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Examining the Spatiotemporal Dynamics and Determinants of Land Urbanization in Prefecture-level Cities,China

Chinese Geographical Science 2024年第1期34卷 19-33页

作者： YANG Zhen ZHU Huxiao zhang xinlin OU Xiangjun School of Geography Geomatics and Planning&Urban-rural Integration Development Research InstituteJiangsu Normal UniversityXuzhou221116China

Examining the spatiotemporal dynamics and determinants of land urbanization is critical for promoting healthy urban development and the rational use of land *** on the dataset consisting of land use change data and selected factors in 2010 and2020,this study used visual analysis to reveal the spatiotemporal dynamics of land urbanization across prefecture-level cities in ***,the driving forces underlying land urbanization were examined by using geographical detector *** are the findings:1)we find that there exist notable spatial variances in land urbanization across prefecture-level ***,the differentiation in land urbanization between the northern and southern cities is more pronounced than that between the coastal and inland cities,or between the eastern and western ***-level cities located in central and western China have experienced the most rapid growth in land ***,the growth rate in northeastern China is the lowest,while the velocity in eastern China remains relatively *** using spatial autocorrelation analysis,this study reveals that the land urbanization level in prefecture-level cities has significant spatial agglomeration.2)We further find that land urbanization in China is influenced by factors related to urban land supply and demand,and urban population growth,economic growth,land financial and political incentive have greater impact on land urbanization than other factors.3)We also find that the impacts of determinants on China’s land urbanization vary over time,the explanatory power of economic development increased,while the explanatory power of state forces *** argue that integrating the supply and demand factors of land urbanization can provide a more comprehensive understanding of the driving mechanisms underlying land urbanization in China and other transitional countries,and help decision-makers in these countries formulate more detailed and specif

关键词： land urbanization spatial pattern influencing factor geographical detector China

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Spatial-temporal Heterogeneity of Green Development Efficiency and Its Influencing Factors in Growing Metropolitan Area: A Case Study for the Xuzhou Metropolitan Area

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Chinese Geographical Science 2020年第2期30卷 352-365页

作者： QIU Fangdao CHEN Yang TAN Juntao LIU Jibin ZHENG Ziyan zhang xinlin School of Geography Geomatics and PlanningJiangsu Normal UniversityXuzhou 221116China Urban-Rural Integration Development Research Institute Jiangsu Normal UniversityXuzhou 221116China Urban and Country Planning and Design Institute of Jilin Province Changchun 130061China

This study analyzed the spatial-temporal heterogeneity of green development efficiency and its influencing factors in the growing Xuzhou Metropolitan Area for the period 2000–*** slacks-based measure(SBM)model,spatial autocorrelation,and the geographically weighted regression(GWR)model were used to conduct the *** conclusions were as follows:first,the overall efficiency of green development of the Xuzhou Metropolitan Area decreased,the regional differences and spatial agglomeration shrunk and differences within the region were the main contributors to the regional differences of green development ***,the counties with high-efficiency green development were distributed along the coast,and along the routes of the Beijing-Shanghai and the Eastern Longhai railways.A developing axis of the high-efficiency counties was the main feature of the spatial pattern for green development ***,regarding spatial correlation and green development efficiency,the High-High type counties in the Xuzhou Metropolitan Area formed a centralized distribution corridor along the inter-provincial border areas of Henan and Jiangsu,whereas the Low-Low type counties were concentrated in the external,marginal parts of the metropolitan ***,the major factors(ranked in decreasing order of impact)influencing green development efficiency were innovation,government regulations,the economic development level,energy consumption,and industrial *** factors exerted their influence to varying extents;the influence of the same factor had different effects in different regions and obvious spatial differences were observed for the different regions.

关键词： growing metropolitan area green development efficiency spatial and temporal heterogeneity influential factors Xuzhou Metropolitan Area,China

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The influence of observation environment on background noise level of gPhone gravimeter

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Geodesy and Geodynamics 2017年第6期8卷 443-447页

作者： Xiaotong zhang Ying Jiang Kun zhang xinlin zhang Institute of Seismology China Earthquake Administration Key Laboratory of Earthquake Geodesy China Earthquake Administration

Based on the observations of 36 gPhone gravimeters in 2015, the background noise levels in the seismic frequency band（200-600 s） and sub-seismic band（1-6 h） are calculated. The differences in the PSD（power spectrum density） of each band of gPhone gravimetric gauges in different surrounding environments were analyzed and compared with Peterson＇s NLNM（new low-noise model） which is derived from the envelope at the power spectrum density of 75 seismograph stations around the world. The results showed that： the influence of station type on the noise magnitude of gPhone gravimeter is very small; The seismic band noise magnitude（hereinafter referred to as SNM） and the sub-seismic band noise magnitude（hereinafter referred to as SSNM） in the coastal gPhone gravimeter are higher than those of inland stations. Although the local hydrological change has a great influence on the gravity observation, the rainfall is not directly relative to the noise magnitude of the instrument. Except 3 coastal stations, the eight stations which had the highest amplitudes in the SNM were located near the seismic belt. This indicates that the SNM of the gPhone Gravimeter may reflect some seismic *** with the NLNM model, the PSD of the gPhone gravimeter is lower than the NLNM model in the long period band（〈3×10^（-5）Hz）, indicating that the gPhone gravimeter is more suitable for detecting long-period signals（〉10 h） than the seismometer.

关键词： gPhone gravimeter Background noise level NLNM Observation environment

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Coseismic gravity and displacement changes of Japan Tohoku earthquake(Mw 9.0)

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Geodesy and Geodynamics 2016年第2期7卷 95-100页

作者： xinlin zhang Shuhei Okubo Yoshiyuki Tanaka Hui Li Institute of Seismology China Earthquake Administration Earthquake Research Institute The University of Tokyo State Key Laboratory of Geodesy and Earth's Dynamics Institute of Geodesy & Geophysics Chinese Academy of Sciences

The greatest earthquake in the modern history of Japan and probably the fourth greatest in the last 100 years in the world occurred on March 11, 2011 off the Pacific coast of *** tsunami and ground motions caused severe damage in wide areas, particularly many towns along the Pacific coast. So far, gravity change caused by such a great earthquake has been reported for the 1964 Alaska and the 2010 Maule events. However, the spatial-temporal resolution of the gravity data for these cases is insufficient to depict a co-seismic gravity field variation in a spatial scale of a plate subduction zone. Here, we report an unequivocal co-seismic gravity change over the Japanese Island, obtained from a hybrid gravity observation（combined absolute and relative gravity measurements）. The time interval of the observation before and after the earthquake is within 1 year at almost all the observed sites, including 13 absolute and 16 relative measurement sites, which deduced tectonic and environmental contributions to the gravity change. The observed gravity agrees well with the result calculated by a dislocation theory based on a self-gravitating and layered spherical earth model. In this computation, a co-seismic slip distribution is determined by an inversion of Global Positioning System（GPS） data. Of particular interest is that the observed gravity change in some area is negative where a remarkable subsidence is observed by GPS, which can not be explained by simple vertical movement of the crust. This indicated that the mass redistribution in the underground affects the gravity change. This result supports the result that Gravity Recovery and Climate Experiment（GRACE） satellites detected a crustal dilatation due to the 2004 Sumatra earthquake by the terrestrial observation with a higher spatial and temporal resolution.

关键词： Tohoku earthquake(Mw 9.0) Co-seismic gravity change Co-seismic displacement change Coseismic geoid change Dislocation theory Global Positioning System Absolute gravity measurement Relative gravity measurement

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Effects of Gaussian filter in processing GRACE data: Gravity rate of change at Lhasa,southern Tibet

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Science China Earth Sciences 2011年第9期54卷 1378-1385页

作者： SUN WenKe HASEGAWA Takashi zhang xinlin FUKUDA Yoichi SHUM C. K. WANG Lei Key Laboratory of Computational Geodynamics Graduate University of Chinese Academy of Sciences Beijing 100049 China Department of Geophysics Kyoto University Japan Earthquake Research Institute The University of Tokyo Japan Division of Geodetic Science School of Earth Sciences The Ohio State University OH 43210-1398 USA

In this paper, the spatial gravity distribution over Tibetan Plateau and the gravity rate of change at Lhasa for different Gaussian filter radii are computed using GRACE data. Results show that the estimate of the gravity rate of change is spatialradius-dependent of the Ganssian filter. The GRACE-estimated gravity rate of change agrees well with the surface measured one. In other words, the GRACE-estimated gravity rate of change has a limited value as that obtained by surface measurement when the spatial filter radius reaches zero. Then numerical simulations are made for different spatial radii of the Gaussian filter to investigate its behaviors when applied to surface signals. Results show that the estimate of a physical signal is filter-radius dependent. If the computing area is equal to or less than the mass area, especially for a uniformly distributed mass, the estimate gives an almost correct result, no matter what filter radius is used. The estimate has large error because of the signal leakage caused by harmonic truncation if the computing area is much bigger than the mass distribution （or inverse for a small mass anomaly）. If a mass anomaly is too small, it is difficult to recover it from space observation unless the filter radius is extremely small. If the computing point （or area） is outside the mass distribution, the estimated result is almost zero, particularly for small filter radii. These properties of the Gaussian filter are helpful in applying GRACE data in different geophysical problems with different spatial position and geometrical size. We further discuss physical sources causing the scalar gravity change at Lhasa. Discussions indicate that the gravity rate of change at Lhasa is not caused by the present-day ice melting （PDIM）（or Little Ice Age, LIA） effect because no ice melting occurs in Lhasa city and nearby. The gravity rate of change is attributable mainly to tectonic deformation associated with the Indian Plate collision. Simultaneous surf

关键词： gravity change GRACE Gaussian filter Tibetan Plateau Lhasa

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Terrestrial water storage variation in Hebei plain area of China,based on ground surface gravimetry

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Geodesy and Geodynamics 2021年第3期12卷 190-196页

作者： Hongtao Hao Hongliang Liu xinlin zhang Jin Wei Bin Zhao Minzhang Hu Key Laboratory of Earthquake Geodesy Institute of SeismologyCEAWuhan430071China Gavitation and Earth Tide National Observation and Research StationWuhan430071China Hubei Earthquake Administration Wuhan430071China Mobile Survey Team of Hebei Earthquake Agency Baoding071000China

Variation of terrestrial water storage in the Hebei plain area from March 2010 to June 2014 was studied using ground gravimetry combined with vertical displacement data from the Global Navigation Satellite *** show that observed gravity variation in this area increased continuously,basically reflecting a trend toward land *** the effect of this subsidence removed,a dominantnegative change in gravity variation was evident,reflecting an average rate of decrease in terrestrial water in this area of 0.10±0.053 m/y,and this is equivalent to a volume of 81.5±43.2×108 m^(3)and is consistent with the spatial distribution of groundwater change from measured hydrologic *** results can be an essential reference and supplement for the study of terrestrial water variation in the Hebei plain area,and indicate that ground surface gravimetry can be used as an important mean for studying changes in terrestrial water.

关键词： Hebei plain area Gravity variation Terrestrial water storage variation Ground surface gravimetry Land subsidence

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Dynamic features and driving mechanism of coal consumption for Guangdong province in China

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Journal of Geographical Sciences 2022年第3期32卷 401-420页

作者： WANG Changjian WANG Fei zhang xinlin WANG Yang SU Yongxian YE Yuyao WU Qitao zhang Hong’ou Guangdong Provincial Key Laboratory of Remote Sensing and Geographical Information System Guangdong Open Laboratory of Geospatial Information Technology and ApplicationGuangzhou Institute of GeographyGuangdong Academy of SciencesGuangzhou 510070China Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou) Guangzhou 510070China School of Resources and Planning Guangzhou Xinhua UniversityGuangzhou 510520China School of Geography Geomatics and PlanningJiangsu Normal UniversityXuzhou 221116JiangsuChina

Guangdong Province,as one of China’s fast-developing regions,an important manufacturing base,and one of the national first round low-carbon pilots,still faces many challenges in controlling its total energy *** dominates Guangdong’s energy consumption and remains the major source of CO_(2).Previous research on factors influencing energy consumption has lacked a systematic analysis both from supply side(factors related to scale,structure,and technologies)and demand side(investment,consumption,and trade).This paper develops the logarithmic mean Divisia index(LMDI)method that focuses on the supply side and the structural decomposition analysis(SDA)method that focuses on the demand side to systematically identify the key factors driving coal consumption in *** are as follows:(1)Supply side analysis indicates that economic growth has always been the most important factor driving coal consumption growth,while energy intensity is the most important constraining *** structure and energy structure have different impacts on coal consumption control during different development phases.(2)Demand side analysis indicates that coal is consumed mainly for international exports,inter-provincial exports,fixed capital formation,and urban household.(3)Industries with the fastest coal consumption growth driven by final demand have experienced significant *** in industrial sectors were mainly driven by inter-provincial exports and urban household consumption in recent years.(4)Research on energy consumption in subnational regions under China’s new development pattern of“dual circulation”should not only focus on exports in the context of economic globalization but also pay more attention to inter-provincial exports on the background of strengthened interregional connections.

关键词： coal consumption Logarithmic mean Divisia index(LMDI) input-output analysis(IOA) structural decomposition analysis(SDA) supply-side and demand-side analysis

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基于工作周期优化的能量采集节点的功率控制

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传感技术学报 2018年第5期31卷 780-785页

作者：张新琳驻马店职业技术学院河南驻马店463000

在无线传感网络WSNs(Wireless Sensor Networks)中,节点受到能量限制,因此,需通过功率管理技术有效地使用电池。而能量采集是补给电池能量的有效方式。为此,针对能量采集节点,提出功率控制算法,记为CLPM-PTPC(Close-Loop Power Manager-... 详细信息

在无线传感网络WSNs(Wireless Sensor Networks)中,节点受到能量限制,因此,需通过功率管理技术有效地使用电池。而能量采集是补给电池能量的有效方式。为此,针对能量采集节点,提出功率控制算法,记为CLPM-PTPC(Close-Loop Power Manager-Predictive Transmission Power Controller)。CLPM-PTPC算法是通过联合工作周期的优化和传输功率控制,实现节点功率的管理。CLPM-PTPC算法先利用闭环功率管理CLPM(Close-Loop Power Manager)调整传输任务的工作时期,再依据功率控制器PTPC(Predictive Transmission Power Controller)调整发射功率,使得传输功率能够实时地依据无线信道环境调整。实验数据表明,与基于固定传输功率算法相比,CLPM-PTPC算法的能量效率提高了约15%。

关键词：无线传感网络能量采集功率管理传输功率控制工作周期

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Expression of inhibin a and βA subunits in cultured human first trimester trophoblast tissue

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Chinese Science Bulletin 1997年第2期42卷 174-175页

作者： YANG xinlin, HAN Chunsheng, zhang Zhiwen and ZHUANG LinzhiState Key Laboratory of Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100080, China State Key Laboratory of Reproductive Biology Institute of Zoology Chinese Academy of Sciences Beijing China

TWO protein hormones, which are dominantly produced by the gonads, are termed inhibin and aetivin since they can inhibit and stimulate the secretion of follicle-stimulating hormone (FSH) by anterior pituitary gland. They are also found in human placenta, and may regulate the placental hormonal secretion. However, control of inhibin subunit expression is not yet reported in human first trimester placenta. Here, using solution hybridization/nuclease protect assay, we determine expression of inhibin a and βA subunits in serum-free cultured trophoblast tissue from human first trimester placenta (6-9 week).

关键词： RNA Expression of inhibin a and A subunits in cultured human first trimester trophoblast tissue

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Site effect on strong-motion records of the 2011 Mw9.0 Tohoku earthquake in Japan

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Geodesy and Geodynamics 2011年第3期2卷 37-41页

作者： LI Heng Wang Ping Feng Qian Li Guanghong zhang xinlin Institute of Seismology China Earthquake Administration Wuhan 430071 China Wuhan Institute of Earthquake Engineering Wuhan 430071 China Earthquake Institute University of Tokyo Tokyo 113 - 0032 Japan

Strong-motion site effect was checked for four sites at comparable epicentral distances from the March 11, 2011 Mw9.0 Tohoku earthquake in Japan. The result showed that site condition had a significant impact on peak acceleration, and on maximal amplitude and characteristic period of its response spectrum. Shorter-period seismic waves were amplified mainly in shallower soils, while longer-period waves in deeper soft rocks and soils, where the characteristic periods of response spectra were longer than those on ground surface.

关键词： site condition characteristic period long period underground structure design response spectrum

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