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增温对芦苇和互花米草叶绿素荧光特性的影响及其与环境因子的关系

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湿地科学 2024年第3期22卷 387-395页

作者：方位达陈皓叶思源江星浩韩宗珠江苏省测绘工程院江苏南京210003 中国地质调查局滨海湿地生物地质重点实验室青岛海洋地质研究所山东青岛266071 海洋地质过程与环境功能实验室崂山实验室山东青岛266237 山东省煤田地质规划勘察研究院山东济南250104 中国海洋大学海洋地球科学学院山东青岛266100

为了研究芦苇(Phragmites australis)和互花米草(Spartina alterniflora)叶绿素荧光特性和环境因子对模拟增温的响应,以江苏盐城滨海湿地芦苇和互花米草为研究对象,分别设置增温组和对照组,测定环境参数和叶绿素荧光参数,分析增温对芦... 详细信息

为了研究芦苇(Phragmites australis)和互花米草(Spartina alterniflora)叶绿素荧光特性和环境因子对模拟增温的响应,以江苏盐城滨海湿地芦苇和互花米草为研究对象,分别设置增温组和对照组,测定环境参数和叶绿素荧光参数,分析增温对芦苇和互花米草叶绿素荧光参数的影响及其与环境因子的关系。研究结果表明,增温使芦苇叶片的实际光化学量子效率、非光化学猝灭系数和表观电子传递效率整体都有所下降,但互花米草除非光化学猝灭系数外,其他参数变化规律相反;芦苇对照组叶片的表观电子传递效率与不同深度土壤温度显著相关,增温组表观电子传递效率与20 cm深度土壤电导率显著相关;互花米草对照组叶片的非光化学猝灭系数和表观电子传递效率与20 cm深度土壤含水率、电导率和温度显著相关,增温组表观电子传递效率与10 cm深度土壤温度显著相关,对照组和增温组实际光化学量子效率都与光照强度显著相关;在增温条件下,芦苇PSⅡ反应中心活性和热稳定性降低,同化大气CO_(2)的能力(固碳能力)相较于互花米草处于劣势;在增温条件下,土壤水盐因子对芦苇光合作用过程的影响增强,对互花米草则相反。

关键词：增温芦苇互花米草叶绿素荧光特性滨海湿地

Ecosystem Service Value for the Common Reed Wetlands in the Liaohe Delta, Northeast China

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Open Journal of Ecology 2016年第3期6卷 129-137页

作者： siyuan ye Edward A. Laws Robert Costanza Hans Brix Key Laboratory of Coastal Wetland Biogeosciences China Geological Survey Qingdao Institute of Marine Geology CGS Ministry of Land and Resources Qingdao China Department of Environmental Sciences School of the Coast and Environment Louisiana State University Baton Rouge USA Crawford School of Public Policy The Australian National University Canberra Australia Department of Bioscience Aarhus University Aarhus Denmark

The largest reed field in the world, with an area of 1000 km2 in 1953, is located in the Liaohe Delta, which lies in the five-point-in-a-line economic strategic zone of northeastern China. However, the area of reeds has declined dramatically in recent years to accommodate oil field infrastructure and societal developments. Although the direct and indirect services provided by such wetlands make valuable contributions to human welfare, wetlands are often given little weight in policy decisions, because ecosystem services are not fully “captured” in commercial markets or adequately quantified in terms comparable with the values of economic services and manufactured capital. In this study the value of 10 of 17 ecosystem services provided by the reed wetlands in the Liaohe Delta was estimated by using market pricing, shadow projects, and benefit transfer methods. The value of the 10 services provided by the 800 km2 of reed wetland totaled approximately US $2.68 billion. Remarkably, aquaculture and the production of pulp from reeds accounted for only 19% of the total value of the reed wetland services. About 32% of the value of the ecosystem services was attributed to non-consumptive recreation, an easily perceived service that may act as a powerful incentive for sustainable management of this wetland ecosystem. The results of this study should help not only to guide management decisions with respect to this particular wetland but also to serve as an example of the approach to be taken with respect to valuation of similarly endangered wetlands throughout China.

关键词： China Common Reeds Ecosystem Services Liaohe Delta Valuation

青岛海洋地质研究所海岸带地质工作进展与展望

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海洋地质与第四纪地质 2024年第3期44卷 23-39页

作者：陈斌徐刚周良勇赵广明曹珂高茂生叶思源刘健侯国华段晓勇陈小英印萍中国地质调查局青岛海洋地质研究所青岛266237 中国地质调查局海岸带和大陆架地质研究中心青岛266237

海岸带是地球多圈层交互带内地质作用最活跃、人类活动最密集的地带,是开展综合地质调查与研究、推动经济社会高质量发展的关键区域。青岛海洋地质研究所的海岸带地质工作自建所以来,一直按照支撑国家需求和服务经济社会发展为导向,主... 详细信息

海岸带是地球多圈层交互带内地质作用最活跃、人类活动最密集的地带,是开展综合地质调查与研究、推动经济社会高质量发展的关键区域。青岛海洋地质研究所的海岸带地质工作自建所以来,一直按照支撑国家需求和服务经济社会发展为导向,主要经历了萌芽发展、快速发展、蓬勃发展3个阶段。作为中国地质调查局海岸带工作的主要牵头单位之一,组织实施了一系列海岸带地质调查工作,特别是在辽东湾、渤海湾西岸、黄河三角洲、莱州湾、山东半岛、江苏沿岸、长江三角洲、闽浙沿岸等海岸带地区开展了重大比例尺的调查,大幅提高了我国海岸带调查程度,提升了海岸带基础地质认知水平,充分发挥了地质工作基础性、公益性、战略性的作用,为国家重大战略实施和经济社会高质量发展提供了有力支撑。新时代条件下,我们应大力加强海岸带地质科技创新能力,全面提高海岸带基础地质调查程度,加快建设海岸带地质综合监测体系,快速提升海岸带工作公益服务水平,推动海岸带地质工作高质量发展。

关键词：海岸带发展历程主要成果工作展望科技创新

Novel phenanthrene/bibenzyl trimers from the tubers of Bletilla striata attenuate neuroinﬂammation via inhibition of NF-κB signaling pathway

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Chinese Journal of Natural Medicines 2024年第5期22卷 441-454页

作者： SHAO siyuan SUN Mohan MA Xianjie JIANG Jianwei TIAN Jinying ZHANG Jianjun ye Fei LI Shuai State Key Laboratory of Bioactive Substance and Function of Natural Medicines Institute of Materia MedicaChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100050China

Five novel(9,10-dihydro)phenanthrene and bibenzyl trimers,as well as two previously identified biphenanthrenes and bibenzyls,were isolated from the tubers of Bletilla striata.Their structures were elucidated through comprehensive analyses of NMR and HRESIMS spectroscopic data.The absolute configurations of these compounds were determined by calculating rotational energy barriers and comparison of experimental and calculated ECD curves.Compounds 5b and 6 exhibited inhibitory effects on LPS-induced NO production in BV-2 cells,with IC_(50) values of 12.59±0.40 and 15.59±0.83μmol·L^(-1),respectively.A mechanistic study suggested that these compounds may attenuate neuroinflammation by reducing the activation of the AKT/IκB/NF-κB signaling pathway.Additionally,compounds 3a,6,and 7 demonstrated significant PTP1B inhibitory activities,with IC_(50) values of 1.52±0.34,1.39±0.11,and 1.78±0.01μmol·L^(-1),respectively.Further investigation revealed that compound 3a might inhibit LPS-induced PTP1B overexpression and NF-κB activation,thereby mitigating the neuroinflammatory response in BV-2 cells.

关键词： Bletilla striata Phenanthrene/bibenzyl trimer NO inhibition AKT/IκB/NF-κB signaling pathway PTP1B inhibitory effect

Study on the Geo-Environmental Evolution of the Laolonggou Lagoon Under the Impacts of the Caofeidian Reclamation Project in Hebei Province

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Journal of Ocean University of China 2020年第5期19卷 1062-1072页

作者： YIN Cong ye siyuan FENG Xiuli YIN Yanhong Key Laboratory of Submarine Geosciences and Prospecting Techniques Ministry of Education and College of Marine GeosciencesOcean University of ChinaQingdao 266100China Key Laboratory of Coastal Wetland Biogeosciences China Geological SurveyQingdao 266071China North China Sea Bureau Ministry of Natural ResourcesQingdao 266033China Qingdao Institute of Marine Geology China Geological SurveyQingdao 266071China

The Caofeidian Reclamation Project has been the biggest reclamation project in China so far, in which 310 km^2 sea areas were reclaimed along the coast of Hebei Province, and it also bring about many problems and defects for large reclaiming area. The study focuses on the influences of the engineering exerted on evolution of the Laolonggou Lagoon with the methods of topographical measurement and surface sediment analysis. The results demonstrate that the topographical changes in the Laolonggou Lagoon had been controlled obviously by the engineering at three stages. Besides, blocking and reopening of the shoal tidal channel also affected the geological environment of the lagoon area. In the aspect of topographical change, the Laolonggou Inlet first experienced deposition after the shoal tidal channel was blocked, followed by short-time eroding for quarrying and cofferdam construction in the east, then depositing slowly after the reclaiming activity ceased, and finally eroding after the shoal tidal channel was reopened. The project, particularly cofferdam construction led to the movement of the Laolonggou Inlet axis from west to east for 50 – 100 m. In the aspect of sediment variation, the reclamation project and hydrodynamic change resulted in the variation in compositions and distribution pattern. The western lagoon area has become land mainly constituted by silt, while the sediments in the eastern area have turned finer in size. After the shoal tidal channel was reopened, the current velocity in the Laolonggou Inlet has been enhanced, making the sediments at the bottom become coarser. The sediments around the Caofeidian foreland went through a process of changing in grain size from fine to coarse and back to fine again, and the sediments are mainly constituted by silt at present.

关键词： Laolonggou Lagoon Inlet topographical evolution Caofeidian Reclamation Project shoal tidal channel

Mesenchymal stromal cells modulate unfolded protein response and preserve β-cell mass in type 1 diabetes

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BIOCELL 2024年第7期48卷 1115-1126页

作者： siyuan LIU YUAN ZHAO YU YU DOU ye QIAN WANG ZHAOYAN WANG ZUO LUAN Department of Pediatrics The Sixth Medical CenterChinese PLA General HospitalBeijing100037China

Introduction:Transplantation of mesenchymal stromal cells(MSCs)is a promising therapy for type 1 diabetes(T1D).However,whether the infused MSCs affect the endoplasmic reticulum stress or subsequent unfolded protein response inβcells remains unclear.Methods:To investigate this,we induced early-onset T1D in non-obese diabetic mice using streptozotocin.Subsequently,T1D mice were randomly assigned to receive either MSCs or phosphate-buffered saline.We observed the in vivo homing of MSCs and assessed their effectiveness by analyzing blood glucose levels,body weight,histopathology,pancreatic protein expression,and serum levels of cytokines,proinsulin,and C-peptide.Results:Infused MSCs were found in the lungs,liver,spleen,and pancreas of T1D mice.They exhibited various effects,including reducing blood glucose levels,regulating immunity,inhibiting inﬂammation,increasingβ-cell areas,and reducing the expression of key proteins in the unfolded protein response pathway.Fasting serum proinsulin and C-peptide levels were signiﬁcantly higher in the MSCs treatment group than in the T1D model group.However,there was no signiﬁcant difference in the biomarker ofβ-cell endoplasmic reticulum stress,the ratio of fasting serum proinsulin to C-peptide,between the two groups.Conclusion:Ourﬁndings reveal that MSCs infusion does not alleviate endoplasmic reticulum stress inβcells directly but modulates the unfolded protein response pathway to preserveβ-cell mass and function in T1D mice.

关键词： Type 1 diabetes Mesenchymal stromal cells Endoplasmic reticulum stress Unfolded protein response Non-obese diabetic mice

HUNK inhibits cargo uptake and lysosomal traffic in the caveolar pathway via the AGAP3/ARF6

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Science Bulletin 2024年第2期69卷 173-178页

作者： siyuan Jiang Xiaoqi Han Tihui Liu Ying He Zidong Zhao Tongfeng Liu Shuwen Cheng Jihang Zhang Liqiang Duan Yajuan Liu Tianyou Cheng Yong Liu Qinong ye Shan Gao Zhongda Hospital Medical SchoolAdvanced Institute for Life and HealthSoutheast UniversityNanjing 20096China Medical School of Guizhou University Guiyang 550025China Shanxi Academy of Advanced Research and Innovation Taiyuan 030032China Zhongda Hospital School of Life Sciences and TechnologyAdvanced Institute for Life and HealthSoutheast UniversityNanjing 210096China Nanjing University Medical School Nanjing 210046China Hubei Key Laboratory of Cell Homeostasis College of Life SciencesTaiKang Center for Life and Medical SciencesWuhan UniversityWuhan 430072China Department of Medical Molecular Biology Beijing Institute of BiotechnologyCollaborative Innovation Center for Cancer MedicineBeijing 100850China

Endocytosis is a crucial cellular process that takes up cargos by enclosing them in membrane-bound vesicles,and transports cargos to different parts of the cell,such as the lysosomes[1].Endocytosis is classified into several mechanistically and morphologically pathways,including clathrin-mediated endocytosis(CME)and caveolae-mediated endocytosis(CavME)[1,2].

关键词： endocytosis cargo uptake

Late Quaternary Strata and Carbon Burial Records in the yellow River Delta, China

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Journal of Ocean University of China 2015年第3期14卷 446-456页

作者： ZHAO Guangming ye siyuan LI Guangxue DING Xigui YUAN Hongming College of Marine Geo-science Ocean University of China The Key Laboratory of Coastal Wetlands Biogeosciences China Geologic Survey The Key Laboratory of Marine Hydrocarbon Resource and Geology Ministry of Land and Resources

Sediment carbon sequestration plays an essential role in mitigating atmospheric CO2 increases and the subsequently global greenhouse effect. To clarify the late Quaternary strata and carbon burial records in yellow River delta(YRD), detailed analysis of benthic foraminifera, total carbon(TC), organic carbon(Corg), sedimentary characteristics and moisture contents of sediments, was performed on core ZK3, 30.3 m in length and obtained from YRD in 2007. Eight depositional units(designated U1-U8 in ascending order) were identified. A comprehensive analysis method of historical geography and sedimentary geology was used to determine the precise depositional ages of the modern yellow River delta(MYRD), from which pre-MYRD ages were deduced. The results indicates that the maximum burial rates of TC, inorganic carbon(IC) and Corg occurred in the delta front(U5), and the minimum in the shallow sea(U3). Remarkable high sedimentation rates in the MYRD are responsible for burial efficiency of carbon, with an average rate of Corg burial reaching 2087±251 g(m2 yr)-1, and that of IC reaching 13741±808 g(m2 yr)-1, which are much higher than those of other regions with high contents of Corg. Therefore, YRD has a significant burial efficiency for carbon sequestration.

关键词：大气二氧化碳黄河三角洲晚第四纪地层埋藏中国全球温室效应综合分析方法沉积速率

原辅料对素食香肠品质的影响及对素食香肠嫩度的主成分分析

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食品与发酵工业 2022年第23期48卷 201-208页

作者：叶思源陈林陈琪华广东工业大学轻工化工学院广东广州510006

不同原辅料的种类及添加量对素食香肠的质构有一定影响。该研究通过Warner-Bratzler剪切测试、全质构测试、感官评定以及主成分分析方法,建立素食香肠嫩度综合评价模型,得出主成分1(咀嚼特性)和主成分2(黏性),并结合后续生产需求、素食... 详细信息

不同原辅料的种类及添加量对素食香肠的质构有一定影响。该研究通过Warner-Bratzler剪切测试、全质构测试、感官评定以及主成分分析方法,建立素食香肠嫩度综合评价模型,得出主成分1(咀嚼特性)和主成分2(黏性),并结合后续生产需求、素食配方研究以及口感需求,得出大豆分离蛋白、谷朊粉、马铃薯淀粉、乳液和额外水的最适添加量分别为57.5 g(占总体质量9.9%,下同)、40 g(8.8%)、50 g(8.5%)、110 g(27.8%)和25 g(4.9%)。素食香肠的蒸煮损失率与质构特性相关性不大,说明原辅料的种类和添加量会对素食香肠的评价方法产生变化。主成分分析方法表明,不能将剪切力作为素食香肠嫩度评价的唯一评价指标,应将剪切力与质构特性相结合进行综合评价。该研究为后续素食食品的质构分析、感官评定、嫩度研究以及配方筛选提供了参考。

关键词：素食香肠质构原辅料主成分分析嫩度综合得分评价