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气候变化下川西地区森林碳储量对森林管理措施和干扰的长期响应

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生态学报 2025年第1期45卷 210-226页

作者：邓诗宇张明芳侯怡萍余恩旭李强刘子佩胡嘉毅田洲徐亚莉电子科技大学资源与环境学院成都611731 不列颠哥伦比亚大学(奥肯那根校区) 加拿大不列颠哥伦比亚省V1V1V7 中国林业科学研究院森林生态环境与自然保护研究所北京100091 西北农林科技大学杨陵712100

评估气候变化下森林管理措施对森林碳储量的长期影响对我国碳中和目标达成具有重要意义。传统森林碳储量评价方法对气候变化、火灾等干扰以及森林经营管理措施等多重影响下森林生态系统长期演替过程刻画不足,难以有效揭示多种作用因素... 详细信息

评估气候变化下森林管理措施对森林碳储量的长期影响对我国碳中和目标达成具有重要意义。传统森林碳储量评价方法对气候变化、火灾等干扰以及森林经营管理措施等多重影响下森林生态系统长期演替过程刻画不足,难以有效揭示多种作用因素对区域森林碳汇能力的长期综合影响。针对上述问题,以气候变化敏感区川西高山、亚高山地区为例,在探讨传统碳储量评价方法局限性的基础上,构建了考虑森林干扰的自然恢复和森林干扰⁃森林经营管理措施组合的人工恢复方案,结合森林景观生态模型LANDIS PRO和森林生态系统碳⁃水动态模型PnET⁃II模拟、预测了未来气候情景下(2020—2070年)自然恢复和不同人工恢复方案下区域森林地上碳储量及碳密度的时空动态,并通过对比筛选出提升固碳能力的最佳森林管理措施。结果表明,川西地区森林林龄趋于年轻化(平均林龄40a),具有巨大碳汇提升潜力。2020—2070年,自然恢复情景下研究区森林地上碳储量将由2020年的466.99Tg增加至2070年的780.96Tg,提高了67.23%。其中,以云杉、冷杉为主的成熟、过熟常绿针叶林是川西地区碳储量的主要贡献来源。但是自然恢复情景下川西地区森林平均碳密度在21世纪中后期停滞增长,甚至下降。而人工恢复情景下,碳密度变化趋势则有所不同。在多种森林干扰与经营管理措施组合方案中,当森林火灾干扰比例为0.01/10a和森林管理措施面积比例为0.02/10a时,川西地区森林地上碳储量提升最大且碳密度呈持续增加趋势。该情景下,2070年森林碳储量及碳密度分别将达到807.76Tg和33.33Mg/hm2,较2020年分别增加了72.97%和12.21%。2070年人工恢复情景下森林碳储量和碳密度较于自然恢复情景下分别高3.4%和8.5%。由此可见,通过人工恢复措施优化将有助于突破川西地区森林固碳能力的自然恢复瓶颈,提升区域森林生态系统对未来气候的适应能力,促进未来气候下区域森林碳储量的持续增长。

关键词：气候变化森林地上碳储量森林恢复森林管理措施森林干扰 LANDIS PRO模型

Regulating zinc ion transport behavior and solvated structure towards stable aqueous Zn metal batteries

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Journal of Energy Chemistry 2024年第6期93卷 609-626,I0015页

作者： Qiang Ma Aoen Ma Shanguang Lv Bowen Qin yali xu Xianxiang Zeng Wei Ling Yuan Liu Xiongwei Wu College of Materials Engineering Henan International Joint Laboratory of Rare Earth Composite MaterialsHenan University of EngineeringZhengzhou 451191HenanChina Nanozyme Medical Center School of Basic Medical SciencesZhengzhou UniversityZhengzhou 450001HenanChina School of Chemistry and Materials Science Hunan Agricultural UniversityChangsha 410125HunanChina College of Electrical and Information Engineering Hunan UniversityChangsha 410082HunanChina Hunan Province Yin Feng New Energy Co.Ltd. Changsha 410019HunanChina

Aqueous Zn metal batteries(AZMBs)with intrinsic safety,high energy density and low cost have been regarded as promising electrochemical energy storage ***,the parasitic reaction on metallic Zn anode and the incompatibility between electrode and electrolytes lead to the deterioration of electrochemical performance of AZMBs during the *** critical point to achieve the stable cycling of AZMBs is to properly regulate the zinc ion solvated structure and transfer behavior between metallic Zn anode and *** recent years,numerous achievements have been made to resolve the formation of Zn dendrite and interface incompatible issues faced by AZMBs via optimizing the sheath structure and transport capability of zinc ions at electrode-electrolyte *** this review,the challenges for metallic Zn anode and electrode-electrolyte interface in AZMBs including dendrite formation and interface characteristics are *** the influences of different strategies involving designing advanced electrode structu re,artificial solid electrolyte interphase(SEI)on Zn anode and electrolyte engineering to regulate zinc ion solvated sheath structure and transport behavior are summarized and ***,the perspectives for the future development of design strategies for dendrite-free Zn metal anode and long lifespan AZMBs are also given.

关键词： aqueous Zn metal batteries Zn metal anode Transport behavior Solvated structure Dendrite-free

The signaling pathway in modulating bone metabolism after dental implant in diabetes

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BIOCELL 2021年第6期45卷 1509-1519页

作者： XIAOMEI HAN SHUYING ZHANG YIFU WANG CHANGE QI PENGNYU GUO yali xu GUANGHUI LYU Department of Oral Implantology Affiliated Hospital of Chifeng UniversityChifeng024000China

Diabetes Mellitus is a systematic disease with complications in multi-organs,including decreased implant osseointegration and a high failure rate of dental *** evidence indicates that the signaling pathway directly impacts the process of bone metabolism and inflammatory response implicated with dental implants in diabetic *** review summarizes the recent advance in signaling pathways regulate osseointegration and inflammatory response in dental transplantation,aiming to identify the potential therapeutic target to reduce the dental transplant failure in diabetes patients,with emphasis on the surface characteristics of the implant,inflammatory signaling,AMPK,PPARγ,WNT,ROS,and adiponectin signaling.

关键词： Diabetes Osseointegration Titanium Wnt ROS Adiponectin PPARγ Dental transplant

Enhanced Potassium‑Ion Storage of the 3D Carbon Superstructure by Manipulating the Nitrogen‑Doped Species and Morphology

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Nano-Micro Letters 2021年第1期13卷 1-14页

作者： Yanhua Li Kui Xiao Cong Huang Jin Wang Ming Gao Aiping Hu Qunli Tang Binbin Fan yali xu Xiaohua Chen College of Materials Science and Engineering Hunan UniversityChangsha 410082People’s Republic of China College of Materials and Chemistry Engineering Hunan Institute of TechnologyHengyang 421002People’s Republic of China Zhuzhou Times New Material Technology Co. LTDZhuzhou 412007People’s Republic of China

Potassium-ion batteries(PIBs)are attractive for gridscale energy storage due to the abundant potassium resource and high energy *** key to achieving high-performance and large-scale energy storage technology lies in seeking eco-efficient synthetic processes to the design of suitable anode ***,a spherical sponge-like carbon superstructure(NCS)assembled by 2D nanosheets is rationally and efficiently designed for K+*** optimized NCS electrode exhibits an outstanding rate capability,high reversible specific capacity(250 mAh g^(−1) at 200 mA g^(−1) after 300 cycles),and promising cycling performance(205 mAh g^(−1) at 1000 mA g^(−1) after 2000 cycles).The superior performance can be attributed to the unique robust spherical structure and 3D electrical transfer network together with nitrogen-rich ***,the regulation of the nitrogen doping types and morphology of NCS-5 is also discussed in detail based on the experiments results and density functional theory *** strategy for manipulating the structure and properties of 3D materials is expected to meet the grand challenges for advanced carbon materials as high-performance PIB anodes in practical applications.

关键词： Polyimide Nitrogen-doped Potassium-ion battery 3D carbon material

Ultrasound-Targeted SDF-1-loaded Microbubble Destruction Promoting the Homing and Repairing Capability of Hypoxic Preconditioned Mesenchymal Stem Cells after Myocardial Ischemia

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Ultrasound-Targeted SDF-1-loaded Microbubble Destruction Pro...

Changes in the detection of human epidermal growth factor receptor 2 gene(Her-2)status for Her-2 fluorescent in situ hybridization testing

中国超声医学工程学会第十三届全国超声心动图学术会议

作者： yali xu Xinqiao Hospital The Third Military Medical University

Background:To study the efficacy of intravenous MSCs transplantation under diagnostic ultrasound irradiated SDF-1-loaded Microbubble on the improvement of MSCs homing and cardiac function after rat myocardial ***:Covalent binding method was used to prepare SDF-l-loaded *** were cultured in hypoxic environment(1%O2,94%N2,5%CO2) for 24 *** was used to detect the surface CXCR4 on MSCs;Transwell migration assay was performed to evaluate the migration ability of *** number of GFP-positive cells within ischemic myocardium in the four groups was *** 7 d implantation of unlabeled MSCs,western blot was performed to analyze SDF-1 and VEGF;HE staining to detect the capillary density(CD);and echocardiography to evaluate the left ventricular systolic ***:SDF-1 loaded microbubbles were successfully *** hypoxic precondition,the proportion of MSCs expressed membrane CXCR4 was increased from(0.86±0.21)%to(8.52±2.17)%,and to(15.62±3.65)%after UTMD *** number of successfully migrated cells in MSC±UMSDF-1 group(185±20) was significantly more than that of the MSC±UM group(95±10) and of the control group(43±7),and sharply reduced to(62±9) after AMD3100 pre-treatment,all P<*** number of GFP-positive MSCs(58 ± 14) in MSC±UMSDF-1 group was 1.27-fold higher than of MSC±UM group(46±8) and 2.12-flod greater than MSC group(28±5).The CD in the MSC±UMSDF-1 group was much greater than that of the other three ***-1 and VEGF level reach the highest in the MSC±UMSDF-1 group,followed by the MSC+UM,the MSC,and the control *** differences of LVEF were indicated between the MSC+UMSDF-1 group(67.83 ± 5.78)%and the MSC+UM group(58.83 ± 5.50)%,the MSC group(48.74±3.13)%and the control group(39.80±4.51)%,all P<***:The homing and repairing capability of MSCs in post-MI rats were successfully improved after hypoxic preconditioning MSCs implantation mediated by ultrasound-targeted SDF-1-loaded microbubbl

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Chinese Medical Journal 2022年第7期135卷 849-850页

作者： Ying xu Changjun Wang yali xu Bo Pan Qiang Sun Department of Breast Surgery Peking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100730China

Breast cancer(BC)is among the commonly diagnosed malignancies,which displaced lung cancer to become the most leading diagnosed cancer worldwide in 2020.^([1])Approximately 15%to 20%of BC patients are positive for the human epidermal growth factor receptor 2 gene(Her-2)and exhibits a high degree of ***,the definition of Her-2 positivity remains controversial and fluctuating.

关键词： cancer lung Breast

Efficiency improvement for post-sulfurized CIGS solar cells enabled by in situ Na doping

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Journal of Energy Chemistry 2025年第2期101卷 324-332页

作者： Zeran Gao Yuchen Xiong Jiawen Wang Shanshan Tian Wanlei Dai Haoyu xu Xinzhan Wang Chao Gao yali Sun Wei Yu National-Local Joint Engineering Laboratory of New Energy Photovoltaic Devices Key Laboratory of Brain-like Neuromorphic Devices and Systems of Hebei Province Hebei University

Despite sulfurization offers the advantage of improving the photovoltaic performance in preparing Cu（In,Ga）Se2（CIGS） absorbers,deep level defects in the absorber and poor energy level alignment on the front surface are still main obstacles limiting the improvement of power co nversion efficiency（PCE） in sulfided CIGS solar ***,an in-situ Na doping strategy is proposed,in which the tailing effect of crystal growth is used to promote the sulfurization of CIGS *** is found that the grain growth is supported by Na incorporating due to the enrichment of NaSexnear the upper *** high soluble Na during grain growth can not only suppress intrinsic InCudonor defects in the absorber,but also tailor S distribution in bulk and the band alignment at the heterojunction,which are both beneficial for the effective electron ***,the Na aggregation near the bottom of the absorber also contributes to the crystalline quality increasing and favorable ultra-thin MoSe2formation at back contact,resulting in a reduced barrier height conducive to hole *** of the champion device is as high as 16.76% with a 28% *** research offers new insights into synthesizing CIGS solar cells and other chalcogenide solar cells with superior cell performance when using an intense sulfurization process.

关键词： CBO CIGS Defect In situ doping Sulfurization

超声靶向微泡破坏技术调控星形胶质细胞联合神经干细胞移植对创伤性脑损伤小鼠神经功能修复的实验研究

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临床超声医学杂志 2025年第02期27卷 89-96页

作者：黎清龙段茂巩寰李苇朱琼李海艳唐君辉徐亚丽陆军军医大学第二附属医院超声科武警河北省总队石家庄市支队卫生队中国人民解放军陆军第九五三医院超声科中国人民解放军西藏军区总医院超声科

目的探讨超声靶向微泡破坏技术（UTMD）调控星形胶质细胞（AS）联合神经干细胞（NSCs）移植在创伤性脑损伤（TBI）小鼠神经功能修复中的应用价值及其作用机制。方法将50只小鼠随机分为对照组、TBI组、UTMD组、UTMD+NSCs组及UTMD+NSCs... 详细信息

目的探讨超声靶向微泡破坏技术（UTMD）调控星形胶质细胞（AS）联合神经干细胞（NSCs）移植在创伤性脑损伤（TBI）小鼠神经功能修复中的应用价值及其作用机制。方法将50只小鼠随机分为对照组、TBI组、UTMD组、UTMD+NSCs组及UTMD+NSCs+AS组，每组各10只，其中对照组为正常小鼠且未进行任何处理；其余各组小鼠使用改良Feeney法建立TBI模型，建模1 d后进行分组治疗，每3天治疗1次，共治疗3次，具体方法：TBI组仅建模，UTMD组接受UTMD开放血脑屏障，UTMD+NSCs组接受UTMD开放血脑屏障联合NSCs移植，UTMD+NSCs+AS组接受UTMD开放血脑屏障联合NSCs和AS移植。于治疗第1、4、8、12天采用改良神经功能损伤程度评分（mNSS）评估神经功能损伤程度；于治疗第12天应用MRI检查各组小鼠脑组织水肿体积；同时采用酶联免疫吸附测定法（ELISA）、逆转录聚合酶链式反应法（RT-PCR）检测各组小鼠脑组织中神经保护因子[脑源性神经营养因子（BDNF）、胶质细胞源性神经营养因子（GDNF）、神经生长因子（NGF）、碱性成纤维细胞生长因子（bFGF）]和神经损伤因子[中枢神经系统特异性蛋白（S100B）、热休克蛋白70(HSP70)、半胱氨酸蛋白酶-3(Caspase-3)]表达水平，比较各组上述检查结果的差异。结果治疗第1、4、8、12天，UTMD+NSCs+AS组、UTMD+NSCs组、UTMD组、TBI组mNSS评分均高于对照组，差异均有统计学意义（均P<0.05）。治疗第1、4天，UTMD+NSCs+AS组、UTMD+NSCs组、UTMD组、TBI组mNSS评分两两比较差异均无统计学意义。治疗第8天，UTMD+NSCs+AS组mNSS评分低于UTMD组、TBI组，差异均有统计学意义（均P<0.05）；其余组间两两比较差异均无统计学意义。治疗第12天，UTMD+NSCs+AS组mNSS评分低于UTMD+NSCs组、UTMD组、TBI组，UTMD+NSCs组mNSS评分低于UTMD组、TBI组，差异均有统计学意义（均P<0.05）;UTMD组与TBI组比较差异无统计学意义。治疗第12天，TBI组、UTMD组、UTMD+NSCs组、UTMD+NSCs+AS组小鼠脑组织水肿体积分别为（8.38±0.50）mm3、（7.47±0.28）mm3、（5.56±1.45）mm3、（1.68±0.14）mm3，呈逐渐降低趋势，但各组比较差异无统计学意义。ELISA检测结果显示，UTMD+NSCs+AS组BDNF、GDNF、NGF、bFGF表达水平均高于UTMD+NSCs组、UTMD组、TBI组，S100B、HSP70、Caspase-3表达水平均低于UTMD+NSCs组、UTMD组、TBI组，差异均有统计学意义（均P<0.05）;RT-PCR检测结果显示，UTMD+NSCs+AS组GDNF、NGF、bFGF表达水平均高于UTMD+NSCs组、UTMD组、TBI组，BDNF表达水平高于UTMD组、TBI组、对照组，S100B、HSP70表达水平均低于UTMD+NSCs组、UTMD组、TBI组，Caspase-3表达水平低于UTMD组、TBI组，差异均有统计学意义（均P<0.05）。结论 UTMD调控AS联合NSCs移植能够显著改善TBI小鼠生化微环境，通过上调神经保护因子表达并下调神经损伤因子表达，可促进TBI小鼠神经功能修复。

关键词：超声靶向微泡破坏技术星形胶质细胞神经干细胞神经功能修复创伤性脑损伤,小鼠

Impact of microbubble enhanced, pulsed, focused ultrasound on tumor circulation of subcutaneous VX2 cancer

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Chinese Medical Journal 2014年第14期127卷 2605-2611页

作者： Li Peijing Zhu Mei xu yali Zhao Yang Gao Shunji Liu Zheng Gao Yun-hua Third Mil Med Univ Dept Ultrasound Xinqiao Hosp Chongqing 400037 Peoples R China Gen Hosp Jinan Mil Area Dept Ultrasound Jinan 250000 Shandong Peoples R China Kunming Med Coll Dept Ultrasound Affiliated Hosp 1 Kunming 650032 Yunnan Peoples R China

Background Intravascular microbubble-enhanced acoustic cavitation is capable of disrupting the vascular walls of capillaries and small vessels. This study was designed to investigate the impact of microbubble-enhanced, pulsed and focused ultrasound （MEUS） on the blood perfusion of subcutaneous VX2 tumors in rabbits. Methods Subcutaneous VX2 cancers in twenty New Zealand rabbits were treated by combining high-pressure amplitude, pulsed and focused therapeutic ultrasound （TUS） and intravenous microbubble injections. The TUS transducer was operated with a peak negative pressure of 4.6 MPa and a duty cycle of 0.41%. Controls were subcutaneous VX2 cancers treated with TUS or microbubbles only. Contrast-enhanced ultrasound （CEUS） and intravenous Evans Blue （EB） perfusion were performed to assess the tumor circulation. The tumor microvascular disruption was assessed by histological examination. Results CEUS showed that the tumor circulation almost vanished after MEUS treatment. The average peak grayscale value （GSV） of tumor CEUS dropped significantly from 84.1±22.4 to 15.8±10.8 in the MEUS-treated tumors but no significant GSV changes were found in tumors in the two control groups. The mean tumor EB content of the MEUS-treated tumors was significantly lower than that of the controls. Histological examination found scattered tumor microvascular disruption with intercellular edema after MEUS treatment. Conclusion The tumor circulation of VX2 cancers can be arrested or significantly reduced by MEUS due to microvascular disruption. Chin M~.cl ,I 2014：127 （14）： 2605-2611

关键词： VX2 tumor circulation therapeutic ultrasound microbubble contrast-enhanced ultrasound