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chinese science Bulletin 1999年第S2期44卷 93-94页

作者： ZHENG Leping~(1,2., LI Tingyu~2. WAN Guojiang~2. WANG Shijie~2.and OUYANG Ziyuan~2.1. Department of Environmental science and Engineering, Shanghai University, Shanghai 2.0072. china 2. {2. key laboratory of Environmental geochemistry, institute of geochemistry, chinese academy of sciences, guiyang 550002, china Department of Environmental science and Engineering Shanghai University Shanghai 200072 China state key {2. of Environmental geochemistry Institute of Geochemistry Chinese Academy of Sciences Guiyang 550002 China

THE seasonal variance of soil CO2.concentration with depth in soil profile was widely studied. Few similarresearches on this topic have been done in karst area which comprises 15% global terrestrial area. In thisnote,... 详细信息

THE seasonal variance of soil CO2./sub> concentration with depth in soil profile was widely studied. Few similarresearches on this topic have been done in karst area which comprises 15% global terrestrial area. In thisnote, the research results about the seasonal and daily soil CO2./sub> concentration variance in karst area arereported. The soil gases were collected respectively by the sampling device at 2.0, 5,0, -5, -10,-15, -2., -35 and -45 cm from the land surface in meadow soil profile described by Zheng andlocated in the Hongfeng lake area in the central Guizhou Plateau which lies in the central East-Asia karstarea. Sampling time is in the morning, midday and at night in April, August and November, 1998 aswell as in January, 1999, respectively. Concentrations （volume percent） of CO2./sub> in soil gas samples

关键词： soil CO2 concentration karst area Guizhou Province.

Environmental records of lacustrine sediments in different time scales:Sediment grain size as an example

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science china Earth sciences 2004年第10期47卷 954-960页

作者： CHEN Jing’an1, WAN Guojiang1, David Dian Zhang2. ZHANG Feng1 & HUANG Ronggui1 1. state key {2. of Environmental geochemistry, institute of geochemistry, chinese academy of sciences, guiyang 550002, china 2. Department of Geography and Geology, University of Hong Kong, Pokfulam Road, Hong Kong, china state key {2. of Environmental geochemistry Institute of Geochemistry Chinese Academy of Sciences Guiyang China Department of Geography and Geology University of Hong Kong Hong Kong China

Sediment grain size is a conventional proxy of climatic changes. Larger sediment grain size is often interpreted to indicate dry climate during lower lake level while smaller sedi- ment grain size implies wet climate during higher lake level. Through detailed study on sediment grain sizes in Lake Erhai and Lake Chenghai, this paper reveals the different indication signifi- cances of sediment grain sizes in different time scales, different resolution investigations. For long time-scale and low resolution (102. or 103a) studies, larger sediment grain size indicates lower lake level, smaller lake area and drier climate while smaller sediment grain size indicates higher lake level, larger lake area and wetter climate. For short time-scale and high resolution (a or 10a) studies, larger sediment grain size reflects more rainfall and wetter climate while smaller sediment grain size reflects less rainfall and drier climate. Environmental information revealed by lacustrine sediment records is often different in different time scales because of the variance of sedimentation resolution, sampling resolution and dating precision. Therefore, paleoclimate im- plications of environmental proxies in long time-scale and low resolution investigations could not be mechanically applied to short time-scale and high resolution studies. Only after synthetically analyzing the influence manner and extent of all factors on the sediment records in different time scales, can credible conclusions be obtained.

关键词： lacustrine sediment, environmental record, grain size, time scale.

A restudy of Oryctocephalus indicus (Reed,1910)

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Progress in Natural science:Materials International 2006年第11期16卷 1177-1182页

作者： ZHAO Yuanlong~1**, YUAN Jinliang~2. PENG Shanchi~ 2.3 , YANG Xinglian~1, PENG Jin~1, LIN Jihpai~4, and GUO Qingjun~5(1. College of Resource and Environment of Guizhou University, guiyang 550003, china 2. Nanjing {2. of Geology and Palaeontology, chinese academy of sciences, Nanjing 2.0008, china 3. state key laboratory of Papaeobiology and Stratigraphy, Nanjing {2. of Geology and Palaeontology, Nanjing 2.0008, china 4. Department of Geological science, Ohio state University, Columbus, OH 432.0, USA 5. {12., chinese academy of sciences, guiyang 550002, china) College of Resource and Environment of Guizhou University Guiyang 550003 China Nanjing institute of Geology and Palaeontology Chinese Academy of Sciences Nanjing 210008 China state key {2. of Papaeobiology and Stratigraphy Nanjing Institute of Geology and Palaeontology Nanjing 210008 China Department of Geological science Ohio State University Columbus OH 43210 United States institute of geochemistry Chinese Academy of Sciences Guiyang 550002 China

Restudy on morphology of Oryctocephalus indicus (Reed, 1910), based on specimens from Guizhou, china and Nevada USA, suggests that the subspecies regarded previously as Oryctocephalus indicus indicus (Reed, 1910), O. indicus latus Zhao et Yuan 2.02. and O. indicus kobayashi Saito, 1934, are synonymous, and Oryctocephalus americanus Sundberg et McCollum, 2.03 is a similar form of O. indicus. Oryctocephalus indicus is rediagnosed as having a glabella that is subconical in outline and tapering forward slightly; a thorax that comprises 12.segments, and a small pygidium that bears 2.3 axial rings with a terminal piece and a postaxial ridge. Oryctocephalus indicus is widely distributed in eastern Guizhou and ranges through a great interval of Kaili Formation. Its first appearance is almost identical with these events of trilobite extinction-recovery occurring at the end of the Early Cambrian, the alternation of acritach assemblages, the change of trace elements (REE) and stable isotopes (carbon) at the Wuliu-Zengjiaya section. As one of the key forms for defining the traditional Lower-Middle Cambrian boundary (the base of Cambrian Series 3 and Stage 5 in the new Cambrian chronstratigraphic standard), O. indicus has received detailed study and has m{2. advantages than other species such as Ovatoryctocara granulata Tchernysheva, 1962.or Arthricocephalus chauveaui Bergeron, 1899.

关键词： Oryctocephalus indicus restudy Kaili Formation Cambrian Guizhou china.

Characteristics of rare earth elements in soils in Guizhou carbonate region

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chinese science Bulletin 1999年第S2期44卷 115-116页

作者： YAN Chongling~(1,2., HONG Yetang~1, WANG Shijie~1, FU Shunzhen~2. ZHU keyong~2.and WU Shanqi~2.1. state key laboratory of Environmental geochemistry, chinese academy of sciences, guiyang 550002, china 2. Guizhou institute of Environmental Protection, guiyang 550002, china state key {2. of Environmental geochemistry Chinese Academy of Sciences Guiyang 550002 China Guizhou institute of Environmental Protection Guiyang 550002 China

IN recent years, rare earth element (REE) being used in agriculture has gained greater progress and madeus reach some common views. The centent of REE (especially soluble REE) in soils has significantcorrelation with that of REE plant absorbed from soil. Therefore, it is very necessary to clarify contentvariation and background values of REE (especially soluble REE ) from the angles of relation of supplyand demand between soil and plants, for reasonably using REE and formulating relevant health standardin the region, avoiding excessive using REE and taking up soil environmental capacity of REE to result insoil or water-body polluted and sometime for researching rock weathering, soil-forming process and soilclassification in the region. This note deals with characteristics of content and distribution of REE andsoluble REE in soils of Guizhou carbonate region.

关键词： rare earth element soil, Carbonate area, Guizhou.

Effects of short-term low temperatures on photosystem Ⅱ function of samara and leaf of Siberian maple (Acer ginnala) and subsequent recovery

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Journal of Arid Land 2009年第1期1卷 57-63页

作者： XiangLiang PAN1, DaoYong ZHANG1,2. Xi CHEN1, Li LI1, GuiJin MU1, LanHai LI1, AnMing BAO1, Jing LIU2. HuaiSong ZHU1, WenJuan SONG1, JianYing YANG1, JunYong AI1 1 Xinjiang institute of Ecology and Geography, chinese academy of sciences, Urumqi 830011, {2. 2.state key laboratory of Environmental geochemistry, institute of geochemistry, chinese academy of sciences, guiyang 550000, {2. Xinjiang institute of Ecology and Geography Chinese Academy of Sciences Urumqi 830011 China state key {2. of Environmental geochemistry Institute of Geochemistry Chinese Academy of Sciences Guiyang 550000 China

Samara is the reproductive organ (seed) for many tree species in arid land in northwestern china. It is ecologically important in population development due to its dispersal function. However, information on its photosynthesis and effect of environmental stresses on its photosynthesis is still very limited. In the present study, responses of photosystem II (PSII) activity in samara and leaf of Siberian maple to short-term chilling/freezing and subsequent recovery potential were comparatively investigated by using polyphasic fluorescence test. The samara had more efficient photosynthesis (Fv/Fm and PIABS) and more efficient electron transport (φEo) but lower energy dis- sipation (DIo/RC) than leaf. Generally, the PSII performance and the electron transport for both samara and leaf were inhibited under low temperature stress, accompanied by an increase of energy dissipation in PSII reaction centers (RCs). PSII of both samara and leaf was not markedly affected by chilling and could acclimate to chilling stress. Short-term freezing could completely inhibit PSII activity in both samara and leaf, indicated by the drop of values of Fv/Fm, PIABS, φEo to zero. PSII functional parameters of short-term dark frozen samara could be largely recovered whereas those of frozen leaf could not be recovered. The higher tolerance of samara to short-term low temperature stress than leaf is of great ecological significance for seed development, population establishment of Siberian maple.

关键词： samara photosystem Ⅱ JIP-test analysis chlorophyll fluorescence

Continental hydrothermal sedimentary siliceous rock andgenesis of superlarge germanium(Ge)deposit hosted incoal:A study from the Lincang Ge deposit,Yunnan,china

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science china Earth sciences 2004年第11期47卷 973-984页

作者： QI Huawen1,2.HU Ruizhong1,SU Wenchao1,QI Liang1 & FENG Jiayi1 1.key laboratory of {2. Deposit geochemistry,chinese academy of sciences,guiyang 550002,china 2.Department of Earth sciences,Nanjing University,Nanjing 2.0093,china Correspondence should be addressed to Qi Huawen(email: qihuawen@***) key laboratory of {2. Deposit geochemistry Chinese Academy of Sciences Guiyang China Department of Earth sciences Nanjing University Nanjing China

There are abundant hydrothermal sedimentary structures and plant fragment fossils in the siliceous rocks from the Lincang Ge deposit. The major element compositions of these siliceous rocks are characterized by high content SiO2. low TiO2.and Al2.3concentrations, and low Al/(Al+Fe+Mn) ratios (0.010 on average). The siliceous rocks are distinctly enriched in Ge, Sb, As, W, and secondly enriched in Cs, U, Mo and Tl. Their total REE content are generally less than 1μg/g, LREE relatively concentrated, and the values of Eu anomaly and Ce anomaly vary from 0.452.to 5.141 and 0.997 to 1.174, respectively. Their NAS-normalized REE patterns are plain or left-inclined. The Oxygen isotope compositions of these siliceous rocks are similar to those of the hydrothermal siliceous sinter. The above characteristics, as well as the geological setting of the deposit, indicate these siliceous rocks formed in continental hydrothermal envi- ronment. As the interlayer or cliff of the Ge-rich coal seams, siliceous rocks tightly contacted with ore-body, and the contents of Ge in siliceous rocks vary from 5.6 to 360 μg/g (78 μg/g on aver- age). The Ge content increased in coal which close to the siliceous rocks. With the increase of Ge content, the typical trace element ratios (i.e., Ge/Ga, Nb/Ta and U/Th) and REE patterns of Ge-rich coal are more close to those of the siliceous rocks. The Ge concentrated in coal seams of the Lincang Ge deposit might be transported by the hydrothermal water, which demonstrated by the siliceous rocks, during the coal-forming processes.

关键词： siliceous rock, continental hydrothermal sedimentation, superlarge Ge deposit, Lincang.

Variations in CaCO_3 content and Sr isotopic composition of loess and records of paleoclimatic fluctuations

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chinese science Bulletin 1999年第16期44卷 1512-1516页

作者： LIU Congqiang, ZHANG Jing, and LI Chunlaistate key {2. of Environmental geochemistry, institute of geochemistry, chinese academy of sciences ,guiyang 550002, chinaPresent address : Environmental Biology and Chemistry, Faculty of sciences , Toyama University, Toyama 9308555, Japan state key {2. of Environmental geochemistry Institute of Geochemistry Chinese Academy of Sciences Guiyang China

The carbonate Sr isotopic composition of the Heimugou loess-paleosol section in Luochuan of Shaanxi Province shows large variation, with the 87 Sr/86 Sr ratios ranging from 0.7104 to 0.712.. The carbonate in paleosol has in general higher 87Sr/86Sr than the carbonate in loess. In the loess-paleosol section, the Sr isotopic composition vary with an about 100

关键词： loess CaCO3 Sr Isotope paleodimate change.

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超声实验中谱比法衰减的散射与本征吸收特性

地球物理学报 2018年第3期61卷 1083-1094页

作者：周浩符力耘矿产地球化学国家重点实验室中国科学院地球化学研究所贵阳550002 中国科学院大学北京100049 中国石油大学(华东)地球科学与技术学院青岛266580

实际地球介质的弹性波衰减,无论是对于地球内部结构反演、含油气储层描述,还是对于地震岩石物理本身的基础研究而言,都十分重要.通过岩石物理实验测量岩石的弹性波衰减是相关研究的基本手段,而谱比法是一种最常用的测量方法.利用谱比法... 详细信息

实际地球介质的弹性波衰减,无论是对于地球内部结构反演、含油气储层描述,还是对于地震岩石物理本身的基础研究而言,都十分重要.通过岩石物理实验测量岩石的弹性波衰减是相关研究的基本手段,而谱比法是一种最常用的测量方法.利用谱比法测量的弹性波衰减,简称谱比法衰减,由介质的本征吸收特性和非均质散射特性共同决定.然而,在谱比法理论中,没有将这两种衰减特性的作用区分对待.因此,实验室测量的谱比法衰减中是否含有散射特性,其散射特性是否可以忽略,常不明确.本文基于对岩石物理实验中样品波形特征的基本认识,通过能流理论描述了弹性波的本征吸收和非均质散射过程,以及对应的尾波形成机理.文章还应用能流理论测量岩石的弹性波衰减,即能流法衰减.无论是通过理论推导,还是通过实验验证,谱比法衰减与能流法衰减都显示出良好的一致性.这两种直达波衰减的一致性暗示了谱比法衰减中存在着两种衰减特性.文中还对比分析了谱比法衰减与喷射流本征衰减的实验结果,该结果同样展示了谱比法衰减中可能存在着散射特性.因此,通过能流理论,可以利用样品波形的尾波特征定性判断谱比法衰减中可能存在的散射特性.即异常明显的尾波振幅可能意味着强烈的直达波非均质散射,谱比法衰减中的散射特性因而不可忽略.

关键词：谱比法散射衰减本征衰减尾波

Expression pattern of CYC-like genes relating to a dorsalized actinomorphic flower in Tengia(Gesneriaceae)

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Journal of Systematics and Evolution 2010年第5期48卷 309-317页

作者： 1Hong-Bo PANG 2.ing-Wen SUN 2.hun-Zhi HE 1Yin-Zheng WANG 1(state key {2. of Systematic and Evolutionary Botany,institute of Botany,chinese academy of sciences,Beijing 100093,china) 2.guiyang College of Traditional chinese Medicine,guiyang 550002,china) (state key {2. of Systematic and Evolutionary Botany Institute of Botany Chinese Academy of Sciences Beijing 100093 China) (guiyang College of Traditional chinese Medicine Guiyang 550002 China)

Tengia has been called a "natural peloria" in the family Gesneriaceae because it exhibits an almost perfect actinomorphic flower from whorl one to whorl *** would be especially interesting to know whether or how CYC-like gene activities are related to this type of perfect actinomorphic *** address this,we have isolated four CYC-like TCP genes and carried out an investigation on their expression patterns in ***1C and TsCYC1D have similar expression patterns with strong signals being detected in all five petals and stamens,whereas TsCYC2. and TsCYC2. are only transiently expressed in the very early floral *** results suggest that the expansion of the expressions of TsCYC1C and TsCYC1D from the dorsal to the ventral petals is likely responsible for the evolutionary formation of the fully dorsalized actinomorphic corolla,that is,an expanded functional domain of CYC-like gene dorsal identity in Tengia ***,the expressions of TsCYC1C and TsCYC1D are not correlated with stamen abortion;therefore,TsCYC genes do not functionally repress the stamen development in Tengia *** is probably due to changed cis-activities that result in the cell cycle-related genes uncoupling from the TsCYC regulatory pathway in Tengia.

关键词： actinomorphy CYCLOIDEA dorsalized Gesneriaceae RNA in situ hybridization Tengia.

Soil Heavy Metal Pollution Around the Dabaoshan Mine,Guangdong Province,china

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Pedosphere 2007年第5期17卷 588-594页

作者： ZHOU Jian-Min DANG Zhi CAI Mei-Fang LIU Cong-Qiang College of Environmental science and Engineering South China University of Technology Guangzhou 510640 （China） Guangdong key laboratory of Agro-Environment Integrated Control Guangdong Institute of Eco-Environment and Soil Science Guangzhou 510650 （China） state key {2. of Environment geochemistry Institute of Geochemistry Chinese Academy of Sciences Guiyang 550002 （China）

Soil contamination in the vicinity of the Dabaoshan Mine, Guangdong Province, china, was studied through determi- nation of total concentrations and chemical speciation of the toxic metals, Cu, Zn, Cd, and Pb, using inductively coupled plasma mass spectrometry. The results showed that over the past decades, the environmental pollution was caused by a combination of Cu, Zn, Cd, and Pb, with tailings and acid mine drainage being the main pollution sources affecting soils. Significantly higher levels （P ≤ 0.05） of Cu, Zn, Cd, and Pb were found in the tailings as compared with paddy, garden, and control soils, with averages of 1486, 2.16, 6.42. and 42. mg kg^-1, respectively. These metals were continuously dispersed downstream from the tallings and waste waters, and therefore their concentrations in the paddy soils were as high as 567, 1 140, 2.48, and 191 mg kg^-1, respectively, being significantly higher （P ≤ 0.05） as compared with those in the garden soils. The results of sequential extraction of the above metals from all the soil types showed that the residual fraction was the dominant form. However, the amounts of metals that were bound to Fe-Mn oxides and organic matter were relatively higher than those bound to carbonates or those that existed in exchangeable forms. As metals could be transformed from an inert {2. to an active {2., the potential environmental risk due to these metals would increase with time.

关键词： chemical speciation combined pollution index (CPI) contaminated soil heavy metals