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安徽省生态系统服务价值与景观生态风险时空协同研究

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云南农业大学学报（社会科学版） 2024年第1期18卷 130-140页

作者：付丹阳魏靖阳安徽农业大学经济管理学院安徽合肥230036 安徽农业大学国土资源研究所安徽合肥230036

摸清生态系统服务价值家底,科学防范治理生态风险,可为地区在“两山”政策背景下保障绿色可持续发展提供理论支撑,给出化人地“矛盾”为“和谐”思路。鉴于近20年间安徽省经济增长突出、人地矛盾凸显,以安徽省为研究区域,基于2000—202... 详细信息

摸清生态系统服务价值家底,科学防范治理生态风险,可为地区在“两山”政策背景下保障绿色可持续发展提供理论支撑,给出化人地“矛盾”为“和谐”思路。鉴于近20年间安徽省经济增长突出、人地矛盾凸显,以安徽省为研究区域,基于2000—2020年土地利用数据,构建生态系统服务价值、景观生态风险评价模型,综合运用空间相关分析、地理加权回归及地理探测器等研究方法,探究安徽省生态系统服务价值与景观生态风险的时空演变趋势及空间影响关系。结果表明:(1)20年间安徽省生态系统服务价值(ESV)下滑明显,流域与山区价值较高,中部北部耕地价值较低,景观生态风险(ERI)在20年间逐渐好转。(2)研究区ESV与ERI的莫兰指数显著降低,高—高、低—高聚集区减少,且ESV对ERI的激化作用显著减弱。(3)自然、社会因素均能显著驱动ESV,ERI则主要受自然因素驱动。研究表明生态系统稳定性对ESV与ERI间的关系有显著影响,未来应持续保护南部山区林地,重点治理境内水域生态环境,提升草地景观整体性,科学划定城镇开发边界,增强安徽省生态系统稳定度。

关键词：生态系统服务价值景观生态风险地理加权回归地理探测器

最优尺度下新安江流域景观生态安全格局及其影响因素

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安徽农业大学学报（社会科学版） 2024年第2期33卷 112-123页

作者：於冉魏靖阳储昭君安徽农业大学国土资源研究所安徽合肥230036 安徽农业大学经济管理学院安徽合肥230036

新安江流域作为首个跨省生态补偿政策试点,其政策实施对于地区城市整体生态治理具有正向促进作用,分析新安江流域城市政策实施前、中、后期的景观生态风险时空演变趋势及驱动因素,可为该地区及同类区域生态治理及风险防范提供科学支撑... 详细信息

新安江流域作为首个跨省生态补偿政策试点,其政策实施对于地区城市整体生态治理具有正向促进作用,分析新安江流域城市政策实施前、中、后期的景观生态风险时空演变趋势及驱动因素,可为该地区及同类区域生态治理及风险防范提供科学支撑。基于2000、2010、2020年三期土地利用遥感数据,寻求评价景观生态风险的最优尺度,分析其时空演变趋势,并借助地理探测器计算空间因子的影响程度。研究表明:研究区最优研究尺度为粒度70 m、幅度11 km;2000—2020年,研究区景观生态风险显著降低,较高以上风险区面积大幅缩减,生态风险呈显著的空间正相关性,且相关程度不断减弱,高值聚集区逐渐减少;研究区内土地利用强度与坡度对景观生态风险驱动效应最强,各因子交互探测时可显著提高解释能力。研究区各市景观生态风险空间差异显著,需加强对草地、水域景观整体性的维护,进一步加强新安江流域城市生态稳定性,同时应考虑地区用地结构及风险状况,针对性采取风险治理措施。

关键词：尺度效应景观生态风险时空演变地理探测器新安江流域城市

轻度抑郁障碍患者五音疗法治疗前后脑改变的磁共振成像研究

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中国医药科学 2024年第13期14卷 137-141,185页

作者：佟靖雯魏景洋王阔梁爽牡丹江医学院医学影像学院黑龙江牡丹江157000 牡丹江医学院附属第二医院影像科黑龙江牡丹江157000

目的基于多模态磁共振评估五音疗法治疗轻度抑郁障碍患者治疗前后的脑改变。方法纳入自2021年1月至2022年6月精神心理科就诊的轻度抑郁障碍患者250例,按照随机数表法分为试验组200例,对照组50例。试验组给予为期8周的五音疗法治疗干预,... 详细信息

目的基于多模态磁共振评估五音疗法治疗轻度抑郁障碍患者治疗前后的脑改变。方法纳入自2021年1月至2022年6月精神心理科就诊的轻度抑郁障碍患者250例,按照随机数表法分为试验组200例,对照组50例。试验组给予为期8周的五音疗法治疗干预,对照组仅常规随访。通过比较两组患者治疗前后心理学量表差异判定五音疗法疗效。比较两组全脑结构、差异脑区及相应脑区弥散张量成像各向异性分数(FA)值的变化,表征五音疗法治疗有效的轻度抑郁障碍患者的特异性脑改变。结果试验组经五音疗法治疗后17项汉密尔顿抑郁评分标准(HAMD)和汉密尔顿焦虑量表(HAMA)评分减低,差异有统计学意义(P0.05)。结论五音疗法对于轻度抑郁障碍患者的治疗效果显著,并存在不同脑区的特异性改变,多模态磁共振可以用作为表征抑郁障碍患者脑改变的神经影像学工具,为临床诊断及评估抑郁障碍提供定量影像学支持。

关键词：多模态磁共振成像轻度抑郁五音疗法脑结构

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Detrital Zircon U-Pb Geochronology of the Xilin Group: Constraints for the Early Paleozoic Tectonic Evolution of the Songliao Massif

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Acta Geologica Sinica(English Edition) 2021年第6期95卷 2063-2074页

作者： SANG Tianjiao PEI Fuping XU Wenliang WANG Zhiwei JIAO Ji wei jingyang WANG Yipeng College of Earth Sciences Jilin UniversityChangchun 130061China Key Laboratory of Regional Geology and Mineralization Hebei GEO UniversityShijiazhuang 050031China

The Xilin Group, composed of the Chenming, Laodaomiaogou, Qianshan and Wuxingzhen formations, is one of the Early Paleozoic terranes in the eastern Songliao Massif, mainly consisting of thick layers of fine clastic and carbonate rocks. This study presents LA-ICP-MS zircon U-Pb geochronological data for the Laodaomiaogou and Qianshan formations, further constraining their provenance and the Early Paleozoic tectonic evolution of the Songliao Massif on the eastern Central Asian Orogenic Belt. Most zircons from the Laodaomiaogou and Qianshan formations show magmatic oscillatory zoning and high Th/U ratios(0.26–2.41). Zircon U-Pb dating results indicate that the detrital zircons from the silty mudstone of the Laodaomiaogou Formation yield peak ages of 634 Ma, 775 Ma, 820 Ma, 880 Ma and 927 Ma, as well as multi-episodic Archean to Paleoproterozoic and Mesoproterozoic ages(1405–643 Ma), implying its deposition time is younger than ~634 Ma. Furthermore, the occurrence of Early Cambrian fossils indicates that the Laodaomiaogou Formation was deposited during the late stage of the Early Cambrian(~514 Ma). The zircons from the K-bentonite of the Qianshan Formation show four peak ages of 444 Ma, 471 Ma, 489 Ma and 518 Ma and the youngest age peak of 444 ± 4 Ma(n = 6) indicates that the Qianshan Formation was deposited during the Late Ordovician. In addition, the peak ages of the detrital zircons in the silty mudstone of the Qianshan Formation are 472 Ma and 498 Ma, as well as two other concordant points with;Pb/;Pb apparent ages of 1824 Ma and 1985 Ma. The dating results in this study, together with published data, indicate the absence of Pan-African magmatic events in the Songliao Massif prior to the initial deposition of the Xilin Group, in contrast to those distributed widely in the Jiamusi Massif. Taken together, we conclude that the depositional provenance of the Laodaomiaogou and Qianshan formations was derived from the Songliao Massif. Furthermore, the characteristics of

关键词： zircon U-Pb geochronology tectonic implications Early Paleozoic Xilin Group Songliao Massif

Synthesis,crystal structure of a novel yttrium (Ⅲ) coordination compound supported by typical plenary Dawson cluster

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Chinese Science Bulletin 2003年第23期48卷 2585-2588页

作者： WANG Jingping, wei Meilin & NIU jingyang School of Chemistry and Chemical Engineering, Henan University, Kaifeng 475001, China Correspondence should be addressed to Niu jingyang (e-mail: jyniu@ ***) School of Chemistry and Chemical Engineering Henan University Kaifeng China

A novel yttrium (III) coordination compound supported by plenary Dawson cluster, [Y(NMP)5(H2O)2] [Y(NMP)4(H2O)2(P2Mo18O62)] · NMP · 5.5 H2O, (NMP = N-methyl-2-pyrrolidone) has been synthesized by reaction of α-H6P2Mo18O62 · nH2O, Y2O3 and NMP in water. The results of the single crystal X-ray diffraction analyses show the title compound forms a neutral and discrete cluster through [P2Mo18O62]6−] being coordinated to [Y(NMP)4(H2O)2]3+ through its terminal oxygen atom.

关键词：晶体结构钇 X射线衍射分析氧原子

Recursive filtering of multi-rate cyber-physical systems with unknown inputs under adaptive event-triggered mechanisms

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Frontiers of Information Technology & Electronic Engineering 2024年第2期25卷 250-259页

作者： Ying SUN Miaomiao FU jingyang MAO Guoliang wei Business School University of Shanghai for Science and TechnologyShanghai200093China Shanghai Caoyang Vocational School Shanghai200333China School of Electrical and Electronic Engineering Shanghai Institute of TechnologyShanghai201418China School of Intelligent Emergency Management University of Shanghai for Science and TechnologyShanghai200093China

Cyber-physical systems(CPSs)take on the characteristics of both multiple rates of information collection and processing and the dependency on information *** purpose of this paper is to develop a joint recursive filtering scheme that estimates both unknown inputs and system states for multi-rate CPSs with unknown *** cyberspace,the information transmission between the local joint filter and the sensors is governed by an adaptive event-triggered ***,the desired parameters of joint filters are determined by a set of algebraic matrix equations in a recursive way,and a sufficient condition verifying the boundedness of filtering error covariance is found by resorting to some algebraic operation.A state fusion estimation scheme that uses local state estimation is proposed based on the covariance intersection(CI)based fusion ***,an illustrative example demonstrates the effectiveness of the proposed adaptive event-triggered recursive filtering algorithm.

关键词： Cyber-physical systems Multi-rate Joint recursive filtering Adaptive event-triggered mechanisms Unknown inputs

Theoretical studies of two-dimensional structure design and topological electronic properties of organic Dirac materials

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ChemPhysMater 2024年第3期3卷 241-251页

作者： Aizhu Wang wei Tan Hongbo Zhao Hongguang Wang Na Ren Longhua Ding Xin Yu jingyang Peng Institute for Advanced Interdisciplinary Research University of JinanJinan 250022China Institute of Photonic Chips University of Shanghai for Science and TechnologyShanghai 200093China

Owing to the significant development in graphene,an increasing number of studies have been conducted to identify novel two-dimensional(2D)organic materials with Dirac cones and topological *** a series of toy models based on specific lattice patterns has been proposed and demonstrated to possess a Dirac cone,realistic materials corresponding to the lattice models must be identified to achieve excellent properties for practical *** understand factors contributing to the rarity of 2D organic Dirac materials and provide guidance for identifying novel organic Dirac systems,we review recent theoretical studies pertaining to various 2D Dirac models and their corresponding organic Dirac materials,including the Haldane,Kagome,Libe,linecentered honeycomb,and Cairo pentagonal ***,the corresponding structural and topological electronic properties are ***,we investigate the relationship between the existence of Dirac cones and their structural features,as well as the manner by which Dirac points emerge and propagate in these systems.

关键词： Two-dimensional Dirac models Organic Dirac materials Covalent-organic frameworks Metal-organic frameworks Topological electronic properties

延边开山屯地区二叠纪地质体的构造属性:侵入岩及碎屑锆石证据

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岩石学报 2020年第3期36卷 759-780页

作者：魏敬洋裴福萍周皓焦骥王奕朋吉林大学地球科学学院长春130061 自然资源部东北亚矿产资源评价重点实验室长春130061 东北亚生物演化与环境教育部重点实验室长春130026

本文对延边开山屯地区二叠纪侵入岩和地层中的(碎屑)锆石进行了LA-ICP-MS和SIMS U-Pb年代学及Hf同位素的研究,同时对侵入岩进行了全岩地球化学特征的研究,以便制约开山屯地区的构造属性以及延边地区晚古生代-早中生代演化历史。延边开... 详细信息

本文对延边开山屯地区二叠纪侵入岩和地层中的(碎屑)锆石进行了LA-ICP-MS和SIMS U-Pb年代学及Hf同位素的研究,同时对侵入岩进行了全岩地球化学特征的研究,以便制约开山屯地区的构造属性以及延边地区晚古生代-早中生代演化历史。延边开山屯地区大蒜沟组复成分砾岩和岩屑杂砂岩中锆石最年轻峰值年龄为298Ma和293Ma,此外还存在330Ma、366Ma、438Ma、454Ma、479Ma峰值年龄。这些古生代碎屑锆石的εHf(t)值介于-1.14^+15.17之间;开山屯组长石杂砂岩和长石砂岩中的锆石最年轻年龄峰值分别为259Ma和253Ma,此外还存在279Ma、456Ma、476Ma、500Ma、529Ma以及新元古代-古元古代(891~1765Ma)的峰值年龄。其中古生代碎屑锆石的εHf(t)值介于-5.22^+10.15之间。开山屯地区中二叠世闪长岩和晚二叠世辉长闪长岩的形成时代分别为261Ma和256Ma,属于低钾拉斑-中钾钙碱性系列,相对富集轻稀土和大离子亲石元素,亏损重稀土和高场强元素,主要来源于受俯冲流体/熔体交代的亏损地幔楔的部分熔融。综合研究认为,开山屯地区与兴凯地块具有亲缘性;大蒜沟组的沉积时限为早-中二叠世,形成于兴凯地块西部活动大陆边缘的弧前盆地或增生楔环境;开山屯组形成于早-中三叠世,具有双向物源的特点(华北板块和兴凯地块)。早-中二叠世延边地区处于活动大陆边缘的构造背景。延边地区的古亚洲洋于早-中三叠世最终闭合。

关键词：延边地区二叠纪古亚洲洋侵入岩碎屑锆石锆石U-Pb年代学

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基于图像分割的稠密立体匹配算法

光学学报 2019年第3期39卷 240-248页

作者：马瑞浩朱枫吴清潇鲁荣荣魏景阳中国科学院沈阳自动化研究所辽宁沈阳110016 东北大学信息科学与工程学院辽宁沈阳110819 中国科学院光电信息处理重点实验室辽宁沈阳110016

提出一种基于图像分割的稠密立体匹配算法,该算法将灰度-梯度算法与零均值归一化互相关(ZNCC)算法相结合生成匹配代价,利用SLIC(Simple Liner Iterative Cluster)算法对图像进行分割,基于视差图和超像素更新了匹配代价。在视差后处理阶... 详细信息

提出一种基于图像分割的稠密立体匹配算法,该算法将灰度-梯度算法与零均值归一化互相关(ZNCC)算法相结合生成匹配代价,利用SLIC(Simple Liner Iterative Cluster)算法对图像进行分割,基于视差图和超像素更新了匹配代价。在视差后处理阶段,基于左右一致性检验(LRC)、孔洞填充和十字交叉自适应窗口加权中值滤波的方法减小视差图的误匹配率。利用Middlebury数据集的4组图像进行测试,测试结果表明,平均误匹配率为4.99%。

关键词：机器视觉立体匹配算法匹配代价计算方法融合十字交叉自适应窗口加权中值滤波