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Pedosphere 2008年第6期18卷 801-808页

作者： KONG Wei-Dong ZHU Yong-Guan FU Bo-Jie HAN Xiao-Zeng ZHANG Lei HE Ji-Zheng Research center for Eco-Environmental sciences Chinese Academy of Sciences Beijing 100085 （China） Northeast Institute of Geography and agricultural Ecology Chinese Academy of Sciences Harbin 150040 （China） Institute of Microbiology Chinese Academy of Sciences Beijing 100080 （China）

An experiment with seven N, P, K-fertilizer treatments, i.e., control (no fertilizer), NP, NK, PK, NPK, NP2., and NPK2.where P2.and K2.indicate double amounts of P and K fertilizers respectively, was conducted to examine the effect of long-term continuous application of chemical fertilizers on microbial biomass and functional diversity of a black soil (Udoll in the USDA Soil Taxonomy) in Northeast china. The soil microbial biomass C ranged between 94 and 145 mg kg-1, with the NK treatment showing a lower biomass; the functional diversity of soil microbial community ranged from 4.13 to 4.2., with an increasing tendency from control to double-fertilizer treatments, and to triple-fertilizer treatments. The soil microbial biomass, and the microbial functional diversity and evenness did not show any significant differences among the different fertilizer treatments including control, suggesting that the long-term application of chemical fertilization would not result in significant changes in the microbial characteristics of the black soil.

关键词： Biolog black soil chemical fertilizer microbial biomass microbial functional diversity

Fundamental study of CO_2.control technologies and policies in china

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Science china(Technological sciences) 2008年第7期51卷 857-870页

作者： JIN HongGuang1, ZHANG XiLiang2. GAO Lin1, YUE Li2. HE JianKun2.& CAI RuiXian1 1 Institute of Engineering Thermophysics, Chinese academy of sciences, {2. 100080, china 2.Institute of Nuclear and New Energy Technology, Tsinghua University, {2. 100084, china 1. Institute of Engineering Thermophysics Chinese Academy of Sciences Beijing 100080 China 2. Institute of Nuclear and New Energy Technology Tsinghua University Beijing 100084 China

The technical roadmap and policies for CO2.mitigation suitable for china are a common center of attention in the fields of energy, environment, and management science in the country. Emphasizing interaction between technical research and {2. research, this work discovers the potential breakthrough in the integrated field. The technical difficulties of recovering CO2.are pointed out, the mechanism of combining CO2.recovery with energy conversion is investigated, and the basic principle for integrating an environmental-friendly energy system is discussed. Moreover, the formulation of a new energy system that can recover CO2.with very low or even zero energy penalty is proposed, while the assessment methodology and model system for the technical roadmap of CO2.emission control are developed. Finally, a new technical roadmap constructing an energy network suitable for china is proposed, which may provide a new way for the development of sustainable energy and environment technologies.

关键词： CO2 capture and storage technical roadmap energy policy

Conversion of Natural Ecosystems to Cropland Increases the Soil Net Nitrogen Mineralization and Nitrification in Tibet

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Pedosphere 2008年第6期18卷 699-706页

作者： YANG Li-Lin ZHANG Fu-Suo MAO Ren-Zhao JU Xiao-Tang Cai Xiao-Bu LU Ya-Hai College of Resources and Environmental sciences China Agricultural University Beijing 100094 （China） center for agricultural Resources Research Chinese Academy of Sciences Shijiazhuang 050021 （China） College of agricultural and Animal Husbandry Tibet University Linzhi 860000 （China）

A comparative study was conducted to determine the NH4+ and NO3- concentrations in soil profiles and to examine the net nitrogen (N) mineralization and nitrification in adjacent forest, grassland, and cropland soils on the Tibetan Plateau. Cropland soil showed significantly higher inorganic N concentrations in soil profiles compared with forest and grassland soils. NO3- -N accounted for 70%–90% of inorganic N in cropland soil, while NH4+ -N was the main form of inorganic N in forest and grassland soils. The average net N mineralization rate at 0–2. cm depth was approximately twice in cropland soil (1.48 mg kg-1 d-1) as high as in forest (0.83 mg kg-1 d-1) or grassland soil (0.72.mg kg-1 d-1). Cropland showed strong net nitrification, with the net rate almost equal to the total net N mineralization. Urea addition stimulated soil respiration, particularly in forest soil. Most urea-N, however, remained as NH4+ in forest and grassland soils, while NO3- was the main form of inorganic N to increase in cropland soil. Higher rates of net nitrification in cropland soils suggest that land use change on the Tibetan Plateau may lead to high N losses through nitrate leaching.

关键词： land use change microbial biomass nitrification nitrogen mineralization

Strength and Weakness of Animal Vaccine Industry in china

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Asian agricultural Research 2010年第4期2卷 27-30,33页

作者： XIE Hong-hai1,WANG Geng-xin2.1. Harbin Veterinary Research Institute,Chinese academy of agricultural {2.,Harbin 150001,china 2. Research center for agricultural Media and Propagation,Chinese academy of agricultural {2.,beijing 100081,china

Based on the introduction of the status of animal vaccine industry in china,the strength,weakness,opportunity and threat of animal vaccine industry are analyzed by SWOT. Among them,strength is mainly reflected in the broad market,and the favorable industrial policy and development environment. Weakness is the irrational structure of product,the nonstandard production inspection,and the irregular market. Opportunity is mainly reflected in improving government's emphasis on animal security,expanding the scope of compulsory immunization,increasing the proportion of scale breeding,upgrading animal vaccine in china,speeding up industry consolidation and improving market concentration. Threat is manifested mainly in the poor market consciousness due to the long-term planned economy. And animal vaccine enterprises in china are at a relatively disadvantage position during the competition with international companies. Based on these,countermeasures to promote the development of animal vaccine enterprises in china are put forward from the aspects of both government and enterprise. On the one hand,government should improve the laws and regulations and promote the healthy development of vaccine industry,strengthen the manufacturers' consciousness of quality and biological safety,and create a favorable environment for market competition. On the other hand,enterprises should adjust the product structure and strengthen research and innovation,improve the brand competitiveness,take the road of common development,enhance the management capacity of the enterprises,and promote customer service.

关键词： Veterinary biological products industry SWOT Analy

Identification of AtENT3 as the main transporter for uridine uptake in Arabidopsis roots

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Cell Research 2006年第4期16卷 377-388页

作者： Kun Ling Chen~(1,2.*) Min Xin Xu~(2.3,*) Guang Yong Li~(2.3,*) Hui Liang~2.Zong Liang Xia~(2.3) Xin Liu~2.Ji Shu Zhang~1 Ai Min Zhang~2.Dao Wen Wang~2.~1School of Life sciences,Northwest agricultural and Forestry University,Yangling 712.00,{2. ~2.3} for Plant Gene Research(beijing)and the State Kev Laboratory of Plant Cell and Chromosome Engineering,Institute of Genetics and Developmental Biology,Chinese academy of sciences,Datun Road,Chaovang District,beijing 100101,{2. ~3Graduate School of the Chinese academy of sciences,Yuquan Road,Shijingshan District,beijing 100039,{2. SchoolofLifesciences NorthwestAgriculturalandForestryUniversityYangling712100China andtheStateKeyLaboratoryofPlantCellandChromosomeEngineering InstituteofGeneticsandDevelopmen

Previous studies have shown that Arabidopsis equilibrative nucleoside transporters （AtENTs） possess transport activitieswhen produced in yeast cells and are differentially expressed in Arabidopsis ***,we report further analysis onthe nucleoside transport activities and transcriptional patterns of AtENT *** recombinant proteins of AtENTs3,6,and 7,but not those of AtENTs 1,2.4,and 8,were found to transport thymidine with high *** to previ-ous suggestion that AtENT1 may not transport uridine,this work showed that recombinant AtENT1 was a pH-dependentand high-affinity transporter of *** grown on MS plates,the AtENT3 knockout plants were more tolerant tothe cytotoxic uridine analog 5-fluorouridine than wild-type plants and the knockout plants ofAtENT 1 or ***-sistent with this observation,the AtENT3 knockout line exhibited a significantly decreased ability to take up [3H]uridinevia the roots when compared with wild-type plants and the plants with mutated AtENT 1 or *** indicates thatAtENT3,but not AtENTs 1 and 6,is the main transporter for uridine uptake in Arabidopsis *** transcription ofAtENTs 1,3,4,6,7,and 8 was regulated in a complex manner during leaf development and *** contrast,thesix AtENT members were coordinately induced during seed *** work provides new information on thetransport properties of recombinant AtENT proteins and new clues for future studies of the in vivo transport activitiesand physiological functions of the different ENT proteins in Arabidopsis plants.

关键词： Arabidopsis equilibrative nucleoside transporter expression pattern nucleoside transport functional analysis

Environmental awareness and the contemporary society of china——an analysis and an understanding

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Journal of Environmental sciences 1999年第4期11卷 504-509页

作者： XU Song\|ling (center for Environment and Development, Chinese academy of Social {2., beijing 100732.china) Ctr. for Environment and Development Chinese Academy of Social Sciences Beijing 100732 China

This paper presents an understanding of the relationship between the environmental awareness(EA) and contemporary society of china. The EA of three of the major groups of chinas society, namely intellectuals, government officials, and urban societies are characterized one by one. A number of factors of affecting the EA were investigated in details, the keys among which are the personal level of knowledge and morality, the social and economic development level, environmental codes, environment\|related professional and public regulations, different professional performances. Some {2. proposals are finally provided for enhancing the EA of chinas society.

关键词： environmental awareness contemporary society of china sustainable development

Phosphorus release: A biogeochemical insight from a restored lakeside wetland in the Yangtze-Huaihe region, china

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Journal of Environmental sciences 2010年第3期22卷 347-354页

作者： Xiaoling Zhou, Baoqing Shan, Hong Zhang State Key Laboratory of Environmental Aquatic Chemistry, Research center for Eco-Environmental sciences, Chinese {2. of sciences, beijing 100085, china. [a] State Key Laboratory of Environmental Aquatic Chemistry Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China

The heavy intensification of agriculture in East china since the 1980s caused the decrease of lake area and water storage capacity with impediment of regulation, lake eutrophication and frequent floods. Many restoration projects have been conducted. However, the knowledge of biogeochemical factors that drive nutrient cycles during the early stage of restoration is still limited. We studied the effect of the remediation of a patch of near-shore shallow wetland on the northern bank of Chaohu Lake in the Yangtze-Huaihe region, china, which was used as rice paddy for many years, on the behavior of phosphorus. Redox potential （ORP）, temperature and dissolved oxygen were monitored in situ from May 2.06 to November 2.07. Samples of soil pore water were collected during this time for the determination of different forms of iron and phosphorus. ORP showed a clear transition of the wetland soil from an oxidized state in winter to a reduced state in summer. The decrease of ORP correlated with the release of large amounts of Fe and P. The maxima of total dissolved Fe and total dissolved P in the summer of the second year were （13.8 ± 6.8） mg/L and （0.88 ± 0.2.） mg/L, respectively. It is worth noticing that P concentration far exceeded the critical value of lake eutrophication （0.02.mg/L）. The pressure of P release to the adjacent lake during the first two years of wetland restoration from rice fields should be taken into account by environmental {2. makers.

关键词： wetland restoration phosphorus eutrophication redox potential iron

Uncertainties in assessing the effect of climate change on agriculture using model simulation and uncertainty processing methods

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Chinese Science Bulletin 2011年第8期56卷 729-737页

作者： YAO FengMei QIN PengCheng ZHANG JiaHua LIN ErDa BOKEN Vijendra College of Earth Science Graduate University of Chinese Academy of Sciences Beijing 100049 China center for Earth Observation and Digital Earth Chinese Academy of Sciences Beijing 100094 China Chinese academy of Meteorological sciences Beijing 100081 China School of Geoscience Yangtze University Jingzhou 434025 China Institute of Environment and Sustainable Development in Agriculture Chinese Academy of Agricultural Sciences Beijing 100081 China Department of Geography and Earth Science University of Nebraska at Kearney Kearney NE 68849 USA

Model simulation is an important way to study the effects of climate change on *** assessment is subject to a range of uncertainties because of either incomplete knowledge or model technical uncertainties,impeding effective decision-making to climate *** the basis of uncertainties in the impact assessment at different levels,this article systematically summarizes the sources and propagation of uncertainty in the assessment of the effect of climate change on agriculture in terms of the climate projection,the assessment process,and the crop models linking to climate ***,techniques and methods focusing on different levels and sources of uncertainty and uncertainty propagation are introduced,and shortcomings and insufficiencies in uncertainty processing are pointed ***,in terms of how to accurately assess the effect of climate change on agriculture,improvements to further decrease potential uncertainty are suggested.

关键词：不确定性模型影响评估气候变化农业影响模型模拟不确定性传播气候预测气候模型

Accountable authority key policy attribute-based encryption

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Science china(Information sciences) 2012年第7期55卷 1631-1638页

作者： WANG YongTao 1,2.,CHEN KeFei 1,3 ,LONG Yu 1,4 & LIU ZhaoHui 2.1 Department of Computer Science and Engineering,Shanghai Jiao Tong University,Shanghai 2.02.0,china 2.china Information Technology Security Evaluation {2.,beijing 100085,china 3 Shanghai Key Laboratory of Scalable Computing and Systems,Shanghai Jiao Tong University,Shanghai,2.02.0,china 4 State Key Laboratory of Information Security,Graduate School of Chinese academy of sciences,100039,china 1. Department of Computer Science and Engineering Shanghai Jiao Tong University Shanghai 200240 China2. China Information Technology Security Evaluation Center Beijing 100085 China3. Shanghai Key Laboratory of Scalable Computing and Systems Shanghai Jiao Tong University Shanghai 200240 China4. State Key Laboratory of Information Security Graduate School of Chinese Academy of Sciences Beijing 100039 China

We present an accountable authority key policy attribute-based encryption (A-KPABE) *** this paper,we extend Goyal's work to key policy attribute-based encryption *** first generalize the notion of accountable authority in key policy attribute-based encryption scenario,and then give a *** addition,our scheme is shown to be secure in the standard model under the modified Bilinear Decisional Diffie-Hellman (mBDDH) assumption.

关键词： accountable authority key policy attribute-based encryption standard model access structure

Mesh theory of angle modified dual tori double-enveloping toroidal worm drive

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Science china(Technological sciences) 2010年第7期53卷 1913-1927页

作者： ZHAO YaPing1, SU DaiZhong2. ZHANG Zhao1, WEI WenJun3 & DONG XueZhu3 1 College of Machinery and Automation, Wuhan University of Science and Technology, Wuhan 430081, china 2.Advanced Design and Manufacturing Engineering center, Nottingham Trent University, Nottingham NG1 4BU, UK 3 College of Engineering, china agricultural University, beijing 100083, china 1. College of Machinery and Automation Wuhan University of Science and Technology Wuhan 430081 China2. Advanced Design and Manufacturing Engineering Center Nottingham Trent University Nottingham NG1 4BU UK3. College of Engineering China Agricultural University Beijing 100083 China

In this paper, the meshing theory of the angle modified hourglass worm drive is enriched and developed. The ordinary condition of the angle modification is derived and the physical significance of the modification is interpreted. A normal section methodology is proposed for meshing analysis, which can be used to compute the normal distance near a singular meshing point of a conjugate surface couple. By means of the method and after analyzing the normal transversals, it is specified that the worm helicoid, the nominal former contact zone and the new contact zone intersect each other along the locus of singular points of the instantaneous contact lines of an angle-modified worm pair. As a result, it is explained clearly that those three osculate each other but the osculations are different in degree. Moreover, the mechanism of removing the twice-contacted zone from the worm gear tooth surface is clarified and the reason of shortening the worm working length is also elucidated. With the help of the theory described in the present paper and the thorough and systematic research on the relevant meshing characteristics, the angle modified dual tori double-enveloping toroidal worm drive has been shown to be an excellent new-fashioned hourglass worm set.

关键词： hourglass worm angle modification double-enveloping osculation normal transversal