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| 1 | Natural^(15)N abundance in soils and plants in relation to N cycling in a rangeland in Inner Mongolia显示文摘Aims Natural 15N abundance provides integrated information about nitrogen(N)input,transformation and output,indirectly reflecting N cycling traits within terrestrial ecosystems.However,relationships between natural 15N abundance and N cycling processes are poorly understood in China.Here,our primary objectives were to(i)examine the effects of grazing at varying levels of intensity on d15N of soils and plants in a semi-arid grassland;(ii)detect the relationships between d15N of soils and four major N cycling processes(i.e.mineralization,nitrification,denitrification and ammonia volatilization);and(iii)determine whether d15N of soils can be used as an indicator of N cycling in this semi-arid grassland.Methods The field experiment was conducted within the long-term(17-year)grazing enclosures in a semi-arid grassland in Inner Mongolia.Five grazing intensities(0.00,1.33,2.67,4.00 and 5.33 sheep ha1)were designed.d15N values of topsoils(0–10 cm),surface soils(0–2 cm)and plants were measured in 2006.Differences in d15N of soils and plants between the five grazing intensities were examined.Rates of four soil N cycling processes were measured periodically during the 2005 and 2006 growing seasons.The d15N values of topsoils were linked to the four N cycling processes to investigate their relationships.Important Findings The d15N values of topsoils(5.20–5.96&)were substantially higher than the d15N values of plants(2.51–2.93&)and surface soils(1.44–2.92&)regardless of grazing intensities.The 15N-depleted N losses during microbial decomposition of organic matter in concert with the downward movement of residual substrate over time are the possible causes of higher d15N values in topsoils than in surface soils.In addition,the d15N values of topsoils were positively correlated with the d15N values of both plants and surface soils.Grazing,especially the high-intensity grazing(5.33 sheep ha1),resulted in a significant decrease in d15N of surface soils.However,no statistically significant variations in d15N of topsoils and plants were found in response to grazing.The d15N values of topsoils exhibited significant dependence on the cumulative rates of NH3 volatilization,net nitrification and denitrification in 2005 but not in 2006. | Yuqing Xu Jicheng He Weixin Cheng Xuerong Xing Linghao Li | 2010 | Journal of Plant Ecology2010，3，3： | 12 |
| 2 | Ginsenoside Rh2 inhibits proliferation and induces apoptosis in human leukemia cells via TNF-~ signaling pathway显示文摘人参皂甙 Rh2,从人参属人参提取的 triterpene saponin,对多重癌症的展览药理学活动。然而,人参皂甙 Rh2 的 anticancer 机制是不清楚的。在这研究,我们发现人参皂甙 Rh2 有效地禁止生长并且导致 HL-60 房间的 apoptosis。用 microarray 技术,我们发现了那个肿瘤坏死因素 --(TNF-) 清楚地是起来调整的。而且, anti-TNF- 抗体经由 caspase-8, caspase-9,和 caspase-3 激活的抑制减轻了导致 Rh2 的 HL-60 房间 apoptosis。另外, TNF- 起来规定也在另外的对待 Rh2 的癌症房间线被观察。这些结果证明 TNF- 在人参皂甙起一个关键作用导致 Rh2 的房间 apoptosis。 | Jingjia Huang Kunjian Peng Linghao Wang Bin Wen Lin Zhou Tiao Luo Min Su Jijia Li Zhiyong Luo | 2016 | Acta Biochimica et Biophysica Sinica2016，48，8： | 11 |
| 3 | Tribological properties of nanometer cerium oxide as additives in lithium grease显示文摘This paper presents a comparative study of the influence of nanometer-CeO_2(nano-CeO_2) and temperature on tribological and lubricating properties of lithium grease. The morphology and structure of nanocrystals were characterized by means of transmission electron microscopy(TEM) and X-ray diffraction(XRD), respectively. Friction and wear tests were conducted on the friction and wear tester.Results show that the lithium grease with addition of nanometer-CeO_2 has much better friction-reducing and anti-wear performance than that of base grease. When the additive in grease is 0.6 wt%, the friction coefficient(COF) and wear scar diameter(WSD) decrease by 28% and 13% comparing with base grease,respectively. The base grease and grease with 0.6 wt% nanometer-CeO_2 both possess the lowest average COF and wear width at 50 ℃. The worn surface morphology after friction test was analyzed by scanning electron microscopy(SEM) and NANOVEA three-dimensional profilometer. Under the lubrication of the lithium grease containing 0.6 wt% nano-CeO_2. few shallow furrows can be observed on the quite smoothed surface and the WSD decreased. Moreover, It was found that the nano-CeO_2 has been incorporated into the surface protective and lubricious layer by energy dispersive spectrometer(EDS) analysis. | Qiang He Anling Li Yachen Guo Songfeng Liu Yong Zhang Linghao Kong | 2018 | Journal of Rare Earths2018，36，2： | 6 |
| 4 | Responses of gross primary productivity to different sizes of precipitation events in a temperate grassland ecosystem in Inner Mongolia, China显示文摘Changes in the sizes of precipitation events in the context of global climate change may have profound impacts on ecosystem productivity in arid and semiarid grasslands. However, we still have little knowledge about to what extent grassland productivity will respond to an individual precipitation event. In this study, we quantified the duration, the maximum, and the time-integrated amount of the response of daily gross primary productivity(GPP) to an individual precipitation event and their variations with different sizes of precipitation events in a typical temperate steppe in Inner Mongolia, China. Results showed that the duration of GPP-response(τR) and the maximum absolute GPP-response(GPPmax) increased linearly with the sizes of precipitation events(Pes), driving a corresponding increase in time-integrated amount of the GPP-response(GPPtotal) because variations of GPPtotal were largely explained by τR and GPPmax. The relative contributions of these two parameters to GPPtotal were strongly Pes-dependent. The GPPmax contributed more to the variations of GPPtotal when Pes was relatively small(<20 mm), whereas τR was the main driver to the variations of GPPtotal when Pes was relatively large. In addition, a threshold size of at least 5 mm of precipitation was required to induce a GPP-response for the temperate steppe in this study. Our work has important implications for the modeling community to obtain an advanced understanding of productivity-response of grassland ecosystems to altered precipitation regimes. | GUO Qun LI Shenggong HU Zhongmin ZHAO Wei YU Guirui SUN Xiaomin LI Linghao LIANG Naishen BAI Wenming | 2016 | Journal of Arid Land2016，8，1： | 4 |
| 5 | Adsorptive removal of nitrogen-containing compounds from fuel by metal-organic frameworks显示文摘The adsorptive denitrogenation from fuels over three metal-organic frameworks(MIL-96(Al),MIL-53(Al)and MIL-101(Cr))was studied by batch adsorption experiments.Four nitrogen-containing compounds(NCCs)pyridine,pyrrole,quinoline and indole were used as model NCCs in fuels to study the adsorption mechanism.The physicochemical properties of the adsorbents were characterized by XRD,N2physical adsorption,FT-IR spectrum and Hammett indicator method.The metal-organic frameworks(MOFs),especially the MIL-101(Cr)containing Lewis acid sites as well as high specific surface area,can adsorb large quantities of NCCs from fuels.In addition,the adsorptive capacity over MIL-101(Cr)will be different for NCCs with different basicity.The stronger basicity of the NCC is,the more it can be absorbed over MIL-101(Cr).Furthermore,pore size and shape also affect the adsorption capacity for a given adsorbate,which can be proved by the adsorption over MIL-53(Al)and MIL-96(Al).The pseudo-second-order kinetic model and Langmuir equation can be used to describe kinetics and thermodynamics of the adsorption process,respectively.Finally,the regeneration of the used adsorbent has been conducted successfully by just washing it with ethanol. | Zhaoyang Wang Zhiguo Sun Linghao Kong Gang Li | 2013 | Journal of Energy Chemistry2013，22，6： | 4 |
| 6 | Mantle Source Components and Magmatic Evolution for the Comei Large Igneous Province:Evidence from the Early Cretaceous Niangzhong Mafic Magmatism in Tethyan Himalaya显示文摘The Niangzhong diabase dikes,dated at 138.1±0.4 Ma,are located within the outcrop area of the Comei large igneous province(LIP).These diabase samples can be divided into two groups:samples in Group 1 show varying MgO(1.50 wt.%-10.25 wt.%)and TiO_(2)(0.85 wt.%-4.63 wt.%)contents,and enriched initial isotope compositions(^(87)Sr/^(86)Sr(t)=0.7056-0.7112,ε_(Nd)(t)=-0.3-+3.8),with OIB-like REEs and trace elements patterns,resulting from low degree melting of garnet-bearing lherzolite mantle sources;in contrast,samples in Group 2 show limited MgO(4.14 wt.%-7.75 wt.%)and TiO_(2)(0.98 wt.%-1.69 wt.%)contents,and depleted initial isotope compositions(^(87)Sr/^(86)Sr(t)=0.7075-0.7112,ε_(Nd)(t)=+5.5-+6.2),with N-MORB-like REEs and trace elements patterns,resulting from relatively high degree melting of spinel-bearing lherzolite mantle source.Combined with the published representative data about Comei LIP,we summarize that the source components for Comei LIP products include OIB end-member,enriched OIB end-member,and N-MORB end-member,respectively.Melts modeling suggests that magmas in the Comei LIP evolve in a relatively high oxygen fugacity condition,which influenced their fractionation sequences and led to systematic changes of TiO_(2)contents,Ti/Y and Ti/Ti*ratios.From the spatial and temporal distribution of above three end-member samples,deep process of Kerguelen plume during the Comei LIP formation can be interpreted as the interaction among the Kerguelen plume,the overlying lithospheric mantle,and the upwelling asthenosphere.The magmatism of Comei LIP began at~140 Ma and then lasted and peaked at~132 Ma with the progressively lithospheric thinning of eastern Gondwana upon the impact of Kerguelen plume. | Yaying Wang Lingsen Zeng Kejun Hou Li'e Gao Qian Wang Linghao Zhao Jiahao Gao Guangxu Li | 2022 | Journal of Earth Science2022，33，1： | 3 |
| 7 | Spatial variation of net radiation and its contribution to energy balance closures in grassland ecosystems显示文摘Introduction:Low energy balance closure(EBC)at a particular eddy-covariance flux site has increased the uncertainties of carbon,water,and energy measurements and has thus hampered the urgent research of scaling up and modeling analyses through site combinations in regional or global flux networks.Methods:A series of manipulative experiments were conducted in this study to explore the role of net radiation(Rn)in the EBC in relation to spatial variability of vegetation characteristics,source area,and sensor type in three sites of the Inner Mongolian grassland of northern China.Results:At all three sites,the residual fluxes of EBC peaked consistently at 110 W m^(-2).The spatial variability in net radiation was 19 W m^(-2)(5%of R_(n))during the day and 7 W m^(-2)(16%)at night,with an average of 13 W m^(-2)(11%)from eight plot measurements across the three sites.Large area measurements of Rn significantly increased by 9 W m^(-2)during the day and decreased by 4 W m^(-2)at night in the unclipped treatments.Net radiation decreased by 25 W m^(-2)(6%of Rn)at midday and 81 MJ m^(-2)(6%)during a growing season with heavier regular clipping than that in unclipped treatments.The Rn was lower by 11–21 W m^(-2)(~20–40%of Rn)measured by CNR1 than by Q7.1 at night,while there was only 6 W m^(-2)(~1–2%of Rn)difference during the daytime between these two types of commonly used net radiometers.Conclusions:Overall,the inclusion of the uncertainty in available energy accounted for 65%of the~110 W m^(-2)shortfalls in the lack of closure.Clearly,the unclosed energy balance at these three grassland sites remains significant,with unexplored mechanisms for future research. | Changliang Shao Linghao Li Gang Dong Jiquan Chen | 2014 | Ecological Processes2014，3，1： | 3 |
| 8 | Tomographic SAR imaging with large elevation aperture: a P-band small UAV demonstration显示文摘Elevation resolution is an important indicator in tomographic SAR imaging as it represents the ability to discriminate closed targets in elevation. In general, the elevation resolution is proportional to the length of the elevation aperture. However, as the elevation aperture increases, the geometric consistency of the image will undesirably deteriorate and hence fails the image coregistration approach required by the traditional super-resolution tomographic imaging. In this paper, a new super-resolution tomographic imaging method is proposed to overcome the inconsistency problem caused by the large elevation aperture. The core strategy is to get rid of two-dimensional image coregistration by applying a three-dimensional(3 D) back projection like imaging manner: the 3 D space is firstly divided into a 3 D imaging grid, each of which is individually imaged via compressive sensing for super-resolution. The effectiveness of the proposed approach is evaluated by both computer simulations and real P-band UAV SAR data. | Tao ZENG Minkun LIU Yan WANG Zegang DING Linghao LI Zhen WANG Yangkai WEI Jianping WANG | 2022 | Science China(Information Sciences)2022，65，3： | 2 |
| 9 | Rutile to Titanite Transformation in Eclogites and its Geochemical Consequences:An Example from the Sumdo Eclogite,Tibet显示文摘The formation of titanite coronae after rutile is common in retrograde high-to ultrahigh-pressure meta-mafic rocks,which provides a good opportunity to address the geochemical behavior of HFSE in crustal environments.In the Sumdo eclogite,titanite occurs either as a corona around rutile grains or as semi-continuous veins cross-cutting the major foliation,whereas rutile grains occur either as inclusions in garnet or omphacite or as a relict core surrounded by titanite.Textural relationships and trace elements characteristics of rutile and titanite with different occurrences indicate that both minerals preferentially incorporate Nb and Hf over Ta and Zr in aqueous fluid.Moreover,the breakdown of omphacite and epidote could release substantial amounts of aqueous fluids enriched in Ca,Si,Fe and REE,which would react with rutile to form titanite coronae and veins.During this process,water-insoluble elements,like HFSE and HREE,behave like mobile elements,but they do not migrate substantially out of the system,instead,tending to react in situ.This suggests that the aqueous fluids released during the retrograde metamorphic reactions in mafic rocks could not substantially transfer fluidimmobile elements into the overlying mantle wedge in subduction environments. | ZHAO Linghao ZENG Lingsen GAO Li’e HU Mingyue SUN Dongyang ZHANG Lifei | 2023 | Acta Geologica Sinica(English Edition)2023，97，1： | 2 |
| 10 | Effects of Agriophyllum squarrosum seed bank on its colonization in a moving sand dune in Hunshandake Sand Land of China显示文摘 | Bai Wenming Bao Xuemei Li Linghao | 2004 | Journal of Arid Environments2004，59，： | 1 |
| 11 | Spatial variability in soil heat flux at three Inner Mongolia steppe ecosystems显示文摘 | Changliang Shao Jiquan Chen Linghao Li Wenting Xu Shiping Chen Tenney Gwen Jianye Xu Wenli Zhang | 2008 | Agricultural and Forest Meteorology2008，，10： | 1 |
| 12 | Do rhizome severing and shoot defoliation affect clonal growth of Leymus chinensis at ramet population level显示文摘 | Wang Zhengwen Li Linghao Han Xingguo Dong Ming | 2004 | Acta Oecologica2004，26，： | 1 |
| 13 | The pattern between nitrogen mineralization and grazing intensities in an Inner Mongolian typical steppe显示文摘 | Xu Yuqing Li Linghao Wang Qibing | 2007 | Plant and Soil2007，300，6： | 1 |
| 14 | Impacts of grazing intensity on denitrification and N2O production in a semi-arid grassland ecosystem显示文摘 | Yuqing Xu Shiqiang Wan Weixin Cheng Linghao Li | 2008 | Biogeochemistry2008，，2： | 1 |
| 15 | The pattern between nitrogen mineralization and grazing intensities in an Inner Mongolian typical steppe显示文摘 | Yuqing Xu Linghao Li Qibing Wang Quansheng Chen Weixin Cheng | 2007 | Plant and Soil (-)2007，，1： | 1 |
| 16 | Brillouin Scattering Spectrum Analysis Based on Auto-Regressive Spectral Estimation显示文摘汽车回归(AR ) 光谱评价技术被建议分析在 Brillouin 光时间域 refelectometry 散布光谱的 Brillouin。它显示出基于的方法能可靠地估计的那 AR 如果数据长度不是太短的,有比快 Fourier 变换(快速傅里叶变换) 好一些的精确性的 Brillouin 频率移动基于方法。它在一个中等空间决定在快速傅里叶变换上启用大约 3 次改进。 | Mengyun HUANG Wei LI Zhangyun LIU Linghao CHENG Bai-Ou GUAN | 2018 | Photonic Sensors2018，8，2： | 1 |
| 17 | Impacts of urea N addition on soil microbial community in a semi-arid temperate steppe in northern China显示文摘 | Naili Zhang Shiqiang Wan Linghao Li Jie Bi Mingming Zhao Keping Ma | 2008 | Plant and Soil (-)2008，，1： | 1 |
| 18 | The pattern be- tween nitrogen mineralization and grazing intensities in an Inner Mongolian typical steppe显示文摘 | Xu Yuqing Li Linghao Wang Qibing | 2007 | Plant and Soil2007，300，12： | 1 |
| 19 | Yamal LNG Project and Made-in-China Equipment Going Globally显示文摘The Yamal LNG project in the Arctic area of Russia(Yamal LNG) involves many aspects including management of the project's finances, construction of LNG plants and special ships, exploration and development, liquefaction, storage, transportation, and distribution of natural gas. The project is very demanding in terms of quality, standards, and technologies required. China was chosen to carry out modular fabrication for the projects. Six Chinese offshore engineering companies were awarded with contracts to manufacture modules that weigh more than 400,000 tons. Other Chinese companies were also enlisted to provide manufacturing, production, and processing assistance along with material and equipment supplies for the project. Their involvement in the project showed to the world not just their comprehensive strength in both LNG technologies and equipment fabrication but also their potential to become a world class competitor in the petroleum engineering market, as demonstrated by their strong capacity, attractive cost, and short delivery period for module fabrication during their participation in the Yamal LNG project. | Li Yulong Kong Linghao Liu Jia | 2016 | China Oil & Gas2016，23，3： | 1 |
| 20 | Seasonal distribution of increased precipitation in maternal environments influences offspring performance of Potentilla tanacetifolia in a temperate steppe ecosystem显示文摘Aims Precipitation is predicted to increase in arid and semiarid regions under climate change,with greater changes in intra-and interannual distribution in the future.As a major limiting factor in these regions,changes in precipitation undoubtedly influence plant growth and productivity.However,how the temporal shifts in pre-cipitation will impact plant populations are uncertain.Methods A 3-year field experiment and a greenhouse experiment were conducted in a temperate grassland in northern China to examine the impacts of seasonal(spring and summer)increased precipitation on offspring performance of a common species,Potentilla tanacetifolia.Important Findings Our results showed that the amounts and timing of increased precipitation both played important roles in regulating offspring performance of P.tanacetifolia in the temperate steppe ecosystem.Increased precipitation in spring at maternal stage stimulated seed production,germination percentage and seedling biomass,whereas increased precipitation in summer at maternal stage stimulated seedling biomass.The timing of increased precipitation influenced seed attributes,whereas the amount of increased precipitation influenced offspring seedling biomass.Our results indicate that population development of P.tanacetifolia may be underestimated under future increased precipitation regime,if the transgenerational effect is not taken into account. | Yang Li Longyu Hou Bing Song Shiqiang Wan Xiaoqin Sun Linghao Li | 2019 | Journal of Plant Ecology2019，12，4： | 1 |
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