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Holocene Abrupt Climate Shifts and Mid-Holocene Drought Intervals Recorded in Barkol Lake of Northern Xinjiang of China

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Chinese Geographical Science 2008年第1期18卷 54-61页

作者： xue jibin ZHONG Wei ZHAO Yinjuan PENG Xiaoying School of Geography Science South China Normal University Guangzhou 510631 China National Laboratory of Western China＇s Environmental Systems Lanzhou University Lanzhou 730000 China

Study results in this paper have indicated that the Holocene climate in Xinjiang, Northwestem China has been alternating between wet and dry conditions, and was punctuated with a series of abrupt climate shifts. A sediment core taken from Barkol Lake in the northern Xinjiang of Northwest China was analyzed at 1 cm interval for grain-size distribution. Abrupt climate shifts revealed by the grain-size proxy occurred at ca 1.4, 3.0, 4.3, 5.6, 8.0 cal kyr B.E, which were well correlated to both the abrupt shifts recorded in the North Atlantic Ocean （NAO） and the Holocene sea surface temperature （SST） cooling events in the Arabian Ocean. The correlation indicated that the climatic changes in the extreme arid Northwest China were associated with the NAO, probably via the North Atlantic Oscillation-affected westerly winds. The strength and position of westerly winds probably modulated the Siberian-Mongolian high- pressure system （winter monsoon）, and played an important role in climate change of Northwest China. Moreover, an evident drought interval during the middle Holocene was also revealed by grain-size proxy.

关键词： abrupt climate shifts grain size Holocene Barkol Lake Xinjiang

Increasing Anthropogenic Mercury Pollution over the Last 200 Years Revealed by Lagoonal Sediments from Hainan Island,South China

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Chinese Geographical Science 2023年第6期33卷 1127-1140页

作者： LI Yanting xue jibin CHEN Jingqiang LU Yi MA Xinlu School of Geographical Sciences South China Normal UniversityGuangzhou510631China

The toxic heavy metal mercury(Hg)has significantly enhanced the global Hg cycle influenced by human activities over the last *** this study,we presented a high-resolution Hg deposition history between∼1780 and 2015 AD in a sediment core from Xincun Lagoon,located in the southeastern Hainan Island,South China,and analyzed it in conjunction with geochemical elements,grain-size distribution,organic matter,and HYSPLIT backward trajectory *** objective was to investigate the influencing factors affecting historical Hg deposition in relatively remote regions and assess the extent of the effects of natural background and human *** results showed that the Hg in the sediment was deposited primarily through atmospheric deposition,which was closely related to regional and even global human *** Hg contamination increased gradually from the 1830s to 1850s,possibly due to Hg emissions from Opium Wars I and II occurring in southeastern *** broad peaks of anthropogenic Hg were observed during the 1910s to 1950s and in the 1980s,likely associated with the two world wars and modern Chinese *** addition,a further sharp increase in anthropogenic Hg from the mid-1970s to the present occurred,likely originating from the intense industrial activities in China triggered by the reform and opening-up policy of China in 1978 and some countries in Southeast Asia.

关键词： Mercury deposition pollution history anthropogenic impact Xincun Lagoon Hainan,China

A New High-resolution Late Glacial-Holocene Climatic Record from Eastern Nanling Mountains in South China

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Chinese Geographical Science 2009年第3期19卷 274-282页

作者： xue jibin ZHONG Wei ZHENG Yanming MA Qiaohong CAI Ying OUYANG Jun School of Geography South China Normal University Guangzhou 510631 China

A 350-cm-long sediment core sequence from Dahu Swamp situated in the eastern Nanling Mountains was selected for high-resolution paleoclimatic reconstruction since the Late Glacial period. The multi-proxy records of this paper reveal several evidently dry and cold events that may coincide with the Oldest Dryas, the Older Dryas, the Younger Dryas in the late deglacial period. Two relatively wetter and warmer phases occurred in ca. 15,000-14,400 cal yr B.P. and 13,500-12,800 cal yr B.P. respectively may correspond to the Boiling and Allerod warming events. The Younger Dryas event （ca. 12,800-11,500 cal yr B.P.） revealed by multi-proxies was characterized by relatively colder and drier climate. A warmer and wetter climate, occurred in ca. 10,000~5000 cal yr B.P., was consistent with the Holoeene Optimum, which coincided with the maximum Northern Hemisphere insolation. The ＂8.2kyr cool event＂ and even the ＂8.8kyr cool event＂ were indicated as well from our sediment core. A dry mid-Holocene period （ca. 60000 3000 cal yr B.P.） indicated by multi-proxies does not follow the traditional concept of the wet mid-Holocene conditions observed in other regions in China.

关键词： Late Glacial period Holocene climatic record Dahu Swamp South China

A hybrid spatial-temporal deep learning prediction model of industrial methanol-to-olefins process

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Frontiers of Chemical Science and Engineering 2024年第4期18卷 73-85页

作者： jibin Zhou xue Li Duiping Liu Feng Wang Tao Zhang Mao Ye Zhongmin Liu National Engineering Research Center of Lower-Carbon Catalysis Technology Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China Yulin Innovation Institute for Clean Energy Clean Energy Innovation Institute of Chinese Academy of SciencesYulin 719053China xuelang Industrial Intelligence Technology Co. Ltd.Wuxi 214000China

Methanol-to-olefins,as a promising non-oil pathway for the synthesis of light olefins,has been successfully *** accurate prediction of process variables can yield significant benefits for advanced process control and *** challenge of this task is underscored by the failure of traditional methods in capturing the complex characteristics of industrial processes,such as high nonlinearities,dynamics,and data distribution shift caused by diverse operating *** this paper,we propose a novel hybrid spatial-temporal deep learning prediction model to address these ***,a unique data normalization technique called reversible instance normalization is employed to solve the problem of different data ***,convolutional neural network integrated with the self-attention mechanism are utilized to extract the temporal ***,a multi-graph convolutional network is leveraged to model the spatial ***,the extracted temporal and spatial features are fused as input into a fully connected neural network to complete the ***,the outputs are denormalized to obtain the ultimate *** monitoring results of the dynamic trends of process variables in an actual industrial methanol-to-olefins process demonstrate that our model not only achieves superior prediction performance but also can reveal complex spatial-temporal relationships using the learned attention matrices and adjacency matrices,making the model more ***,this model is deployed onto an end-to-end Industrial Internet Platform,which achieves effective practical results.

关键词： methanol-to-olefins process variables prediction spatial-temporal self-attention mechanism graph convolutional network

维普期刊数据库评论

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中国环境影响评价立法与战略环境评价制度

学术研究 2007年第9期 105-110页

作者：薛继斌浙江大学经济学院

环境影响评价是对环境质量的预测性评估,是在进行某项决议或人为活动之前对实施该行动可能给环境质量造成的影响进行调查、预测和评估的活动。本文在综述了我国环境影响评价立法的基础上,从概念引入、理论研究的深化到环境影响评价的法... 详细信息

环境影响评价是对环境质量的预测性评估,是在进行某项决议或人为活动之前对实施该行动可能给环境质量造成的影响进行调查、预测和评估的活动。本文在综述了我国环境影响评价立法的基础上,从概念引入、理论研究的深化到环境影响评价的法律制度建立等方面,回顾了战略环境评价的产生和发展过程,提出了今后中国开展战略环境评价的重点研究领域应主要从三方面入手,即开展经济政策特别是国民经济发展计划的战略环境评价、开展规划战略环境评价的指标体系和战略环境评价中的公众参与机制研究等。

关键词：环境影响评价战略环境评价制度体系

Dryness-wetness change and regional differentiation of flood-drought disasters in Guangdong during 1480-1940AD

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Journal of Geographical Sciences 2005年第3期15卷 286-292页

作者： ZHONG Wei xue jibin PENG Xiaoying ZHAO Yinjuan College of Geographical Science South China Normal University Guangzhou 510631 China

Based on the historical records of the drought and flood disasters during 1480-1940AD, this paper reconstructs the sequences of wetness index （WI） and drought and flood disasters. We find a good identical relationship between the fluctuation of WI sequence and the δ^18O record of the GISP2 ice core in Greenland, which shows an apparent monsoonal disposal pattern of moisture and temperature. By applying the Morlet Wavelet Transform Method to deal with the data, several apparent periodicities, such as 7-8a, 11-15a, 20-23a and ca 50a, are revealed, among which some can be attributed to the solar forcing. Based on results of Cluster Analysis of dry-wet changes, we resume the regional differentiation pattern of flood-drought disasters all over Guangdong during different climatic intervals in the LIA and, find the western and northern parts of Guangdong have undergone drastic changes in drought-flood regional differentiation, but the eastern part is relatively stable, and the area of the Pearl River Delta shows stable condition of more flood disasters.

关键词： Guangdong climatic change drought and flood disaster regional differentiation the LIA

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新疆巴里坤湖全新世环境记录及区域对比研究

第四纪研究 2008年第4期28卷 610-620页

作者：薛积彬钟巍华南师范大学地理科学学院广州510631

选择位于西风环流显著影响区的巴里坤湖作为研究对象，采用14C测年建立了巴里坤湖沉积剖面约***．P．以来的时间序列。对该湖泊剖面沉积物的矿物x射线衍射、自生碳酸盐稳定同位素、碳酸盐含量和粒度指标的综合分析表明，***．P．以来，... 详细信息

选择位于西风环流显著影响区的巴里坤湖作为研究对象，采用14C测年建立了巴里坤湖沉积剖面约***．P．以来的时间序列。对该湖泊剖面沉积物的矿物x射线衍射、自生碳酸盐稳定同位素、碳酸盐含量和粒度指标的综合分析表明，***．P．以来，巴里坤湖地区的气候环境变化大致经历了冷干（9400～***．P．）-暖湿（7400～***．P．）-暖干（5900～***．P．）-凉湿（3100～***．P．）-冷干（1100～***．P．）-暖干（***．P．以来）的气候变化过程，该过程基本上同周边区域的气候环境变化记录相-致。在***．P．左右，北疆地区的几个典型湖泊沉积记录序列都指示该时期气候环境发生了较为明显的转折，可能暗示了这-时期亚洲中部干旱区（至少在北疆地区）大气环流状况发生了重大调整。

关键词：巴里坤湖全新世气候环境区域对比

近500年广东沿海地区台风活动历史重建与分析

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华南师范大学学报（自然科学版） 2018年第2期50卷 86-93页

作者：李晴薛积彬华南师范大学地理科学学院广州510631

根据史料文献记载,并结合现代台风活动特征,对历史时期(公元1470—1949年)广东沿海地区的台风活动进行了重建,采用相关性分析和交叉小波分析方法探讨了历史时期的台风活动、北半球平均气温以及太平洋年代际震荡(Pacific Decadal Oscilla... 详细信息

根据史料文献记载,并结合现代台风活动特征,对历史时期(公元1470—1949年)广东沿海地区的台风活动进行了重建,采用相关性分析和交叉小波分析方法探讨了历史时期的台风活动、北半球平均气温以及太平洋年代际震荡(Pacific Decadal Oscillation,PDO)相互之间的关系.研究结果显示:(1)重建的历史时期台风活动年均频次与现代台风活动统计结果比较接近,二者在登陆区域上的分布比例也基本一致;(2)近500年来北半球平均气温与影响广东沿海地区的台风活动频次之间存在较为显著的正相关性,特别是在PDO暖位相时期二者之间的正相关性显著提高,这在一定程度上意味着在当前全球变暖背景下影响广东沿海地区的台风活动频次有可能增多.

关键词：史料记载台风活动广东沿海全球变暖小冰期

过去2000年中国东南地区气温与降水的集成重建与分析

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热带地理 2021年第4期41卷 778-789页

作者：温飞游爱华薛积彬华南师范大学地理科学学院广州510631

筛选和利用中国东南地区(大致范围为105oE以东、30oN以南) 16个站点的多种气候代用指标序列,重建了东南地区过去2 000年以来的气温与降水变化过程,并探讨了其可能的影响机制。研究发现,东南地区气温集成序列与其他学者重建的中国温度序... 详细信息

筛选和利用中国东南地区(大致范围为105oE以东、30oN以南) 16个站点的多种气候代用指标序列,重建了东南地区过去2 000年以来的气温与降水变化过程,并探讨了其可能的影响机制。研究发现,东南地区气温集成序列与其他学者重建的中国温度序列、北半球温度序列等均具有较好的可比性,一些百年尺度的典型特征气候时期,如黑暗时代冷期、中世纪暖期、近代小冰期以及20世纪现代暖期等均有显著的体现;降水集成序列显示东南地区在过去2 000年中干湿阶段性变化较为明显,特别是在中世纪暖期时降水整体上较为偏多,而在小冰期的前半段降水偏少、后半段降水偏多。总体来看,近2 000年来我国东南地区的气温与降水变化经历了较为多样的水热组合过程。值得指出地是,东南地区降水集成序列与已有的中国北方地区多条降水重建序列相互间可比性较弱,反映了中国东部季风区由南到北降水变化及其影响机制具有很大的区域性差异。分析认为,大尺度海—气相互作用、火山活动以及太阳辐射量变化等对我国东南地区过去2 000年的气候环境变化具有显著影响。

关键词：气候变化集成重建历史时期驱动机制东南地区