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Effects of acid deposition on terrestrial ecosystems and their rehabilitation strategies in china

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Journal of Environmental Sciences 2002年第2期14卷 227-233页

作者： FENG Zong\|wei, MIAO Hong, ZHANG Fu\|zhu, HUANG Yi\|zong (Research Center for Eco\|Environmental Sciences, chinese academy of Sciences, beijing 100085, {3.. E\|mail: FZW@***) Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 Chin

South china has become the third largest region associated with acid deposition following Europe and North America, the area subject to damage by acid deposition increased from 1.75 million km 2 in 1985 to 2.8 million km 2 in 1993. Acid deposition has caused serious damage to ecosystem. Combined pollution of acid rain and SO 2 showed the obvious multiple effects on crops. Vegetable was more sensitive to acid deposition than foodstuff crops. Annual economic loss of crops due to acid deposition damage in eleven provinces of south china was 4.26 billion RMB Yuan. Acid deposition caused serious damage to forest. Annual economic loss of wood volume was about 1.8 billion RMB Yuan and forest ecological benefit loss 16.2 billion in eleven provinces of south china. Acid deposition in south china was typical “sulfuric acid type”. According to the thoughts of sustainable development, some strategies were brought forward as follows: (1) enhancing environmental management, specifying acid\|controlling region, controlling and abating the total emission amount of SO 2; (2) selecting practical energy technologies of clean coal, for example, cleansing and selecting coal, sulfur\|fixed\|type industrial briqutting, abating sulfur from waste gas and so on; (3. developing other energy sources to replace coal, including water electricity, atomic energy and the new energy such as solar energy, wind energy and so on; (4) in acid deposition region of south china, selecting acid\|resistant type of crop and tree to decrease agricultural losses, planting more green fertilizer crops, using organic fertilizers and liming, in order to improve buffer capacities of soil.

关键词： acid rain agriculture forestry economic loss rehabilitation strategies

A new method for constructing total energy conservation algorithms

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Progress in Natural Science:Materials International 2003年第1期13卷 59-62页

作者： ZHAO Ying , JI Zhongzhen, YANG Hongwei and WANG Bin (1. LASG, Institute of Atmospheric Physics, chinese academy of Sciences, beijing 100029, {3. 2. Institute of Science, PLA University of Science and Technology, Nanjing 211101, {3.) chinese Acad Sci Inst Atmospher Phys LASG Beijing 100029 Peoples R China PLA Univ Sci & Technol Inst Sci Nanjing 211101 Peoples R China

Abstract Based on a basic rule for the research on numerical methods which requires that the properties of the original problemshould be preserved as much as possible under discretization, a new method for constructing total energy conservation algorithms is pre-sented. By this method, all kinds of implicit schemes with energy conservation laws including many classical conservation schemes can beconstructed from a kind of special function. Also, the concrete criterion for judging total energy conservation schemes is given. Numericaltests show that these new schemes are effective.

关键词： total energy conservation difference scheme quasi-antisymmetric operator norm-preserving operator.

Analysis of heavy-ion-induced DNA strand breaks in plasmid pUC18

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Analysis of heavy-ion-induced DNA strand breaks in plasmid p...

中国作物学会2007年全国作物遗传育种学术研讨会

作者： GUO Hui-jun~1 LIU Lu-xiang~1 LI Jia-cai~2 ZHAO Kui~3.SUI Li~3.ZHAO Lin-shu~1 ZHAO Shi-rong~1 1.The National key Facility for Crop Gene Resources and Genetic Improvement,institute of Crop Science,chinese academy of Agricultural Sciences,{3. 100081,china 2.Institute of High energy Physics,chinese academy of Sciences,{3. 100093.china 3.Department of Nuclear Physics,china Institute of Atomic energy,{3. 102413.china

Plasmid DNA was irradiated or implanted by mixed particle field(CR)or lithium-ion-beam to detect strand *** primary results showed that mixed particle field could induce single and double strand breaks with positive linear-dose-effects;most of sequence changes induced by CR were point ***-ion-beam could induce strand breaks also,but it was only at dose of 20Gy.

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Applications of stable isotopes to study plant-animal relationships in terrestrial ecosystems

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chinese Science Bulletin 2004年第22期49卷 2339-2347页

作者： WANG Jianzhu1,LIN Guanghui1,2,HUANG Jianhui1 & HAN Xingguo1 1.key laboratory of Quantitative Vegetation Sciences and Research Center for Plant Ecology and Biodiversity Conservation,Institute of Botany,chinese {3. of Sciences,beijing 100093.china 2.Department of Global Ecology,Carnegie Institution of Washington,Stanford,CA 943.5,USA key laboratory of Quantitative Vegetation Sciences and Research Center for Plant Ecology and Biodiversity Conservation Institute of Botany Chinese Academy of Sciences Beijing 100093 China Department of Global Ecology Carnegie Institution of Washington Stanford CA 94305 USA

As natural tracers, stable isotopes have been extensively used in plant physiological, ecological and envi- ronmental research. Recently, animal physiological ecologists have also applied stable isotope techniques to study plant- animal relationships. The isotopic compositions of animal body generally reflect and integrate their diets over a time period ranging from hours to years to the lifetime of an indi- vidual. When animal living habitat changes or animals move to a new environment, the animal isotopic compositions will shift accordingly. Thus, stable isotope signatures of an ani- mal can truly reflect its food sources, habitat, distribution and movement patterns during a given time period. More- over, by analyzing animal-tissue isotopic compositions at different temporal scales, we can improve our understanding of animal adaptation to environmental changes. Stable iso- tope technique also provides an ideal tool to study animal foodweb relationship and community structure because of isotopic fractionation during the processes of nutrient as- similation by animals. Stable isotope technique can continu- ously measure animal trophic position in a foodweb, which can eventually reveal the predator-prey relationship and its role in determining matter balance and energy flow in the entire ecosystem. Stable isotope technique has been one of the most important and efficient tools in studying plant-animal relationship. In this paper, we first review recent advances in the application of stable isotope techniques to plant-animal relationship research then evaluate their advantages and disadvantages, and finally discuss some future directions associated with stable isotope applications to plant-animal relationship research.

关键词：稳定同位素植物-动物关联性食物来源营养水平动物迁移

Novel Light-induced Proton Solar Cells

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Novel Light-induced Proton Solar Cells

全国第八届有机固体电子过程暨华人有机光电功能材料学术讨论会

作者： Liping Wen Fuqiang Nie~* Lei Jiang~* (key laboratory of Organic Solids Institute of Chemistry chinese {3. of Sciences No.2 North First Street ZhongGuanCun beijing 100190) key laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences No.2 North First StreetZhongGuanCun Beijing 100190

Solar energy is the most inexpensive and clean resource that has attracted intense interest in both fundamental research and practical applications for solving the problem of energy shortage and en

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Modeling of Dust Flux to Oceans from Asian Continent

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Modeling of Dust Flux to Oceans from Asian Continent

第三届中日韩气象学术会议

作者： Shen Yanbo~(1,2) Shi Guangyu~2 (1.laboratory for Climate Studies,National Climate Center,Center for wind and Solar energy Resources Assessment,{3. Meteorological Administration,beijing,100081 2.State key laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics(LASG),Institute of Atmospheric Physics,chinese academy Sciences,beijing,100029)

＜正＞Plenty of dust aerosols are blown into atmosphere during the frequent Asian dust *** aerosols have not only direct and indirect climate effects through radiative processes,but also have important influences on the oceanic environment. As dust aerosols carrying nutriments like Fe fall into ocean,they will facilitate oceanic primary *** change in oceanic primary productivities will then cause the change in the flux ofradiatively active gases between ocean and atmosphere and result in the climate change *** the studying of these profound items, estimation of dust flux into oceans is an important *** this report,two schemes and relative observation data are combined to study the dust deposition flux and amount into seas near china from Asian continent during the spring of 2006.

关键词： Dust aerosol chinese Seas Deposition Flux Numerical simulation Aerosol Optical Depth

energy Decay of Solutions for a Viscoelastic Wave Equation with Weak Nonlinear Dissipation

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Energy Decay of Solutions for a Viscoelastic Wave Equation w...

第三十届中国控制会议

作者： CAO Xiaomin~(1,2,3.,YAO Pengfei~1 1.key laboratory of Systems and Control,Institute of Systems Science, academy of Mathematics and Systems Science,{3. academy of Sciences,beijing 100190,P.R.china 2.Graduate School of the {3. academy of Sciences,beijing 100049,P.R.china 3.School of Mathematical Sciences,Shanxi University,Taiyuan 03.006,P.R.china

＜正＞In this paper,we study decay properties of the solutions for a viscoelastic wave equation with weak nonlinear dissipative term and source term,where dissipative term is *** method we used are perturbed energy me... 详细信息

关键词： energy decay Weak nonlinear dissipative term Viscoelastic wave equation

Integrated CO2 sequestration and geothermal development:Saline aquifers in Beitang depression,Tianjin,North china Basin

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Integrated CO2 sequestration and geothermal development:Sali...

中国科学院地质与地球物理研究所第十届(2010年度)学术年会

作者： Z.Pang key laboratory of Engineering Geomechanics,Institute of Geology and Geophysics, chinese {3. of Sciences,beijing,china F.Yang,Y.Li & Z.Duan key laboratory of Engineering Geomechanics,Institute of Geology and Geophysics, chinese {3. of Sciences,beijing,china Graduate School,chinese {3. of Sciences,beijing,china

This paper presents a conceptual model named CO-EATER(Enhanced Aquifer Thermal energy Recovery)to integrate geological sequestration of CO with geothermal energy development and explains how this can be achieved using the Beitang depression of North china Basin as an *** results of chemical and isotopic characteristics of the saline aquifers are discussed,where field scale tests are underway to verify the *** water is dominated by Na-HCO type with TDS of 0.7-1.5 g/L. Isotopic composition shows that the formation water is of meteoric origin that has slightly reacted with the formation *** geothermometry indicates that the Guantao formation contains geothermal waters with temperatures around 80℃.Due to the low salinity,CO solubility can be rather high, which implies high storage capacity,favorable for CO *** results show that this site is suitable for the planned field scale test from a geochemical point of view.

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食欲素神经肽在应激过程中的作用

生物化学与生物物理进展 2010年第7期37卷 713-719页

作者：魏楚光李勇辉韩锦王慧颖隋南中国科学院心理研究所心理健康重点实验室北京100101 中国科学院研究生院北京100049

食欲素因其在调节能量代谢、睡眠和唤醒等生理功能中的作用而备受关注.近年来研究逐渐发现,食欲素参与应激和奖赏过程的调节,特别是其在药物成瘾过程中的作用是目前的研究热点.主要介绍食欲素系统与应激相关系统之间的神经联系,阐述了... 详细信息

食欲素因其在调节能量代谢、睡眠和唤醒等生理功能中的作用而备受关注.近年来研究逐渐发现,食欲素参与应激和奖赏过程的调节,特别是其在药物成瘾过程中的作用是目前的研究热点.主要介绍食欲素系统与应激相关系统之间的神经联系,阐述了其在应激相关的生理、神经内分泌与行为反应中的作用.并进一步介绍了食欲素系统在应激诱发药物成瘾复吸过程中的作用.食欲素对应激反应的调控作用具有相对特异性,受应激的种类、其他应激相关神经递质系统及食欲素神经元的投射通路等多种因素影响.

关键词：食欲素应激药物成瘾复吸