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Possible source and migration pathway for early-summer immigrants of the oriental armyworm, Mythimna separata, arriving in northern Japan

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Journal of Integrative Agriculture 2023年第11期22卷 3474-3488页

作者： Akira OTUKA Tokumitsu NIIYAMA jiang xing-fu Institute for Plant Protection National Agriculture and Food Research OrganizationKoshi 861-1102Japan Akita Plant Protection Station Akita 010-1232Japan Institute of Plant Protection Chinese Academy of Agricultural SciencesBeijing 100193P.R.China

The first generation of the oriental armyworm, Mythimna separata(Walker), arrives every year in northern Japan in mainly late May to early June. Analyses of weather maps suggested that this moth’s immigration source could be eastern China, but the accuracy of those analyses was very limited due to the lack of a current standard trajectory analysis. The management of migratory insect pests such as M. separata benefits from the identification of the migration source(s)and pathway(s) of the pests. The present study provides a trajectory analysis for M. separata. Backward trajectories from trap sites in northern Japan were calculated with the HYSPLIT System developed by the U.S. National Oceanic and Atmospheric Administration, taking the flight speed of M. separata and the limitation of low ambient temperature at flight height into account. The ending times of the moth’s short and long trajectories were set at dusk on the day before and two days before the possible arrival date, respectively. The results suggested two types of possible migration pathway: a multi-step pathway from Northeast China, the Korean Peninsula, and eastern Russia, which are destination areas of the first-generation’s migration, and a direct pathway from seasonal main emigration areas in eastern China such as jiangsu and Shandong provinces. These findings contribute to our understanding of the migration ecology of M. separata and can be used for the development of methods to predict the migration of this insect.

关键词： migration backward trajectory oriental armyworm first generation East Asia

Research on inversion high mining pressure distribution and technology of preventing dynamic disasters by MS monitoring in longwall face

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Journal of Coal Science & Engineering(China) 2009年第3期15卷 252-257页

作者： CHENG Yun-hai jiang fu-xing ZOU Yin-hui School of Mining and Safety Engineering Anhui University of Technology Huainan 232001 China College of Civil and Environmental Engineering University of Science and Technology Beijing Beijing 100083 China State Key Laboratory of Coal Resources and Safe Mining China University of Mining and Technology （Beijing） Beijing 100083 China Chongqing Research Institute China Coal Research Institute Chongqing 400037 China

Under two rock strata combination conditions, over 10,000 microseismic events were received with microseismic location monitoring technology which possessed by the author＇s studying team, used in fully mechanized coal face of Huafeng Mine of Xinwen Coal Mining Group Co., Shandong Province. On the basis of the achievement of the location results, the conclusions were drawn as follows： On the basis of the achievement of 3D strata fracturing situation and the section plane of microseimic events in different areas, the relationship between spatial structure of overlying strata and mining pressure field was found, and we might describe distribution range of dynamic pressure of advance pressure and lateral stress around long face, and range of structure ad-tivation. Quantitative guidance to prevent dynamic disasters was provided. The practice in coal mine got a effective results. According to the FLAG3D soft numerical simulation of diameter drilling hole （the diameter is 300 mm） to relieve pressure in specified geological condition in Huafeng Mine, the right distance of two dirlls is 2.5 m and the right depth is 12 m. The research pro-vided basic guiding and practical experiences for the underground microseismic monitoring and disaster prevention in side slopes or tunnels engineering.

关键词： microseismic monitoring high-precision locating rock cracking mining high pres-sure coal bump demolition of danger

Effect of a near-zero magnetic field on development and flight of oriental armyworm(Mythimna separata)

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Journal of Integrative Agriculture 2021年第5期20卷 1336-1345页

作者： AN Meng-meng ZHANG Lei CHENG Yun-xia Thomas W.SAPPINGTON PAN Wei-dong jiang xing-fu State Key Laboratory for Biology of Plant Disease and Insect Pests Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijing 100193P.R.China Corn Insects and Crop Genetics Research Unit USDA-ARSAmesIA 50011USA Beijing Key Laboratory of Bioelectromagnetics Institute of Electrical EngineeringChinese Academy of SciencesBeijing 100190P.R.China

The geomagnetic field affects all living organisms on the *** this study we investigated the developmental and behavioral effects of rearing Mythimna separata in a near-zero magnetic field(<500 n T)compared to the local geomagnetic field(approximately 50μT).The near-zero magnetic field produced by a Helmholtz coil system significantly lengthened larval and pupal development durations,increased male longevity,and reduced pupal weight,female reproduction,and the relative expression level of the vitellogenin(Vg)gene in newly emerged ***,the near-zero magnetic field had a considerable negative effect on the mating ratio of *** *** addition,the moths in the near-zero magnetic field displayed less flight activity late in the night than those in the Earth's normal geomagnetic field,indicating that the flight rhythm of *** may be affected by the near-zero magnetic *** in magnetic field intensity may have negative effects on the development and flight of oriental armyworm,with consequent additional effects on its migration.

关键词： development flight activity geomagnetic field Mythimna separata near-zero magnetic field

Effects of temperatures on the development and reproduction of the armyworm, Mythimna roseilinea: Analysis using an age-stage, two-sex life table

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Journal of Integrative Agriculture 2018年第7期17卷 1506-1515页

作者： QIN Jian-yang LIU Yue-qiu ZHANG Lei CHENG Yun-xia LUO Li-zhi jiang xing-fu State Key Laboratory for Biology of Plant Diseases and Insect Pests Institute of Plant Protection Chinese Academy of Agricultural Sciences College of Plant Science and Technology Huazhong Agricultural University College of Landscape Architecture Beijing University of Agriculture

The armyworm Mythimna roseilinea（Walker） is a major pest of grain crops in South China. So far little is known about its basic biology and ecology, making prediction of population dynamics difficult. This study examined the relationships of individual development and population growth with temperature based on an age-stage, two-sex life table of M. roseilinea reared on maize in the laboratory at 18, 21, 24, 27 and 30℃. The highest values of net reproductive rate（R_0） and fecundity were observed at 21 and 24℃, respectively. Both the intrinsic rate of increase（r） and finite rate of increase（λ） increased significantly and mean generation time（T） decreased significantly with increasing temperature. M. roseilinea was able to develop, survive and lay eggs at all temperature regimes tested. Development rates of the egg, larval, pupal, as well as the whole pre-oviposition stages had a positive linear relationship with temperature. The calculated development threshold temperatures of egg, larval, pupal, pre-oviposition and total pre-oviposition stages were 13.29, 8.39, 14.35, 7.42, and 12.24℃, respectively, and their effective accumulated temperatures were 63.59, 445.00, 211.11, 89.02, and 698.95 degree-days, respectively. These results provide insight into temperature-based phenology and population ecology of this insect pest and will allow population prediction and management available in the field.

关键词： Mythimna roseilinea life table temperature lower threshold temperature effective accumulated temperature

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爆炸冲击载荷作用下岩石的损伤实验

爆炸与冲击 2009年第3期29卷 275-280页

作者：颜峰姜福兴北京科技大学土木与环境工程学院北京100083

基于声波测试原理,利用RSM-SY5智能型声波仪,对某露天矿围岩在爆破冲击荷载作用下产生的损伤进行了现场实验研究。研究结果表明:爆破冲击荷载对距离爆源7 m范围内的岩石会造成损伤破坏,其损伤程度随着岩石与爆源距离的增大而减小;岩体... 详细信息

基于声波测试原理,利用RSM-SY5智能型声波仪,对某露天矿围岩在爆破冲击荷载作用下产生的损伤进行了现场实验研究。研究结果表明:爆破冲击荷载对距离爆源7 m范围内的岩石会造成损伤破坏,其损伤程度随着岩石与爆源距离的增大而减小;岩体声波速度随着爆破次数的不断增加而逐渐降低,多次爆破对岩石具有损伤累积效应;多次爆破的累积损伤不是单次爆破损伤的简单叠加,具有非线性特性,且距离爆源越近爆破累积损伤效应越明显。

关键词：爆炸力学损伤爆炸载荷岩石损伤度声速累积损伤

综放采场初压阶段顶板稳定性与顶煤放出率关系探讨

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岩土工程学报 2005年第4期27卷 414-417页

作者：史红姜福兴山东科技大学资源与环境工程学院山东农业大学水利学院山东泰安271018 北京科技大学土木学院

初次来压是综放采场矿压控制的重点之一,而顶煤从垮落到放完是一个动态过程,因此建立与顶煤放出率相关的顶板结构的稳定性判断准则是一个重要的理论课题。本文建立了综放采场顶板结构整体变形失稳和局部铰接失稳的力学模型;根据结构稳... 详细信息

初次来压是综放采场矿压控制的重点之一,而顶煤从垮落到放完是一个动态过程,因此建立与顶煤放出率相关的顶板结构的稳定性判断准则是一个重要的理论课题。本文建立了综放采场顶板结构整体变形失稳和局部铰接失稳的力学模型;根据结构稳定理论和强度理论,得到了保持顶板结构整体变形稳定的顶板容许下沉量和保持岩块局部铰接稳定的顶板容许下沉量,通过与顶板回转下沉运动几何状态所决定的顶板下沉量的对比,分析了顶板结构整体变形稳定和岩块局部铰接稳定相统一的力学条件,从而建立与顶煤放出率相关的综放采场顶板稳定性判断准则;结合具体采场实例,给出了与顶煤放出率相关的综放采场顶板稳定性判断曲线和方法,为现场针对不同顶板设计合理的顶煤放出率,从而实现顶板的安全控制提供理论依据。

关键词：综放采场初次来压顶板稳定性顶煤放出率

综放采场上覆厚层坚硬岩层破断规律的分析及应用

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岩土工程学报 2006年第4期28卷 525-528页

作者：史红姜福兴北京科技大学土木与环境学院

根据厚层坚硬岩层的赋存和运动特点,利用基于弹性理论、考虑岩梁体积力的厚层坚硬岩层运动规律的力学判据,给出厚层坚硬岩层运动方式的判断曲线,通过分析厚层坚硬岩层运动方式的影响因素,得出厚层坚硬岩层分层运动的可能性大、层间效应... 详细信息

根据厚层坚硬岩层的赋存和运动特点,利用基于弹性理论、考虑岩梁体积力的厚层坚硬岩层运动规律的力学判据,给出厚层坚硬岩层运动方式的判断曲线,通过分析厚层坚硬岩层运动方式的影响因素,得出厚层坚硬岩层分层运动的可能性大、层间效应明显、关键层的“关键性”下降的结论;通过与传统研究方法的对比和工程实例分析,表明文中厚层坚硬岩层运动规律的力学判据和判断方法可对“关键层”在运动过程中的破断方式进行较准确的预测。

关键词：综放采场厚层坚硬岩层破断规律判断曲线

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用图像处理方法研究非均质材料的声发射

岩土力学 2005年第5期26卷 795-798页

作者：逄焕东姜福兴张兴民山东科技大学土木建筑学院山东泰安271019 北京科技大学土木与环境工程学院北京100083

根据几种不同强度单元的分布构造材料,依据图形变化与受外荷载的亮度对应关系,讨论了材料的受力变化。用图形亮度表示不同均质程度岩石单元的受力、破坏和声发射状态,结果表明:声发射模式与所取门槛值有很大关系。不同检测门槛值得到的... 详细信息

根据几种不同强度单元的分布构造材料,依据图形变化与受外荷载的亮度对应关系,讨论了材料的受力变化。用图形亮度表示不同均质程度岩石单元的受力、破坏和声发射状态,结果表明:声发射模式与所取门槛值有很大关系。不同检测门槛值得到的声发射模式可能不同,通常情况下,材料在接近破坏时声发射的能量会增加很多倍,所以,采用较大门槛值检测声发射事件,并预测岩石的破裂具有可行性。

关键词：变分原理声发射非均质性图形矩阵

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采场覆岩空间结构观点及其应用研究

采矿与安全工程学报 2006年第1期23卷 30-33页

作者：姜福兴北京科技大学土木与环境工程学院北京100083

介绍了采场覆岩空间结构的概念以及基于微地震定位监测技术研究覆岩空间结构的方法.指出了采场覆岩空间结构按照工作面采动边界条件,可以分为“θ”型、“O”型、“S”型和“C”型4类;采区与矿井范围内覆岩空间结构的形式,是由厚层坚硬... 详细信息

介绍了采场覆岩空间结构的概念以及基于微地震定位监测技术研究覆岩空间结构的方法.指出了采场覆岩空间结构按照工作面采动边界条件,可以分为“θ”型、“O”型、“S”型和“C”型4类;采区与矿井范围内覆岩空间结构的形式,是由厚层坚硬顶板、埋深、工作面和采区之间煤柱以及断层煤柱等决定的,是随着开采阶段的不同而变化的.基于观测实例,阐述了微地震定位监测技术用于监测空间结构的形成过程和范围,以及确定底板有无突水危险、高应力场位置与冲击地压预测、导水裂隙带高度、开采上限、防水煤(岩)柱高度等方面的应用.展望了覆岩空间结构学术观点及其研究方法在采矿工程中的应用前景.

关键词：矿山压力上覆岩层岩层空间结构微地震监测矿井灾害