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1Early Paleozoic ridge subduction in the Chinese Altai: Insight from the abrupt change in zircon Hf isotopic compositions显示文摘Zircons were separated from granitoids, gneisses, and sedimentary rocks of the Chinese Altai. Those with igneous characteristics yielded U-Pb ages of 280-2800 Ma, recording a long history of magmatic activity in the region. Zircon Hf isotopic compositions show an abrupt change at ~420 Ma, indicating that prior to that time the magmas came from both ancient and juvenile sources, whereas younger magmas were derived mainly from juvenile material. This may imply that the lithosphere was signifi- cantly modified in composition by a rapid addition of melt from the mantle. We suggest that this dramatic change was due to the onset of ridge subduction, which can account not only for the formation of voluminous granitoids, mafic rocks with complex compositions, and the association of adakite + high-Mg andesite + boninite + Nb-enriched basalt, but also for the coeval high-T, low-P metamorphism.SUN Min LONG XiaoPing CAI KeDa JIANG YingDe WANG BuYun YUAN Chao ZHAO GuoChun XIAO WenJiao WU FuYuan 2009Science China Earth Sciences2009,52,9:33
2How many sutures in the southern Central Asian Orogenic Belt:Insights from East Xinjiang-West Gansu(NW China)?显示文摘How ophiolitic mèlanges can be defined as sutures is controversial with regard to accretionary orogenesis and continental growth.The Chinese Altay,East junggar,Tianshan,and Beishan belts of the southern Central Asian Orogenic Belt(CAOB) in Northwest China,offer a special natural laboratory to resolve this puzzle.In the Chinese Altay,the Erqis unit consists of ophiolitic melanges and coherent assemblages,forming a Paleozoic accretionary complex.At least two ophiolitic melanges(Armantai,and Kelameili) in East Junggar,characterized by imbricated ophiolitic melanges,Nb-enriched basalts,adakitic rocks and volcanic rocks,belong to a Devonian-Carboniferous intra-oceanic island arc with some Paleozoic ophiolites,superimposed by Permian arc volcanism.In the Tianshan,ophiolitic melanges like Kanggurtag,North Tianshan,and South Tianshan occur as part of some Paleozoic accretionary complexes related to amalgamation of arc terranes.In the Beishan there are also several ophiolitic melanges,including the Hongshishan,Xingxingxia-Shibangjing,Hongliuhe-Xichangjing,and Liuyuan ophiolitic units.Most ophiolitic melanges in the study area are characterized by ultramafic,mafic and other components,which are juxtaposed,or even emplaced as lenses and knockers in a matrix of some coherent units.The tectonic settings of various components are different,and some adjacent units in the same melange show contrasting different tectonic settings.The formation ages of these various components are in a wide spectrum,varying from Neoproterozoic to Permian.Therefore we cannot assume that these ophiolitic melanges always form in linear sutures as a result of the closure of specific oceans.Often the ophiolitic components formed either as the substrate of intra-oceanic arcs,or were accreted as lenses or knockers in subduction-accretion complexes.Using published age and paleogeographic constraints,we propose the presence of (1) a major early Paleozoic tectonic boundary that separates the Chinese Altay-East Junggar multiple subduction systems of the southern Siberian active margin from those of the northern Tarim;and (2) a major Permian suture zone that separates the Tianshan-Beishan from the northern active margin of the Tarim Craton.These new observations and interpretations have broad implications for the architecture and crustal growth of central Asia and other ancient orogens as well.Wenjiao Xiao Chunming Han Wei Liu Bo Wan Ji'en Zhang Songjian Ao Zhiyong Zhang Dongfang Song Zhonghua Tian Jun Luo 2014Geoscience Frontiers2014,5,4:31
3Behavior and mechanism of the adsorption/desorption of tectonically deformed coals显示文摘The physical and chemical texture of tectonically deformed coals produced by various formational mechanisms are different from those of primary coals,thus resulting in major differences among the physical properties of the reservoirs of these coals. We have studied the adsorption/desorption be-havior of tectonically deformed coals by the use of isothermal adsorption/desorption experiments un-der equilibrium moisture condition. Experiments of isothermal adsorption/desorption of methane or multi-component gases have indicated that,the adsorption curves of coals with a low degree of tec-tonic deformation conform to the type of isothermal adsorption curve described by the Langmuir equation; the methane adsorption curves of coals with strong tectonic deformation cannot be de-scribed by the Langmuir equation. The adsorption/desorption process of methane and multi-compo-nent gases in the deformed coals is not consistent with primary coals,which form an effect of hys-teresis in different kinds of tectonically deformed coals. With the change of pore structure of tectoni-cally deformed coals at reservoir condition,the added adsorbed CH4 in the experiments is desorbed on the pore surface of coals during the pressure reduction process. Thus,the result shows that the ad-sorption volume in the process of desorbing is greater than that in adsorbing. Because of the defor-mation,structural change,and transformation of the adsorption potential field of coals,it is essential to form a new kind of isothermal adsorption curve and the hysteresis effect of the desorption process.JU YiWen JIANG BO HOU QuanLin TAN YongJie WANG GuiLiang XIAO WenJiao 2009Chinese Science Bulletin2009,54,1:26
4Cyclical one-way continental rupture-drift in the Tethyan evolution: Subduction-driven plate tectonics显示文摘Numerous continents have rifted and drifted away from Gondwana to repeatedly open ocean basins over the past-500 millionyears.These Gondwana-derived continents drifted towards and collided with components of the Eurasian continent to successively close the preexisting oceans between the two.Plate tectonics satisfactorily describes the continental drift from Gondwana to Eurasia but does not define the geodynamic mechanism of continuously rifting to collisions of continents in the Tethy an Realm.After reappraisal of geological records of the rift,collision and subduction initiation from the surface and various geophysical observations from depth,we propose that Eurasia-directed subducting oceanic slabs would have driven Tethyan system in the Phanerozoic.The Eurasia-directed subduction would have dragged the passive Gondwana margin to rift and drift northwards,giving birth to new oceans since the Paleozoic.The closure of preexisting oceans between the Gondwana-derived continents and Eurasia led to continental collisions,which would have induced the initiation of oceanic subduction in the Tethyan Realm.Multiple episodic switches between collision-subduction-rift repeatedly led to the separation of continental fragments from Gondwana and dragged them to drift towards Eurasia.The final disappearance of Neo-Tethy s would have induced collision of the Gondwana-derived continents with the Eurasian continent,giving rise to the Cenozoic Alpine-Zagros-Himalayan collisional system.Therefore,the Eurasia-directed oceanic subduction would have acted as a’one-way train’that successively transferred the ruptured Gondwana continental fragments in the south,into the terminal in the north.In this regard,the engine of this'Tethyan one-way train'is the negative buoyancy of subducting oceanic slabs.Bo WAN Fuyuan WU Ling CHEN Liang ZHAO Xiaofeng LIANG Wenjiao XIAO Rixiang ZHU 2019Science China Earth Sciences2019,62,12:21
5Anatomy of composition and nature of plate convergence: Insights for alternative thoughts for terminal India-Eurasia collision显示文摘The pattern and timing of collision between India and Eurasia have long been a major concern of the international community. However, no consensus has been reached hitherto. To explore and resolve the disagreements in the Himalayan study,in this paper we begin with the methodology and basic principles for the anatomy of composition and nature of convergent margins,then followed by an effort to conduct a similar anatomy for the India-Eurasia collision. One of the most common patterns of plate convergence involves a passive continental margin, an active continental margin and intra-oceanic basins together with accreted terranes in between. The ultimate configuration and location of the terminal suture zone are controlled by the basal surface of the accretionary wedge, which may show fairly complex morphology with Z-shape and fluctuant geometry. One plausible method to determine the terminal suture zone is to dissect the compositions and structures of active continental margins. It requires a focus on various tectonic elements belonging to the upper plate, such as accretionary wedges, high-pressure(HP)-ultra-high-pressure(UHP) metamorphic rocks, Barrovian-type metamorphic rocks and basement nappes, together with superimposed forearc basins.Such geological records can define the extreme limits and the intervening surface separating active margin from the passive one,thus offering a general sketch for the surface trace of the terminal suture zone often with a cryptic feature. Furthermore, the occurrence of the cryptic suture zone in depth may be constrained by geophysical data, which, in combination with outcrop studies of HP-UHP metamorphic rocks, enables us to outline the terminal suture zone. The southern part of the Himalayan orogen records complicated temporal and spatial features, which are hard to be fully explained by the classic 'two-plate-one-ocean' template,therefore re-anatomy of the compositions and nature for this region is necessitated. Taking advantage of the methodology and basic principles of plate convergence anatomy and synthesizing previous studies together with our recent research, we may gain new insights into the evolution of the Himalayan orogeny.(1) The Yarlung-Zangbo ophiolite is composed of multiple tectonic units rather than a single terminal suture zone, and a group of different tectonic units were juxtaposed against each other in the backstop of the Gangdese forearc.(2) The Tethyan Himalayan Sequence(THS) contains mélanges with typical block-in-matrix structures, uniform southwards paleocurrents and age spectra of detrital zircons typical of Eurasia continent. All of these facts indicate that the THS belonged to Eurasia plate before the terminal collision, emplaced in the forearc of the Gangdese arc.(3) The Greater Himalayan Crystalline Complex(GHC) and Lesser Himalayan Sequence(LHS) comprise complex components including eclogites emplaced into the GHC and the upper part of the LHS. Judging from the fact that HP-UHP metamorphic rocks are exhumed and emplaced in the upper plate, the GHC and the upper part of the LHS where eclogite occur should be assigned to the upper plate, lying above the terminal subduction zone surface. It is the very surface along which the continuous subduction of the India subcontinent occurred, therefore acting as the terminal, cryptic suture. From the suture further southward, the bulk rock associations of the LHS and Sub-Himalayan Sequence(Siwalik) show little affinity of mélange, probably belonging to the foreland system of the India plate. By the anatomy of tectonic features of all the tectonic units in the Himalayan orogen as well as the ages of the subduction-accretion related deformation, we conclude that the terminal India-Eurasia collision occurred after 14 Ma, the timing of the metamorphism of the eclogites emplaced into the upper plate. The development of rifts stretching in N-S direction in Tibet and tectonic events with the transition from sinistral to dextral movements in shear zones, such as the Ailaoshan fault in East Tibet, can coordinately reflect the scale and geodynamic influence of the India-Eurasia convergence zone.By conducting a detailed anatomy of the southern Himalayas, we propose a new model for the final collision-accretion of the Himalayan orogeny. Our study indicates that the anatomy of structures, composition, and tectonic nature is the key to a better understanding of orogenic belts, which may apply to all the orogenic belts around the world. We also point out that several important issues regarding the detailed anatomy of the structures, compositions and tectonic nature of the Himalayan orogeny in future.XIAO WenJiao AO SongJian YANG Lei HAN ChunMing WAN Bo ZHANG Ji'En ZHANG ZhiYong LI Rui CHEN ZhenYu SONG ShuaiHua 2017Science China Earth Sciences2017,60,6:20
6The discovery of the oldest rocks in the Kuluketage area and its geological implications显示文摘The basement rocks in the Kuluketage area are composed predominately of tonalite-trondhjemite-granodiorite rocks, and occured mainly in Xinger and Korla. U-Pb dating of TTG gneiss near Korla yielded a late Neoarchean weighted mean 207Pb/206Pb age of 2.65 Ga, which is the oldest published age for the TTG rocks in the Kuluketage area and thus suggests that Archean terrane in the area was formed in the late Neoarchean. The Korla gneiss is much younger than the TTG rocks in the northern Altyn Tagh, eastern Tarim Craton, indicating that the oldest terrane of the Tarim Craton was exposed probably in the northern Altyn Tagh. Until late Neoarchean, the Tarim continent extends to the Kuluketage area and finally had generated a relatively large uniform Archean basement within the craton. Zircon Hf isotopic analyses of the TTG gneiss give low εHf(t) values (-5 to 1) with Paleoarchean to Mesoarchean two-stage model ages (TDM2) between 3.0 and 3.3 Ga, suggesting that the basement rocks in the northern Tarim Craton were derived dominately from partial melting of Paleoarchean to Mesoarchean juvenile crustal material. The Hf model ages, therefore, indicate that no continent crust older than 3.3 Ga existed in the Kuluketage area.LONG XiaoPing YUAN Chao SUN Min XIAO WenJiao ZHAO GuoChun ZHOU KeFa WANG YuJing HU AiQin 2011Science China Earth Sciences2011,54,3:16
7Continental reconstruction and metallogeny of the Circum-Junggar areas and termination of the southern Central Asian Orogenic Belt显示文摘Continental reconstructions in Central Asia are represented by orogenesis along some large orogenic belts in the Altaid collage(Fig.1)or Central Asian Orogenic Belt(CAOB),which separate the East European and Siberian cratons to the north from the Tarim and North China cratons to the south(Sengor et al.,1993;Jahn et al.,2004;Windley et al.,2007;Qu et al.,2008;Wenjiao Xiao Min Sun M.Santosh 2015Geoscience Frontiers2015,6,2:16
8Impact of chilling injury and global warming on rice yield in Heilongjiang Province显示文摘这研究为米饭集中于索引在 Heilongjiang 省的寒心的损害在 19602009 期间。第一,我们比较了由与传统的方法种密度的米饭加权的一个新导出的气候数据,并且发现新的是更合理的在庄稼收益上估计气候变化的影响。就在第二,寒心的索引由气象学、国家、国际的层次定义的省寒心的米饭的频率和紧张而言被估计。,结果证明气象学的标准对延期类型损害合适国际的,在阀值(GDDn ) 下面种度白天的所谓的和,描绘的最好为米饭的无菌类型的寒心的损害。当二个独立变量到达了约 92% ,包括两损害的米饭收益时间系列模型的解释能力打字(p < 0.05 ) 。最后,我们断定到米饭收益的人和天气因素的贡献率是大约87.2%和12.8%分别地,并且作为光增加的趋势因为无菌类型的寒心的损害在在最近的年里出发到流动时期期间被发现,为在未来在 Heilongjiang 省种的米饭显示高寒心的风险全球温暖。LIU Xiaofei ZHANG Zhao SHUAI Jiabing WANG Pin SHI Wenjiao TAO Fulu CHEN Yi 2013Journal of Geographical Sciences2013,23,1:16
9Accretionary processes and metallogenesis of the Central Asian Orogenic Belt:Advances and perspectives显示文摘As one of the largest Phanerozoic orogens in the world,the Central Asian Orogenic Belt(CAOB)is a natural laboratory for studies of continental dynamics and metallogenesis.This paper summarizes the research progresses of the accretionary processes and metallogenesis of the CAOB since the Peopled Republic of China was founded,and puts forward the prospect for future research.During the early period(1950s-1970s),several geological theories were applied to explain the geological evolution of Central Asia.In the early period of China's reform and opening-up,the plate tectonics theory was applied to explain the evolution of the northern Xinjiang and Xingmeng regions,and the opinion of subduction-collision between Siberian Kazakhstan and China-North Korea-Tarim plates was proposed.The idea of the Solonker-Yanbian suture zone was established.In the 1990s,the study of the CAOB entered a period of rapid development.One school of scholars including geologists from the former Soviet Union proposed a multi-block collision model for the assemblage of the CAOB.In contrast,another school of scholars,led by a Turkish geologist,Celal Sengor,proposed that the Altaids was formed through the growth and strike-slip duplicates of a single island arc,and pointed out that the Altaids is a special type of collisional orogen.During this period,Chinese geologists carried out a lot of pioneering researches on ophiolites and high-pressure metamorphic rocks in northern China,and confirmed the main suture zones accordingly.In 1999,the concept of'Central Asian metallogenic domain'was proposed,and it became one of the three major metallogenic domains in the world.Since the 21st century,given the importance for understanding continental accretion and metallogenic mechanism,the CAOB has become the international academic forefront.China has laid out a series of scientific research projects in Central Asia.A large number of important scientific research achievements have been spawned,including the tectonic attribution of micro-continents,timing and tectonic settings of ophiolites,magmatic arcs,identification and anatomy of accretionary wedges,regional metamorphism-deformation,(ultra)high-pressure metamorphism,ridge subduction plume-plate interaction archipelagic paleogeography and spatio-temporal framework of multiple accretionary orogeny,continental growth accretionary metallogenesis,structural superposition and transformation etc.These achievements have made important international influences.There still exist the following aspects that need further study:(1)Early evolution history and subduction initiation of the Paleo-Asian Ocean;(2)The accretionary mechanism of the extroversion Paleo-Asian Ocean;(3)The properties of the mantle of the Paleo-Asian Ocean and their spatiotemporal distribution;(4)The interaction between the Paleo-Asian Ocean and the Tethys Ocean;(5)Phanerozoic continental growth mechanism and its global comparison;(6)Accretionary metallogenic mechanism of the Central Asian metallogenic domain;and(7)Continental transformation mechanism.Wenjiao XIAO Dongfang SONG Brian FWINDLEY Jiliang LI Chunming HAN Bo WAN Ji'en ZHANG Songjian AO Zhiyong ZHANG 2020Science China Earth Sciences2020,63,3:16
10Overexpression of potato miR482e enhanced plant sensitivity to Verticillium dahliae infection显示文摘Verticillium wilt of potato is caused by the fungus pathogen Verticillium dahliae. Present s RNA sequencing data revealed that miR482 was in response to V. dahliae infection but the function in potato is elusive. Here, we characterized potato miR482 family and its putative role resistance to Verticillium wilt. Members of the potato mi R482 superfamily are variable in sequence, but all variants target a class of disease-resistance proteins with nucleotide binding site(NBS)and leucine-rich repeat(LRR) motifs. When potato plantlets were infected with V. dahliae, the expression level of miR482e was downregulated, and that of several NBS-LRR targets of miR482e were upregulated. Transgenic potato plantlets overexpressing miR482e showed hypersensitivity to V. dahliae infection. Using s RNA and degradome datasets, we validated that miR482e targets m RNAs of NBS-LRR disease-resistance proteins and triggers the production of trans-acting(ta)si RNAs, most of which target m RNAs of defense-related proteins. Thus, the hypersensitivity of transgenic potato could be explained by enhanced miR482e and miR482e-derived tasi RNA-mediated silencing on NBS-LRR-disease-resistance proteins. It is speculated that a miR482-mediated silencing cascade mechanism is involved in regulating potato resistance against V. dahliae infection and could be a counter defense action of plant in response to pathogen infection.Liu Yang Xiaoying Mu Chao Liu Jinghui Cai Ke Shi Wenjiao Zhu Qing Yang 2015Journal of Integrative Plant Biology2015,57,12:14
11A review on statistical models for identifying climate contributions to crop yields显示文摘在庄稼收益和天气上使用历史的数据校准相对简单的回归方程的统计模型广泛地并且广泛地在以前的研究被使用了,并且提供了一种普通选择给基于过程的模型,它在栽培变种,管理,和土壤条件上要求广泛的输入数据。然而,很少的研究被进行了系统地考察以前的统计模型让 indentifying 气候贡献收割收益。这份报纸介绍三个主要统计方法,即,时间系列模型,剖面图模型和面板当模特儿,它被用来在 agrometeorology 的领域里识别如此的问题。通常,研究空间规模能用统计模型被分成二种类型,包括地点规模和地区性的规模(例如全球规模,国家规模,省的规模和县可伸缩) 。四个问题在由统计模型识别庄稼收益的反应敏感到气候变化存在。这些问题包括空间、时间的规模的程度,非气候的趋势移动, colinearity 在气候变量和改编的非考虑存在。为上述四个问题的各自的决定最后在统计模型的未来上在观点的节被提出了。SHI Wenjiao TAO Fulu ZHANG Zhao 2013Journal of Geographical Sciences2013,23,3:14
12Spatio-temporal characteristics of intra-urban land cover in the cities of China and USA from 1978 to 2010显示文摘城市的陆地盖子在一个城市生态系统上有主要影响服务和它的城市的居住环境的固有的质量。中国城市里的不可渗透的表面区域和绿区域的时间空间的分发与美国城市比较展出了显著地显著的差别。这研究集中了于用六中国人(n=3 ) 和美国(n=3 ) 监视并且比较时间空间的动力学,陆地盖子模式和功能的区域的特征城市。学习数据在时期期间从 Landsat TM/MSS 形象被对照 19782010。结果显示中国城市在过去的三十年简洁地发展了,当开发显著地在美国城市之中被驱散时。美国城市里的吝啬的植被范围是在中国城市的凝块之中发现了的约 2.2 次。在中国城市以内的陆地使用类型是显著地更复杂,与不可渗透的表面区域的更高的密度。相反地,中心商业区(CBD ) 和在美国城市以内的居住区域由不可渗透的表面区域的一个更低的比例和绿土地的一个更高的比例组成。结果可以被用来在中国和美国的城市的计划和管理努力贡献未来。CHI Wenfeng SHI Wenjiao KUANG Wenhui 2015Journal of Geographical Sciences2015,25,1:11
13Development of a surface modeling method for mapping soil properties显示文摘(HASM ) 高精确性表面建模是能被使用玷污性质插值的一个方法。在这份报纸,我们在场 HASM 的一个方法联合了地理信息让土壤性质插值(HASM-SP ) 改进精确性。把类型,陆地使用类型和父母岩石基于土壤, HASM-SP 被使用插入内推在典型红土壤玷污可得到的 P,李, pH, alkali-hydrolyzable N,全部的 K 和 Cr 多山的区域。评估 HASM-SP 的表演,我们把它的表演与作比较平常的 kriging (好) ,平常的 kriging 联合了地理信息(OK-Geo ) 并且成层 kriging (SK ) 。结果证明方法包括 HASM-SP 与地理信息结合了, OK-Geo 获得了更低的评价偏爱。HASM-SP 也看了更少的 MAE 和 RMSE 它什么时候与另外的三个方法(OK-Geo,好和 SK ) 相比。更多细节由于为土壤性质的空间变化给了突然的边界的地理信息的不同类型的联合为土壤性质在 HASM-SP 地图被介绍。因此, HASM-SP 不能仅仅减少预言错误而且能与地理信息的分发一致,它做土壤性质的空间模拟更合理。HASM-SP 让充实不仅高精确性表面当模特儿土壤性质的理论,而且在资源管理并且环境计划为申请提供了一个科学方法。SHI Wenjiao LIU Jiyuan DU Zhengping YUE Tianxiang 2012Journal of Geographical Sciences2012,22,4:11
14Silurian Seismites in Hanxia,Yumen,North Qilian Mountains,and Their Tectonic Significance显示文摘The Caledonian orogenic belt of the North Qilian Mountains is anintensely active structure belt. In the process of the Late Caledonian syn-orogeny, the North Qilian-Hexi Corridor area was situated on the tectonic background of a syn-orogenic basin. In response to the orogenic process of the North Qilian Mountains, typical earthquake event deposits-seismites of the Silurian were widely distributed around Hanxia of Yumen City, the Liyuan River of Sunan County and Biandukou of Minle County. In the Hanxia area, where seismites are typically developed, clastic deposits of tidal-flat facies are the background deposits of the Hanxia Formation. The earthquake event deposits are characterized by sandy mudstone veins, synsedimentary microfractures, micro-corrugated laminations and earthquake breccias, which in turn constitute complex seismites, featuring seismic corrugation, shattering and liquefied sandy mudstone veins, auto clastic breccias and intraclastic parabreccias. The seismites and tidal flat deposits formed typical sequences of earthquake event deposits.DU Yuansheng, GONG Shuyun, HAN Xin, WANG Jiasheng, GU Songzhuand LIN Wenjiao Faculty of Earth Sciences, China University of Geosciences, Wuhan 430074, Hubei 2001Acta Geologica Sinica(English Edition)2001,75,4:11
15A new ophiolitic mélange containing boninitic blocks in Alxa region:Implications for Permian subduction events in southern CAOB显示文摘The Alxa region, located in the southernmost part of Central Asian Orogenic Belt, is a key region for understanding the tectonic processes associated with the closure of the Paleo-Asian Ocean. Issues of late Paleozoic tectonic settings and tectonic unit divisions of the Alxa region still remain controversial. In this study, we report a new ophiolitic mélange named the Tepai ophiolitic mélange in the northern Alxa region, northwest of Alxa Youqi. The tectonic blocks in the Tepai ophiolitic mélange are mainly composed of serpentinized peridotites, serpentinites, mylonitized gabbros, gabbros, basalts, and quartzites, with a matrix comprising highly deformed clastic rocks. A gabbro exhibits a zircon LA-ICP-MS Ue Pb age of278.4 ± 3.3 Ma. Gabbros exhibit high Mg O and compatible element contents, but extremely low TiO_2,totally rare earth element and high field strength element contents. These rocks exhibit light rare earth element depleted patterns, and display enriched in large-ion lithophile elements and depleted in high field strength elements. Boninite-like geochemical data show that they were formed in a subductionrelated environment, and derived from an extremely depleted mantle source infiltrated by subduction-derived fluids and/or melts. The Tepai ophiolitic mélange exhibits similar zircon U-Pb-O isotopic compositions and whole-rock geochemical characteristics to those of the Quagan Qulu ophiolite.Therefore, we propose that the Tepai ophiolitic mélange may have been the western continuation of the Quagan Qulu ophiolite. Our new finding proves the final closure of the Paleo-Asian Ocean might have taken place later than the early Permian.Rongguo Zheng Jinyi Li Wenjiao Xiao Lijia Wang 2018Geoscience Frontiers2018,9,5:10
16SKIP Confers Osmotic Tolerance during Salt Stress by Controlling Alternative Gene Splicing in Arabidopsis显示文摘译解位于下面的机制种回答到不能生活的应力为改进植物压力抵抗是关键的。大部分在 transcriptional 水平响应盐应力对基因表示的规定被知道;然而,很少在 posttranscriptional 水平对这个过程被知道。最近,我们证明那个翻斗车是与钟基因 pre-mRNAs 交往并且为调整他们拼接的选择和 mRNA 成熟是必要的 spliceosome 的一个部件。在这研究,我们发现 skip-1 植物对盐和渗透的压力过分敏感,并且那个翻斗车为拼接的选择和几咸忍耐的基因的 mRNA 成熟被要求,包括 NHX1, CBL1, P5CS1, RCI2A,和 PAT10。染色体宽的分析表明那个翻斗车调停在咸压力的条件下面许多基因拼接的选择,和在 skip-1 的其他的拼接事件的那个大多数包含 intron 保留和罐头 generatea 在抄录 mRNA 的早熟的结束 codon。翻斗车也控制由 modulating 的其他的拼接 5 和 3 的识别或劈开拼接在咸压力的条件下面的施主和领受人地点。因此,这研究探讨的基本问题拼接的 mRNA 在植物的机械在 posttranscriptional 水平贡献咸压力的回答,并且提供在其他的拼接和盐忍耐之间的一个连接。Jinlin Feng dingjing Li Zhaoxu Gao Yaru Lu Junya Yu Qian Zheng Shuning Yan Wenjiao Zhang Hang He Ligeng Ma Zhengge Zhu 2015Molecular Plant2015,8,7:10
17Development of quantitative methods for detecting climate contributions to boundary shifts in farming-pastoral ecotone of northern China显示文摘易碎的区域上的气候变化的量的效果是对气候变化的回答的地里的一个热话题。以前的研究把品质上记录气候的影响在耕作牧剧交错群落(FPE ) 在边界移动上变化;然而,为检测气候贡献的量的方法仍然保持相对有限。自从 1970,基于气象学的车站的长期的数据和陆地使用的解释, 1970 年代, 1980 年代, 1990 年代和 2000 年代的气候和陆地使用边界被描出。为了检测气候贡献到 FPE 边界,变,我们开发了二个量的方法在东方西方探索气候和陆地使用边界的空间时间的模式(或南方北方)( 渔网方法) 并且横断方向(数字海岸线分析系统, DSAS 方法) 。结果显示重要差别在不同时期期间在不同区域在气候边界,陆地使用边界,以及气候贡献被展出。西北 FPE 有更小的变化,当东北 FPE 有更大的移动时。在更大的 Hinggan 山和内部蒙古的高原的东南穗的西北部分,气候边界的移动是显著地与陆地使用边界有关。在一个东方西方方向的气候贡献从 10.7% ~ 44.4%,并且那些从 4.7% ~ 55.9% 在一个南方北方方向变化了。从 DSAS 的结果的多数与从渔网的那些一致。DSAS 方法为在小规模的精确察觉更精确、合适,而渔网方法简单在大规模很快并且直接进行统计分析。我们的研究将是有用的适应气候变化,以开发生产潜力,以及在北中国保护 FPE 的环境。SHI Wenjiao LIU Yiting SHI Xiaoli 2017Journal of Geographical Sciences2017,27,9:8
18A fundamental theorem for eco-environmental surface modelling and its applications显示文摘We propose a fundamental theorem for eco-environmental surface modelling(FTEEM) in order to apply it into the fields of ecology and environmental science more easily after the fundamental theorem for Earth’s surface system modeling(FTESM). The Beijing-Tianjin-Hebei(BTH) region is taken as a case area to conduct empirical studies of algorithms for spatial upscaling, spatial downscaling, spatial interpolation, data fusion and model-data assimilation, which are based on high accuracy surface modelling(HASM), corresponding with corollaries of FTEEM. The case studies demonstrate how eco-environmental surface modelling is substantially improved when both extrinsic and intrinsic information are used along with an appropriate method of HASM. Compared with classic algorithms, the HASM-based algorithm for spatial upscaling reduced the root-meansquare error of the BTH elevation surface by 9 m. The HASM-based algorithm for spatial downscaling reduced the relative error of future scenarios of annual mean temperature by 16%. The HASM-based algorithm for spatial interpolation reduced the relative error of change trend of annual mean precipitation by 0.2%. The HASM-based algorithm for data fusion reduced the relative error of change trend of annual mean temperature by 70%. The HASM-based algorithm for model-data assimilation reduced the relative error of carbon stocks by 40%. We propose five theoretical challenges and three application problems of HASM that need to be addressed to improve FTEEM.Tianxiang YUE Na ZHAO Yu LIU Yifu WANG Bin ZHANG Zhengping DU Zemeng FAN Wenjiao SHI Chuanfa CHEN Mingwei ZHAO Dunjiang SONG Shihai WANG Yinjun SONG Changqing YAN Qiquan LI Xiaofang SUN Lili ZHANG Yongzhong TIAN Wei WANG Ying’an WANG Shengnan MA Hongsheng HUANG Yimin LU Qing WANG Chenliang WANG Yuzhu WANG Ming LU Wei ZHOU Yi LIU Xiaozhe YIN Zong WANG Zhengyi BAO Miaomiao ZHAO Yapeng ZHAO Yimeng JIAO Ufra NASEER Bin FAN Saibo LI Yang YANG John PWILSON 2020Science China Earth Sciences2020,63,8:7
19Homeostasis of Brassinosteroids Regulated by DRL1, a Putative Acyltransferase in Arabidopsis显示文摘在调整工厂生长和开发并且在对多样的环境暗示作出回应的各种各样的方面的 Brassinosteroids (BR ) 戏必需品角色,和他们的新陈代谢是在工厂调整他们的动态平衡的一个重要方法。这里,我们识别了主导的异种,矮子和圆 leaf-1 (drl1-D ) ,它展出弱 BR 缺乏或 BR 感觉迟钝的变异的显型,包括短、圆的叶子,延长老朽,相形见绌的形状,和 BR 应答的基因的改变的表示层次。胚轴长度和根抑制试金建议 drl1-D 异种通常对 BR 作出回应,但是减少了 BR 发信号产量。几 BR,包括的 typhasterol (TY ) , 6-deoxotyphasterol (6-deoxoTY ) ,和 6-deoxocastasterone (6-deoxoCS ) 的内长的层次,比在在 drl1-D 异种是显著地更低的野类型。DRL1 基因编码 acyltransferase 并且是广泛地在叶子,根,花,和 siliques 表示了。没有 DRL1 和它的相当或相同的事物的植物是更大的,提高的 BR 发信号。DRL1 的表示被 eBL 导致并且由骆驼毛的织物禁止了。DRL1 被通过酯化作用催化 BR 变化形式多半涉及 BR 新陈代谢,它在调整 BR 动态平衡并且在 Arabidopsis 对不能生活的压力作出回应起重要作用。Wenjiao Zhu Haijiao Wang Shozo Fujioka Tao Zhou Hailong Tian Weisheng Tian Xuelu Wang 2013Molecular Plant2013,6,2:7
20Contributions of climate, varieties, and agronomic management to rice yield change in the past three decades in China显示文摘和一个庄稼模拟模型,在四个代表性的 agro 气象学的车站的长期的地实验数据被用来在过去的三十年解开大米收益变化的气候变化,变化更新,和授精管理的贡献。我们发现在 1981-2009 变化期间,更新由 16%-52% 增加了米饭产量,管理改进由产量从 16% ~ 10% 改变了的米饭的气候变化的 0-16% ,和贡献增加了产量。变化更新和气候的否定影响在米饭生产上改变的管理改进偏移量。在主要气候变量之中,在太阳的放射的减少到 0.1%per 年平均减少了米饭产量。温度变化的影响有一个明确的空间模式。它在 Tongcheng 车站在 Xinbin 和 Ganyu 车站并且为迟了的米饭为单个米饭每年由 0.04%-0.4% 增加了产量,由在 Tongcheng 在 Mianyang 车站和早米饭为单个米饭每年由 0.2%-0.4% 对比减少的产量车站。在 1981-2009 期间,米饭变化更新被热要求的增加描绘,谷物数字每尖铁和收获索引。新变化比旧的对气候变化不太敏感。高热的要求,高收益潜力和热的发展和农学的管理的改进,容忍的米饭变化应该被鼓励在未来遇见气候变化和增加的食物需求的挑战。He ZHANG Fulu TAO Dengpan XIAO Wenjiao SHI Fengshan LIU Shuai ZHANG Yujie LIU Meng WANG Huizi BAI 2016Frontiers of Earth Science2016,10,2:5
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