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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 *** is also sensitive to climatic changes and human activities based on concentration variations of solved ***,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 *** this *** 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(p<0.01).The spatial variation of lake salinity was negatively correlated with lake area changes,and the optical characteristics of salt mineral solutions were generally positively correlated with mineral concentration based on the absorption coefficients of ionic *** decreasing trend of lake salinity was not directly affected by ***,but was,potentially dominated by the expanding lake water *** study improves the understanding of regional water environmental changes and management efficacy of water resources.

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

Comparison of surface water chemistry and weathering effects of two lake basins in the Changtang Nature Reserve,China

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Journal of Environmental Sciences 2016年第3期28卷 183-194页

作者： Rui Wang Zhaofei Liu Liguang Jiang Zhijun Yao junbo Wang jianting ju Institute of Geographic Sciences and Natural Resources Research Chinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China Institute of Tibetan Plateau Research Chinese Academy of SciencesBeijing 100085China

The geochemistry of natural waters in the Changtang Nature Reserve,northern Tibet,can help us understand the geology of catchments,and provide additional insight in surface processes that influence water chemistry such as rock weathering on the Qinghai–Tibet ***,severe natural conditions are responsible for a lack of scientific data for this *** study represents the first investigation of the chemical composition of surface waters and weathering effects in two lake basins in the reserve（Lake Dogaicoring Qiangco and Lake Longwei Co）.The results indicate that total dissolved solids（TDS）in the two lakes are significantly higher than in other gauged lakes on the Qinghai–Tibet Plateau,reaching 20–40 g/L,and that TDS of the tectonic lake（Lake Dogaicoring Qiangco）is significantly higher than that of the barrier lake（Lake Longwei Co）.Na＋and Cl-are the dominant ions in the lake waters as well as in the glacier-fed lake inflows,with chemical compositions mainly affected by halite *** contrast,ion contents of inflowing rivers fed by nearby runoff are lower and concentrations of dominant ions are not ***,silicate,and carbonate weathering has relatively equal effects on these *** to their limited scope,small streams near the lakes are less affected by carbonate than by silicate weathering.

关键词： Surface water geochemistry Rock weathering Changtang Nature Reserve Qinghai–Tibet Plateau

Robust boundary-induced bulk propagations in elastic waveguides with nonplanar surfaces

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Science China(Physics,Mechanics & Astronomy) 2024年第4期67卷 88-96页

作者： Baizhan Xia Jielong Zhang Zihan Jiang jianting Liu State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body Hunan UniversityChangsha 410082China College of Mechanical and Vehicle Engineering Hunan UniversityChangsha 410082China

Trivial elastic waveguides induced by line defects and nontrivial elastic waveguides protected by topological edge states have been extensively examined in planar waveguide *** these investigations,little is known about topologically protected bulk states and their resulting robust transmission properties,especially in nonplanar elastic waveguides with folded,curved,and twisted *** Dirac waveguides with robust boundary-induced bulk states are *** states arise from the truncated boundaries of bulks with linear Dirac conical dispersions,differing from topologically protected edge states ensured by the bulk-edge *** proof is provided,in which boundary-induced bulk states show robustly high-throughput transmissions along the waveguides,even with folded,curved,and twisted *** results not only open up new avenues for examining novel topological phenomena about bulk but also offer new platforms for developing topological devices with nonplanar surfaces.

关键词： elastic waveguides boundary-induced bulk propagations Dirac conical dispersions nonplanar surfaces

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

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Chinese Science Bulletin 2014年第26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 *** 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 ***,the pollen,grain size and total inorganic carbon content results revealed climatic change in this area over four *** initial stage was from 10,200 to 8,900 cal a BP,during which the climate changed from cold-dry to *** second stage(8,900–7,400 cal a BP)was characterized by a warm and dry ***,at approximately7,400 cal a BP,the climate began to become cold and humid,which continued until 3,300 cal a *** last stage,from 3,300 cal a BP to present,was characterized as cold and increasingly *** events of the early and mid-late Holocene showed that the area was significantly affected by the ***,the mid-Holocene climate in Taro Co was controlled by the Indian *** 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

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Composition, spatial distribution, and environmental significance of water ions in Pumayum Co catchment, southern Tibet

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Journal of Geographical Sciences 2010年第1期20卷 109-120页

作者： ZHU Liping ju jianting WANG Yong XIE Manping WANG junbo PENG Ping ZHEN Xiaolin LIN Xiao Institute of Tibetan Plateau Research CAS Beijing 100085 China Institute of Geographic Sciences and Natural Resources Research CAS Beijing 100101 China Graduate University of Chinese Academy of Sciences Beijing 100049 China

The chemistry of major cations （Mg^2＋, Ca^2＋, Na^＋, and K^＋） and anions （HCO3^-, SO4^2-, and CI^-） in the water of Lake Pumayum Co and its inflow river was studied, revealing the obvious ionic difference among various inflow rivers and the lake. The chemical type of the lake water was Mg^2＋-Ca^2＋-HCO3^- -SO^2＋, but the major ions of the main inflow rivers were Ca^2＋-Mg^2＋-HCO3^-. In the lake inlet of Jiaqu River, the main inflow river, there was significant variance of water chemistry within the depth less than 2 m. However, it was almost homogeneous at other area of the lake. Therefore, with the evidence of distribution of water chemistry and oxygen isotope of lake water, a conclusion can be outlined that Jiaqu River had a distinct effect on the hydrochemistry of the water on the submerged delta, whereas this is not the case for other rivers. The Gibbs plot revealed that the dominant mechanism responsible for controlling chemical compositions of the lake water was rocks weathering in the drainage area. Ion ratios and ternary plots further explored the main processes controlling the water chemistry of the catchment, i.e., carbonate weathering, pyrite weathering, and silicate weathering. The different hydrochemistry characteristics between river water and lake water may result from the CaCO3 precipitation. The findings will benefit the explanation of the environmental significance of carbonate in paleolimnological studies in the lake.

关键词： Lake Pumayum Co hydrochemistry spatial distribution sedimentary process carbonate

Environmental changes reflected by n-alkanes of lake core in Nam Co on the Tibetan Plateau since 8.4 kaB.P.

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Chinese Science Bulletin 2008年第19期53卷 3051-3057页

作者： LIN Xiao ZHU LiPing WANG Yong WANG junBo XIE ManPing ju jianting Roland MAUSBACHER Antje SCHWALB Institute of Tibetan Plateau Research Chinese Academy of Sciences Beijing 100085 China Graduate University of Chinese Academy of Sciences Beijing 100049 China Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China Institut for Geographie Friedrich-Schiller-Universitat D-07743 Jena Germany Institut für Umweltgeologie Technische Universitat 38106 Braunschweig Germany

The n-alkanes are extracted from NMLC-1 core that was drilled in the Nam Co, central Tibet. They are measured by using Gas Chromatography and Mass Spectrometry (GC/MS) for componential and quantitative analyses. According to the constructed depth-age model, the component and concentration of n-alkanes, together with total organic carbon (TOC), total nitrogen (TN) and carbonate are used to elu- cidate palaeoenvironmental changes of Nam Co during the past 8.4 ka. The results indicate that Holo- cene environment performs three stages in the lake area. In the stage of 8.4―6.7 kaB.P., it was warmer while precipitation slightly increased. This stage was ended by an obvious cold/dry event. During 6.7― 5.8 kaB.P., temperature increased rapidly and reached its maximum values at about 6.0 kaB.P. The environments were warm/wet optimum for the blooming of terrestrial plants and submerged aquatic plants. After that, temperature decreased continuously and showed the lowest values at about 3.0 kaB.P. From 2.9 kaB.P. to the present, temperature rose again but alternated with cold and warm. The lake area tended to be dry after 1.4 kaB.P. During 600―400 aB.P., the environmental feature was the reflection of "Little Ice Age".

关键词：湖泊沉淀物环境变化链烷烃西藏

NIR-switchable local hydrogen generation by tandem bimetallic MOFs nanocomposites for enhanced chemodynamic therapy

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Regenerative Biomaterials 2024年第1期3卷 58-68页

作者： jun Zhong Xiang Zheng Yuan Wen Yuewei Li jianting Zhang Ranjith Kumar Kankala Shibin Wang Aizheng Chen Institute of Biomaterials and Tissue Engineering Huaqiao UniversityXiamen 361021China Fujian Provincial Key Laboratory of Biochemical Technology Huaqiao UniversityXiamen 361021China Fujian Provincial Key Laboratory of Biomass Low-Carbon Conversion Huaqiao UniversityXiamen 361021China

The inadequate quantity of hydrogen peroxide(H_(2)O_(2))in cancer cells promptly results in the constrained success of chemodynamic therapy(CDT).Significant efforts made throughout the years;nevertheless,researchers are still facing the great challenge of designing a CDT agent and securing H_(2)O_(2) supply within the tumor *** this study,taking advantage of H_(2)O_(2) level maintenance mechanism in cancer cells,a nanozyme-based bimetallic metal-organic frameworks(MOFs)tandem reactor is fabricated to elevate intracellular H_(2)O_(2) levels,thereby enhancing *** addition,under nearinfrared excitation,the upconversion nanoparticles(UCNPs)loaded into the MOFs can perform photocatalysis and generate hydrogen,which increases cellular susceptibility to radicals induced from H_(2)O_(2),inhibits cancer cell energy,causes DNA damages and induces tumor cell apoptosis,thus improving CDT therapeutic efficacy *** proposed nanozyme-based bimetallic MOFs-mediated CDT and UCNPs-mediated hydrogen therapy act as combined therapy with high efficacy and low toxicity.

关键词： chemodynamic therapy nanozyme bimetallic MOFs gas therapy

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

Hydrodynamic process of Tibetan Plateau lake revealed by grain size:Case study of Pumayum Co

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Chinese Science Bulletin 2012年第19期57卷 2433-2441页

作者： ju jianting ZHU LiPing FENG JinLiang WANG junBo WANG Yong XIE ManPing PENG Ping ZHEN XiaoLin LÜXinMiao Key Laboratory of Tibetan Environment Changes and Land Surface Processes Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China College of Tourism and Geography Sciences Yunan Normal UniversityKunming 650500China

Under the background of global warming,some lakes on the Tibetan Plateau(TP) are potentially sensitive to temperature *** a case study of Pumayum Co,where glacier meltwater is important to supply(we call this a glacier-fed lake hereafter),we analyze the sensitivity of lake sediment grain size to temperature *** is done by resolving the modern hydrodynamic process,coupled with comparison of paleoclimatic *** to the spatial distributions of parameters,percentage of grain size and the grain size frequency distribution curve,hydrodynamic processes are *** clastic sedimentation types are thereby *** the open lake area,suspended load transport is the main transport *** Size Trend Analysis(GSTA),a sediment dynamics model,reveals a trend toward eastward *** indicates that the largest and glacier-fed river,the Jiaqu River,influences the entire lake(not just the subsurface alluvial fan),and that lake sediment grain size may serve as a temperature *** series comparison between grain size of a short core from the central lake and meteorological data confirms this temperature indication,which in turn shows reliability of the method discriminating the hydrodynamic *** case study will improve the ability of paleoclimatic reconstruction using lake sediment in glacier-fed lakes on the Tibetan Plateau.

关键词：高原湖泊青藏高原晶粒尺寸水动力过程案例显示沉积物粒度动力学过程

中国地学期刊的国际化思考——以Science in China Series D: Earth Sciences为例

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中国科技期刊研究 2010年第6期21卷 736-740页

作者：鞠建廷 <中国科学>杂志社 100717

通过对比Science in China Series D: Earth Sciences (简称SCES)与Journal of Geophysical Research (简称JGR)、Geophysical Research Letters (简称GRL)和Journal of Asian Earth Sciences(简称JAES)3个国际地学期刊的国际化程度,结合SCES的地域性特点、中国地学研究的发展与国际合作程度以及笔者的工作实际,提出SCES的国际化必须是立足本土的国际化,目前亟待解决的是读者的国际化,并呼吁期刊管理部门制定评价指标时,考虑SCES类期刊地域性的特点。

关键词：地学期刊国际化期刊评价Science in China Series D:Earth Sciences