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Effect of Pb, Hg and Cd in soil on scavenging system of activated oxygen in tobacco leaves

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Chinese Science Bulletin 1999年第S2期44卷 91-93页

作者： YAN Chongling~(1,2., HONG Yetang~1, WANG Shijie~1, LIN Peng~3, YANG Xianke~2. 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., guiyang 550002. china 3. Department of Biology, Xiamen University, Xiamen 361005, china State Key Laboratory of environmental Geochemistry Chinese Academy of Sciences Guiyang 550002 China guizhou institute of {2. protection Guiyang 550002 China Department of Biology Xiamen University Xiamen 361005 China

Pb, Hg and Cd will affect human health by vegetative chain. In recent years, people more and more are concerned about heavy metal pollution of the soil-plant system. Many researchers studied the effect of single heavy metal on growth, photosynthesis, respiration and quality of plants, but few systematicstudies of the effect of heavy metals on the scavenging system of activated oxygen of plants. This note systematically studies the effect of Pb, Hg and Cd in soil on the scavenging system of activated oxygen in tobacco leaves. 1 Material and methods Material: Tobacco (Nicoticana tabacum L). Methods: Cultivating and measuring methods were according to reference. 2.Results Results of this study indicate that the common effect of Pb, Hg and Cd on activity of CAT is obvi-

关键词： Pb Hg and Cd scavenging system of activated oxygen tobacco.

Status of mercury pollution during resources development in guizhou Province, china

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Journal of environmental Sciences 2000年第S1期12卷 12-18页

作者： QU Li\|ya, HOU Hun\|yuan, XUE You\|mei (guizhou institute of {2. Sciences, guiyang 550002.china)

Taking coal burning, mining and smelting in mercury mine as examples, this paper gives details on the environmental status in a typical mercury polluted area: (1) effects of mercury from mining and smelting on the environment in the mercury richest area in our country; (2. constitution of coal burning to mercury in the environment in areas where coal plays a leading role in energy structure.

关键词： resource development mercury pollution

Major ingestion pathways of arsenic in endemic arsenosis areas in guizhou Province, china

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Chinese Science Bulletin 1999年第S2期44卷 69-70页

作者： ZHENG Baoshan~1, DING Zhenhua~1, ZHU Jianming~1, ZHOU Daixing~2.and ZHOU Yunshu~2.1. State Key Laboratory of environmental Geochemistry, institute of Geochemistry, {2., guizhou 550002. china 2. Sanitation and Anti-epidemic Station of Qianxinan Autonomous Prefecture, Xingyi, guizhou 562.00, china State Key Laboratory of environmental Geochemistry Institute of Geochemistry Guiyang Guizhou 550002 China Sanitation and Anti-epidemic Station of Qianxinan Autonomous Prefecture Xingyi Guizhou 562400 China

ARSENIC-poisoning occurring in agricultural areas in southwestern guizhou Province, china, has been aproblem for half a century. By 1998, over 3000 cases of arsenic poisoning had been identified and morethan 100 000 people from 6 counties were under threat. In 1992.1993, samples of coal, rocks,soil, surface water, ground water, air and food such as chili peppers were collected in endemic and control areas. Samples of urine, blood and hair were also collected from arsenic-poisoned patients as well ashealthy population in a control area. Arsenic content of the samples was determined by Ag-DCCmethod.

关键词： arsenic coal arsenosis ingestion pathways.

ON THE ATMOSPHERIC GRAVITY WAVES DURING THE 2.RD SEPTEMBER 1987 ANNULAR SOLAR ECLIPSE

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Chinese Journal of Acoustics 1989年第4期8卷 335-340页

作者： XIE Jinlai, YANG Xunren(institute of Acoustics, Academia Sinica)LI Qitai(institute of {2. protection of guizhou Province) Acad Sinica

During solar eclipse, the lunar shadow moves through the earth's atmosphere with supersonic speed. Chimonas and Hines deemed that the shock waves produced by cooling of atmosphere would induce gravity waves, and both TIDs and atmospheric pressure changes can be detected in the ionosphere and on the ground respectively. Although the IGW signals from solar eclipse are usually quite weak, they can still be detected .The pressure changes on ground level occur near the region of eclipse, but can be detected even far beyond the path of eclipse. This article is the first one to report results of detecting pressure waves caused by solar eclipse in china.Druing the 2.rd September 1987 annular solar eclipse, IGWs have been detected and recorded at infrasound observatories in Urumqi, Taiyuan, Xuzhou and Suzhou, which are situated within the path of annular eclipse, as well as in Beijing and guiyang, which are situated on the opposite sides of this path. The signals are detected by microbarometers of condenser microphone type. After analysing the waveforms of the recorded signals numerically, the wave periods and wave amplitudes are determined to be within the ranges from 10 to 60 min and from 7 to 2. Pa (peak to peak ) respectively. The results from dynamical spectral analyses show that the spectral distribution of all the gravity wave periods from various observatories is continuous and possesses a common main period of 40 min. Moreover, there are waves with even longer periods in different observatories and their appearance times are quite different.

关键词： Nature ON THE ATMOSPHERIC GRAVITY WAVES DURING THE 2.RD SEPTEMBER 1987 ANNULAR SOLAR ECLIPSE RD

Stable carbon isotopic composition of soil organic carbon in karst area in Central guizhou, china

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Chinese Science Bulletin 1999年第S2期44卷 87-88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. State 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 Laboratory of environmental Geochemistry Institute of Geochemistry Chinese Academy of Sciences Guiyang 550002 China

THE stable carbon isotopic composition of soil organic carbon is a powerful tool for discussing the source ofsoil CO2.and the relationship of CO2.source and sink between soil CO2.and atmosphere CO2.and has beenwidely ... 详细信息

THE stable carbon isotopic composition of soil organic carbon is a powerful tool for discussing the source ofsoil CO2./sub> and the relationship of CO2./sub> source and sink between soil CO2./sub> and atmosphere CO2./sub> and has beenwidely studied. However, few similar researches have been done in karst area which comprises 15%global terrestrial area. Preliminary research results about the stable carbon isotopic composition of soil organic carbon in karst area are reported here. In April and August 1998, the samples were collected continuously at 5-cm intervals from 0 to -45cm depth in meadow soil profile described by Zheng and located in the Hongfong Lake area in the central guizhou Plateau which lies in the central East-Asia karst area. CO2./sub> for δ13 C analysis was prepared

关键词： δ13C of soil organic carbon karst area guizhou Province.

The seasonal and daily CO_2.concentration variance in karst meadow soil profile with depth in Central guizhou, china

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Chinese Science Bulletin 1999年第S2期44卷 93-94页

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.

The hydrogeochemistry of the Wujiang River drainage system in guizhou, china (Ⅱ)——Variations in concentrations of dissolved trace elements in karst river water and their controlling factors

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Chinese Science Bulletin 1999年第S2期44卷 112-115页

作者： LIU Congqiang and HAN Guilin State Key Laboratory of environmental Geochemistry, institute of Geochemistry, Chinese Academy of Sciences,{2. State Key Laboratory of environmental Geochemistry Institute of Geochemistry Chinese Academy of Sciences Guiyang 550002 China

GEOCHEMICAL studies of trace elements, especially heavy metal elements in river water will provide thegrounds for the assessment of the influence of human activities on the environment. At present, the stud- ies of water bodies in karst areas are focussed on the analysis of chemical compositions of surface and underground water samples, and almost no systematic study has been done on trace elements. So theauthors have carried out systematic studies on the distribution of concentrations of the dissolved trace elements and their controlling factors, while some systematic studies are under way on the major compositionsof river water in the Wujiang drainage system in guizhou Province. On the basis of the characteristics ofthe U-Ca-Sr system in river water and their geochemical indicating implications (Refer to the paper entitled "The hydrogeochemistry of the Wujiang River drainage system in guizhou, {2.: I. The U-Ca-Srsystem in karst river water"), the paper is concerned mainly with the trace element composition of

关键词： dissolved trace elements karst Wujiang River drainage system guizhou china.

Guanling Biota: A Rare Biota in Sea Early Late Triassic

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Journal of china University of Geosciences 2002年第3期13卷 215-216页

作者： Wang Shangyan The State Key Laboratory of environmental Geochemistry, institute of Geochemistry, Chinese Academy of Sciences, {2. 550002.guizhou Geological Survey, {2., 550004 Wang Yangeng Wang Liting Yin Gongzheng guizhou Geological Survey, {2. 550004 The State Key Laboratory of environmental Geochemistry Institute of Geochemistry Chinese Academy of Sciences Guiyang 550002 guizhou Geological Survey Guiyang550004 guizhou Geological Survey Guiyang550004

Guanling biota has been found at the bottom of Wayao Formation of UpperTriassic (Carn-ic stage) near Xinpu town, Guanling County, guizhou Province, china. There are a lotof crinoids and marine reptiles, which is a characteristic of Guanling biota, including ammonites,bivalve, brachiopod, fish, conodont and plant. These fossils are featured not only with the largequantity, but also with their extraordinary perfect forms. This paper explores the meaning,geological background, present situation of study and scientific significance of Guanling biota.

关键词： guanling biota triassic guizhou

Relationship of soil surface CO_2.flux with microbial biomass carbon in the karst areas of Southwest china

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Chinese Science Bulletin 1999年第S2期44卷 122-123页

作者： PIAO Hechun, HONG Yetang and YUAN Zhiyun State Key Laboratory of environmental Geochemistry, institute of Geochemistry, Chinese Academy of Sciences,{2. State Key Laboratory of environmental Geochemistry Institute of Geochemistry Chinese Academy of Sciences Guiyang 550002 China

THE production of C02.in the soil results from the oxidation of soil organic matter by heterotrophic microorganisms and by the respiration of plant roots. The release of C02.from the soil is a major flux in theglobal ... 详细信息

THE production of C02./sub> in the soil results from the oxidation of soil organic matter by heterotrophic microorganisms and by the respiration of plant roots. The release of C02./sub> from the soil is a major flux in theglobal carbon cycle, which is largely fuelled by plant production. In this note, we investigated the release of C02./sub>from soils of the karst region. We measured the amount of soil microbial biomass carbon,soluble organic carbon in the soil, and the flux of C02./sub> from the soil surface over a 1-year period. Thisnote is to examine the factors affecting the flux of C02./sub> from the soil surface in an ecosystem with nutrientpoor soils and limited amounts of soil microbial biomass. This study was conducted from June 1997 through May 1998 on a hill side, located in the suburbs ofguiyang City in guizhou Province of {2. （latitude 2.°30’N, longitude 106°39’E）. Situated 1

关键词： soil carbon dioxide karst areas.