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Bird diversity and waterbird habitat preferences in relation to wetland restoration at Dianchi Lake, south-west China

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Avian Research 2019年第3期10卷 374-385页

作者： Kang Luo Zhaolu Wu Haotian Bai zijiang wang CAS Key Laboratory of Tropical Forest Ecology Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesXishuangbanna 666303Yunnan China Institute of Ecology and Geobotany Yunnan UniversityKunming 650091China Center for Integrative Conservation Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesXishuangbanna 666303YunnanChina University of Chinese Academy of Sciences Beijing 100049China

Background:Restoration projects have been implemented worldwide to mitigate the adverse effects of the loss and degradation of wetland *** research has been carried out on the impacts on birds of wetland restoration and management projects in China. Studies have mainly investigated central or coastal wetlands,while inland wetlands in remote areas have been much less studied. We focused on examining the response of wild birds to wetland restoration in Dianchi Lake,south-west China. Methods: The line transect method was performed at 26 sampling *** of these were in the city,and to acquire all wild bird data 23 plots were located every 2-8 km along the shore of Dianchi Lake, between December 2011 and November *** collected all related bird records by searching the available literature, articles, newspapers and records of birdwatchers to compare species variation before and after implementation of wetland *** measure the relationships between waterbird assemblages and habitat structures, we used canonical correspondence analysis (CCA) to pair the main matrix of bird assemblages with a second matrix of habitat variables. Results: We recorded 182 bird species belonging to 51 families and 17 orders. Of the species, 42 were new records for Kunming City and 20 were new records for Yunnan Province. Ten waterbird species were found to have disappeared from the shore of Dianchi *** results indicated that waterbirds could be divided into four categories based on their habitat preference:synanthropic (wintering gulls), special habitat (shorebirds),semi-natural (wintering coots and ducks) and disturbance-tolerant (resident) ***:Our study is the first to consider the entire wild bird community throughout the year and discuss the species variation before and after wetland restoration projects launched for Dianchi *** habitat requirements of different waterbird groups were detected in our study,suggesting different types

关键词： Dianchi Lake Waterbird Habitat utilization Shorebird Conservation

Decay-like fracture diagnosis of composite insulator based on small sample virtual expansion and radar graph mapping

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High Voltage 2023年第2期8卷 347-357页

作者： Ben Shang Youping Fan Yuqing Zhang Lei Yang zijiang wang Yating Zhang Zian Zeng Jianyi Guo School of Electrical Engineering and Automation Wuhan UniversityWuhanChina College of Electrical Engineering and New Energy China Three Gorges UniversityYichangChina China Electric Power Research Institute WuhanChina

Due to the complexity of test procedures and the high cost of measurements,the mechanism of the decay-like fracture is unclear,which brings hard concepts and the small sample ***,it is intractable to establish accurate data-driven *** solve the above mentioned problems,this paper proposes a data-driven modeling method based on radar graph mapping models and virtual sample generation(Radar-VSG).The main idea of the proposed method is to construct and select the most appropriate input features by using radar graph mapping,and to generate virtual samples by using the local outlier factor based on the isometric feature mapping algorithm(Isomap-LOF).To verify the effectiveness of our approach,a set of 27 training samples and 127 testing samples from China Southern Power Grid was *** results suggested the accuracy was up to 100%after adding more than 27 virtual samples,with a 4.75%*** the model has the best generalisation ability for 270 virtual samples,with the root mean square error of *** with support vector machine and four advanced VSG methods,the proposed Radar-VSG can achieve better performance.

关键词： mapping virtual fracture

Metallogenic mechanisms of super-large Cu and Au deposits in the Dexing region and simulating experiments

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Chinese Journal Of Geochemistry 2010年第1期29卷 1-14页

作者： WU Xueyi and wang zijiang The State Key Laboratory of Ore Deposit Geochemistry,Institute of Geochemistry,Chinese Academy of Sciences,Guiyang 55002,China The State Key Laboratory of Ore Deposit Geochemistry Institute of Geochemistry Chinese Academy of Sciences Guiyang China

Based on the results of previous studies and under the direction of the theory of "ore deposit genesis",the authors made use of high temperature and high pressure experimental facilities and conditions at the Tectono-geochemistry Research Room under the State Key Laboratory of Ore Deposit Geochemistry,Institute of Geochemistry,Chinese Academy of Sciences,and put the focus on the multi-source of tectonically controlling ore-forming materials,the characteristics of multi-stage and multi-episode hydrothermal activities and mineralization and the characteristics of multi-genesis and multi-ore deposition so as to shed light on the metallogenic mechanisms of super-large Cu and Au *** addition simulating experiments were made on multi-stage and multi-episode tectonic activities and rock and ore deformation,multi-stage and multi-episode tectonic activities and mobilization and migration of ore-forming materials,and multi-stage and multi-episode tectonic activities and superimposition and enrichment of ore-forming *** experimental results showed that under the action of multi-stage and multi-episode tectonic stress the deformation and fragmentation of not only rocks and ores have been intensified,and but also the ore-forming materials originally disbursed in the rocks and ores have been mobilized and migrated and superimposed and *** experimental results also provided the scientific experimental data and grounds for deep-going research on the rules of metallogenesis and geneses of super-large ore deposits in the Dexing region,Jiangxi Province.

关键词：成矿机制模拟实验德兴地区金矿床超大型构造地球化学成矿物质来源国家重点实验室

The Desert Highway in Tarim Basin A Road of Hope Leading to "The Sea of Death

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China Oil & Gas 1994年第4期1卷 50-51页

作者： wang zijiang(Science & Technology Dept,CNPC) Science & Technology Dept CNPC

The study subjects“Tarim Desert Highway Engineering Project”are divided into seven special subjects and 30 sub-subjects.T he special subjects.-are:route selection,sands protection and control,building materials of road,surface structure and surface stabilization,construction and ma1ntena nce,engineering geology and hydrogeology,hydrogeo-logical analysis of the bridge on Tarim River and its protection facilities,and environmental assessment.

关键词： Crude oil transportation Highway Desert Oil exploration

Analysis of the severe group dust storms in eastern part of Northwest China

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Journal of Geographical Sciences 2002年第3期12卷 357-362页

作者： ZHOU zijiang, wang Xiwen(1. National Meteorological Center, Beijing 100081, China 2. Lanzhou Central MeteorologicalObservatory, Lanzhou 730020, China) National Meteorological Center Beijing China Lanzhou Central Meteorological Observatory Lanzhou China

Based on the available original dust storm records from 60 meteorological stations, we discussed the identification standard of severe dust storms at a single station and constructed a quite complete time series of severe group dust storms in the eastern part of Northwest China in 1954–2001. The result shows that there were 99 severe group dust storms in this region in recent 48 years. The spatial distribution indicates that the Alax Plateau, most parts of the Ordos Plateau and most parts of the Hexi Corridor are the main areas influenced by severe group dust storms. In addition, the season and the month with the most frequent severe group dust storms are spring and April, accounting for 78.8% and 41.4% of the total events respectively. During the past 48 years the lowest rate of severe group dust storms occurred in the 1990s. Compared with the other 4 decades, on the average, the duration and the affected area of severe group dust storms are relatively short and small during the 1990s. In 2000 and 2001, there were separately 4 severe group dust storms as the higher value after 1983 in the eastern part of Northwest China.

关键词： eastern part of Northwest China severe group dust storms temporal and spatial distribution characteristics

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骨质疏松症与骨关节炎的相关性研究新进展

中国骨质疏松杂志 2014年第3期20卷 310-314页

作者：王子江向川山西医科大学第二临床医院山西太原030001

近10多年来,骨质疏松症与骨关节炎的相关性研究取得长足进展。骨质疏松症与骨关节炎在流行病学、发病机制、遗传基因及其他因素方面都有其相关性。本文旨在回顾国内外骨质疏松症与骨关节炎相关方面重要的代表性研究成果,并结合文献进行... 详细信息

近10多年来,骨质疏松症与骨关节炎的相关性研究取得长足进展。骨质疏松症与骨关节炎在流行病学、发病机制、遗传基因及其他因素方面都有其相关性。本文旨在回顾国内外骨质疏松症与骨关节炎相关方面重要的代表性研究成果,并结合文献进行临床观察,总结现有的骨质疏松症与骨关节炎相关性的研究成果,并思考目前研究中存在的价值和问题,努力找出二者相关性研究中需要关注的问题。

关键词：骨质疏松症骨关节炎相关性

±800 kV特高压多端混合直流频率限制器及参数整定

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武汉大学学报（工学版） 2024年第2期57卷 194-200页

作者：喻文翔樊友平王子江武汉大学电气与自动化学院湖北武汉430072

针对异步联网运行后,高水电占比多直流外送云南电网面临的频率失稳风险,采用直流频率限制器(frequency limit controller,FLC)进行故障调频提高系统频率稳定性。分析了FLC对送端电网系统频率稳定性的提升作用机理,提出了反向频差复归模... 详细信息

针对异步联网运行后,高水电占比多直流外送云南电网面临的频率失稳风险,采用直流频率限制器(frequency limit controller,FLC)进行故障调频提高系统频率稳定性。分析了FLC对送端电网系统频率稳定性的提升作用机理,提出了反向频差复归模型的控制逻辑和参数整定方法。为提高FLC的调制效果,通过控制变量仿真分析各环节不同参数对FLC性能的影响,得到±800 kV特高压多端混合直流FLC参数的建议值,即频率死区为0.15 Hz,输出限幅值分别为+20%和-50%,比例环节系数为30,积分环节系数为22.2。采用BPA(Bonneville Power Administration)仿真分析有无FLC功能下的系统响应情况,验证了所提FLC配置方案对提高系统频率稳定性的有效性。可为特高压多端混合直流工程相关调制功能的定值整定提供重要参考和指导。

关键词：特高压多端混合直流直流频率限制器系统频率稳定参数整定送端电网

切削测力仪动力学分析与切削力动态测量误差确定

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厦门水产学院学报 1988年第1期10卷 39-50页

作者：王子江

本文从分析具有普遍性意义的测力仪双自由度振动模式出发，采用复变函数方法求解了与振动模式对应的微分方程组，给出了频率响虚特性ψ(ω)、幅频特性|ψ(ω)|和相频特性φ(ω)的准确表达式。本文还给出了测力仪动态测动态测尾误差的计... 详细信息

本文从分析具有普遍性意义的测力仪双自由度振动模式出发，采用复变函数方法求解了与振动模式对应的微分方程组，给出了频率响虚特性ψ(ω)、幅频特性|ψ(ω)|和相频特性φ(ω)的准确表达式。本文还给出了测力仪动态测动态测尾误差的计算方法，证实了压电式压力仪测力仪测量误差δ压电远远小于位移型测力测量误差δ位移的原因。

关键词：测力仪双自由度误差动态测量动力学分析切削力压电式微分方程组复变函数方法振动模式

基于非线性仿射的风电场电压实时计算和优化方法

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电工技术学报 2024年第13期39卷 3975-3989页

作者：张兆毅胡浩王子江商犇樊友平舒印彪武汉大学电气与自动化学院武汉430072 武汉大学新型电力系统与国际标准研究院武汉430072

该文提出一种基于非线性仿射的风电场电压实时计算和优化方法。首先,以网损和并网电压波动综合最小为目标,建立风电场多时段动态无功优化模型,利用半不变量法分析风电功率不确定性对机端电压的影响,采用改进内点法实现模型的高效求解;其... 详细信息

该文提出一种基于非线性仿射的风电场电压实时计算和优化方法。首先,以网损和并网电压波动综合最小为目标,建立风电场多时段动态无功优化模型,利用半不变量法分析风电功率不确定性对机端电压的影响,采用改进内点法实现模型的高效求解;其次,提出一种非线性仿射方法,快速准确地获得计及风电功率波动后的系统电压状态,并通过计算风机无功调节量来实现系统电压实时优化;再次,设计考虑风电功率对机端电压和并网电压综合影响的事件触发算法,降低风电功率波动平缓时风机的无功控制频率;最后,在我国某实际风电场的仿真试验表明,非线性仿射法能够快速获得系统实时电压状态,电压实时优化方法能够有效地防止机端电压越限并减小并网电压波动。

关键词：多时段动态无功优化非线性仿射变换实时计算和优化事件触发