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“借势”嵌入与“有为”补能:社区环境线索对低龄老年人参与城市基层治理共同体建设的影响路径

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人口与发展 2024年第1期30卷 83-95,142页

作者：何继新夏五洲高雪宁天津城建大学经济与管理学院天津300384

基于线索利用理论建构的社区制度-文化-设施-参与环境线索分析框架,通过Ologit-ISM模型实证分析社区环境线索对低龄老年人参与城市基层治理共同体建设的影响路径,探究各个显著影响因素之间的逻辑层级关系。研究表明,近69%的低龄老年人... 详细信息

基于线索利用理论建构的社区制度-文化-设施-参与环境线索分析框架,通过Ologit-ISM模型实证分析社区环境线索对低龄老年人参与城市基层治理共同体建设的影响路径,探究各个显著影响因素之间的逻辑层级关系。研究表明,近69%的低龄老年人愿意参与到城市基层治理共同体建设,男性低龄老年人的参与意愿明显高于女性低龄老年人;社区制度环境线索、社区文化环境线索、社区设施环境线索、社区参与环境线索是影响低龄老年人参与城市基层治理共同体建设的主要因素,年龄、受教育程度、管理透明度、老年人教育培训是深层因素,并通过健康状况、社区服务平台、社区设施活动布局、居民自主性、参与渠道等第一层中间层因素,引致到参与成效、社区共同体意识、子女数目等第二层中间层因素,形成链式中介作用,进而作用到共同体结构、参与内容、社区文化、激励机制等表层因素,最终影响到低龄老年人参与城市基层治理共同体建设。

关键词：城市基层治理共同体参与意愿 Ologit-ISM模型线索利用理论

Restoration of eroded stratal thickness in key periods of tectonic change in a multi-stage superimposed Tarim Basin in china

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Journal of Palaeogeography 2012年第2期1卷 149-171页

作者： Liu Hao1, Wang Yingmin2.1. school of Marine Sciences, china University of Geosciences (Beijing), Beijing 100083, china 2. school of Geosciences, china University of Petroleum (Beijing), Beijing 102.49, china school of Marine Sciences China University of Geosciences (Beijing) Beijing 100083 China school of Geosciences China University of Petroleum (Beijing) Beijing 102249 China

With an area of 56×104km2. the Tarim Basin is the largest inland basin in china and is also generally acknowledged as one of the most important areas for potential oil and gas exploration. On the basis of data from 2. regional seismic profiles and 40 drilling wells, 15 important first-order and second-order regional unconformities were *** all the main unconformities are superimposed unconfomities. Since the Cambrian, 5 key periods of tectonic change have occurred during the evolution of the Tarim Basin. The total eroded stratal thickness of the above-mentioned unconformities was calculated by using the method of virtual extrapolation of seismic reflection. The results indicate that the total eroded stratal thickness of different periods is quite different in different locations of the basin. Taking the Upper-{2. Ordovician as an example, its thickness restoration of eroded strata was calculated into individual stages i.e. its thickness restoration of eroded strata was calculated to different tectonic periods. Otherwise, as for the specific period of tectonic change, the underlying strata were, respectively eroded and thus the thickness restoration of eroded strata was calculated into individual intervals. Taking the Early Hercynian period as an example, the eroded stratal thickness was calculated into individual intervals to calculate the ratio of intervals of various ages occupying the total eroded thickness. The results show that for the same stratum, its degree of erosion is quite different in different periods and at different locations, due to the varying influence of tectonic movement. The unconformities of some key periods of tectonic change have different controls on the degree of erosion and the eroded range of the individual period of the underlying strata which are the typical characteristics of multi-stage superimposition of unconformities in the Tarim Basin.

关键词： Tarim Basin extrapolation of virtual surface key period of tectonic change superimposed unconformity restoration of eroded stratal thickness

On the siltation of the middle Yangtze River

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Science china Earth Sciences 2004年第5期47卷 463-480页

作者： YIN Hongfu1, CHEN Guojin2. LI Chang抋n1 & WEI Yuan3 1. school of Earth Sciences, china University of Geosciences, Wuhan 430074, china 2. Hydrogeological Team, Hubei Bureau of Geology and Mineral Resources, Jingzhou 434100, china 3. Geological Survey of Jiangxi Province, Nanchang 3302.1, china school of Earth Sciences China University of Geosciences Wuhan 430074 China Hydrogeological Team Hubei Bureau of Geol./Mineral Rsrc. Jingzhou 434100 China Geological Survey of Jiangxi Prov. Nanchang 330201 China

About 5.2.108 t/a of silts from the upper reach of the Yangtze River are transported through Yichang into the middle Yangtze River. The middle Yangtze itself and its tributaries yield ca. 0.8×108 t silts annually. Of this total 6×108 t/a input of silts, ca. 1.2.108 t/a are deposited within the river artery and lakes, while ca 4.83×108 t/a are at {2. transported into the lower reach through Datong, and then either deposited along the river and the Yangtze Delta, or output into the sea. Along the middle Yangtze River silting generally exceeds scouring, but the spatial and temporal distributions of scour-and-fill, as well as its distribution in the river valley transections, are uneven. Along the Yichang-Chenglingji and Jiujiang-Datong Segments of the middle Yangtze, scouring exceeds or equals silting. Silting mainly occurs along the Luoshan-Wuhan-Huangshi Segments with Wuhan as the pivotal point, as well as in the Dongting and Poyang Lakes. Even in these silting-dominated areas, there are times and parts of segments that scouring prevails. As to the transections, generally the river channel of main stream is scouring-dominated, forming V-shaped sections to a depth of 2.30 m or more, whereas the floodplains and bar islands are silting-dominated, forming wide and relatively high flats, which are often artificially transformed into protected embankments. Because the Jingjiang Levee separates the Jianghan Plain from Yangtze to the south, little has been deposited in that plain except a few sediments from the Han River—a tributary of the middle Yangtze. This factor plus the tectonic sag of that plain has made the altitude of plain surface several meters lower than that of the levee in most of the areas. Sil-tation along the Luoshan-Wuhan-Huangshi Segments has resulted in the elevation of flood level in this and upstream segments. River channel scouring plus floodplain silting have caused the transections of the middle Yangtze valley typically with deep channel and height

关键词： the middle Yangtze, scour-and-fill, siltation, silt utilization.

Research on Methods of Ecological Security Assessment of the middle and Lower Reaches of Liaohe River Based on GIS

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Chinese Journal of Population,Resources and Environment 2005年第4期3卷 20-25页

作者： Wang Geng 1,2., Nie Baochi 3, Wang Lin 1 & Wu Wei 1 1. school of Environmental and Biological Science and Technology, Dalian University of Technology, Dalian 11602., china 2. Urban and Environmental school, Liaoning Normal University, Dalian 11602., china 3. Shenyang Buraue of Water Resources, Shenyang 110013, china. school of Environmental and Biological Science and Technology Oalian University of Technology Oalian 116024 China Urban and Environmental school Uaoning Nonnal University Oalian 116029 China Shenyang Buraue of Water Resources Shenyang 110013 China

Ecological security assessment and early warning research possess the attributes of spatiality, non-linearity and randomicity, so we must process much spatial information. Spatial analysis and data management are the advantages of GIS, which can define distribution trend and spatial relations of environmental factors, and show ecological security pattern graphically. Spatial differences of ecological security assessment based on GIS are discussed in this paper, of which the middle and lower reaches of the Liaohe River is taken as a study case. first, to work out pressure-state-response (P-S-R) assessment indicators system, and investigate in person and gather information; second, to digitize the watershed; third, to quantize and calculate by the fuzzy method; last, to construct GIS grid database, and expound spatial differences of ecological security by GIS interpolation and assembly analysis.

关键词： the middle and lower reaches of the Liaohe River ecological security assessment indicators system GIS spatial differences

Study on topographic compensation model of the Okinawa Trough Ⅱ. Geological interpretation of isostatic response function of the Okinawa Trough

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Acta Oceanologica Sinica 1999年第2期18卷 273-278页

作者： Xin Baisen Liu Baohua and Xia Zhifeng 1. Ocean University of Qingdao, Qingdao 2.6003, china 2. first Institute of Oceanography, State Oceanic Administration, Qingdao 2.6003, china (Received October 12. 1997 accepted July 17, 1998) Ocean University of Qingdao Qingdao 266003 China first Institute of Oceanography State Oceanic Administration Qingdao 266003 China

Based on regional compensation model and experimental isostasy, the isostatic response function of the Okinawa Trough is calculated by using gravity and topographic data. The results are shown as follows: the effective elastic thickness of the plate and compensation depth in the southern Okinawa Trough is obviously greater than those in the middle Okinawa Trough. In reference with other geological and geophysical data, the differences between the two portions are explained to be caused mainly by their differences in temperature of the lithosphere and the compensation mechanism.

关键词： Okinawa Trough compensation model isostatic response function topographic load loads from below

Two new species of Vestrogothia (Phosphatocopina, Crustacea) of Orsten-type preservation from the Upper Cambrian in western Hunan, South china

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Science china Earth Sciences 2009年第6期52卷 784-796页

作者： ZHANG HuaQiao1,2.& DONG XiPing1,2.1 school of Earth and Space Sciences,Peking University,Beijing 100871,china 2.State Key Laboratory of Palaeobiology and Stratigraphy,Nanjing Institute of Geology and Palaeontology,Chinese Academy of Sciences,Nanjing 2.0008,china school of Earth and Space Sciences Peking University Beijing China State Key Laboratory of Palaeobiology and Stratigraphy Nanjing Institute of Geology and Palaeontology Chinese Academy of Sciences Nanjing China

Although fossils of Orsten-type preservation represented by Skaracarida and Phosphatocopina were first reported from the middle and Upper Cambrian in western Hunan, South{2. in 2.05, diversified phosphatocopine species have never been appropriately described and elucidated in terms of their evolutionary relationships. Here, we described two new species of Phosphatocopina, Vestrogothia anterispinata sp. nov. and V. bispinata sp. nov. The evolutionary relationship among all the valid species of Phosphatocopina is discussed and the phylogeny of Phosphatocopina is reestablished using cladistic analysis. Accordingly, phosphatocopines primitively evolved along two lineages: one evolved towards the emergence of lobes; the other evolved towards the emergence of dorsal spines. Respectively, lobes originated independently three times, and dorsal spines originated only once. With regard to the dorsal rims, interdorsum originated first, whereas dorsal furrow originated independently twice on the basis of interdorsum. Probably Hesslandona may represent a polyphyletic group, whereas Vestrogothia a monophyletic group.

关键词： fossils of Orsten-type preservation Vestrogothia Phosphatocopina Crustacea evolution phylogeny Cambrian Hunan

ERROR AND ERROR CORRECTION AT ELEMENTARY LEVEL

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Chinese Journal of Applied Linguistics 1994年 18卷 114-121页

作者： Wang Xiaoping Minxian No. 2.middle school, Gansu

Introduction Errors are unavoidable in language learning, however, to a great extent, teachers in most middle schools in{2. regard errors as undesirable, a sign of failure in language learning. Most middle schools are still using the grammar-translation method which aims at encouraging students to read scientific works and enjoy literary works. The other goals of this method are to gain a greater understanding of the first language and to improve the students’ ability to cope with difficult subjects and materials, i.e. to develop the students’ minds. The practical purpose of using this method is to help learners pass the annual entrance examination. "To achieve these goals, the students must first learn grammar and vocabulary,... Grammar is taught deductively by means of long and elaborate explanations... students learn the rules of the language rather than its use." (Tang Lixing, 1983:11-12.

关键词： ERROR AND ERROR CORRECTION AT ELEMENTARY LEVEL over AT

Geochemistry and environment evolution of Core E in the Laizhou Bay since last stage of middle Pleistocene

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Acta Oceanologica Sinica 2001年第3期20卷 391-399页

作者： Han Deliang, Yu Hongjun, Li Guanbao 1. Ocean University of Qingdao, Qingdao 2.6003, china 2. first Institute of Oceanography, State Oceanic Administration, Qingdao 2.6061, china 3. Institute of Oceanology. Chinese Academy of Sciences. Qingdao 2.6 Ocean University of Qingdao Qingdao 266003 China first Institute of Oceanography State Oceanic Administration Qingdao 266061 China Institute of Oceanology Chinese Academy of Sciences Qingdao 266071 China

Geochemistry analysis has been done on Core E (37 07' N, 118 55' E; depth: 82.1 m) taken from the Laizhou Bay in 1994. Nine kinds of invariable elements, 15 kinds of microelements and the content of lime carbonate are measured by means of ICP. The results indicate that most of the invariable elements and microelements in Core E show significant changes in the boundary stratotype, and the ratios between elements (Mn/Fe, Sr/Ba, Ti/Al) in particular. So they can be used as characteristic indicator to stratigraphic division of Quaternary. The changes of invariable elements are primarily controlled by the host minerals, and they mainly indicate the provenance as well as the sedimentation and depositional environment. Several elements, such as Fe, Al, Ca, Mg, Mn and Ti, are very sensitive to the provenance and environment. The distribution of microelements differs in four depositional periods: last stage of middle Pleistocene, last interglacial period, last glacial period and Recent epoch, and especially in the 'cold period' and 'warm period'. The loops in the cycle curves of the most microelements correspond with the sand bed sediments, among which there are six sand units representing 'warm period' sediments, and one representing 'cold period' sediments. The carbonate is on the high side in the aeolian silt sediments formed in the glacial lowering of sea level in Core E, but on the low side in the transgressive sand beds formed in the interglacial period. The content variation of carbonate has a direct bearing on the grain size and the styles of sediments, and is a good indicator to the climate, environment and stratigraphic division.

关键词： Laizhou Bay last stage of middle Pleistocene geochemistry paleo-environment element strata

Mesozoic-Cenozoic tectonic transition in Kuqa Depression-Tianshan,Northwest china:Evidence from sandstone detrital and geochemical records

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Science china Earth Sciences 2005年第9期48卷 1387-1402页

作者： LI Zhong1, GUO Hong2. WANG Daoxuan3 & LIN Wei1 1. Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 10002., china 2. Tarim Oilfield Branch, CNPC, Korla 841000, china 3. Hefei University of Industry, Tunxilu 193, Hefei 2.0009, china Institute of Geology and Geophysics Chinese Academy of Sciences Beijing Chin Tarim Oilfield Branch CNPC Korla China Hefei University of Industry Hefei Chin

Similar to compositional evolution of sandstone modes and detrital heavy minerals from different profiles in the Kuqa Depression, Northwest china, major element analysis of whole sandstones from the same profiles shows four discontinuous depositional interfaces or periods, respectively corresponding to Lower Triassic\middle Triassic, Upper Jurassic\Lower Cretaceous, Lower Cretaceous\Paleogene and Miocene\Pliocene, and indicates five-phase evolution during Mesozoic-Cenozoic: (1) From the {2. to fifth phase, a depositional suite changes from maroon and coarse clastic, through grey-dark grey and fine, red and coarse, red-mottled, interlayered by gypsum, to brown and coarse clastic assemblages, accompanying detrital component evolution in unstable-stable-unstable-very unstable-very unstable assem- blages. It is indicated that carbonate and complex detritus gradually dominate in sandstones in post-Late Jurassic, with rapid reduction of compositional maturity. (2. For major element geo- chemical parameters of whole sandstones, CaO and Fe2.O * 3+MgO contents show a change sequence in high-low-high-higher-highest values, with rapid increasing in post-Late Jurassic. (3) Contra some aggregative indicators for weathering indexes of sandstone detrital component, Al2.3/(CaO+Na2.) and ln(Q/(L+CE)), show a change sequence in low-high-low-lower-lowest ratios, with rapid decreasing in post-Late Jurassic. It is found that sandstone samples of the {2., second and later three phases may be distinguished from the A-CN-K and A-CNK-FM diagrams respectively. Therefore, in the Kuqa Depression-Tianshan, the most important discontinuous depositional interface recording paleotectonic and paleoclimatic transition occurred in Early Triassic\middle Triassic and Late Jurassic\Early Cretaceous, respectively, and, however, tec- tonic differentiations of basin-range system finally result in distinct depositional systems but similar detrital weathering indexes across the Lower Cretaceous\Paleogene

关键词： Tianshan, Kuqa Depression, basin-range, depositional record, tectonic transition, Mesozoic-Cenozoic.