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| 1 | Spatial patterns and driving forces of land use change in China during the early 21st century显示文摘Land use and land cover change as the core of coupled human-environment systems has become a potential field of land change science (LCS) in the study of global environmental change. Based on remotely sensed data of land use change with a spatial resolution of 1 km × 1 km on national scale among every 5 years, this paper designed a new dynamic regionalization according to the comprehensive characteristics of land use change including regional differentiation, physical, economic, and macro-policy factors as well. Spatial pattern of land use change and its driving forces were investigated in China in the early 21st century. To sum up, land use change pattern of this period was characterized by rapid changes in the whole country. Over the agricultural zones, e.g., Huang-Huai-Hai Plain, the southeast coastal areas and Sichuan Basin, a great proportion of fine arable land were engrossed owing to considerable expansion of the built-up and residential areas, resulting in decrease of paddy land area in southern China. The development of oasis agriculture in Northwest China and the reclamation in Northeast China led to a slight increase in arable land area in northern China. Due to the 'Grain for Green' policy, forest area was significantly increased in the middle and western developing regions, where the vegetation coverage was substantially enlarged, likewise. This paper argued the main driving forces as the implementation of the strategy on land use and regional development, such as policies of 'Western Development', 'Revitalization of Northeast', coupled with rapidly economic development during this period. | LIU Jiyuan ZHANG Zengxiang XU Xinliang KUANG Wenhui ZHOU Wancun ZHANG Shuwen LI Rendong YAN Changzhen YU Dongsheng WU Shixin JIANG Nan | 2010 | Journal of Geographical Sciences2010，20，4： | 154 |
| 2 | Spatiotemporal characteristics, patterns, and causes of land-use changes in China since the late 1980s显示文摘Land-use/land-cover 变化(LUCC ) 有连接到人和自然相互作用。瓷器 Land-Use/cover 数据集(CLUD ) 从 1980 年代末在 5 年的间隔定期被更新到 2010,与基于 Landsat TMETM+ 图象的标准过程。陆地使用动态区域化方法被建议分析主要陆地使用变换。在国家规模的陆地使用变化的空间与时间的特征,差别,和原因然后被检验。主要调查结果如下被总结。越过中国的陆地使用变化(LUC ) 在最后 20 年(19902010 ) 里在空间、时间的特征显示了一个重要变化。农田变化的区域在南方减少了并且在北方,而是仍然是的全部的区域增加了几乎未改变。回收农田从东北被转移到西北。布满建筑物陆地很快膨胀了,主要在东方被散布,并且逐渐地展开到中央、西方的中国。树林首先减少了,然后增加但是荒芜的区域是反面。草地继续减少。在中国的 LUC 的不同空间模式被发现在之间迟了第 20 世纪并且早第 21 世纪。原版 13 个 LUC 地区在一些地区被边界的变化由 15 个单位代替。包括的这些变化(1 ) 的主要空间特征加速的扩大布满建筑物在 Huang-Huai-Hai 区域,东南的沿海的区域,长江的中流区域,和四川盆登陆;(2 ) 从东北中国和东方内部蒙古在北方转移了陆地开垦到绿洲在西北中国的农业区域;(3 ) 从在到稻的东北中国的喂雨的农田的连续转变回答;并且(4 ) 为在内部蒙古,黄土高原,和西南的多山的区域的南部的农业牧剧的交错群落的格林工程的谷物的有效性。在最后二十年,尽管在北方的气候变化在农田影响了变化,政策规定和经济驱动力仍然是越过中国的 LUC 的主要原因。在第 21 世纪的第一十年期间,在陆地使用模式驾驶了变化的人为的因素从单程的陆地开发转移了强调到开发和保存。动态区域化方法被用来在单位的 zoning 边界,地区的内部特征,和生长和减少的空间模式分析变化。结果揭示了变化过程的模式,也就是 LUC 的过程和在在不同阶段的特征的地区性的差别。地区的生长和减少在这动态 LUC zoning,在统一边界的变化,和在前者和后者十年之间的变化紧张的特征期间被检验。在为在不同类型和陆地使用的不同区域的变化的陆地使用和原因的模式和过程之间的其他的转变的模式被探索。 | LIU Jiyuan KUANG Wenhui ZHANG Zengxiang XU Xinliang QIN Yuanwei NING Jia ZHOU Wancun ZHANG Shuwen LI Rendong YAN Changzhe WU Shixin SHI Xuezheng JIANG Nan YU Dongsheng PAN Xianzhang CHI Wenfeng | 2014 | Journal of Geographical Sciences2014，24，2： | 245 |
| 3 | Toward New-Generation Intelligent Manufacturing显示文摘 | Zhou Ji Li Peigen Zhou Yanhong Wang Baicun Zang Jiyuan Meng Liu | 2018 | Engineering2018，4，1： | 224 |
| 4 | Mapping wetland changes in China between 1978 and 2008显示文摘Four wetland maps for all China have been produced,based on Landsat and CBERS-02B remote sensing data between 1978 and 2008 (1978,1990,2000 and 2008).These maps were mainly developed by manual interpretation and validated by substantial field investigation in 2009.Based on these maps,we analyzed the 2008 wetland distribution in China and discussed wetland changes and their drivers over the past 30 years.(i) There were about 324097 km 2 of wetlands in 2008,for which inland marshes or swamps were the most common wetland type (35%),with lakes (26%) second.Most of the wetlands were in Heilongjiang,Inner Mongolia,Qinghai and Tibet,occupying about 55% of the national wetland area.(ii) From 1978 to 2008,China's wetland area continually and significantly decreased,by about 33% based on changes in the wetland map.This was in sharp contrast to the increase in artificial wetlands,which increased by about 122%.Inland marshes accounted for the main loss of total wetlands from 1978 to 2000.From 2000 through 2008,riverine and lacustrine wetlands constituted the main wetland loss.Fortunately however,the rate of wetland loss decreased from 5523 to 831 km 2 /a.(iii) The change ratio of lost natural wetlands (including inland and coastal wetlands) to non-wetlands has decreased slightly over the past 30 years.From 1978 to 1990,nearly all natural wetlands (98%) lost were transformed into non-wetlands.However,the ratio declined to 86% from 1990 to 2000,and to 77% from 2000 to 2008.(iv) All Chinese provinces were divided into three groups according to patterns of wetland changes,which could relate to the driving forces of such changes.Tibet was completely different from other provinces,as it was one representative example in which there was a net wetland increase,because of global warming and decreased human activity since 1990.Increased economic development caused considerable wetland loss in most eastern provinces,and artificial wetlands increased. | NIU ZhenGuo ZHANG HaiYing WANG XianWei YAO WenBo ZHOU DeMin ZHAO KuiYi ZHAO Hui LI NaNa HUANG HuaBing LI CongCong YANG Jun LIU CaiXia LIU Shuang WANG Lin LI Zhan YANG ZhenZhong QIAO Fei ZHENG YaoMin CHEN YanLei SHENG YongWei GAO XiaoHong ZHU WeiHong WANG WenQing WANG Hong WENG YongLing ZHUANG DaFang LIU JiYuan LUO ZhiCai CHENG Xiao GUO ZiQi GONG Peng | 2012 | Chinese Science Bulletin2012，57，22： | 51 |
| 5 | Multi-scale observation and cross-scale mechanistic modeling on terrestrial ecosystem carbon cycle显示文摘To predict global climate change and to implement the Kyoto Protocol for stabilizing atmospheric greenhouse gases concentrations require quantifying spatio-temporal variations in the terrestrial carbon sink accurately. During the past decade multi-scale ecological experiment and observation networks have been established using various new technologies (e.g. controlled environmental facilities, eddy covariance techniques and quantitative remote sensing), and have obtained a large amount of data about terrestrial ecosystem carbon cycle. However, uncertainties in the magnitude and spatio-temporal variations of the terrestrial carbon sink and in understanding the underlying mechanisms have not been reduced significantly. One of the major reasons is that the observations and experiments were conducted at individual scales independently, but it is the interactions of factors and processes at different scales that determine the dynamics of the terrestrial carbon sink. Since experiments and observations are always conducted at specific scales, to understand cross-scale interactions requires mechanistic analysis that is best to be achieved by mechanistic modeling. However, mechanistic ecosystem models are mainly based on data from single-scale experiments and observations and hence have no capacity to simulate mechanistic cross-scale interconnection and interactions of ecosystem processes. New-generation mechanistic ecosystem models based on new ecological theoretical framework are needed to quantify the mechanisms from micro-level fast eco-physiological responses to macro-level slow acclimation in the pattern and structure in disturbed ecosystems. Multi-scale data-model fusion is a recently emerging approach to assimilate multi-scale observational data into mechanistic, dynamic modeling, in which the structure and parameters of mechanistic models for simulating cross-scale interactions are optimized using multi-scale observational data. The models are validated and evaluated at different spatial and temporal scales and real-time observational data are assimilated continuously into dynamic modeling for predicting and forecasting ecosystem changes realistically. in summary, a breakthrough in terrestrial carbon sink research requires using approaches of multi-scale observations and cross-scale modeling to understand and quantify interconnections and interactions among ecosystem processes at different scales and their controls over ecosystem carbon cycle. | CAO Mingkui YU Guirui LIU Jiyuan LI Kerang | 2005 | Science China Earth Sciences2005，48，z1： | 17 |
| 6 | Impacts of land-use and climate changes on ecosystem productivity and carbon cycle in the cropping-grazing transitional zone in China显示文摘The impact of land-use/land-cover and climate changes on ecosystem productivity and carbon cycle is one of the most important issues in global change studies. In the past 20 years, the climate and land-use in China have changed significantly and have had important ecological consequences, especially in ecologically sensitive regions, e.g. the cropping-grazing transition zone (CGTZ). Here we present a study that used a process-based ecosystem model and data of land-use changes based on remote sensing and of climate change at high spatial and temporal resolution to estimate the impacts of land-use and climate changes on net primary productivity (NPP), vegetation carbon storage, soil heterotrophic respiration (HR), carbon storage and net ecosystem productivity (NEP) in the CGTZ of China. The results show that the warming and decreases in precipitation in CGTZ reduced NPP by 3.4%, increased HR by 4.3%, and re- duced annual mean total NEP by 33.7Tg from the 1980s to the 1990s. Although carbon storage in vegetation and soil was increasing because the mean NPP for the period was higher than HR, the decreasing NEP indicate that climate change reduced the carbon uptake rate. However, land-use changes in this zone caused increases in NPP by 3.8%, vegetation carbon storage by 2.4%, and annual total NEP by 0.59Tg. The land-use changes enhanced ecosystem carbon up- take, but not enough to offset the negative effect of the climate change. The climate change had greater impacts than the land-use change for the whole CGTZ zone, but had smaller impacts than the land-use change in the regions where it occurred. | GAO Zhiqiang LIU Jiyuan CAO Mingkui LI Kerang TAO Bo | 2005 | Science China Earth Sciences2005，48，9： | 16 |
| 7 | Cropland redistribution to marginal lands undermines environmental sustainability显示文摘Cropland redistribution to marginal land has been reported worldwide;however,the resulting impacts on environmental sustainability have not been investigated sufficiently.Here we investigated the environmental impacts of cropland redistribution in China.As a result of urbanization-induced loss of high-quality croplands in south China(~8.5 t ha^(-1)),croplands expanded to marginal lands in northeast(~4.5 t ha^(-1)) and northwest China(~2.9 t ha^(-1)) during 1990-2015 to pursue food security.However,the reclamation in these low-yield and ecologically vulnerable zones considerably undermined local environmental sustainability,for example increasing wind erosion(+3.47%),irrigation water consumption(+34.42%),fertilizer use(+20.02%) and decreasing natural habitats(-3.11%).Forecasts show that further reclamation in marginal lands per current policies would exacerbate environmental costs by 2050.The future cropland security risk will be remarkably intensified because of the conflict between food production and environmental sustainability.Our research suggests that globally emerging reclamation of marginal lands should be restricted and crop yield boost should be encouraged for both food security and environmental benefits. | Wenhui Kuang Jiyuan Liu Hanqin Tian Hao Shi Jinwei Dong Changqing Song Xiaoyong Li Guoming Du Yali Hou Dengsheng Lu Wenfeng Chi Tao Pan Shuwen Zhang Rafiq Hamdi Zherui Yin Huimin Yan Changzhen Yan Shixin Wu Rendong Li Jiuchun Yang Yinyin Dou Wenbin Wu Liqiao Liang Bao Xiang Shiqi Yang | 2022 | National Science Review2022，9，1： | 13 |
| 8 | Daily variation characteristics of CO2 emission fluxes and contributions of environmental factors in semiarid grassland of Inner Mongolia, China显示文摘Fixed field experimental studies are carried out on daily variations of the undis- turbed community and soil respiration fluxes in different phenological phases of 2001―2002 in semiarid Aneurolepidium chinense steppe of Inner Mongolia, China using static black chamber method. Corresponding statistical analysis of the contributions of the water-heat factors (air temperature, ground temperature, surface soil water content) and ecological factors (above- ground biomass, underground biomass, litter biomass) to daily variation law of the undisturbed community and soil respiration fluxes as well as differences in daily respiration are also con- ducted. The results indicate that undisturbed community and soil respiration have apparent daily variation laws, daily variation patterns of respiration fluxes during different phenological phases are basically the same, and the variations of environmental factors only exert effect on CO2 emission intensities, while the effect on daily variation pattern of grassland CO2 emission fluxes is relatively small. The daily total respiration of the undisturbed community in different phenological phases ranges from 1.34―10.13 g·m?2; soil daily total respiration ranges from 0.98―5.17 g·m?2; both daily variations of undisturbed community and soil respiration fluxes are significantly corre- lated (p < 0.05) or extremely significantly correlated (p < 0.01) with air temperatures and ground surface temperatures, but the correlativity with the soil temperature at 5 and 10 cm depths is relatively weak; multiple regression analysis indicates that about 80% of the difference in daily respiration of the undisturbed community among different phenological phases is induced by the variation of the aboveground biomass, while the variations of the remaining factors can jointly explain around 20% of the daily respiration variations of the whole grassland ecosystem; about 83% of the soil daily respiration variation of the different phenological phases is caused by 0―20 cm underground biomass. Besides, surface soil water content is also an important environmental factor affecting soil daily respiration variations of the Aneurolepidium chinense steppe, but its partial correlation coefficient with soil daily respiration amount does not reach the significance level of 0.05. | QI Yuchun DONG Yunshe LIU Jiyuan GENG Yuanbo LI Mingfeng YANG Xiaohong LIU Lixin | 2005 | Science China Earth Sciences2005，48，7： | 11 |
| 9 | Detrital Zircon U-Pb Geochronology from Greywackes in the Niujuanzi Ophiolitic Mélange, Beishan Area, NW China: Provenance and Tectonic Implications显示文摘The Niujuanzi ophiolitic mélange represents the remnant of oceanic crust between the Dunhuang massif and Mingshui-Hanshan massif. Greywacke from different tectonic slices in the Niujuanzi ophiolitic mélange were analyzed for detrital zircon U-Pb geochronology, trace elements and whole-rock trace elements to infer their provenance and the evolution of the Niujuanzi Ocean. Sample N-76 s containing Carboniferous spores has the youngest zircon age of 323 Ma, while sample N-85 s without fossils has the youngest zircon age of 449 Ma. The two samples were deposited no earlier than 323 and 449 Ma, respectively. The greywackes are depleted in large ion lithophile elements, and are relatively enriched in high field strength elements. The age spectra and trace element concentrations indicate that the sediments may have been deposited near the trench. The Hf, U, and Yb contents of zircons from sample N-76 s vary widely, whereas those from sample N-85 s have a narrow range. Sample N-76 s contains both continental and oceanic zircons, while sample N-85 s contains only continental zircons. The sediments were derived from the continental arc and accretionary wedge. The Paleozoic oceanic crust zircons have ages of 430–500 Ma, indicating the timing of the expansion of the HongliuheNiujuanzi-Xichangjing Ocean expansion. The oldest Paleozoic continental zircon has an age of 470 Ma, suggesting that the northward subduction of the oceanic crust may have started at that time. | Shengdong Wang Kexin Zhang Bowen Song Shucai Li Jianxing Li Jiyuan Yu Jianjun Bu | 2018 | Journal of Earth Science2018，29，1： | 8 |
| 10 | Structural basis of AMPK regulation by adenine nucleotides and glycogen显示文摘激活安培的蛋白质 kinase (AMPK ) 为糖尿病,肥胖,和癌症的治疗是一个中央细胞的精力传感器和精力动态平衡,和一个有希望的药目标的管理者。这里我们人的 α 的现在的低分辨率的水晶结构; 1 β 2 γ 1 holo-AMPK 建筑群跳了到它的 allosteric 调节的人安培和肝糖模仿 cyclodextrin,两个在 phosphorylated (4.05 Å) 并且 non-phosphorylated (4.60 Å) 状态。另外,我们解决了 2.95 Å人的 kinase 领域(KD ) 的结构跳了到邻近的 autoinhibitory 领域(帮助) 并且表现了广泛生物化学并且 mutational 研究。一起,这些研究由安培和肝糖说明 allosteric AMPK 调整的内在的机制,其绑定改变在交替的帮助(安培) 和糖类绑定模块(肝糖) 之间的 equilibria 相互作用。 | Xiaodan Li Lili Wang X Edward Zhou Jiyuan Ke Parker W de Waal Xin Gu M H Eileen Tan Dongye Wang Donghai Wu H Eric Xu Karsten Melcher | 2015 | Cell Research2015，25，1： | 8 |
| 11 | Land-cover changes of national nature reserves in China显示文摘为阻止生态系统降级,保护自然产地并且保存在产地以内的生物多样性, 2588 个自然保护区在 2010 的结束在中国被建立了。全部的区域直到 1.4944 亿哈并且盖住超过 15% 汉语陆上的表面。作为生物多样性变化的主要驱动程序,陆地封面变化直接影响生态系统结构和函数。在这篇论文, 180 个国家自然保护区(NNR ) 被选择,他们的全部的区域是 4471 万哈,为在中国的 29.9% 所有 NNR 的财务。以生态系统特征和他们的主要保护的目标,所有选择 NNR 被分类进 7 种类型。陆地封面(PNCIL ) 的一个积极、否定的变化索引被开发从 1980 年代末分析每种 NNR 类型的陆地封面变化到 2005。结果证明除了森林生态系统储备,所有选择 NNR 类型的陆地封面与逐渐地减轻的降级的减少的率,而是率有 degradated 到某个度。在所有核心地区的陆地封面的吝啬的积极、否定的变化率分别地在 0.69% 和 0.16% 减少了。在核心地区的陆地封面的风景模式在缓冲区地区和试验性的地区是比那更稳定的。而且,在选择 NNR 的陆地封面的生态的差异和补丁连接通常增加了。简言之,在中国的 180 选择 NNR 的陆地封面在建立的 NNR 以后有一个有益的变化趋势,特别在 1995 和 2005 之间。 | FAN Zemeng ZHANG Xuan LI Jing YUE Tianxiang LIU Jiyuan XIANG Bao KUANG Wenhui | 2013 | Journal of Geographical Sciences2013，23，2： | 8 |
| 12 | Guidance Control for Parallel Parking Tasks显示文摘Parking into small berths remains difficult for unskilled drivers. Researchers had proposed different automatic parking systems to solve this problem. The first kind of strategies(called parking trajectory planning) designs a detailed reference trajectory that links the start and ending points of a special parking task and let the vehicle track this reference trajectory so as to park into the berth. The second kind of strategies(called guidance control) just characterizes several regimes of driving actions as well as the important switching points in certain rule style and let the vehicle follows the pre-selected series of actions so as to park into the berth. Parking guidance control is simpler than parking trajectory planning. However, no studies thoroughly validated parking guidance control before. In this paper, a new automatic parking method is presented, which could characterize the desired control actions directly. Then the feasibility is examined carefully. Tests show that a simple parking guidance control strategy can work in most parallel parking tasks, if the available parking berth is not too small. This finding helps to build more concise automatic parking systems that can efficiently guide human drivers. | Jiyuan Tan Chunling Xu Li Li Fei-Yue Wang Dongpu Cao Lingxi Li | 2020 | IEEE/CAA Journal of Automatica Sinica2020，7，1： | 7 |
| 13 | Osteoblast/fibroblast coculture derived bioactive ECM with unique matrisome profile facilitates bone regeneration显示文摘Extracellular matrix(ECM)with mimetic tissue niches was attractive to facilitate tissue regeneration in situ via recruitment of endogenous cells and stimulation of self-healing process.However,how to engineer the complicate tissue specific ECM with unique matrisome in vitro was a challenge of ECM-based biomaterials in tissue engineering and regenerative medicine.Here,we introduced coculture system to engineer bone mimetic ECM niche guided by cell-cell communication.In the cocultures,fibroblasts promoted osteogenic differentiation of osteoblasts via extracellular vesicles.The generated ECM(MN-ECM)displayed a unique appearance of morphology and biological components.The advantages of MN-ECM were demonstrated with promotion of multiple cellular behaviors(proliferation,adhesion and osteogenic mineralization)in vitro and bone regeneration in vivo.Moreover,proteomic analysis was used to clarify the molecular mechanism of MN-ECM,which revealed a specific matrisome signature.The present study provides a novel strategy to generate ECM with tissue mimetic niches via cell-cell communication in a coculture system,which forwards the development of tissue-bioactive ECM engineering along with deepening the understanding of ECM niches regulated by cells for bone tissue engineering. | Mei Li Anqi Zhang Jiajing Li Jing Zhou Yanan Zheng Chi Zhang Dongdong Xia Haijiao Mao Jiyuan Zhao | 2020 | Bioactive Materials2020，5，4： | 7 |
| 14 | New Record of Palaeoscolecids from the Early Cambrian of Yunnan,China显示文摘摘要:新 palaeoscolecid, Guanduscolex 次要的胡,罗 et Fu 情报。et sp。nov,与内向的人和肠的保存软部分来自云南的更低的寒武纪的 Guanshan 动物志,华南。扫描电子显微镜学(SEM ) 揭示的表皮的微结构细节证明每个环忍受三排盘子,每个盘子忍受 910 边缘并且 45 个中央节点。这发现在关系和 palaeoscolecids 和另外的早 priapulids 的进化小径上打开新灯。 | HU Shixue LI Yong LUO Huilin FU Xiaoping YOU Ting PANG Jiyuan LIU Qi Michael STEINER | 2008 | Acta Geologica Sinica(English Edition)2008，82，2： | 6 |
| 15 | IL-17A-dependent gut microbiota is essential for regulating diet-induced disorders in mice显示文摘The gut microbiota plays a key role in obesity and related metabolic disorders, and multiple factors including diet, host genotype, and age regulate it. Many studies have examined the contribution of extrinsic factors to the regulation of the gut microbiota, but the importance of the host genetic constitution cannot be ignored. Interleukin 17A(IL-17A), a pro-inflammatory cytokine, is important in the defense against infection and diseases. Here, we investigated the association among IL-17, a high-fat diet(HFD), and the gut microbiota. Mice deficient in IL-17A were resistant to diet-induced obesity and related diseases. Compared with the Ⅱ-17^(-/-)mice, wild-type(WT) mice challenged with HFD showed obvious weight fluctuations, such as those seen in type 2 diabetes, and hematological changes similar to those associated with metabolic syndrome. However, housing WT mice and Ⅱ-17a^(-/-)mice together significantly alleviated these symptoms in the WT mice. A metagenomic analysis of the mouse feces indicated that the microbial community compositions of these two groups differed before HFD feeding. The HFD mediated shifts in the gut microbial compositions, which were associated with the mouse phenotypes.We also identified potentially beneficial and harmful species present during this period, and drew networks of the most abundant species. A functional analysis indicated pathway changes in the WT and Ⅱ-17a^(-/-)mice when fed the HFD. Collectively, these data underscore the importance of the host factor IL-17 A in shaping and regulating the gut microbiota, which conversely, influences the host health. | Yujing Bi Chunxiao Li Lin Liu Jiyuan Zhou Zhengchao Li Huimin Deng Chunyan Wu Yanping Han Yajun Song Yafang Tan Xiaoyi Wang Zongmin Du Yujun Cui Yanfeng Yan Fachao Zhi Guangwei Liu Nan Qin Heping Zhang Ruifu Yang | 2017 | Science Bulletin2017，62，15： | 5 |
| 16 | A New Arthropod,Guangweicaris Luo,Fu et Hu gen. nov. from the Early Cambrian Guanshan Fauna,Kunming,China显示文摘The Guanshan Fauna is a soft-bodied fauna dominated by arthropods (including trilobites, trilobitoides, Tuzoia, Isoxys, and bradorids) in association with priapulids, brachiopods, anomalocaridids, vetulicoliids, sponges, chancellorids, and echinoderms. This paper reports and describes a new arthropod from the yellowish green mudstone at the lower part of the Wulongqing Formation, Canglangpuan Stage, Lower Cambrian in Kunming, Yunnan, China. The stratigraphic and geographic distribution, classification, fossil preservation, life style of this new arthropod and comparisons with other fossil arthropods are also discussed in details. The discovery and research of the non-mineralized arthropod, Guangweicaris Luo, Fu et Hu gen. nov. from the Guanshan Fauna adds new members to the taxonomic list and provides new information to the evolution of early arthropods. Furthermore, this study would shed new light into the “Cambrian Explosion” and the evolution of early life. | LUO Huilin FU Xiaoping HU Shixue LI Yong HOU Shuguang YOU Ting PANG Jiyuan LIU Qi | 2007 | Acta Geologica Sinica(English Edition)2007，81，1： | 5 |
| 17 | Analysis of forest damage caused by the snow and ice chaos along a transect across southern China in spring 2008显示文摘严重地发生在 2008 的春天的突然的冰和雪暴风雪灾难在南部的中国的令人惊讶地大的部分上破坏了森林。一座横断十字路口 Jinggang Mountain-Jitai Basin-Yushan Mountain-Wuyi 山作为学习区域被选择。综合领域数据在二领域调查收集了在森林上分析骚乱的影响的作者。下列结果被获得。(1 ) 沿着横断的种植园的损坏的程度在斜杠松的顺序减少了 > masson 松 > 混合种植园 > 中国冷杉木。斜杠松是来自被快生长,低木头质量和富有的含油树脂描绘的南部的美洲的介绍的种,并且显示出 61.3% 样品, 70.4% 不能自然地恢复的损坏率。马森松是有更难的木头的森林的本国的先驱种类,并且 52.5% 由于松节油被损坏,它 60.9% 不能恢复自然地。中国冷杉木是本地树种,样品显示出 46% 的率和 32.5% 的相对的率,比混合种植园低。( 2 )从西方到沿着横断的东方,我们能看见那常绿树 Jinggang 山上的西方的横断的阔叶的森林显示出最轻的损坏程度,并且当中国冷杉木在 900 m 上面在 700 m 和相对严重的损坏下面显示出轻损坏时,在 700 m 的高度的杉种植园严重地被破坏。在在 Jitai 盆的中央横断的马森松和斜杠松由于松节油活动严重地被损坏,并且关门自然第二等的脱落阔叶的森林在缠绕的灌木上由于高冰和雪累积严重地被损坏。在沿着在 Xingguo 和 Ningdu 县的东方横断的 400 m 下面的空中播种的种植园是的马森松将近,为小树尺寸的 undamaged,和在 500900 m 高度的中国冷杉木显示出更轻的损坏程度。然而,是的 masson 松上面散布了 400 m 并且在 1960 年代种了,严重地由于松节油被损坏。 | SHAO Quanqin HUANG Lin LIU Jiyuan KUANG Wenhui LI Jia | 2011 | Journal of Geographical Sciences2011，21，2： | 4 |
| 18 | A quantitative assessment of the distribution and extent of urban clusters in China显示文摘城市的簇在一个国家是工业和都市化的高水平的期望的产品,以及是在全球竞争的参予的基本单位。关于中国,城市的簇为增加中国都市化过程被认为是主导的形成。然而,迄今为止没有技术的重合、有效、可信的方法学的系统和集合识别中国城市的簇。这研究调查地理信息技术支持提供中国城市的簇的分发的更好的理解的一个计算机化的鉴定方法的潜力。鉴定方法在 ArcInfo 宏语言编程的帮助下基于一个地理信息数据库,一个数字举起模型,和社会经济的数据被执行。在方法,初步的边界根据交通可接近性被识别,并且最后的鉴定从在 rasterized 的帮助下在一个区域限制城市数字,人口,和 GDP 被完成社会经济的数据集。结果证明方法识别九中国城市的簇,即,珀尔河三角洲,更低的长江山谷, Beijing-Tianjin-Hebei 区域,东北中国平原,中间的长江山谷,华中平原,西方的台湾海峡, Guanzhong 和 Chengdu 重庆城市的簇。这研究代表包含中国城市的簇的计算机化的鉴定的第一研究。而且与另外的相关研究相比,研究途径,联合交通可接近性和社会经济的特征,被显示是识别城市的簇的一个不同、有效、可靠的方法。 | ZHANG Qian HU Yunfeng LIU Jiyuan LIU Yue REN Wangbing LI Jun | 2012 | Journal of Geographical Sciences2012，22，1： | 4 |
| 19 | Mapping paddy rice agriculture in southern China using multi-temporal MODIS images显示文摘 | Xiangming Xiao Stephen Boles Jiyuan Liu Dafang Zhuang Steve Frolking Changsheng Li William Salas Berrien Moore | 2005 | Remote Sensing of Environment2005，，4： | 3 |
| 20 | Comparison of Travel Mode Choice Between Taxi and Subway Regarding Traveling Convenience显示文摘In this study, we investigate travel mode choice behavior between taxi and subway with an emphasis on the influence of traveling convenience. In the first stage, we examine the Origin-Destination(OD) points of Beijing taxi trips and compare these locations with the respective nearest subway station. Statistics reveal several interesting conclusions. First, for approximately 24.89% of all trips, no convenient subway connections exist between the OD pairs. As such, a taxi becomes the only viable choice. Second, for 80.23% of the remaining 75.11%of trips(equivalent to 60.26% of all trips), access distance from either the origin or the destination to the nearest subway station is greater than 500 meters. This phenomenon indicates that walking distance plays an important role in travel mode choice. In the second stage, we examine groups of taxi trips with similar travel distances and travel times to reveal common features. We establish a preference rule in terms of travel distance and travel time.This determines whether an individual driver will take a taxi or the subway, using a pairwise comparison-based preference regression model. Tests indicate that more than 95% of taxi trips can be correctly predicted by this preference rule. This conclusion reveals that traveling convenience dominates the travel model choice between taxi and subway. All these findings shed light on the factors that influence travel mode choice behavior. | Li Li Shuofeng Wang Meng Li Jiyuan Tan | 2018 | Tsinghua Science and Technology2018，23，2： | 2 |
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