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| 1 | The interdecadal trend and shift of dry/wet over the central part of North China and their relationship to the Pacific Decadal Oscillation (PDO)显示文摘Based on monthly precipitation and monthly mean surface air temperature (SAT),the dry/wet trends and shift of the central part of North China and their relationship to the Pacific Decadal Oscillation (PDO) from 1951 to 2005 have been analyzed through calculating surface wetness index (SWI). The results indicate that there was a prominent drying trend and an abrupt change in the analysis period. A per-sistent warming period with less precipitation from the mid and late 1970s to present was found,and a shift process exists from the wet to the dry in the central part of North China during 1951-2005. The transition is located in the mid to late 1970s,which should be related to the shift variation of large-scale climate background. The correlation analysis has brought about a finding of significant correlativity between PDO index (PDOI) and SAT,precipitation and SWI in this region. The correlation exhibits that the positive phase of PDOI (warm PDO phase) matches warming,less precipitation and the drought period,and the negative PDOI phase corresponds to low SAT,more precipitation and the wet period. The duration of various phases is more than 25 years. The decadal variation of sea surface temperature (SST) in the North Pacific Ocean is one of the possible causes in forming the decadal dry/wet trend and shift of the central part of North China. | MA ZhuGuo | 2007 | Chinese Science Bulletin2007，52，15： | 42 |
| 2 | Simulation of historical and projected climate change in arid and semiarid areas by CMIP5 models显示文摘Based on Climatic Research Unit Time Series3.1 temperature and Global Precipitation Climatology Center full data reanalysis version 6 precipitation data,the abilities of climate models from the fifth phase of the Coupled Model Intercomparison Project to simulate climate changes over arid and semiarid areas were assessed.Simulations of future climate changes under different representative concentration pathways(RCPs)were also examined.The key findings were that most of the models are able to capture the dominant features of the spatiotemporal changes in temperature,especially the geographic distribution,during the past 60 years,both globally as well as over arid and semiarid areas.In addition,the models can reproduce the observed warming trends,but with magnitudes generally less than the observations of around0.1–0.3°C/50a.Compared to temperature,the models perform worse in simulating the annual evolution of observed precipitation,underestimating both the variability and tendency,and there is a huge spread among the models in terms of their simulated precipitation results.The multimodel ensemble mean is overall superior to any individual model in reproducing the observed climate changes.In terms of future climate change,an ongoing warming projected by the multi-model ensemble over arid and semiarid areas can clearly be seen under different RCPs,especially under the high emissions scenario(RCP8.5),which is twice that of the moderate scenario(RCP4.5).Unlike the increasing temperature,precipitation changes vary across areas and are more significant under high-emission RCPs,with more precipitation over wet areas but less precipitation over dry areas.In particular,northern China is projected to be one of the typical areas experiencing significantly increased temperature and precipitation in the future. | Tianbao Zhao Liang Chen Zhuguo Ma | 2014 | Chinese Science Bulletin2014，59，4： | 23 |
| 3 | Regional applicability of seven meteorological drought indices in China显示文摘The definition of a drought index is the foundation of drought research.However,because of the complexity of drought,there is no a unified drought index appropriate for different drought types and objects at the same time.Therefore,it is crucial to determine the regional applicability of various drought indices.Using terrestrial water storage obtained from the Gravity Recovery And Climate Experiment,and the observed soil moisture and streamflow in China,we evaluated the regional applicability of seven meteorological drought indices:the Palmer Drought Severity Index(PDSI),modified PDSI(PDSI_CN) based on observations in China,self-calibrating PDSI(scPDSI),Surface Wetness Index(SWI),Standardized Precipitation Index(SPI),Standardized Precipitation Evapotranspiration Index(SPEI),and soil moisture simulations conducted using the community land model driven by observed atmospheric forcing(CLM3.5/ObsFC).The results showed that the scPDSI is most appropriate for China.However,it should be noted that the scPDSI reduces the value range slightly compared with the PDSI and PDSI_CN;thus,the classification of dry and wet conditions should be adjusted accordingly.Some problems might exist when using the PDSI and PDSI_CN in humid and arid areas because of the unsuitability of empiricalparameters.The SPI and SPEI are more appropriate for humid areas than arid and semiarid areas.This is because contributions of temperature variation to drought are neglected in the SPI,but overestimated in the SPEI,when potential evapotranspiration is estimated by the Thornthwaite method in these areas.Consequently,the SPI and SPEI tend to induce wetter and drier results,respectively.The CLM3.5/ObsFC is suitable for China before 2000,but not for arid and semiarid areas after 2000.Consistent with other drought indices,the SWI shows similar interannual and decadal change characteristics in detecting annual dry/wet variations.Although the long-term trends of drought areas in China detected by these seven drought indices during 1961-2013 are consistent,obvious differences exist among the values of drought areas,which might be attributable to the definitions of the drought indices in addition to climatic change. | YANG Qing LI MingXing ZHENG ZiYan MA ZhuGuo | 2017 | Science China Earth Sciences2017，60，4： | 21 |
| 4 | Global aridification in the second half of the 20th century and its relationship to large-scale climate background显示文摘The variation in surface wetness index (SWI), which was derived from global gridded monthly precipi- tation and monthly mean surface air temperature datasets of Climatic Research Unit (CRU), from 1951― 2002 over global land was analyzed in this paper. The characteristics of the SWI variation in global continents, such as North America, South America, Eurasia, Africa, and Australia, were compared. In addition, the correlation between the SWI variation of each continent (or across the globe) and the large-scale background closely related to SST variations, which affects climate change, was analyzed. The results indicate that the SWI variation shows distinct regional characteristics in the second half of the 20th century under global warming. A drying trend in the last 52 years occurred in Africa, Eurasia, Australia and South America, most obviously in Africa and Eurasia. North America shows a wetting trend after 1976. A 30-year period of dry-wet oscillation is found in South America and Australia; the latest is in a drying period in two regions. The results also revealed that global warming has changed the dry-wet pattern of the global land. South America and Australia have a drying trend despite in- creases in precipitation. This indicates that increases in surface air temperature cannot be ignored in aridification studies. Global dry-wet variation is closely related to large-scale SST variations: the drying trend in Africa and Eurasia and the wetting trend in North America are correlated with Pacific Decadal Oscillation (PDO); the interdecadal oscillation of SWI in South America and Australia is consistent with the interdecadal variation in Southern Oscillation Index (SOI). | MA ZhuGuo FU CongBin | 2007 | Science China Earth Sciences2007，50，5： | 17 |
| 5 | Modeling spatial and temporal variations in soil moisture in China显示文摘On the basis of station observations,an atmospheric field (ObsFC) was constructed for the Community Land Model version 3.5 (CLM3.5).The model (CLM3.5 driven with ObsFC,hereafter referred as to CLM3.5/ObsFC) was used to simulate soil moisture (SM) from 1951 to 2008 in China.The resulting SM was compared with in situ observations,remote-sensing data and estimations made by various land models,indicating that CLM3.5/ObsFC is capable of reproducing the temporospatial characteristics and long-term variation trends of SM over China.Using an in situ observation-based forcing field improves the simulation of SM.Analysis of SM simulated using CLM3.5/ObsFC shows that the overall spatial pattern of SM was characterized by a gradually decreasing and alternating distribution of arid-humid zones from the southeast to northwest.Regionally averaged SM was the driest over southern Xinjiang Province and western Inner Mongolia,while the most humid regions were located over the Northeast Plain,Jianghuai region and the Yangtze River basin.The long-term variation trends of SM were generally characterized by increases in arid and humid regions and decreases in semiarid regions.Moreover,the variation was relatively intense from the mid-1970s to the mid-1990s in the arid region.The time series was more stable in the humid region except for a period near 1970 and after the year 2003.A downward trend was most prominent in the semiarid region from the 1990s to the end of the time series.For 1951-2008,in the arid,semiarid and humid regions,the SM volume percentage changed by 2.35,-1.26 and 0.08,respectively.The variation trends and intensity remarkably differed among the different regions,with the most notable changes being over the arid and semiarid regions north of 35°N. | LI MingXing MA ZhuGuo NIU Guo-Yue | 2011 | Chinese Science Bulletin2011，56，17： | 17 |
| 6 | An Analysis of Historical and Future Temperature Fluctuations over China Based on CMIP5 Simulations显示文摘The trends and fluctuations of observed and CMIP5-simulated yearly mean surface air temperature over China were analyzed. In general, the historical simulations replicate the observed increase of temperature, but the multi-model ensemble(MME) mean does not accurately reproduce the drastic interannual fluctuations. The correlation coefficient of the MME mean with the observations over all runs and all models was 0.77, which was larger than the largest value(0.65) from any single model ensemble. The results showed that winter temperatures are increasing at a higher rate than summer temperatures, and that winter temperatures exhibit stronger interannual variations. It was also found that the models underestimate the differences between winter and summer rates. The ensemble empirical mode decomposition technique was used to obtain six intrinsic mode functions(IMFs) for the modeled temperature and observations. The periods of the first two IMFs of the MME mean were 3.2 and 7.2, which represented the cycle of 2–7-yr oscillations. The periods of the third and fourth IMFs were 14.7 and 35.2, which reflected a multi-decadal oscillation of climate change. The corresponding periods of the first four IMFs were 2.69, 7.24, 16.15 and 52.5 in the observed data. The models overestimate the period of low frequency oscillation of temperature, but underestimate the period of high frequency variation. The warming rates from different representative concentration pathways(RCPs) were calculated, and the results showed that the temperature will increase by approximately 0.9℃, 2.4℃, 3.2℃ and 6.1℃ in the next century under the RCP2.6, RCP4.5, RCP6.0 and RCP8.5 scenarios, respectively. | LIU Yonghe FENG Jinming MA Zhuguo | 2014 | Advances in Atmospheric Sciences2014，31，2： | 15 |
| 7 | Soil moisture drought detection and multi-temporal variability across China显示文摘Soil moisture droughts can trigger abnormal changes of material and energy cycles in the soil-vegetation-atmosphere system,leading to important effects on local ecosystem,weather,and climate.Drought detection and understanding benefit disaster alleviation,as well as weather and climate predictions based on the understanding the land-atmosphere interactions.We thus simulated soil moisture using land surface model CLM3.5 driven with observed climate in China,and corrected wet bias in soil moisture simulations via introducing soil porosity parameter into soil water parameterization scheme.Then we defined soil moisture drought to quantify spatiotemporal variability of droughts.Over the period from 1951 to 2008,40%of months(to the sum of 12×58)underwent droughts,with the average area of 54.6%of total land area of China's Mainland.The annual monthly drought numbers presented a significant decrease in arid regions,but a significant increase in semi-arid and semi-humid regions,a decrease in humid regions but not significant.The Mainland as a whole experienced an increasing drought trend,with77.3%of areal ratio of decrease to increase.The monthly droughts in winter were the strongest but the weakest in summer,impacting 54.3%and 8.4%total area of the Mainland,respectively.The drought lasting three months or more occurred mainly in the semi-arid and semi-humid regions,with probability>51.7%,even>77.6%,whereas those lasting 6 and 12 months or more impacted mainly across arid and semi-arid regions. | LI MingXing MA ZhuGuo | 2015 | Science China Earth Sciences2015，58，10： | 13 |
| 8 | Water-vapor source shift of Xinjiang region during the recent twenty years显示文摘这篇论文的目的是在过去的 20 年期间调查 Xinjiang 区域和他们的移动的气候水蒸汽来源。首先,原则和步粗略地被调整寻求水蒸汽来源。第二,在对流层的静止水蒸汽运输是打算的区分水蒸汽旁边来哪里从的气候 ERA-40 分析。另外,在运输之间的搭配和大气的列水蒸汽内容被分析。结果证明主要蒸汽来自 Xinjiang 的西方方面为季节中间月,除了 7 月当水蒸汽来自北方或西北方向时。水蒸汽来源是不同的不同季节,例如里海和地中海是来源在在 10 月的在 7 月的 1 月和 4 月,北方大西洋和北极海和黑海和里海分别地。在里面最近在 Xinjiang 上面的更多的水蒸汽与全球温暖来自高纬度和北极海的十年,和从与 1973-1986 的案例比较的地中海的更少。事实上,在画热带上的空气变得干燥,异常的水蒸汽运输方向在 1987-2000 期间转到西方或西南。由对比,在中间、高的纬度上的空气以前比 14 年更温暖、湿。 | Dai Xingang Li Weijing Ma Zhuguo Wang Ping | 2007 | Progress in Natural Science:Materials International2007，17，5： | 12 |
| 9 | Causes and Changes of Drought in China:Research Progress and Prospects显示文摘Drought is one of the most serious and extensive natural hazards in the world.Subject to monsoon climate variability,China is particularly influenced by drought hazards,especially meteorological drought.Based on a comprehensive understanding of the current status of international drought research,this paper systematically reviews the history and achievements of drought research in China since the founding of the People’s Republic of China,from four main perspectives:characteristics and spatiotemporal distribution of historical and recent drought events,drought formation mechanism and change trend,drought hazard risk,and the particular flash drought.The progress and problems of drought research in China are analyzed and future prospects are proposed,with emphasis on the multi-factor synergetic effect for drought formation;the effect of land-atmosphere interaction;identification,monitoring,and prediction of flash drought;categorization of drought and characteristics among various types of drought;the agricultural drought development;drought response to climate warming;and assessment of drought hazard risks.It is suggested that strengthening scientific experimental research on drought in China is imperative.The present review is conducive to strategic planning of drought research and application,and may facilitate further development of drought research in China. | Qiang ZHANG Yubi YAO Yaohui LI Jianping HUANG Zhuguo MA Zhilan WANG Suping WANG Ying WANG Yu ZHANG | 2020 | Journal of Meteorological Research2020，34，3： | 8 |
| 10 | Soil moisture-based study of the variability of dry-wet climate and climate zones in China显示文摘An ensemble soil moisture dataset was produced from 11 of 25 global climate model (GCM) simulations for two climate scenarios spanning 1900 to 2099; this dataset was based on an evaluation of the spatial correlation of means and trends in reference to soil moisture simulations conducted using the community land model driven by observed atmospheric forcing. Using the ensemble soil moisture index, we analyzed the dry-wet climate variability and the dynamics of the climate zone boundaries in China over this 199-year period. The results showed that soil moisture increased in the typically arid regions, but with insignificant trends in the humid regions; furthermore, the soil moisture exhibited strong oscillations with significant drought trends in the transition zones between arid and humid regions. The dynamics of climate zone boundaries indicated that the expansion of semiarid regions and the contraction of semi-humid regions are typical characteristics of the dry-wet climate variability for two scenarios in China. During the 20th century, the total area of semiarid regions expanded by 11.5% north of 30°N in China, compared to the average area for 1970-1999, but that of semi-humid regions decreased by approximately 9.8% in comparison to the average for the period of 1970-1999, even though the transfer area of the humid to the semi-humid regions was taken into account. For the 21st century, the dynamics exhibit similar trends of climate boundaries, but with greater intensity. | LI MingXing MA ZhuGuo | 2013 | Chinese Science Bulletin2013，58，4： | 8 |
| 11 | Assessment of an Evapotranspiration Deficit Drought Index in Relation to Impacts on Ecosystems显示文摘Ecosystems have increasingly been subject to the challenge of heavy drought under global warming. To quantitatively evaluate the impacts of drought on ecosystems, it is necessary to develop a drought index that can sensitively depict the response of vegetation to drought evolution at a biological time scale. For the ability of direct connection between climate and ecosystem by deficit of evapotranspiration, in the present study, a drought index was defined based on standardized evapotranspiration deficit (SEDI), according to the difference between actual and potential evapotranspiration, to meet the need for highlighting drought impacts on ecological processes. Comparisons with traditional indices show that SEDI can reasonably detect droughts and climatic dry and wet transitions, especially at a monthly time scale, and can also regenerate long-term trends. Moreover, SEDI can more sensitively capture the biological changes of ecosystems in response to the dynamics of drought intensity, compared with the indices of precipitation and temperature. SEDI is more practical than the precipitation and temperature indices to highlight signals of biological effects in climate droughts. Hence, it has potential for use in assessments of climate change and its impact on ecosystems. | Xia ZHANG Mingxing LI Zhuguo MA Qing YANG Meixia LV Robin Clark | 2019 | Advances in Atmospheric Sciences2019，36，11： | 6 |
| 12 | Characteristics and Preliminary Causes of Tropical Cyclone Extreme Rainfall Events over Hainan Island显示文摘The characteristics of tropical cyclone(TC) extreme rainfall events over Hainan Island from 1969 to 2014 are analyzed from the viewpoint of the TC maximum daily rainfall(TMDR) using daily station precipitation data from the Meteorological Information Center of the China Meteorological Administration, TC best-track data from the Shanghai Typhoon Institute,and NCEP/NCAR reanalysis data. The frequencies of the TMDR reaching 50, 100 and 250 mm show a decreasing trend[-0.7(10 yr)^(-1)], a weak decreasing trend [-0.2(10 yr)^(-1)] and a weak increasing trend [0.1(10 yr)^(-1)], respectively. For seasonal variations, the TMDR of all intensity grades mainly occurs from July to October, with the frequencies of TMDR 50 mm and 100 mm peaking in September and the frequency of TMDR 250 mm [TC extreme rainstorm(TCER) events]peaking in August and September. The western region(Changjiang) of the Island is always the rainfall center, independent of the intensity or frequencies of different intensity grades. The causes of TCERs are also explored and the results show that topography plays a key role in the characteristics of the rainfall events. TCERs are easily induced on the windward slopes of Wuzhi Mountain, with the coordination of TC tracks and TC wind structure. A slower speed of movement, a stronger TC intensity and a farther westward track are all conducive to extreme rainfall events. A weaker northwestern Pacific subtropical high is likely to make the 500-h Pa steering flow weaker and results in slower TC movement, whereas a stronger South China Sea summer monsoon can carry a higher moisture flux. These two environmental factors are both favorable for TCERs. | Xianling JIANG Fumin REN Yunjie LI Wenyu QIU Zhuguo MA Qinbo CAI | 2018 | Advances in Atmospheric Sciences2018，35，5： | 6 |
| 13 | Sensitivity of Potential Evapotranspiration Estimation to the Thornthwaite and Penman–Monteith Methods in the Study of Global Drylands显示文摘Drylands are among those regions most sensitive to climate and environmental changes and human-induced perturbations.The most widely accepted definition of the term dryland is a ratio,called the Surface Wetness Index(SWI),of annual precipitation to potential evapotranspiration(PET)being below 0.65.PET is commonly estimated using the Thornthwaite(PET Th)and Penman–Monteith equations(PET PM).The present study compared spatiotemporal characteristics of global drylands based on the SWI with PET Th and PET PM.Results showed vast differences between PET Th and PET PM;however,the SWI derived from the two kinds of PET showed broadly similar characteristics in the interdecadal variability of global and continental drylands,except in North America,with high correlation coefficients ranging from 0.58 to 0.89.It was found that,during 1901–2014,global hyper-arid and semi-arid regions expanded,arid and dry sub-humid regions contracted,and drylands underwent interdecadal fluctuation.This was because precipitation variations made major contributions,whereas PET changes contributed to a much lesser degree.However,distinct differences in the interdecadal variability of semi-arid and dry sub-humid regions were found.This indicated that the influence of PET changes was comparable to that of precipitation variations in the global dry–wet transition zone.Additionally,the contribution of PET changes to the variations in global and continental drylands gradually enhanced with global warming,and the Thornthwaite method was found to be increasingly less applicable under climate change. | Qing YANG Zhuguo MA Ziyan ZHENG Yawen DUAN | 2017 | Advances in Atmospheric Sciences2017，34，12： | 6 |
| 14 | Impact of oceans on climate change in drylands显示文摘Drylands account for approximately 41% of the global total land area. Significant warming and rare precipitation in drylands result in a fragile ecology and deterioration of the living environment, making it more sensitive to global climate change. As an important regulator of the Earth's climate system, the oceans play a vital role in the process of climate change in drylands. In modern climate change in particular, the impact of marine activities on climate change in drylands cannot be neglected. This paper reviews the characteristics of climate change in drylands over the past 100 years, and summarizes the researches conducted on the impact of marine activities on these changes. The review focuses on the impact of the Pacific Decadal Oscillation(PDO), Atlantic Multidecadal Oscillation(AMO), El Ni?o and La Ni?a on climate change in drylands, and introduces the mechanisms by which different oceanic oscillation factors synergistically affect climate change in drylands.Studies have shown that global drylands have experienced a significant intensification in warming in the past 100 years, which shows obvious characteristics of interdecadal dry/wet variations. The characteristics of these changes are closely related to the oscillatory factors of the oceanic interdecadal scale. Different phase combinations of oceanic oscillation factors significantly change the land-sea thermal contrast, which in turn affects the westerly jet, planetary wave and blocking frequency, resulting in changes in the temperature and dry/wet characteristics of drylands. With the intensification of climate change in drylands, the impact of marine activities on these regions will reveal new characteristics in the future, which will increase the uncertainty of future climate change in drylands and intensify the impact of these drylands on global climate. | Xiaodan GUAN Jieru MA Jianping HUANG Ruixin HUANG Lei ZHANG Zhuguo MA | 2019 | Science China Earth Sciences2019，62，6： | 5 |
| 15 | A novel 4/6-type alpha-conotoxin VilA selectively inhibits nAchR α3β2 subtype显示文摘 | Liang Li Na Liu Rong Ding Shuo Wang Zhuguo Liu Haiying Li Xing Zheng Oiuyun Dai | 2015 | Acta Biochimica et Biophysica Sinica2015，47，12： | 4 |
| 16 | cDNA cloning of conotoxins with framework XII from several Conus species显示文摘在我们为用信号肽顺序克隆新奇 I2 总科 conotoxins 的努力,我们从 Conus litteratus 识别了新奇 conotoxin Lt12.4。这基因有框架 XII (从半胱氨酸模式 I2 总科 conotoxin 不同的 -C-C-C-C-CC-C-C-),(-C-C-CC-CC-C-C-) 。随后,我们由 5 赛跑发现了 Lt12.4 的信号肽顺序。用这个新序列,我们从四 Conus 种与这个半胱氨酸模式识别了另一五新奇 conotoxins (Conus eburneus, Conus imperialis, Conus marmoreus,和 C。litteratus ) 。这些新奇 conotoxins 作为报导 Gla-TxX 和 Gla-MII 有一样的半胱氨酸模式,并且可以包含 Gla 残余。而且,他们有成熟的肽定序的高度保存的信号肽和 hypervariable,并且广泛地在 Conus 种类存在。因此,它能被定义为 E-conotoxins 的一个新总科。 | Zhuguo Liu Zheng Yu Na Liu Chongjia Zhao Jie Hu Qiuyun Dai | 2010 | Acta Biochimica et Biophysica Sinica2010，42，9： | 4 |
| 17 | Has the stilling of the surface wind speed ended in China?显示文摘Since the 1960 s,the global land surface wind speed(SWS)has significantly weakened,a phenomenon known as global terrestrial stilling.The latest research found that the stilling reversed around 2010,and since then the global SWS has been strengthening.However,there is still a lack of systematic quantitative analysis in China.We analyzed the transition and regional differences in the long-term trends of the SWS in China based on observational SWS data from 1971 to 2019.The results showed that annual mean SWS in China underwent a reversal from a continuously weakening trend to a significantly strengthening trend around 2014 and implying that stilling may have ended in 2014.The reversal had obvious regional and seasonal variations.In Northeast China,Western Xinjiang as well as on the Tibetan Plateau,the years with both annual and seasonal mean SWS changing from weakening to strengthening were around 2013/2014,1993/1994,and 2000.However,in the west of North China,SWS showed an obviously strengthening trend only in autumn and winter after 2007;while only autumn mean SWS showed a strengthening trend after 2012 in South China.It should be noted that stilling is ongoing in the eastern and southern coastal areas,North China and Eastern Xinjiang. | Qing YANG Mingxing LI Ziqing ZU Zhuguo MA | 2021 | Science China Earth Sciences2021，64，7： | 4 |
| 18 | “Giant pressure shadow” structure and ore-finding method of tectonic stress field in the Tongchang Cu-Au polymetallic orefield,Shaanxi,China:Ⅱ.Dynamics of tectonic ore-forming processes and prognosis of concealed ores显示文摘The Tongchang orefield is located in the central part of the Mianxian-Lueyang-Yangpingguan area that is celebrated as a 'gold triangle' area,at the juncture of the latitudinal tectonic zone of South Qinling,the Longmenshan Cathysian tectonic zone and the Sichuan-Yunnan longitudinal tectonic zone,where there are distributed Cu-Au polymetallic ore deposits(occurrences) including the Tongchang,Chenjiaba,Qinjiabian,Hongtushi,Yinshangou and Xiakouyi ore deposits(mineralization).Based on the 'giant pressure shadow' structure put forward and demonstrated by numerical modeling of the tectonic stress field and the static photoelasticity experiments on the basis of tectonic ore-controlling laws in the orefield,tectonic metallogenesis driven by orefield tectonic stress has been discussed in terms of its geological setting,orefield geomechanics,and tectonic stress field.It is thought that the dynamic evolution model of the tectonic stress field controls the whole process of formation of the polymetallic ore deposits(mineralization) in the orefield,as well as the deformation field.As a result,it controls the emplacement of rockbodies and the transformation of ore-source bodies,and provides both the channel-ways for ore-forming fluids and ore-hosting space.Furthermore,it controls the migration potential field of fluids and,thereafter,its flow direction,rate and volume;the tectonic stress field also controls the energy field and hence controls the position of occurrence of ore deposits and their scale.The method of tectonic stress field has been applied to ore prognosis in the orefield.The rules of magmatic emplacement and metallogenic fluid migrating and concentrating under the control of the structural stress field were expounded,hence providing the theoretical basis for the prognosis of concealed ores.In addition,a number of important target areas have been defined. | HAN Runsheng WANG Lei MA Deyun GU Xiaochun FAN Zhuguo | 2010 | Chinese Journal Of Geochemistry2010，29，4： | 4 |
| 19 | Irregular LIPSS produced on metals by single linearly polarized femtosecond laser显示文摘Currently,supra-wavelength periodic surface structures(SWPSS)are only achievable on silica dielectrics and silicon by femtosecond(fs)laser ablation,while triangular and rhombic laser induced periodic surface structures(LIPSS)are achievable by circularly polarized or linear cross-polarized femtosecond laser.This is the first work to demonstrate the possibility of generating SWPSS on Sn and triangular and rhombic LIPSS on W,Mo,Ta,and Nb using a single linearly polarized femtosecond laser.We discovered,for the first time,SWPSS patches with each possessing its own orientation,which are completely independent of the light polarization direction,thus,breaking the traditional rules.Increasing the laser power enlarges SWPSS periods from 4–6μm to 15–25μm.We report a maximal period of 25μm,which is the largest period ever reported for SWPSS,~10 and~4 times the maximal periods(2.4μm/6.5μm)of SWPSS ever achieved by fs and ns laser ablation,respectively.The formation of triangular and rhombic LIPSS does not depend on the laser(power)or processing(scan interval and scan methodology)parameters but strongly depends on the material composition and is unachievable on other metals,such as Sn,Al,Ti,Zn,and Zr.This paper proposes and discusses possible mechanisms for molten droplet generation/spread/solidification,Marangoni convection flow for SWPSS formation,and linear-to-circular polarization transition for triangular and rhombic LIPSS formation.Reflectance and iridescence of as-prepared SWPSS and LIPSS are characterized.It was found that besides insufficient ablation on W,the iridescence density of Ta-,Mo-,Nb-LIPSS follows the sequence of melting temperatures:Ta>Mo>Nb,which indicates that the melting temperature of metals may affect the regularity of LIPSS.This work may inspire significant interest in further enriching the diversity of LIPSS and SWPSS. | Dongshi Zhang Ruijie Liu Zhuguo Li | 2022 | International Journal of Extreme Manufacturing2022，4，1： | 4 |
| 20 | 陆地水循环要素对黄河流域及周边退耕还林的响应(英文)显示文摘退耕还林对水资源的影响复杂且尚存在争议,鉴于此本文基于WRF模式对黄河流域及周边的退耕还林进行了模拟研究,结果表明研究区域的陆地水循环要素对土地利用/覆盖变化较为敏感。在耕地转变为混交林的情况下,黄河流域面平均降水量在2006–2010年间增多223.17 mm,蒸发增加223.88 mm,而产流减少2.22 mm。随着时间增长,植被变化对水资源的影响逐渐增强。对于降水明显偏多和偏少的年份,同一植被变化对水循环要素影响的空间分布不同。 | LV Meixia MA Zhuguo PENG Shaoming | 2019 | Atmospheric and Oceanic Science Letters2019，12，2： | 3 |
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