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International Journal of Digital Earth 2023年第1期16卷 2644-2659页

作者： Chong Liu Liping Zhu Junbo Wang Jianting Ju qingfeng ma Qiangqiang Kou State Key Laboratory of Tibetan Plateau Earth System Environment and Resources(TPESER)Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijingPeople’s Republic of China Piesat Information Technology Co. Ltd.BeijingPeople’s Republic of China University of Chinese Academy of Sciences BeijingPeople’s Republic of China

Salinity is an essential factor of lake water environments and aquatic systems.It is also sensitive to climatic changes and human activities based on concentration variations of solved minerals.However,there are few consecutively temporal studies on lake salinity variations on the Tibetan Plateau because the harsh environmental conditions make it diffcult to carry out in-situ observations for several lakes.In this study.we constructed a remote sensing retrieval model for lake salinity based on 87 in-situ lake investigations;moreover,interannual lake salinity and associated variations from 152 lakes larger than 50 km2 were analyzed on the Tibetan Plateau.A significant decreasing trend in lake salinity was observed between 2000 and 2019(pmanagement efficacy of water resources.

关键词： Optical remote sensing Tibetan Plateau lakes climate change salinity

Loss of life expectancy due to stroke and its subtypes in urban and rural areas in China,2005-2020

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Stroke & Vascular Neurology 2023年第5期8卷 349-357页

作者： Zixin Wang Wei Liu Yi Ren Chen Zhang Jia Yang Lijun Wang maigeng Zhou Peng Yin Junwei Hao qingfeng ma Department of Neurology Xuanwu HospitalCapital Medical UniversityBeijingChina National Center for Neurological Disorders BeijingChina National Center for Chronic and Non-communicable Disease Control and Prevention Chinese Center for Disease Control and PreventionBeijingChina

Stroke is characterised by high mortality and disability rate in China.This study aimed to explore the temporal trends in years of life lost(YLL)and loss of life expectancy due to stroke and its subtypes in urban and rural areas in China during 2005-2020.Data were obtained from China National Mortality Surveillance System.Abbreviated life and stroke-eliminated life tables were generated to calculate loss of life expectancy.The YLL and loss of life expectancy due to stroke in urban and rural areas at both national and provincial level during 2005-2020 were estimated.In China,the age-standardised YLL rate due to stroke and its subtypes were higher in rural areas than in urban areas.The YLL rate due to stroke showed a downward trend in both urban and rural residents from 2005 to 2020,decreased by 39.9%and 21.5%,respectively.Loss of life expectancy caused by stroke decreased from 1.75 years to 1.70 years from 2005 to 2020.During which,loss of life expectancy due to intracerebral haemorrhage(ICH)decreased from 0.94 years to 0.65 years,while that of ischaemic stroke(IS)increased from 0.62 years to 0.86 years.A slightly upward trend was observed in loss of life expectancy caused by subarachnoid haemorrhage(SAH),from 0.05 years to 0.06 years.Loss of life expectancy due to ICH and SAH was always higher in rural areas than in urban areas,whereas that of IS was higher in urban areas than in rural areas.Rural males suffered the greatest loss of life expectancy due to ICH and SAH,while the highest loss of life expectancy caused by IS was found in urban females.Furthermore,Heilongjiang(2.25 years),Tibet(2.17 years)and Jilin(2.16 years)were found to have the highest loss of life expectancy caused by stroke in 2020.Loss of life expectancy caused by ICH and SAH was higher in western China,while the disease burden of IS was heavier in northeast China.Stroke remains a major public health problem in China,although the age-standardised YLL rate and loss of life expectancy due to stroke decreased.Evidence-based strategies should be co

关键词： urban expect tables

Fifty years of Quaternary palynology in the Tibetan Plateau

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Science China Earth Sciences 2021年第11期64卷 1825-1843页

作者： Lingyu TANG Caiming SHEN Houyuan LU Chuanhai LI qingfeng ma Yunnan Key Laboratory of Plateau Geographical Processes and Environmental Changes Faculty of GeographyYunnan Normal UniversityKunming 650500China Nanjing Institute of Geology and Paleontology Chinese Academy of SciencesNanjing 210008China Key Laboratory of Cenozoic Geology and Environment Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China Nanjing Institute of Geography&Limnology Chinese Academy of SciencesNanjing 210008China CAS Center for Excellence in Tibetan Plateau Earth System Beijing 100101China University of Chinese Academy of Sciences Beijing 100049China Key Laboratory of Tibetan Environment Changes and Land Surface Processes Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China

Quaternary palynology in the Tibetan Plateau(TP)was initiated in the 1960s to meet the needs of economic development in western China.Pollen analysis was conducted for the first time on a 200-m long core of Quaternary lacustrine sediments taken from the main body of the TP in order to study pollen assemblages as well as vegetation and climate changes of glacial(cold)/interglacial(warm)periods.Pollen analysis of alpine snow and ice began at the first scientific expedition to the TP in the 1970s.After the 1980s,a series of international collaborative programs were carried out under Sino-French,Sino-German,Sino-Australian,and Sino-American cooperation,marking the integration of Chinese Quaternary palynology society with the international community.New methods for Quaternary palynology were gradually promoted and applied,changing the vegetational and climatic interpretation of Quaternary palynology from qualitative to quantitative.Since the 1990s,many palynologists have carried out extensive Quaternary palynological studies on fossil pollen sites of more than 60 lakes/sections and alpine glaciers in the TP to discuss the spatiotemporal vegetation changes and climatic and environmental evolution of the TP since the Pleistocene.Over the past half-century,Quaternary palynology in the TP has contributed to the establishment of the Chinese Quaternary pollen database and the study of vegetation and climate evolution since the Last Glacial maximum(LGM)in the TP.Currently available pollen records revealed the spatial and temporal distribution of vegetation in the TP since the LGM,exhibiting expansions and shrinkages of forest,meadow,grassland and desert in different periods such as the LGM,the last deglaciation,and Holocene optimum period.The paleomonsoon reflected by paleovegetation since the LGM has undergone the changes of weak-strengthening-strong-weakening but still active-shrinking,which is mainly affected by solar insolation.

关键词： Tibetan Plateau Lake core Ice core Quaternary palynology Paleovegetation Paleoclimate

Climatic and lake environmental changes in the Serling Co region of Tibet over a variety of timescales

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Science Bulletin 2019年第7期64卷 422-424页

作者： Liping Zhu Junbo Wang Jianting Ju Ning ma Yinsheng Zhang Chong Liu Boping Han Linshan Liu Mingda Wang qingfeng ma Key Laboratory of Tibetan Environment Changes and Land Surface Processes Institute of Tibetan Plateau Research Chinese Academy of Sciences Center for Excellence in Tibetan Plateau Earth Sciences Chinese Academy of Sciences University of Chinese Academy of Sciences Department of Ecology Jinan University Institute of Geographic Sciences and Natural Resource Research Chinese Academy of Sciences

The Serling Co region is located at the transitional zone of the interaction between the Indian monsoon and the westerlies over the Tibetan Plateau. The Serling Co lake covers a water area of2,389 km2(June 2017) in a 45,530 km2drainage basin. Under the dramatic hydro-meteorological changes on the Tibetan Plateau in recent decades, and complex hydrological compositions of rivers and lakes in the basin, the lake area expanded by 43%, from1,667 km2in 1976, to 2,389 km2in 2017 (1)In 2014 it surpassed Nam Co as the largest lake on the Tibetan Plateau [2], and exerts significant effect on regional environmental conditions.

关键词： Co Ti Climatic and lake environmental changes in the Serling Co region of Tibet over a variety of timescales

Pollen-inferred Holocene vegetation and climate histories in Taro Co,southwestern Tibetan Plateau

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Chinese Science Bulletin 2014年第31期59卷 4101-4114页

作者： qingfeng ma Liping Zhu Xinmiao L Yun Guo Jianting Ju Junbo Wang Yong Wang Lingyu Tang Key Laboratory of Tibetan Environment Changes and Land Surface Processes Institute of Tibetan Plateau ResearchChinese Academy of Sciences University of Chinese Academy of Sciences State Key Laboratory of Palaeobiology and Stratigraphy Nanjing Institute of Geology and PalaeontologyChinese Academy of Sciences

A 310-cm-long sediment core,covering the last10,200 years,was collected from Taro Co on the southwestern Tibetan Plateau and analyzed for pollen,grain size and total inorganic carbon content.The pollen data showed that vegetation changed from alpine steppe to alpine meadow during 10,200–8,900 cal a BP,to alpine steppe dominated by Artemisia during 8,900–7,400 cal a BP,to alpine meadow during 7,400–3,300 cal a BP and to alpine steppe after 3,300 cal a BP.Correspondingly,the pollen,grain size and total inorganic carbon content results revealed climatic change in this area over four stages.The initial stage was from 10,200 to 8,900 cal a BP,during which the climate changed from cold-dry to warm-humid.The second stage(8,900–7,400 cal a BP)was characterized by a warm and dry climate.However,at approximately7,400 cal a BP,the climate began to become cold and humid,which continued until 3,300 cal a BP.The last stage,from 3,300 cal a BP to present,was characterized as cold and increasingly arid.Climatic events of the early and mid-late Holocene showed that the area was significantly affected by the westerlies.However,the mid-Holocene climate in Taro Co was controlled by the Indian monsoon.The mid-late Holocene depositional environment record of Taro Co was very important to further elaborate the degree of influence by the westerlies or Indian monsoon.

关键词：气候变化中全新世青藏高原西南部花粉芋头植被 BP公司

平板式电化学过滤器构建及对甲基橙去除机制研究

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青岛科技大学学报（自然科学版） 2024年第3期45卷 53-59页

作者：初永宝李迎新马青峰青岛科技大学环境与安全工程学院山东青岛266042

构建了一种“一锅式”平板式电化学过滤器。同时,从电压、流速、电解质、pH多角度优化其甲基橙降解效率,并对其降解机制、稳定性和普适性进行探究。实验结果表明,在电压3 V,电解质浓度10 mmol·L^(-1),流速1.5 mL·min^(-1),pH(4~10)的... 详细信息

构建了一种“一锅式”平板式电化学过滤器。同时,从电压、流速、电解质、pH多角度优化其甲基橙降解效率,并对其降解机制、稳定性和普适性进行探究。实验结果表明,在电压3 V,电解质浓度10 mmol·L^(-1),流速1.5 mL·min^(-1),pH(4~10)的条件下,甲基橙去除率达95%。淬灭实验表明,体系降解机制为直接氧化。同时,在长时间稳定性实验中,甲基橙去除率仍处于较高水平。在最佳实验条件下,除甲基橙外,罗丹明B以及两者混合后的污染物降解率均在94%以上。

关键词：平板式过滤器碳纳米管膜电化学降解

珠穆朗玛峰北坡桤木属大气花粉传输路径与来源

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地球科学进展 2024年第4期39卷 419-428页

作者：程久菊吕新苗朱立平马庆峰 HUmaGAIN SIma PAUDAYAL N KHUM 中国科学院青藏高原研究所青藏高原地球系统与资源环境全国重点实验室北京100101 中国科学院大学北京100049 Central Department of Geology Tribhuvan UniversityKathmandu 44600Nepal

认识区域大气花粉组成及其形成条件有利于明确不同类型花粉组合的气候与环境意义。利用布卡大气花粉采样器在珠穆朗玛峰北坡开展了连续2年(2012—2013年)的大气花粉观测研究。基于后向轨迹和潜在来源区域模型,探讨了秋季主要组分桤木属... 详细信息

认识区域大气花粉组成及其形成条件有利于明确不同类型花粉组合的气候与环境意义。利用布卡大气花粉采样器在珠穆朗玛峰北坡开展了连续2年(2012—2013年)的大气花粉观测研究。基于后向轨迹和潜在来源区域模型,探讨了秋季主要组分桤木属花粉的传输路径与潜在来源区域,分析了桤木属花粉与其植物分布和大气环流的关系及气候指示意义。结果显示:(1)桤木属花粉季气团传输路径主要来自于采样点西南方向;(2)桤木属花粉潜在来源区域与其气团传输路径基本一致,主要是喜马拉雅山脉中段,包括尼泊尔中部和东部以及西藏南部等地区;(3)桤木属花粉数量、传输路径和来源区域的年际变化与大气环流有关,受高空西风影响的西南气团对桤木属花粉影响更大。研究结果可以为认识珠穆朗玛峰北坡外来花粉的气候意义提供科学依据。

关键词：桤木属花粉传输路径来源区域后向轨迹模拟青藏高原

性别对急性缺血性卒中患者机械取栓术预后的影响

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中国脑血管病杂志 2024年第2期21卷 85-92页

作者：贾鹏曹文博杨斌谌燕飞王亚冰马青峰高鹏焦力群滨州医学院第二临床医学院山东省烟台市264100 首都医科大学宣武医院神经外科首都医科大学宣武医院神经内科

目的探讨性别差异对前循环急性大血管闭塞性卒中(AIS-LVO)患者机械取栓术预后的影响。方法回顾性连续纳入2019年1月至2021年12月在首都医科大学宣武医院神经外科接受机械取栓治疗的前循环AIS-LVO患者,于机械取栓术后90 d将改良Rankin量... 详细信息

目的探讨性别差异对前循环急性大血管闭塞性卒中(AIS-LVO)患者机械取栓术预后的影响。方法回顾性连续纳入2019年1月至2021年12月在首都医科大学宣武医院神经外科接受机械取栓治疗的前循环AIS-LVO患者,于机械取栓术后90 d将改良Rankin量表(mRS)评分0~2分定义为预后良好,mRS评分3~6分定义为预后不良。收集患者基线资料(年龄、性别)、临床资料;临床资料包括血管疾病危险因素[高血压病、糖尿病、高脂血症、冠状动脉粥样硬化性心脏病(简称“冠心病”)、心房颤动、吸烟史、饮酒史、卒中史]、抗血小板聚集和抗凝药物使用史、基线美国国立卫生研究院卒中量表(NIHSS)评分、脑梗死分型、静脉溶栓、麻醉类型、发病至急诊时间、穿刺至血管再通时间(PTR)、发病至血管再通时间、基线Alberta卒中项目早期CT评分(ASPECTS)、闭塞部位、侧支循环状态、术后即刻再通情况。分别以性别、预后进行分组(男性组与女性组、预后不良组与预后良好组),比较两组患者基线和临床资料的差异。采用单因素Logistic回归分析性别在不同预后组间的差异,并采用Logistic多因素回归分析评估性别是否对机械取栓术患者的预后产生影响。结果共纳入了347例前循环AIS-LVO患者,其中女性组126例,男性组221例;预后良好组169例,预后不良组178例。(1)女性组患者年龄、心房颤动比例、基线NIHSS评分均高于男性组[70.5(59.0,80.0)岁比64.0(56.0,71.0)岁,Z=19.720;41.3%(52/126)比21.7%(48/221),χ^(2)=14.950;16(13,19)分比14(11,18)分,Z=9.670],吸烟、饮酒比例均低于男性组[5.6%(7/126)比54.8%(121/221),χ^(2)=83.420;3.2%(4/126)比49.8%(110/221),χ^(2)=78.990],组间差异均有统计学意义(均P0.05)。(2)单因素分析显示,预后不良组女性比例、年龄、冠心病比例、卒中史比例、NIHSS评分、PTR均高于预后良好组[41.6%(74/178)比30.8%(52/169),70(61,77)岁比64(54,70)岁,31.5%(56/178)比16.0%(27/169),23.0%(41/178)比13.6%(23/169),17(13,20)分比13(11,17)分,39(29,69)min比36(25,50)min],而ASPECTS、良好侧支比例、血管成功再通比例均低于预后良好组[8(7,9)分比9(8,10)分,15.7%(28/178)比55.0%(93/169),86.0%(153/178)比98.2%(166/169)],组间差异均有统计学意义(均P0.05)。结论接受取栓治疗的前循环AIS-LVO预后良好患者中女性比例低于预后不良者,但性别并非前循环AIS-LVO患者接受机械取栓术预后的影响因素。本研究结果尚需多中心、大样本数据进一步验证。

关键词：卒中机械取栓性别差异预后

Multiple thermal events recorded in the Acasta Gneiss Complex:Evidence from in-situ dating of zircon, titanite, and apatite

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Science China Earth Sciences 2024年第3期67卷 673-686页

作者： qingfeng MEI Jinhui YANG Jinfeng SUN Qiuli LI Shitou WU Xiaoxiao LING Peng PENG Hao WANG State Key Laboratory of Lithospheric Evolution Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049China Key Laboratory of Computational Geodynamics University of Chinese Academy of SciencesBeijing 100049China

In-situ dating of the zircons, titanites, and apatites in the rock fragments of approximately 1 cm2in size from the Acasta Gneiss Complex was performed using secondary ion mass spectrometry or laser ablation inductively coupled plasma mass spectrometry to provide constraints on the thermal history of the Acasta Gneiss Complex. The zircons in these rock fragments typically exhibit multiple age populations, reflecting the presence of inherited zircons or the post-crystallization process of zircon overgrowth. Combined with previous studies, our zircon dating results reveal multiple magmatic events that occurred in the Acasta Gneiss Complex, specifically at >3.96, ~3.72, and ~3.57 Ga, respectively. A titanite Pb-Pb isochron age of2911±22 ma(95% confidence level, MSWD=1.5) for sample AY199 is identified, consistent with the timing of the latest Archean magmatism in the Acasta Gneiss Complex. The titanite U-Pb ages for samples AC478 and AY066 are 1932±270 ma(95% confidence level, MSWD=2.3) and 1813±45 ma(95% confidence level, MSWD=2.3), respectively. The apatites in sample P090803-C exhibit a Pb-Pb isochron age of 1833±26 ma(95% confidence level, MSWD=1.4). The apatite U-Pb ages for samples AC478, AY199, and AY066 are 1850±20 ma(95% confidence level, MSWD=1.3), 1827±100 ma(95% confidence level, MSWD=6.3), and 1807±58 ma(95% confidence level, MSWD=3.9), respectively. Titanites in samples AC478 and AY066, as well as the apatites in all four investigated samples, show a uniform age(Pb-Pb or U-Pb age) of ~1.9–1.8 Ga,indicating U-Pb system reset in these minerals due to the Wopmay orogeny and documenting that the peak temperature condition associated with the Wopmay orogeny exceeded the apatite U-Pb closure temperature and approached or exceeded that of titanite.

关键词： Zircon Titanite Apatite Acasta Gneiss Complex Wopmay Orogen

Palaeoecological and palaeoenvironmental significance of someimportant spores and micro-algae in Quaternary deposits

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Chinese Science Bulletin 2013年第20期58卷 3125-3139页

作者： TANG LingYu maO LiMi Lü XinMiao ma qingfeng ZHOU ZhongZe YANG ChunLei KONG ZhaoChen BATTEN David J State Key Laboratory of Palaeobiology and Stratigraphy Nanjing Institute of Geology and Palaeontology Chinese Academy of Sciences Key Laboratory of Tibetan Environment Changes and Land Surface Processes Institute of Tibetan Plateau Research Chinese Academy of Sciences University of Chinese Academy of Sciences School of Resources and Environmental Engineering Anhui University Institute of Botany Chinese Academy of Sciences School of Earth Atmospheric and Environmental Sciences University of Manchester

Spores of ferns and allied plants, and micro-algae frequently occur in abundance in Quaternary deposits, but their palaeoenvironmental significance is seldom evaluated. This paper presents morphological descriptions of spores of Selaginella sinensis (Desv.) Spring, 1843 (Selaginellaceae) and Ceratopteris cf. thalictroides (L.) Brongniart, 1821 (Parkeriaceae) and the algae Pediastrum boryanum (Turpin) Meneghini, 1840, P. simplex Meyen, 1829, P. integrum N geli, 1849 (all Hydrodictyaceae), Spiniferites mantell, 1850, emend. Sarjeant, 1970 (Spiniferitaceae) and Concentricystes Rossignal, 1962, emend. Jiabo, 1978 (systematic position unclear), and discusses their occurrence in mostly Quaternary sedimentary successions. All are closely associated with aquatic habitats. Extant Selaginella sinensis often colonizes fairly wet hillsides and gaps between rocks, and shady sides of ravines and slopes; it is also found within thickets of trees and shrubs (boscages) and in forests with calcareous soils. Ceratopteris thalictroides, Pediastrum and Concentricystes inhabit freshwater lakes and both natural and artificial wetlands, such as paddy fields and ditches. Spiniferites is a salt-water genus and usually associated with the marine realm. Fossil and subfossil representatives of all of these taxa can be useful proxies of biodiversity and, therefore, also important for determining environmental conditions during the Quaternary period.

关键词：第四纪沉积物古环境意义微型藻类孢子形态古生态蕨类植物石灰性土壤生物多样性