统自愈体系。首先,分析重要电网嵌入式终端通信网络环境、自身系统和其承载业务的特点及其脆弱性,并考虑检测所需要的数据源和检测方法,总结电网嵌入式终端可能遭受的网络攻击和故障类型;然后,提出一种检测、隔离与自愈一体化实时联动的主动防御体系,作为电力工控系统自愈体系,并阐述各部分的架构与技术,给出终端和网络协同的隔离策略与自愈策略的制定流程,以报文攻击、泛洪攻击和恶意代码3类主要攻击为例说明了隔离策略与自愈策略的基本思路;最后,预想一种电力工控系统可能遭受的网络攻击场景,给出所提自愈体系在该场景下的工作流程。

关键词：电力工控系统嵌入式终端安全威胁隔离自愈

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利用时空混沌同步进行数字加密通信

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物理学报 2001年第10期50卷 1856-1861页

作者：匡锦瑜邓昆黄荣怀北京师范大学电子学系北京100875

提出一种利用时空混沌同步的计算机网络数字加密通信方案 ,并用软件实现了语音双工实时密码通信 .在该方案中 ,收、发端两个单向耦合映射格点 (OCOML)系统被同一混沌信号所驱动而达到同步 ,其时空混沌输出信号分别用作加密和解密的密钥... 详细信息

提出一种利用时空混沌同步的计算机网络数字加密通信方案 ,并用软件实现了语音双工实时密码通信 .在该方案中 ,收、发端两个单向耦合映射格点 (OCOML)系统被同一混沌信号所驱动而达到同步 ,其时空混沌输出信号分别用作加密和解密的密钥序列 ,OCOML的耦合参数为系统的主密钥 .系统的主要优点是传输效率高 ,便于用软件实现实时通信 ,且通信的安全性获得了改善 .

关键词：数字加密通信时空混沌同步密码系统传输效率通信安全

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