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河西旱区番茄潜叶蛾中肠细菌群落结构多样性

环境昆虫学报 2024年第1期46卷 77-88页

作者：袁伟宁魏玉红周昭旭罗进仓刘月英郭致杰甘肃省农业科学院植物保护研究所兰州730070 甘肃省农业害虫天敌工程研究中心兰州730070

为了分析番茄潜叶蛾Tuta absoluta(Meyrick)不同地理种群中肠内共生菌多样性及相对丰度,本研究通过16S rDNA高通量测序技术分析了番茄潜叶蛾中肠内共生菌多样性及相对丰度,并通过KEGG分析了内共生菌生物群落基因代谢途径差异。结果表明... 详细信息

为了分析番茄潜叶蛾Tuta absoluta(Meyrick)不同地理种群中肠内共生菌多样性及相对丰度,本研究通过16S rDNA高通量测序技术分析了番茄潜叶蛾中肠内共生菌多样性及相对丰度,并通过KEGG分析了内共生菌生物群落基因代谢途径差异。结果表明,酒泉种群的丰富度、多样性、均匀度和进化多样性等方面均相对高于张掖。两个地理种群丰度前2.的中肠细菌分别隶属于放线菌门Acfinobacteria、拟杆菌门Bacteroidetes、厚壁菌门Firmicutes、变形菌门Proteobacteria和疣微菌门Verrucomicrobia,其中均以厚壁菌门和变形菌门细菌相对丰度较高。张掖地理种群相对丰度最高的为沃尔巴克菌属Wolbachia(16.06%),隶属于变形菌门;酒泉地理种群相对丰度最高的为乳杆菌属Lactobacillus(13.75%),隶属于厚壁菌门;两个地理种群相对丰度总和最高且差异最大的为沃尔巴克菌属,张掖地理种群的相对丰度为酒泉地理种群的18.89倍。另外,本研究对微生物群落的33种基因功能进行了预测,主要群落基因功能表现为代谢功能,其中碳水化合物代谢功能最强,且种群间没有显著差异;两个地理种群间代谢功能差异最显著的为异生物降解和代谢功能,以酒泉种群相对较强。总体而言,两个地理种群的中肠细菌多样性差异较小,其中寡养单胞菌属Stenotrophomonas细菌可能与害虫抗性密切相关,沃尔巴克菌属细菌可应用于害虫生物防治,前景良好。

关键词：番茄潜叶蛾细菌群落群落差异地理种群代谢途径

Urban expansion patterns and their driving forces based on the center of gravity-GTWR model:A case study of the Beijing-Tianjin-Hebei urban agglomeration

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Journal of geographical sciences 2020年第2期30卷 297-318页

作者： WANG Haijun ZHANG Bin liu Yaolin liu Yanfang XU Shan {2. Yuntai CHEN Yuchen HONG Song School of resources and Environmental Science Wuhan UniversityWuhan 430079China Key Laboratories of geographic Information Systems Ministry of EducationWuhan UniversityWuhan 430079China Collaborative Innovation Center for Geospatial Information Science Wuhan UniversityWuhan 430079China institute of geographic {2. and natural resources research CASBeijing 100101China china Land Survey and Planning institute Beijing 100035China

research into urban expansion patterns and their driving forces is of great significance for urban agglomeration development planning and *** this paper,we reveal the multi-dimensional characteristics of urban expansion patterns,based on the intensity index of the urban expansion,the differentiation index of the urban expansion,the fractal dimension index,the land urbanization rate,and the center of gravity model,by taking the Beijing-Tianjin-Hebei(Jing-Jin-Ji)urban agglomeration as an *** then build the center of gravity-geographically and temporally weighted regression(GTWR)model by coupling the center of gravity model with the GTWR *** the analysis of the temporal and spatial patterns and by using the center of gravity-GTWR model,we analyze the driving forces of the urban land expansion and summarize the dominant development modes and core driving forces of the Jing-Jin-Ji urban *** results show that:1)Between 1990 and 2.15,the expansion intensity of the Jing-Jin-Ji urban agglomeration showed a down-up-down trend,and the peak period was in *** 2.05,high-speed development took place in Beijing,Tianjin,Baoding,and Langfang;after 2.05,rapid development was seen in Xingtai and Handan.2.Although the barycenter of cities in the Jing-Jin-Ji urban agglomeration has shown a divergent trend,the local interaction between cities has been enhanced,and the driving forces of urban land expansion have shown a characteristic of spatial spillover.3)The spatial development mode of the Jing-Jin-Ji urban agglomeration has changed from a dual-core development mode to a multi-core development mode,which is made up of three functional cores:the transportation core in the northern part,the economic development core in the central part,and the investment core in the southern *** synergistic development between each functional core has led to the multi-core development mode.4)The center of gravity-GTWR model combines the analy

关键词： urban land expansion driving forces center of gravity geographically and temporally weighted regression Jing-Jin-Ji

The relationships between urban-rural temperature difference and vegetation in eight cities of the Great Plains

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Frontiers of Earth Science 2019年第2期13卷 290-302页

作者： Yaoping CUI Xiangming XIAO Russell B DOUGHTY Yaochen QIN Sujie liu Nan LI Guosong zhao Jinwei DONG Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions Henan UniversityKaifeng 475004China Department of Microbiology and Plant Biology Center for Spatial AnalysisUniversity of OklahomaNormanOK 73019USA Ministry of Education Key Laboratory of Biodiversity Science and Ecological Engineering Institute of Biodiversity ScienceFudan UniversityShanghai 200438China institute of geographic {2. and natural resources research Chinese Academy of SciencesBeijing 100101China

Interpreting the relationship between urban heat island (UHI) and urban vegetation is a basis for understanding the impacts of underlying surfaces on UHL The calculation of UHI intensity (UHII) requires observations from paired stations in both urban and rural *** to the limited number of paired meteorological stations,many studies have used remotely sensed land surface temperature,but these time-series land surface temperature data are often heavily affected by cloud cover and other *** factors,together with the algorithm for inversion of land surface temperature,lead to accuracy problems in detecting the UHII,especially in cities with weak *** on meteorological observations from the Oklahoma Mesonet,a world-class network,we quantified the UHII and trends in eight cities of the Great Plains,USA,where data from at least one pair of urban and rural meteorological stations were *** examined the changes and variability in urban temperature,UHII,vegetation condition (as measured by enhanced vegetation index,EVI),and evapotranspiration (ET).We found that both UHI and urban cold islands (UCI) occurred among the eight cities during 2.00-2.14 (as measured by impervious surface area).Unlike what is generally considered,UHII in only three cities significantly decreased as EVI and ET increased (p 1),indicating that the UHI or UCI cannot be completely explained simply from the perspective of the underlying *** vegetative cover (signaled by EVI) can increase ET,and thereby effectively mitigate the *** study station clearly showed that the underlying surface or vegetation affects urban-rural temperature,and that these factors should be considered during analysis of the UHI effect over time.

关键词： urbanization evapotranspiration urban cold island background climate air temperature

Calibration and validation of SiBcrop Model for simulating LAI and surface heat fluxes of winter wheat in the North china Plain

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Journal of Integrative Agriculture 2020年第9期19卷 2206-2215页

作者： CHEN Ying liu Feng-shan TAO Fu-lu GE Quan-sheng JIANG Min WANG Meng zhao Feng-hua Forestry College Fujian Agriculture and Forestry UniversityFuzhou 350002P.R.China china National Engineering research Center of JUNCAO Technology Fujian Agriculture and Forestry UniversityFuzhou 350002P.R.China Key Laboratory of Land Surface Pattern and Simulation Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101P.R.China College of resources and Environment University of Chinese Academy of SciencesBeijing 100049P.R.China College of Crop Science Fujian Agriculture and Forestry UniversityFuzhou 350002P.R.China School of Geography and Tourism Qufu Normal UniversityRizhao 276800P.R.China Key Laboratory of Ecosystem Network Observation and Modeling Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101P.R.China

The accurate representation of surface characteristic is an important process to simulate surface energy and water flux in land-atmosphere boundary *** crop growth model in land surface model is an important method to accurately express the surface characteristics and biophysical processes in ***,the previous work mainly focused on crops in single cropping system,less work was done in multiple cropping *** article described how to modify the sub-model in the SiBcrop to realize the accuracy simulation of leaf area index(LAI),latent heat flux(LHF)and sensible heat flux(SHF)of winter wheat growing in double cropping system in the North china Plain(NCP).The seeding date of winter wheat was firstly reset according to the actual growing environment in the *** phenophases,LAI and heat fluxes in 2.04–2.06 at Yucheng Station,Shandong Province,china were used to calibrate the *** validations of LHF and SHF were based on the measurements at Yucheng Station in 2.07–2.10 and at Guantao Station,Hebei Province,china in 2.09–*** results showed the significant accuracy of the calibrated model in simulating these variables,with which the R2.root mean square error(RMSE)and index of agreement(IOA)between simulated and observed variables were obviously improved than the original *** sensitivities of the above variables to seeding date were also displayed to further explain the simulation error of the SiBcrop ***,the research results indicated the modified SiBcrop Model can be applied to simulate the growth and flux process of winter wheat growing in double cropping system in the NCP.

关键词： winter wheat LAI crop growth model SiBcrop North china Plain latent heat flux sensible heat flux

Bed load transport under different streambed conditions-a field experimental study in a mountain stream

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International Journal of Sediment research 2012年第4期27卷 426-438页

作者： Guo-an YU zhao-yin WANG He Qing HUANG Huai-xiang liu Brendon BLUE Kang ZHANG Key Laboratory of Water Cycle and Related Land Surface Processes Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of Sciences State Key Laboratory of Hydroscience and Engineering Tsinghua University institute of geographic {2. and natural resources research Chinese Academy of Sciences Nanjing Hydraulic research institute School of Environment The University of Auckland Pearl River Hydraulic research institute

Bed load transport in mountain streams is closely linked to streambed *** structures are arrangements of boulders and cobbles deposited during extreme floods,in a stable configuration exhibiting high dissipation of *** experiments were carried out in a mountain stream in Yunnan,southwestern china,studying bed load movement on three typical streambeds,i.e.,with well developed,partially developed,and no *** underwater observation and video-capturing system was designed to observe and measure the movement of bed load *** initiation mode, trajectory,velocity,and acceleration of bed load particles under the three conditions were observed and *** showed that the bed load movement was highly associated with streambed *** well-developed structures,bed load particles moved intermittently through saltation and the bed load transport rate was very *** partially-developed structures most bed load particles moved through saltation but a portion of sediment moved in sliding and *** the case with no streambed structure(plane bed) contact load motion(sliding and rolling) gradually became ***,laminated load motion occurred and became the main component of bed load transport when the flow discharge and incoming sediment load were very *** load motion was a special form of bed load motion with an extremely high *** load transport and streambed structure both acted to dissipate flow energy and were mutually *** rates of bed load transport occurred in the streams with no or poor bed structures,and low bed load transport was associated with well developed *** bed load transport rate was inversely correlated to the degree of streambed development.

关键词： Bed load transport Streambed structure Mountain stream Underwater observation and Video capturing system

A comprehensive survey of bat sarbecoviruses across china in relation to the origins of SARS-CoV and SARS-CoV-2

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National Science Review 2023年第6期10卷 117-130页

作者： Zhiqiang Wu Yelin Han Yuyang Wang Bo liu Lamei zhao Junpeng Zhang Haoxiang Su Wenliang zhao Liguo liu Shibin Bai Jie Dong Lilian Sun Yafang Zhu Siyu Zhou Yiping Song Hongtao Sui Jian Yang Jianwei Wang Shuyi Zhang zhaohui Qian Qi Jin NHC Key Laboratory of Systems Biology of Pathogens Institute of Pathogen Biology Chinese Academy of Medical Sciences and Peking Union Medical College Key Laboratory of Respiratory Disease Pathogenomics Chinese Academy of Medical Sciences and Peking Union Medical College College of Animal Science and Veterinary Medicine Shenyang Agricultural University

SARS-C oV and SARS-C oV-2.have been thought to originate from *** this study,we screened pharyngeal and anal swabs from 13 064 bats collected between 2.16 and 2.2. at 703 locations across china for sarbecoviruses,covering almost all known southern hotspots,and found 146 new bat *** analyses of all available sarbecoviruses show that there are three different lineages—L1 as SARS-CoV-related CoVs(SARSr-CoVs),L2.as SARS-CoV-2.related CoVs(SC2.-CoVs) and novel L-R(recombinants of L1 and L2.—present in Rhinolophus pusillus bats,in the mainland of *** the146 sequences,only four are ***,none belong in the L2.lineage,indicating that circulation of SC2.-C oVs in china might be very *** remaining 142.sequences belong in the L1 lineage,of which YN2.2.B-G shares the highest overall se quence identity with SARS-C oV(95.8 %).The observation suggests endemic circulations of SARSr-CoVs,but not SC2.-CoVs,in bats in *** analysis of the collection sites in this study,together with all published reports,indicates that SC2.-C oVs maybe mainly present in bats of Southeast Asia,including the southern border of Yunnan province,but absent in all other regions within *** contrast,SARSr-CoVs appear to have broader {2. distribution,with the highest genetic diversity and sequence identity to human sarbecoviruses along the southwest border of *** data provide the rationale for further extensive surveys in broader {2.al regions within,and beyond,Southeast Asia in order to find the most recent ancestors of human sarbecoviruses.

关键词： SARS-CoV SARS-CoV-2 bats china origin tracing

The spatial coupling characteristics between the construction of Qingzang National Park Cluster and the sustainable development of local communities

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Geography and Sustainability 2021年第1期2卷 1-11页

作者： Rui Guo Dong Chen Daojing Zhou Baoyin liu Hanchu liu Yannan {2. Yong Sun Jie Fan institutes of Science and Development Chinese Academy of SciencesHaidian DistrictBeijing 100190China University of chinese academy of sciences Shijingshan DistrictBeijing 100049China institute of geographic {2. and natural resources research Chinese Academy of SciencesChaoyang DistrictBeijing 100101China

The development of Qingzang national park cluster is part of china’s efforts to establish a major ecological civi-lization project in the Qingzang Plateau,in line with global sustainable development *** on preliminary scientific investigation and research in the Qingzang Plateau,the construction of the park cluster will include 2. national *** mitigate the conflict between conservation of the national park cluster and the develop-ment of local communities,this study proposes an analysis framework to identify the spatial coupling features between the national park cluster and sustainable development of *** elements were selected to construct the analysis framework,including {2. conditions,geographic location,cultural background,and national *** framework was applied to the 457 township communities within the 2. national *** show the weak influence of the construction of the national park cluster for approximately 304 township communities,without significant spatial coupling traits,while the remaining 153 communities demonstrated significant spatial coupling *** latter townships had developed four types of spatial coupling with na-tional parks,including eco-migrants,transportation hubs,characteristic cultures,and border development,which account for 17.4%,35.3%,19.8%,and 2..5%of the 153 townships respectively.A composite type with more than one spatial coupling feature was also found for 14 communities within the 153 *** provides a reference for policy making towards four major types of interactive modes between townships and the national park construction for the sustainable development of Qingzang Plateau.

关键词： Qingzang Plateau National park(cluster) Community Spatial coupling Sustainable development

Exploring the differential impacts of urban transit system on the spatial distribution of local and floating population in Beijing

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Journal of geographical sciences 2017年第6期27卷 731-751页

作者： zhao Meifeng liu Shenghe QI Wei College of Urban and Environmental Science Tianjin Normal University Tianjin 300387 China institute of geographic {2. and Nature resources research CAS Beijing 100101 China College of resources and Environment University of Chinese Academy of Sciences Beijing 1000 China

The floating population has become the main driver of urban population excessive growth in china＇s mega cities. Urban transit system （UTS） is a significant factor in population spatial distributions within urban areas, especially rapid and high-capacity transit systems. This paper analyzes the causal effects of the extension of expressways and subways between 2.00 and 2.10 in the Beijing Metropolitan Area （BMA）, focusing on the group differences between the local residents and the floating population. Due to the endogeneity of transportation improvements and population growth, Instrumental Variable （IV） regression model is applied to avoid this problem. The results show the local residents increased in the inner suburbs but decreased in the city center, while the floating population increased in the majority areas. IV regression results show that the extension of urban transit systems had statistically significant impacts on population growth across the BMA, The results also show that the extension of urban subway system had more effects on the floating population than the local residents across the BMA. It is mainly caused by the rather low fare of urban subway system. This implies that the excessive subsidy on urban subway system could result in ex- cessive floating population growth and residential differentiation, even residential segregation Hence, it is necessary to plan and design reasonable and scientific urban transit systems in order to advance reasonable population size and promote residential integration. Moreover, the regional analysis shows that the effects of urban transportation improvements on the local residents are not statistically significant in the inner suburbs. It implies that urban transportation improvements had limited effects on inducing people to move to suburban areas and controlling center city＇s population in Beijing. Therefore, it should be stressed the differenti- ated effects of urban transportation improvements on population distr

关键词： urban transit systems (UTS) population spatial distribution causal effects group differences Beijing

新质生产力赋能自然资源高质量管理:逻辑与路径

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自然资源学报 2024年第9期39卷 2011-2028页

作者：金晓斌沈镭黄贤金邓祥征胡守庚柯新利吴志峰赵多平刘晶南京大学地理与海洋科学学院南京210023 中国科学院地理科学与资源研究所北京100101 中国地质大学(武汉)公共管理学院武汉430074 华中农业大学公共管理学院武汉430070 广州大学地理科学与遥感学院广州510006 宁夏大学地理科学与规划学院银川750021 中国矿业大学公共管理学院徐州221116

中国社会经济已由高速增长阶段转向高质量发展阶段,推动自然资源高质量管理已成为关乎国家发展全局的重大问题。加快构建和培育新质生产力,赋能自然资源高质量管理,对于推动实现中国式现代化具有重大现实意义。围绕新质生产力赋能自然... 详细信息

中国社会经济已由高速增长阶段转向高质量发展阶段,推动自然资源高质量管理已成为关乎国家发展全局的重大问题。加快构建和培育新质生产力,赋能自然资源高质量管理,对于推动实现中国式现代化具有重大现实意义。围绕新质生产力赋能自然资源高质量管理的逻辑与路径,邀请来自不同学科领域的相关学者,就“新质生产力”与自然资源管理的逻辑关系、在自然资源管理中的定位与功能、对自然资源管理的启示与要求、促进自然资源高质量管理的重点领域,以及新质生产力应对气候变化与践行“双碳”目标、赋能国土空间治理现代化建设、重塑城乡协调发展新形态、保障粮食安全与助推农业强国建设路径等前沿议题发表观点。旨在深入解析这一议题及相关关键问题的解决路径,探索新质生产力在自然资源管理中的具体应用,为推动自然资源高质量管理、助力中国式现代化建设提供科学参考。综合各位专家的主要观点,以新质生产力推动自然资源高质量管理目标的实现,应特别关注以下关键问题:(1)面向全域、全要素、全过程、多部门协同的自然资源系统管理与机制创新;(2.面向综合保障自然资源安全与强化关键资源供给稳定的新质生产力培育重点领域与路径;(3)面向自然资源高效利用与精准管理的“数智化”新质生产力培育体系建设与实践创新。

关键词：新质生产力自然资源高质量管理机制创新 “数智化”转型