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Biodiversity conservation in China:A review of recent studies and practices

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Environmental Science and Ecotechnology 2020年第2期2卷 30-39页

作者： Wei Wang Chunting Feng Fangzheng liu junsheng li State Key Laboratory of Environmental Criteria and Risk Assessment State Environmental Protection Key Laboratory of Regional Eco-process and Function AssessmentChinese Research Academy of Environmental SciencesBeijing100012China Biodiversity Research Center Chinese Research Academy of Environmental SciencesBeijing100012China

Biodiversity conservation plays an important role in the sustainable development of human *** had made significant progress in biodiversity conservation studies and *** paper reviews major achievements in China in the past decades,especially those since *** terms of the science behind biodiversity conservation,Chinese scholars have made significant contributions to priority research subjects,including mechanisms for maintaining biological communities and the relationship between biodiversity and ecosystem ***,biodiversity conservation and management systems specific to China have been basically *** Chinese Government and researchers have undertaken a number of investigations,scientific studies,and monitoring,and have established relevant *** efforts taken to protect and restore biodiversity and ecosystems,the concept of biodiversity has gradually become popular in *** review is an attempt to share with the world the learning from China’s progress towards becoming an ecological civilization and highlights that the efforts towards biodiversity conservation need to be organically integrated with sustainable development goals.

关键词： Ecological civilization Mainstreaming Mobile supervising system Sustainable development Protected areas

Spatial and temporal variation of water clarity in typical reservoirs in the Beijing-Tianjin-Hebei region observed by GF 1-WFV satellite data

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维普期刊数据库

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Journal of Oceanology and limnology 2024年第4期42卷 1048-1060页

作者： Chang CAO junsheng li Xiaodong JIA Shenglei WANG Bo WAN liaoning Earthquake Agency Shenyang 11000China Key Laboratory of Digital Earth Science Aerospace Information Research InstituteChinese Academy of SciencesBeijing 100094China International Research Center of Big Data for Sustainable Development Goals Beijing 100094China School of Electronic Electrical and Communication EngineeringUniversity of Chinese Academy of SciencesBeijing 100049China

Rapidly monitoring regional water quality and the changing trend is of great practical and scientific significance,especially for the Beijing-Tianjin-Hebei(BTH)region of China where water resources are relatively scarce and inland water bodies are generally *** remote sensing data of the GF 1 satellite launched in 2013 have characteristics of high spatial and temporal resolution,which can be used for the dynamic monitoring of the water environment in small lakes and ***,the water quality remote sensing monitoring model based on the GF 1 satellite data for lakes and reservoirs in BTH is still lacking because of the considerable differences in the optical characteristics of the lakes and *** this paper,the typical reservoirs in BTH-Guanting Reservoir,Yuqiao Reservoir,Panjiakou Reservoir,and Daheiting Reservoir are taken as the study *** the atmospheric correction of GF 1-WFV,the relative radiation normalized atmospheric correction was adopted after comparing it with other methods,such as 6 S and *** the water clarity retrieval,a water color hue angle based model was proposed and outperformed other available published models,with the R 2 of 0.74 and MRE of 31.7%.The clarity products of the four typical reservoirs in the BTH region in 2013-2019 were produced using the GF 1-WFV *** on the products,temporal and spatial changes in clarity were analyzed,and the main influencing factors for each water body were *** was found that the clarity of Guanting,Daheiting,and Panjiakou reservoirs showed an upward trend during this period,while that of Yuqiao Reservoir showed a downward *** the influencing factors,the water level of the water bodies can be an important factor related to the water clarity changes in this region.

关键词： GF 1 satellite atmospheric correction clarity Beijing-Tianjin-Hebei spatial and temporal change analysis

Three-dimensionally Ordered Macroporous Phosphotungstic Acid/SiO2 for Efficient Catalytic Oxidative Desulfurization

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Journal of Wuhan University of Technology(Materials Science) 2018年第4期33卷 849-854页

作者：杜岳 YANG Peng 雷家珩 ZHOU Shiyu li junsheng DU Xiaodi School of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070China School of Chemistry Chemical Engineering and Life ScienceWuhan University of TechnologyWuhan 430070China

Three-dimensionally ordered（3DOM） macroporous phosphotungstic acid/SiO_2（HPW/SiO_2） materials were prepared by using colloidal crystal as templates and applied for oxidative desulfurization（ODS） of the model fuel oil. The obtained HPW/SiO_2 materials were characterized through scanning electron microscopy, powder X-ray diffraction, N_2 sorption, and Fourier transform infrared spectroscopy. The results indicated that 3 DOM HPW/SiO_2 possessed hierarchical pore architectures which contained ordered macropores and disordered mesopores, with the Keggin type HPW embedded in the framework of pore structure. The removal rate of dibenzothiophene（DBT） could reach 100% under the optimum conditions, moreover. The performance was only slightly decreased for the regenerated catalyst after 7 cycles.

关键词： three-dimensionally ordered macroporous SiO2 phosphotungstic acid oxidativedesulfurization

LQR Control Scheme for Active Vehicle Suspension Systems Based on Modal Decomposition

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LQR Control Scheme for Active Vehicle Suspension Systems Bas...

Impacts of climate change on ecosystem in Priority Areas of Biodiversity Conservation in China

第25届中国控制与决策会议

作者： Xinjiang Wei junsheng li Xiaohua liu School of Mathematics and Information Ludong University

ISBN: (纸本)9781467355322

A new control scheme combining the classical LQR control with modal decomposition method is presented for an active vehicle suspension system. Modal decomposition is proposed to optimize the weighted modal matrix, which gives each modal decomposition components with different weights according to their different importance. The LQR control scheme based on modal decomposition method is designed to improve anti-disturbance performance for the vehicle suspension system. Finally, simulations for a two-degree-of-freedom quarter-car model with an active suspension are given to demonstrate the effectiveness of the proposed approach compared with the passive suspension.

关键词： LQR control modal decomposition robust control active vehicle suspension system

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cnki会议

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Chinese Science Bulletin 2014年第34期59卷 4668-4680页

作者： Xiaopu Wu Xin lin Yuan Zhang Junjing Gao li Guo junsheng li State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Academy of Environmental Sciences College of Water Sciences Beijing Normal University Sino-French Institute for Earth System Science College of Urban and Environmental Sciences Peking University

Priority Areas of Biodiversity Conservation(PABCs) are the key areas for future biodiversity conservation in China. In this study, we used 5 dynamic global vegetation models(DGVMs) to simulate the ecosystem function changes under future climate change scenario in the 32 terrestrial PABCs. We selected vegetation coverage,vegetation productivity, and ecosystem carbon balance as the indicators to describe the ecosystem function *** results indicate that woody vegetation coverage will greatly increase in the Loess Plateau Region, the North China Plain, and the Lower Hilly Region of South *** future climate change will have great impact on the original vegetation in alpine meadow and arid and semiarid regions. The vegetation productivity of most PABCs will enhance in the coming 100 years. The largest increment will take place in the southwestern regions with high elevation. The PABCs in the Desert Region of InnerMongolia-Xinjiang Plateau are with fastest productivity climbing, and these areas are also with more carbon sink accumulation in the future. DGVM will be a new efficient tool for evaluating ecosystem function changes in future in large scale. This study is expected to provide technical support for the future ecosystem management and biodiversity conservation under climate change.

关键词：生物多样性保护生态系统功能未来气候变化中国北方植被生产力黄土高原区植被覆盖率半干旱地区

Atmospheric correction of CBERS CCD images with MODIS data

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Science China(Technological Sciences) 2006年第Z2期49卷 149-158页

作者： li junsheng ZHANG Bing CHEN Zhengchao SHEN Qian State Key Laboratory of Remote Sensing Science Jointly Sponsored by the Institute of Remote Sensing Applications of Chinese Academy of Sciences and Beijing Normal UniversityBeijing 100101China

China Brazil Earth Resource Satellite(CBERS)CCD images have much potential for inland water environmental ***,their atmospheric accuracy correction can affect their quantitative *** paper contains an atmospheric correction algorithm for CBERS CCD images with MODIS data from the same day,the use of which improves the atmospheric correction algorithm of ocean color remote sensing developed by Gordon(1993,1994)and makes it applicable to inland *** improved algorithm retrieves atmospheric parameters from MODIS data and uses them to perform the atmospheric correction of CBERS CCD *** results show that the atmospheric correction algorithm of CBERS CCD images assisted by MODIS data is ***,MODIS data can be freely obtained on a daily basis,making the algorithm developed in this paper useful for environmental monitoring of inland waters.

关键词： CBERS MODIS atmospheric correction inland waters aerosol.

Steady increase in water clarity in Jiaozhou Bay in the Yellow Sea from 2000 to 2018:Observations from MODIS

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Journal of Oceanology and limnology 2021年第3期39卷 800-813页

作者： Ziyao YIN junsheng li Jue HUANG Shenglei WANG Fangfang ZHANG Bing ZHANG Key Laboratory of Digital Earth Science Aerospace Information Research InstituteChinese Academy of SciencesBeijing 100094China University of Chinese Academy of Sciences Beijing 100049China College of Geomatics Shandong University of Science and TechnologyQingdao 266590China Institute of Remote Sensing and Geographic Information System Peking UniversityBeijing 100871China

The Moderate Resolution Imaging Spectroradiometer(MODIS)surface reflectance data were used to analyze the temporal and spatial distribution characteristics of water clarity(Z_(sd))in the Jiaozhou Bay,Qingdao,China,in the Yellow Sea from 2000 to 2018.Z_(sd)retrieval models were regionally optimized using in-situ data with coincident MODIS images,and then were used to retrieve the Z_(sd) products in Jiaozhou Bay from *** analysis of the Z_(sd) results suggests that the spatial distribution of relative Z_(sd) spatial characteristics in Jiaozhou Bay was stable,being higher Z_(sd) in the southeast and a lower Z_(sd) in the *** annual mean Z_(sd) in Jiaozhou Bay showed a significant upward trend,with an annual increase of approximately 0.02 *** depth and wind speed were important factors affecting the spatial distribution and annual variation of Z_(sd) in Jiaozhou Bay,respectively.

关键词： water clarity Jiaozhou Bay Moderate Resolution Imaging Spectroradiometer(MODIS) spatial distribution

An efficient bifunctional electrocatalyst derived from layer-by-layer self-assembly of a three-dimensional porous Co-N-C@graphene

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Science Bulletin 2019年第14期64卷 968-975页

作者： Shichang Cai Rui Wang William M. Yourey junsheng li Haining Zhang Haolin Tang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China College of Engineering Penn State University Hazleton PA 18202 USA

Three-dimensional (3D) porous carbon-based materials with tunable composition and microstructure are of great interest for the development of oxygen involved electrocatalytic reactions. Here, we report the synthesis of 3D porous carbon-based electrocatalyst by self-assembling Co-metal organic frameworks (MOF) building blocks on graphene via a layer-by-layer technique. Precise control of the structure and morphology is achieved by varying the MOF layer to tune the electrocatalytic properties. The as-produced electrocatalyst exhibits an excellent catalytic activity for the oxygen reduction reaction in 0.1molL^-1 KOH, showing a high onset potential of 0.963V vs. reversible hydrogen electrode (RHE) and a low tafel slope of 54mVdec^-1, compared to Pt/C (0.934V and 52mVdec^-1, respectively). Additionally, it shows a slightly lower potential vs. RHE (1.72V) than RuO2 (1.75V) at 10mAcm^-2 in an alkaline electrolyte. A rechargeable Zn-air battery based on the as-produced 3D porous catalyst demonstrates a high peak power density of 119mWcm^-2 at a cell voltage of 0.578V while retaining an excellent stability over 250 charge-discharge cycles.

关键词： Oxygen reduction reaction Cobalt Three-dimensional Oxygen evolution reaction Graphene

Gaussian decomposition and component pigment spectral analysis of phytoplankton absorption spectra

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Journal of Oceanology and limnology 2019年第5期37卷 1542-1554页

作者： YE Huping ZHANG Bing liAO Xiaohan li Tongji SHEN Qian ZHANG Fangfang ZHU Jianhua li junsheng State Key Laboratory of Resources and Environmental Information System Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China Institute of Remote Sensing and Digital Earth Chinese Academy of SciencesBeijing 100094China National Ocean Technology Center Tianjin 300112China China-Sri Lanka Joint Research and Demonstration Center for Water Technology Chinese Academy of SciencesBeijing 100085China

The absorption spectrum of phytoplankton is an important bio-optical parameter for ocean color hyperspectral remote sensing;its magnitude and shape can be aff ected considerably by pigment composition and concentration. We conducted Gaussian decomposition to the absorption spectra of phytoplankton pigment and studied the spectral components of the phytoplankton, in which the package effect was investigated using pigment concentration data and phytoplankton absorption spectra. The decomposition results were compared with the corresponding concentrations of the five main pigment groups (chlorophylls a , b , and c , photo-synthetic carotenoids (PSC), and photo-protective carotenoids (PPC)). The results indicate that the majority of residual errors in the Gaussian decomposition are lity for chlorophylls a , c , PPC, and PSC. We also tested the estimation of pigment concentrations from the empirical specific absorption coeffi cient of pigment composition. The empirical decomposition showed that the Ficek model was the closest to the original spectra with the smallest residual *** pigment decomposition results and HPLC measurements of pigment concentration are in a high consistency as the scatter plots are distributed largely near the 1:1 line in spite of prominent seasonal variations. The Wozniak model showed a better fit than the Ficek model for Ch1 a , and the median relative error was small. The pigment component information estimated from the phytoplankton absorption spectra can help better remote sensing of hyperspectral ocean color that related to the changes in phytoplankton communities and varieties.

关键词： phytoplankton absorption spectrum pigment concentration Gaussian decomposition