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| 1 | Spatiotemporal variation in alpine grassland phenology in the Qinghai-Tibetan Plateau from 1999 to 2009显示文摘Plant phenology is the most salient and sensitive indicator of terrestrial ecosystem response to climate change.Studying its change is significantly important in understanding and predicting impressively changes in terrestrial ecosystem.Based on NDVI from SPOT VGT,this paper analyzed the spatiotemporal changes in alpine grassland phenology in Qinghai-Tibetan Plateau from 1999 to 2009.The results are enumerated as follows:(1) The spatial distribution of the average alpine grassland phenology from 1999 to 2009 is closely related to water and heat conditions.Accompanying the deterioration in heat and water conditions from southeast to northwest,the start of growth season(SOG) was delayed gradually,the end of growth season(EOG) advanced slowly,and the length of growth season(LOG) shortened gradually.Elevation played an important role in the regional differentiation of phenology,but a dividing line of approximately 3500 m existed.Below this line,the phenology fluctuated irregularly with altitude change,whereas above the line,the phenology is closely related to altitude change.(2) From 1999 to 2009,SOG of the alpine grassland came earlier by six days per decade(R2=0.281,P=0.093),EOG was late by two days per decade(R2=0.031,P=0.605),and LOG lengthened by eight days per decade(R2=0.479,P=0.018).The early SOG,the late EOG,and the extended LOG mainly occurred at the center and east of the Plateau.SOG in most of the Plateau advanced significantly,especially in the eastern Plateau.(3) The inter-annual phenology changes of the alpine grassland in the Qinghai-Tibetan Plateau exhibited significant differentiation at different elevation and natural zones.The inter-annual changes at high altitude were more complicated than that at low altitude.The most significant phenology changes were found in the eastern Qinghai-Qilian montane steppe zone,and non-significant changes occurred in the Southern Tibet montane shrub-steppe zone. | DING MingJun ZHANG YiLi SUN XiaoMin LIU LinShan WANG ZhaoFeng BAI WanQi | 2013 | Chinese Science Bulletin2013,58,3: | 44 |
| 2 | The vegetation and climate change during Neocene and Early Quaternary in Jiuxi Basin, China显示文摘Sporopollen record in the Laojunmiao Section at Yumen in the Hexi Corridor foreland depression at the northern margin of the Tibetan Plateau revealed that during the period of 13.0―11.15 Ma the ecological environment of the Jiuxi Basin is characterized by steppe vegetation and a semi-moist climate. During 11.16―8.60 Ma prevailed forests of cypress and a still warmer, moister climate; steppe vegetation and dry climate began probably at about 8.6 Ma. Although aridification had been relaxed time and again during 8.40―6.93 Ma (forest-steppe, warm-semi-moist), 6.64―5.67 Ma (open-forest and steppe, warmer-semi-moist) and 5.42―4.96 Ma (steppe, semi-arid), the climate in the region became drier and drier in response to the fre- quent occurrence of aridity during 6.93―6.64 Ma (steppe, semi-arid), 5.67―5.42 Ma (de- sert-steppe, arid), 3.66―3.30 Ma (desert-steppe, arid) and 2.56―2.21 Ma (desert, arid). Perhaps the important findings of our study are the notable expansion of drought-enduring plants during 3.66―3.30 Ma and about 2.56 Ma and the replacement of vegetation by vast arid desert. | MA Yuzhen 1 , FANG Xiaomin 1,2 , LI Jijun 1 , WU Fuli 1 & ZHANG Jun 1 1. Key Laboratory of Western China’s Environmental Systems and College of Resources and Environment, Lanzhou University, Lanzhou 730000, China 2. State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710075, China | 2005 | Science China Earth Sciences2005,48,5: | 31 |
| 3 | 烧伤病房细菌耐药性的分析显示文摘目的 分析笔者单位烧伤病房近 4年来的细菌耐药性。 方法 从本院 1996年~ 1999年烧伤患者血培养阳性及创面分离出的细菌 ,其中 5 0株以上者 5种 ,用纸片琼脂扩散法进行药敏试验。并以美国国家临床实验室标准委员会 (NCCLS)公布的数值作为判断耐药标准。应用双纸片协同试验检测 45株肺炎克雷伯菌的超广谱 -内酰胺酶 (ESBLs)。 结果 仅万古霉素对金黄色葡萄球菌有效。亚胺培南对大肠埃希菌、阴沟肠杆菌、肺炎克雷伯菌有效 ,而仅多粘菌素 -B对铜绿假单胞杆菌有效。 45株肺炎克雷伯菌中ESBLs阳性者有 38株 ,ESBLs的发生率为 84.4%。 结论笔者医院烧伤病房的细菌耐药率甚高 ,这可能是由于 β -内酰胺酶的产生 ,特别是ESBLs发生率甚高所致 ,亚胺培南依然对ES BLs稳定 ,抗菌效能佳 ;但复合 β-内酰胺酶抑制剂的抗生素作用已日趋减弱。铜绿假单胞菌对亚胺培南的耐药率正逐年增高 ,可能是由于大量使用该药 ,引起菌株产生一种新的由质粒传递的金属 β -内酰胺酶 ,细菌外膜蛋白产生减少与通透性的改变 。 | 许小敏 张民权 廖萍华 Xu Xiaomin Zhang Minquan LIAO Pinghua | 2001 | 中华烧伤杂志2001,17,2: | 26 |
| 4 | Dust storms and loess accumulation on the Tibetan Plateau: A case study of dust event on 4 March 2003 in Lhasa显示文摘Whether the Tibetan Plateau is a significant dust source area is of great importance, because this is re-lated to the understanding of sources, accumulation and environmental effects of dusts on the Tibetan Plateau and in the Far East-Pacific Ocean regions as well as to the evolution of coupling of the Tibetan Plateau and atmosphere-ocean- continent exchange. Synoptic dynamics and remote sensing tracing of a dust storm on 3 to 5 March, 2003 in Lhasa on South Tibet demonstrate that the Tibetan Plateau possesses all factors and conditions of generating dust storms. Accom-panied with this dust storm is a strong ascending stream on the Plateau which has raised various sizes of dust particles into different levels. The lifted coarse particles were largely fallen down and accumulated as loess on the eastern Tibetan Plateau, and the fine particles were translated by the west-erly jet and subsided in the northern Pacific Ocean. The spa-tial-temporal distribution of dust-storms between years 1961 and 2000 on the Plateau shows that dust-storms mainly occur in winter and early spring with high frequency, and the path of dust storm moves gradually from south to north, which is closely coupled with the northward moving of the westerly jet from winter to spring over the Tibetan Plateau. Com-pared with other twelve dust source areas in China, the Ti-betan Plateau is one of the key dust source areas for the long-distance transport because its high occurring frequency and elevation cause fine particles easily to be lifted into the zone of the westerly jet. | FANG Xiaomin HAN Yongxiang MA Jinghui SONG Lianchun YANG Shengli ZHANG Xiaoye | 2004 | Chinese Science Bulletin2004,49,9: | 25 |
| 5 | Start of vegetation growing season on the Tibetan Plateau inferred from multiple methods based on GIMMS and SPOT NDVI data显示文摘在这研究,我们使用了四个方法从 1982~2012 在西藏的高原( TP )上调查成长季节( SGS )的开始,用从全球库存为研究建模并且印射获得的规范的差别植被索引( NDVI )数据( GIMSS , 19822006 )并且点植被( SPOT-VGT , 19992012 )。用四个方法估计的 SGS 价值沿着纬度或高度的坡度显示出类似的空间模式,但是与在 SGS 日期的重要变化。最大的差异主要在这些区域被发现与最高或最低植被范围。在 1982 和 1998 之间,然而,从四个方法导出的 SGS 值都根据更最近的点 VGT 数据(19992012 ) 显示一个进展趋势,没有 TP 上的 SGS 的连续地进展的趋势。在价值从在 1999 和 2006 之间的 GIMMS 和点导出的 SGS 之间的关联的分析数据来源与问候在趋势表明一致性到并且到使用的四个分析方法。与另外的方法相比,最大的一致性在之间在里面 situ 数据和检索的 SGS 值与方法 3 被获得(NDVI 比率的阀值) 。避免错误在有多样的植被类型和物理环境的一个广阔区域,知道不同植被类型的季节的变化特征是批评的,特别地在有稀少的草地的区域或常绿树森林。 | DING Mingjun LI Lanhui ZHANG Yili SUN Xiaomin LIU Linshan GAO Jungang WANG Zhaofeng LI Yingnian | 2015 | Journal of Geographical Sciences2015,25,2: | 17 |
| 6 | Experimental Study on Emission Performance of an LPP/TVC显示文摘A key issue in the commercial aircraft engine design is environmental acceptability, and designers are continually challenged to reduce emissions. In this paper, an experimental investigation is performed to evaluate the emission performance of a liquid-fueled trapped vortex combustor (TVC) under lean premixed prevaporized (LPP) mode. When operating as an LPP system, a TVC is fueled both in the cavities and in the main stream. The correlations between the emission performance and the total excess air ratio, the positions (4 positions) of the fuel injectors in the main stream, and the inlet temperature are obtained. Experi- mental results show that both the volume concentrations of unburnt hydrocarbon (UHC) and NOx (NO, NO2 usually grouped together as NOx) increase with the increase of total excess air ratio from 1.5 to 3.0; the emission performance relies heavily on the position of the main stream injector, and the best performance is achieved at Position 4 in the experiments; the increase of the inlet temperature impacts on the emission performance positively; the smallest volume concentrations of UHC and NOx obtained in the experiment are 94×10 6 and 2.3×10 6 respectively. This paper validates the feasibility of low emissions for an LPP/TVC and provides a reference for further optimization of TVCs. | JIN Yi HE Xiaomin ZHANG Jingyu JIANG Bo WU Zejun | 2012 | Chinese Journal of Aeronautics2012,25,3: | 17 |
| 7 | Spatial concentration,congener profiles and inhalation risk assessment of PCDD/Fs and PCBs in the atmosphere of Tianjin,China显示文摘Polychlorinated dibenzo-p-dioxins/dibenzofurans(PCDD/Fs) and polychlorinated biphenyls(PCBs) were monitored in a seasonal passive sampling scheme during June 2008 and January 2009 to investigate the spatial concentration,congener profiles and evaluate the potential inhalation risk in different functional areas in Tianjin,China.The spatial air concentrations and I-TEQs ranged 1.08×102-8.19×10 3 fg m-3(average 2.63×103 fg m-3) and 4.08-325 fg I-TEQ m-3(average 91.4 fg I-TEQ m-3) respectively for PCDD/Fs.The concentration and I-TEQs of PCBs were 3.08×104-3.01×105 fg m-3(average 1.39×105 fg m-3) and 1.72-49.6 fg I-TEQ m-3(average 18.5 fg I-TEQ m-3).It is obvious that PCB concentrations were several hundred times higher than the PCDD/Fs.However,the ambient air PCDD/Fs contributed a major part to the total toxicity equivalents,varying from 72.7% to 89.0%(average 81.8%).The atmospheric PCDD/F levels were observed to be higher in winter for most of sampling sites in the downtown.Besides,inhalation risk assessment showed that local residents might suffer more risk near the point sources than those in living area,industrial zones and background area in Tianjin City.However,the total daily dioxin intake was approximately several to hundreds of times lower than the WHO criteria,showing relatively low exposure risks from the impact of industry point sources in Tianjin City. | DING Lei LI YingMing WANG Pu LI XiaoMin ZHAO ZongShan RUAN Ting ZHANG QingHua | 2013 | Chinese Science Bulletin2013,58,9: | 17 |
| 8 | Advances in carbon flux observation and research in Asia显示文摘As an important component of FLUXNET, Asia is increasingly becoming the hotspot in global carbon research for its vast territory, complex climate type and vegetation diversity. The present three regional flux observation networks in Asia (i.e. AsiaFlux, KoFlux and ChinaFLUX)have 54 flux observation sites altogether, covering tropic rainforest, evergreen broad-leaved forest, broad-leaved and coniferous mixed forest, shrubland, grassland, alpine meadow and cropland ecosystems with a latitudinal distribution from 2°N to 63°N. Long-term and continuous fluxes of carbon dioxide, water vapor and energy between the biosphere and atmosphere are mainly measured with eddy covariance technique to (1) quantify and compare the carbon, water and energy budgets across diverse ecosystems; (2) quantify the environmental and biotic controlling mechanism on ecosystem carbon, water and energy fluxes; (3) validate the soil-vegetation-atmosphere model; and (4) serve the integrated study of terrestrial ecosystem carbon and water cycle. Over the last decades, great advancements have been made in the theory and technology of flux measurement, ecosystem flux patterns, simulation and scale conversion by Asian flux community. The establishment of ChinaFLUX has greatly filled the gap of flux observation and research in Eurasia. To further promote the flux measurement and research,accelerate data sharing and improve the data quality, it is necessary to present a methodological system of flux estimation and evaluation over complex terrain and to develop the integrated research that combines the flux measurement, stable isotope measurement, remote sensing observation and GIS technique. It also requires the establishment of the Joint Committee of Asian Flux Network in the Asia-Pacific region in order to promote the cooperation and communication of ideas and data by supporting project scientists, workshops and visiting scientists. | YU Guirui, ZHANG Leiming, SUN Xiaomin, FU Yuling & LI Zhengquan Synthesis Center of Chinese Ecosystem Research Network (CERN), Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China Graduate School of the Chinese Academy of Sciences, Beijing 100039, China | 2005 | Science China Earth Sciences2005,48,z1: | 16 |
| 9 | An operational two-layer remote sensing model to estimate surface flux in regional scale: Physical background显示文摘Based on the improved interaction mechanism of two-layer model, this paper proposed Pixel Component Arranging and Comparing Algorithm (PCACA) and theoretically positioning algorithm, estimated the true temperature of mixed pixel in four extreme points in combination with the measurements of dry and wet points in calibration fields and improved the reliability of positioning dry and wet line. A new two-layer energy-separation algorithm was proposed,which was simple and direct without resistance network parameters for each pixel. We also proposed a new thought about the effect of advection. The albedo of mixed pixel was also separated with PCACA. In combination with two-layer energy-separation algorithm, the net radiation of mixed pixel was separated to overcome the uncertainty of conventional energy-separation algorithm using Beer's Law. Through the validation of retrieval result, this method is proved to be feasible and operational. At the same time, the uncertainty of this algorithm was objectively analyzed. | ZHANG Renhua SUN Xiaomin WANG Weimin XU Jinping ZHU Zhilin TIAN Jing | 2005 | Science China Earth Sciences2005,48,z1: | 16 |
| 10 | Cenozoic Stratigraphy Deformation History in the Central and Eastern of Qaidam Basin by the Balance Section Restoration and its Implication显示文摘Qaidam 盆,在 Qinghai 西藏高原的北边缘定位了,是大中生代新生代盆,和熊巨大的厚新生代阶层。自从 ∼55 妈,印第安人欧亚的板板碰撞的地质的事件是记录的井。在高分辨率的地层学基于最近的进步,平衡的节的一种技术被用于六东北西南地质的地震侧面在 Qaidam 盆中央、东方重建外壳的弄短变丑历史在新生代碰撞期间。结果证明 Qaidam 盆开始弄短对早碰撞将近同步的变丑,作为弱压缩表明,变丑在中间期间并且晚显著地增加了始新世,然后稍微变弱并且开始后来很快加速了晚中新世,特别第四级,反映这强大的有压缩性的变丑并且快速在 Qaidam 盆附近北西藏的高原高举。 | LIU Dongliang FANG Xiaomin GAO Junping WANG Yadong ZHANG Weilin MIAO Yunfa LIU Yongqian ZHANG Yuezhong | 2009 | Acta Geologica Sinica(English Edition)2009,83,2: | 16 |
| 11 | Seasonal trend of ambient PCDD/Fs in Tianjin City, northern China using active sampling strategy显示文摘The spatial concentrations, seasonal trends, profiles and congener pairs of ambient polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) were investigated within a seasonally active sampling scheme during Jun 2008 and Jan 2009 in Tianjin City, northern China. The PCDD/F concentrations ranged 14.2-172 fg I-TEQ/m3 (average 69.3 fg I-TEQ/m3 ) in summer and (89.8-1.01)×103 fg I-TEQ/m3 (average 509 fg I-TEQ/m3 ) in winter, respectively, except for the E-waste dismantling site where much higher values were observed (1.04×103 fg I-TEQ/m3 in summer and 7.123×103 fg I-TEQ/m3 in winter). The results indicated a significantly seasonal trend with higher TEQ values in winter as compared with summer, which could be related to increased emission sources and seasonal variations of the atmospheric boundary layer height. 2,3,4,7,8-PeCDF was the dominant contributor to the total PCDD/F toxic equivalents, and 2,3,7,8-TCDD was detected at almost all the sampling sites in winter. Most of the similarly substituted PCDD/F congener pairs exhibited high correlations, suggesting that they might have similar environmental fate or sources. But different seasonal and spatial distributions of PCDD/F concentrations indicated that the emission sources might be intermittent. | Lei Ding Yingming Li Pu Wang Xiaomin Li Zongshan Zhao Qinghua Zhang Ting Tuan Guibin Jiang | 2012 | Journal of Environmental Sciences2012,24,11: | 16 |
| 12 | Variation and mechanisms of clastic reservoir quality in the Paleogene Shahejie Formation of the Dongying Sag, Bohai Bay Basin, China显示文摘Reservoir quality varies greatly in the Shahejie Formation in the Dongying Sag. It is essential to analyze the variation and mechanisms of reservoir quality for determining the controlling factors based on cores, porosity measurements and fluid inclusion techniques and so on. The sandstones in the fluvial,(fan) delta-front have the best reservoir quality due to the depositional conditions mechanically controlling the petrology configuration and the primary porosity, and chemically influencing the diagenesis and development of secondary pores. The activity of the boundary faults and the sedimentary facies dominate the variation of reservoir quality in different areas and intervals. The reservoir quality varies with the position of sandstone beds in different vertical models of sandstone and mudstone. This mainly arose from the strong cementation or strong dissolution in the sandstone caused by the diagenesis evolution of adjacent mudstone. With higher oil saturation reservoir quality is better because the hydrocarbon charge favors dissolution and restricts cementation. Diagenesis, depositional conditions and tectonic setting are the key controls of reservoir quality in the Shahejie Formation of the Dongying Sag. | Zhang Qin Zhu Xiaomin Ronald J Steel Zhong Dakang | 2014 | Petroleum Science2014,11,2: | 16 |
| 13 | Risk factors and long-term health consequences of macrosomia:a prospective study in Jiangsu Province,China显示文摘We sought to determine risk factors associated with fetal macrosomia and to explore the long-term consequence of infant macrosomia at the age of 7 years.A prospective population based cohort study was designed to examine the associations between maternal and perinatal characteristics and the risk of macrosomia.A nested case-control study was conducted to explore the long-term health consequence of infant macrosomia.The mean maternal age of the macrosomia group was 24.74±3.32 years,which is slightly older than that in the control group(24.35±3.14 years,P = 0.000).The mean maternal body mass index(BMI) at early pregnancy was 22.75±2.81 kg/m 2,which was also higher than that in the control group(21.76±2.59 kg/m 2,P = 0.000).About 64.6% of macrosomic neonates were males,compared with 51.0% in the control group(P = 0.000).Compared with women with normal weight(BMI:18.5-23.9 kg/m 2),women who were overweight(BMI:24-27.9 kg/m 2) or obese(BMI ≥ 28 kg/m 2),respectively,had a 1.69-fold(P = 0.000) and a 1.49-fold(P = 0.000) increased risks of having a neonate with macrosomia,while light weight(BMI<18.5 kg/m 2) women had an approximately 50% reduction of the risk.Furthermore,macrosomia infant had a 1.52-fold and 1.50-fold risk,respectively,of developing overweight or obesity at the age of 7 years(P = 0.001 and P = 0.000).Older maternal age,higher maternal BMI at early pregnancy and male gender were independent risk factors of macrosomia.Macrosomic infant was associated with an increased predisposition to develop overweight or obesity at the beginning of their childhood. | Shouyong Gu Xiaofei An Liang Fang Xiaomin Zhang Chunyan Zhang Jingling Wang Qilan Liu Yanfang Zhang Yongyue Wei Zhibin Hu Feng Chen Hongbing Shen | 2012 | The Journal of Biomedical Research2012,26,4: | 14 |
| 14 | Zircon U-Pb Ages of the Granodioritic Porphyry in the Laba Molybdenum Deposit,Yunnan,SW China and Its Geological Implication显示文摘Geza 岛弧是一个著名矿化作用集中区域,在西藏的高原的东方边缘的 Sanjiang 领域的部分。在最近的年里,几迟了的 Yanshanian 花岗石的侵入和联系存款在这个区域被发现了,在桃花源,区域是其一最大 Laba 铝存款。以前的研究建议预定 Laba 矿化作用是 85 ±2 妈。然而, granodioritic 斑岩的年龄仍然保持未知。在这研究,从忍受辉钼矿的 granodioritic 斑岩的三件样品锆石标明日期的 LA-ICP-MS U-Pb 与 85.00 ± 的产生日期一起被进行了0.23 妈(MSWD = 0.58 ) , 85.28 ±0.28 妈(MSWD = 1.12 ) ,并且 84.83 ±0.26 妈(MSWD = 0.79 ) 分别地,显示这些 granodioritic 斑岩在 ∼85 附近在迟了的 Yanshanian 形成了妈。与矿化作用的地质的特征结合了,时间地, Laba 存款遗传上空间地与 granodioritic 斑岩被联系。另外, Laba 存款的年龄与另外的迟了的 Yanshanian 侵入和矿化作用一致,建议矿化作用可能在在迟了的白垩纪期间的 intra 板 extensional 环境下面被产生。 | YU Haijun LI Wenchang YIN Guanghou LU Yingxiang CAO Xiaomin HUANG Dingzhu DONG Tao ZHANG Youming | 2014 | Acta Geologica Sinica(English Edition)2014,88,4: | 14 |
| 15 | Generation of thermosensitive male-sterile maize by targeted knockout of the ZmTMS5 gene显示文摘Maize(Zea mays L.)is one of the most important cereal crops,with a global production of 1.02 billion tons in 2013(Baldaufa et al.,2016).Heterosis is widely used to increase the productivity of maize,and the first commercial hybrid maize was introduced in the 1930s(Duvick,2001).The high-yield maize varieties used today are all hybrids,and the production of hybrid maize seed requires sterilization to prevent self-pollination.Conventional seed produc- | Jun Li Huawei Zhang Xiaomin Si Youhui Tian Kunling Chen Jinxing Liu Huabang Chen Caixia Gao | 2017 | Journal of Genetics and Genomics2017,44,9: | 14 |
| 16 | A review on China's constructed wetlands in recent three decades:Application and practice显示文摘Constructed wetlands(CWs)have been introduced to and developed in China for environmental engineering over the most prosperous three decades(1990–2020).To study the origin,development process,and future trend of CWs,this review summarized a wide range of literatures between 1990 and 2020 by Chinese authors.Firstly,the publication number over years,research highlights,and the author contributions with the most published papers in this field were conducted through bibliometric analysis.Secondly,the most principal components of CWs,substrates and macrophytes were summarized and analyzed.Thirdly,the typical application cases from traditional CWs,pond systems to combined pond-wetland systems were presented.In China,CWs were predominately distributed in the east of the so-called'Hu Huanyong Line'.Therefore CWs were limited by the socio-economic level and climatic conditions.It is unquestionable that the overall level of China's CWs has improved significantly,and one of the most prominent features has started towards the plural pattern development.There has been a trend of large-scale or low-cost CW application in the recent years.However,lifecycle research and management are required for better strategies in the future. | Hong Zhang Wenzhong Tang Weidong Wang Wei Yin Honglei Liu Xiaomin Ma Yiqi Zhou Pei Lei Dongyang Wei Litian Zhang Cao Liu Jinmiao Zha | 2021 | Journal of Environmental Sciences2021,33,6: | 13 |
| 17 | Magnetostratigraphy of the Zanda basin in southwest Tibet Plateau and its tectonic implications显示文摘The Zanda basin is one of the very important basins at the north slope of the Himalaya Range. Thus the study of the basin strata will provide critical information about the tectonic evolution of the Himalayan Orogenic Belt. 268 oriented block samples were collected in the 750-m-thick sections of the Zanda ba- sin. The characteristic remanent magnetization (ChRM) was isolated that decays linearly to the origin between 500oC and 690oC for most studied samples. An age range of 9.5―2.6 Ma was estimated from the correlation between our observed polarity column and the Geomagnetic Polarity Time Scale (GPTS). The age of the Zanda basin does not support the models that the South Tibetan Detach system (STDS) is one of the basin controlling faults. Given the sedimentological features in the basin and the tectonic features at the north edge of the basin, the Zanda basin was a half graben that was possibly controlled by the Karakorum fault on the northeast. | WANG ShiFeng ZHANG WeiLin FANG XiaoMin DAI Shuang Oliver KEMPF | 2008 | Chinese Science Bulletin2008,53,9: | 12 |
| 18 | Genetic Mechanism of Dolomitization in Fengcheng Formation in the Wu-Xia area of Junggar Basin,China显示文摘The dolomitic rocks of the Fengcheng Formation are considered to be formed under special geologic conditions,and are significant hydrocarbon reservoir rocks in the Wu-Xia area in the Junggar Basin.Analyses of petrologic characteristics and stable isotope composition indicate that the dolomitizing host rock is volcanic and the dolomitizing fluids probably consists of brine from shore-shallow lakes with great evaporation and salinity in the Fengcheng Formation,which have formed under arid climatic conditions,as well as residual Mg-rich seawater from the underlying Jiamuhe Formation and Carboniferous.Dust tuff in the area has significant plagioclase content.Anorthite and labradorite hydrolysis by CO2 can be coupled with calcite precipitation.Late Mg-rich brine percolated and replaced calcite formed in the early time,which lead to precipitate dolostones with different occurrences,such as graniphyric,random bedded or lumpy.The diagenetic dolostones with different occurrences resulting from particular formation conditions occurred in different tectonic settings.The dolomitizing fluid has been driven by the thermal convection flow generated by volcanic eruptions.At the same time,the overthrusts of the Wu-Xia growth fault have speeded up the flow of deep Mg-rich water upwards,and induced the water to quickly penetrate and horizontally migrate in the strata.Fracture is the major and the most important reservoir space in dolomitic reservoir of the Fengcheng Formation.Fracture and fault plays a decisive role in controlling the formation of dolostone and the distribution of favorable reservoirs.The deliverability of oil and gas is determined by the development and match relations of dissolved pores and fractures to a certain degree. | ZHU Shifa ZHU Xiaomin NIU Huapeng HAN Xuefang ZHANG Yueqian YOU Xincai | 2012 | Acta Geologica Sinica(English Edition)2012,86,2: | 12 |
| 19 | Distribution of lipids in modern soils from various regions with continuous climate (moisture-heat) change in China and their climate significance显示文摘Total 26 modern soil samples were collected from various regions under different climate conditions from tropical to arid temperate in China and systematically analyzed for their organic matters by GC/MS in order to evaluate climatic impacts on soil organic components. Abundant lipids molecules were recognized, including n-alkanes, n-alkenones, and long-chain branched alkanes. We find the pre- dominance of main peaks of long-chain n-alkanes (nC29, nC31, nC33) and short-chain ones (nC16, nC17, nC18) records information of soil generation in warm-humid and cold-dry regions. The proportion of n-alkanes (nC16+nC17+nC18) to (nC29+nC31+nC33) varies in good agreement with moisture-heat conditions and thus probably can serve as a new index for climate change. The ratios of C21-/nC22+, nC17/nC31 and (nC15+nC17+nC19) / ( nC27+nC29 +nC31) of n-alkanes, indicating respectively input ratios of lower bacterial alga, aquatic organisms, and higher plants and terraneous organisms, co-vary well in different climate regions from forest to grassland and desert, suggesting that they have also reflected the difference of climates between monsoon region and inland one. The C21-/C22+ ratio of n-alkan-2-one records largely the discrepancy of temperature from north to south of China bordered by the Qinling Mountains, but less humidity. The C21-/C22+ ratio of n-alkan-3-ones changes well with climatic factors, such as tem- perature and humidity. The biogenic source of series A-D long-chain branched alkanes may be derived from some kinds of special epiphyte that most likely live in weak oxic-anoxic and moisture-heat envi- ronments, suggesting their distribution record as well some information on climatic change. All these researches demonstrate that the distributions of lipids molecules in modern soils in China record well signals of climates from quite different climatic regions, and can serve as important climatic proxies to reveal climatic change over China. | WANG YongLi FANG XiaoMin BAI Yan XI XiaoXia ZHANG XiZheng WANG YouXiao | 2007 | Science China Earth Sciences2007,50,4: | 11 |
| 20 | The Limiting Effect of Deep Soil Water on Evapotranspiration of a Subtropical Coniferous Plantation Subjected to Seasonal Drought显示文摘Seasonal drought is a common occurrence in humid climates. The year 2003 was the driest year during the period 1985– 2011 in southeastern China. The objective of this study was to elucidate the impact of the exceptional drought in 2003, compared with eddy flux measurements during 2004–11, on the dynamics of evapotranspiration(ET) and related factors, as well as their underlying mechanisms, in a subtropical coniferous plantation in southeastern China. It was found that daily ET decreased from 5.34 to 1.84 mm during the intensive drought period and recovered to 4.80 mm during the subsquent recovering drought period. Path analysis indicated that ET was mainly determined by canopy conductance and deep soil water content(50 cm) during the intensive drought and recovering drought periods, respectively. The canopy conductance offset the positive effect of air vapor pressure deficit on ET when suffering drought stress, while the canopy conductance enhanced the positive effect of air temperature on ET during the late growing season. Because the fine roots of this plantation are mainly distributed in shallow soil, and the soil water in the upper 40 cm did not satisfy the demand for ET, stomatal closure and defoliation were evident as physiological responses to drought stress. | TANG Yakun WEN Xuefa SUN Xiaomin ZHANG Xinyu WANG Huimin | 2014 | Advances in Atmospheric Sciences2014,31,2: | 11 |