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生物地球化学     
相关语句
  biogeochemistry
     Advances in Marine Biogeochemistry Studiesin China(1998-2002)
     中国海洋生物地球化学研究进展(1998-2002)
短句来源
     ④ Acknowledge interrelations between LUCC, Biogeochemistry and climate.
     ④认识LUCC、生物地球化学和气候之间的相互关系。
短句来源
     Application of Geographical Information System (GIS) to the Study of Mercury Biogeochemistry in the Environment
     地理信息系统(GIS)在汞生物地球化学研究中的应用
短句来源
     Studies on the biogeochemistry of dissolved N2O and CH4 in different sea waters will be helpful to estimate the contribution of oceanic emissions to the atmospheric N2O and CH4 on a global scale, and to predict the influence of oceanic emissions on the global climate.
     因此,对不同的海洋环境中溶解N2O和CH4的生物地球化学行为进行研究,对在全球尺度上估算海洋对大气N2O和CH4的贡献和对未来气候的影响具有重要意义。
短句来源
     RESEARCH ON BIOGEOCHEMISTRY OF RELATIONSHIPBETWEEN ALGAE AND CO_2 CYCLE IN NATURE
     藻类生物与自然界CO_2循环的生物地球化学
短句来源
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  biogeochemical
     The LOICZ biogeochemical element budget model was tested in Jiulong River Estuary, the result indicated that riverine input ot DIP is 2.81×10 7mol/a, and the DIP of 10.93×10 7mol/a of mixing flow is significantly larger than to DIP from river and residence flow, so the net internal sink of DIP totals 8.05×10 7mol/a across the system.
     按照LOICZ的模拟指南 ,九龙江河口区采用单箱模型模拟其生物地球化学元素的通量。 结果表明 ,九龙江河流输入进河口系统的DIP通量为 2 .81× 10 7mol/a ,交换流带入河口区DIP通量为 10 .93× 10 7mol/a ,因此 ,净沉淀量为 8.0 5× 10 7mol/a。
短句来源
     Advances in Biogeochemical Process Research on Marine Carbon Cycles in China(1998-2002)
     中国海洋碳循环生物地球化学过程研究的主要进展(1998-2002)
短句来源
     CO2 from atmosphere, produced by biological activity or from deep-seated earth can dissolve in water and takes part in the action: CO2+H2O+CaCO3→Ca2++2HCO3-. At last, the karst water is abundant in HCO3- and CO2 increases biogeochemical cycle and karst development.
     无论是大气中的CO2还是生物来源以及来自地球深部的CO2对于岩溶生态系统具有重要的作用并通过CO2+H2O+CaCO3→Ca2++2HCO3-反应使水体中富含HCO3-,并促进岩溶地区的生物地球化学循环以及岩溶的发育。
短句来源
     BIOGEOCHEMICAL CONCEPTS AND METHODOLOGIES: DEVELOPMENT OF THT DNDC MODEL
     生物地球化学的概念与方法──DNDC模型的发展
短句来源
     The plants are divided into two biogeochemical types that are rich in K and Na, but poor in Ca and Mg, and rich in Ca and Mg, but poor in K and Na.
     植物可分为富K、Na贫Ca、Mg和富Ca、Mg 贫K、Na两种生物地球化学类型。
短句来源
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  biogeochemical effect
     Biogeochemical Effect of Gold Deposit and Remote Sensing Information Extract
     金矿生物地球化学效应及遥感信息提取
短句来源
     This paper deals with the biogeochemical properties of gold deposit, biogeochemical effects on plants and the characteristic of the spectral reflectance and remote sensing image, and the abstraction methods of specialized information of extracting the abnormal feature of biogeochemical effect using remote sensing image processing.
     总结了金矿的生物地球化学性质、植物的生物地球化学效应特征以及其波谱和遥感影像特征 ,以及利用遥感图像处理提取生物地球化学效应引起的植被光谱异常信息的专题信息提取方法。
短句来源
     In vegetation district,as a result of that the plant absorb Au and associated elements of lock and soil,the contents of Au and associated elements,pigment,water surface temperature,and cells structure in leaves occur variations,even the plant cause abnormality of biogeochemical effect,thus it appear abnormality in the spectral information of TM image.
     在植被覆盖区,由于植物吸收了土壤和岩石中的矿化元素,致使植物叶体中的矿化元素含量、叶色素含量、水含量、叶面温度和细胞结构等发生变化,即引起了植物的生物地球化学效应,在遥感TM光谱信息上出现差异性。
短句来源
     Information of geological structure,wall-rock alteration and vegetation in relation to ore formation of Au deposit was extracted from TM image,and synthesized to reveal the vegetation abnormality of Au biogeochemical effect,which was further applied to specify and enclose remote sensing abnormal areas of Au.
     利用遥感TM图象信息中包含与金矿成矿有关的构造、蚀变及植被信息,经计算机遥感图象处理,综合其信息,提取金矿生物地球化学效应的植被异常信息,从而圈定金矿遥感异常区。
短句来源
     BIOGEOCHEMICAL EFFECT ON POSTDEPOSITIONAL REMOBILIZATION OF Fe-Mn IN LAKE AHA, GUIZHOU PROVINCE
     阿哈湖Fe、Mn沉积后再迁移的生物地球化学机理
短句来源
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  “生物地球化学”译为未确定词的双语例句
     The correlations between δ15Np and otherparameters changes among different sections are weak both in dryand wet season, and the δ 15Np fractionation caused by thebiogeochemical behavior of SPON is not obvious;
     枯水期、丰水期长江不同调查断面δ~(15)Np和其他参数变化的相关性不明显,SPON生物地球化学作用导致的δ~(15)Np分馏作用不明显;
短句来源
     Carbon cycling in wetlands distinguishes from that in other types of ecosystems because of special eco-hydrological process and soil environment.
     气候条件是湿地碳循环生物地球化学过程的重要驱动因素,湿地特殊的生态水文过程和土壤环境条件,使得湿地碳循环具有区别于其它生态系统碳循环的特征。
短句来源
     Phosphorus is an important element in agricultural non-point source pollution. Its important to research the function of wetland in removal phosphorus in water.
     磷是农业非点源污染的重要元素之一,又是导致湿地及下游水体富营养化的重要原因,研究湿地对水中磷素的净化作用是湿地生物地球化学研究和流域水环境保护研究的重要环节。
短句来源
     Results: 1. The distribution of the main microbe groups in the subzones was different and the geochemical characteristics were obvious.
     结果:1.十红滩铀矿床不同亚带岩石中主要微生物类群的分布特征不同,呈现出明显的生物地球化学分带性。
短句来源
     The hot spots delineated in this review are: emission sources of trace gases from agricultural ecosystems, the missing carbon sink, the coupling of carbon, nitrogen, sulfur, and phosphorus, the application of isotopic abundance ratio and other tracer techniques, modeling of nitrous oxide and methane formation processes.
     最后有选择地阐述了生物地球化学循环各领域(源、汇、转化过程、测量方法、模式等)内的发展趋势与热点,其中主要有农业生态系统含碳、氮痕量气体的源、遗漏的碳汇、碳、氮、硫、磷间的耦合作用、同位素丰度比及指示物的应用和氧化亚氮和甲烷释放模式。
短句来源
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  biogeochemistry
A preliminary biogeochemistry-based quantification of primary productivity of end-Permian deep-water basin in Dongpan Section, G
      
Subsequently, distribution regularities of these measurement indicators are discussed, and the biogeochemistry processes between sediments and plants are also analyzed.
      
Lebedeva, N.V., Ekotoksikologiya i biogeokhimiya geograficheskikh populyatsii ptits (The Ecotoxicology and Biogeochemistry of Ge
      
Our data provide insight into the biogeochemistry of the Kara Sea and make it possible to specify the background values needed for ecological control during the future exploration operations and extraction of hydrocarbons in the Kara Sea.
      
The abundance of COC suggested that COC could play important roles in input fluxes and biogeochemistry of organic carbon.
      
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  biogeochemical
We analyzed spatial distribution of the main types of water bodies as well as the cascade structure formed by some biogeochemical barriers near the Ob-Yenisey flaw polynya.
      
Kamshilov's Informational-Biogeochemical Concept of Life
      
Vernadsky, and his original informational-biogeochemical concept of life were described.
      
Hydrochemical and microbiological investigation in the Kola Bay in 2002-2003 demonstrated that the distribution of bacteria is notably influenced by biogeochemical barriers formed by mixing fresh and sea water.
      
Pellets of Some Mollusks in the Biogeochemical Flows of C, N, P, Si, and Al
      
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  biogeochemical effect
Moreover, the concentrations of elements in the lake water and sediment are effected strongly by the lithological characters of the catchment; on the other hand, the biogeochemical effect also acts as an important role.
      
Finally, the biogeochemical effect of land cover change is explored using a dynamically coupled inorganic ocean and terrestrial carbon cycle model.
      
Given that the biogeochemical effect represents only an increase in atmospheric CO2 of 20 ppm, as opposed to 127 ppm for A2, this is not surprising.
      
In A2chem, only the biogeochemical effect of future land cover changes is considered.
      
The biogeochemical effect is very small, and therefore the combined effect is comparable with the results from A2.
      
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The materials of present report were collected from reconnaissence soil survey of Kwangtung and Kwangsi provinces in 1958—1960. Soils investigated include yellow earths, red earths and lateritic soils. They are developed under natural vegetations of tropic monsoon forest (secondary), subtropic evergreen broadleaf forest, conifer and broadleaf mixed forest, subalpine dwarfing and bamboo ferests, confer forests of Cunninghamia lanceolata and Pinus massoniana, and grass land. A few samples of rice paddy soil were...

The materials of present report were collected from reconnaissence soil survey of Kwangtung and Kwangsi provinces in 1958—1960. Soils investigated include yellow earths, red earths and lateritic soils. They are developed under natural vegetations of tropic monsoon forest (secondary), subtropic evergreen broadleaf forest, conifer and broadleaf mixed forest, subalpine dwarfing and bamboo ferests, confer forests of Cunninghamia lanceolata and Pinus massoniana, and grass land. A few samples of rice paddy soil were also studied for comparison. Laboratory investigations invplved the determination of chemical composition of forest litters, fraction of soil humus (after Turin and Kononova), and analysis of soil exchangeable bases, active iron and alumina, etc. From the results obtained the writers come to the following conclusions: 1. The ratios of humic acid over fulvic acid under natural vegetations are usually less than 1. Fulvic acid prevails in acid soils of tropic and subtropic regions with the presence of active iron and alumina. On the contrary, intensively cukivated paddy soils of neutral to slightly alkaline reaction in the same areas, after a long-time application of lime and manures, give a humic acid over fulvic acid ratio of about 2. 2. Active soil humus, including humic and fulvic acid extractable by 0.1 N NaOH (Fraction Ⅰ), also predominates in soil organic matter. The ratio of soil humus "Fraction 1" over "Fraction Ⅱ, including humic acid and fulvic acid only soluble through repeatedly extraction by 0.1 N H_2SO_4 and NaOH", ranges from 5:1 to 10:1. 3. Soils developed under natural vegetations contain 20—35% of readily soluble humus {extractable by 0.05 N H_2SO_4) in total organic matter. Rice paddy soils in the same area usually contain readily soluble humus less than 5%. It appears that under present agricultural practices, the more active forms of soil humus undergo rapid decomposition, and the maintenance of soil fertility is largely dependded on manures and nitrogenous fertilizers. 4. Soils of the investigeted areas contain 40—50% humin (residual organic matter resistant 1.0 acid and alkaline extraction) in total organic matter. 5. Soil litters of conifer forest of Cunninghamia lanceolate contain CaO+Mg+K_2O+Na_2O up to 59.51% and SiO_2 10.57% in the ash. Litters of bamboo forest contain CaO+MgO+K_2O+ Na_2O 8.87% and SiO_2 up to 78.21% in the ash. Litters of Pine massoniana contain CaO+MgO + K_2O+Na_2O 11.18% and a very high content of A1_2O_3 (13.91%). The present data, however, give no correlation between the chemical composition of soil litter and that of soil exchangeable bases. Soils under Pine massoniana contain relatively greater amounts of exchangeable alumina (4—16 m.e./100 gm. of soil) and active iron (65—200 m.e./100 gm. of soil) in surface layer.

本文对华南地区不同植被下的土壤有机貭、土壤活性矿物貭組成及枯枝落叶层进行了研究,企图探求植被类型对于土壤腐殖貭組成以及肥力变化的影响。供試土壤包括山地草甸土、黃壤、紅壤及砖紅壤性紅壤,由不同母貭发育而成。植被类型包括常綠闊叶林、針叶闊叶混交林、高山矮林及竹林、杉木林、馬尾松灌丛、草坡等。此外,还选了三个珠江三角洲地区不同肥力的水稻土,以比較自然植被下土壤性貭和农田土壤性貭的异同。根据初步研究結果,获得下列几点认識。 1.土壤活性腐殖质的变化两广地区自然植被下的土壤,其活性腐殖貭占土壤有机貭总量的百分比显然高于农田土壤。森林及以禾本科为主的中生性草地下的土壤,表土有机貭中合有約20—35%的活性腐殖貭(为0.1 N NaOH所能提取),但是水稻土中,通常只占6%以下。这点說明了在热带和亚热带地区的生物气候条件下,一年2—3造的耕作制度,可使結构比較簡单的活性腐殖貭很快的被矿化,而土壤肥力的維持在很大程度上依賴于有机肥料和化学肥料的逐年补給。 2.土壤中胡敏酸与富里酸的比率华南自然植被下的土壤有机貭中,胡敏酸与富里酸的比率通常小于1,紅壤地区土壤中富里酸比胡敏酸高的特点,是由于富里酸能在酸性溶液中和活性R_2O_...

本文对华南地区不同植被下的土壤有机貭、土壤活性矿物貭組成及枯枝落叶层进行了研究,企图探求植被类型对于土壤腐殖貭組成以及肥力变化的影响。供試土壤包括山地草甸土、黃壤、紅壤及砖紅壤性紅壤,由不同母貭发育而成。植被类型包括常綠闊叶林、針叶闊叶混交林、高山矮林及竹林、杉木林、馬尾松灌丛、草坡等。此外,还选了三个珠江三角洲地区不同肥力的水稻土,以比較自然植被下土壤性貭和农田土壤性貭的异同。根据初步研究結果,获得下列几点认識。 1.土壤活性腐殖质的变化两广地区自然植被下的土壤,其活性腐殖貭占土壤有机貭总量的百分比显然高于农田土壤。森林及以禾本科为主的中生性草地下的土壤,表土有机貭中合有約20—35%的活性腐殖貭(为0.1 N NaOH所能提取),但是水稻土中,通常只占6%以下。这点說明了在热带和亚热带地区的生物气候条件下,一年2—3造的耕作制度,可使結构比較簡单的活性腐殖貭很快的被矿化,而土壤肥力的維持在很大程度上依賴于有机肥料和化学肥料的逐年补給。 2.土壤中胡敏酸与富里酸的比率华南自然植被下的土壤有机貭中,胡敏酸与富里酸的比率通常小于1,紅壤地区土壤中富里酸比胡敏酸高的特点,是由于富里酸能在酸性溶液中和活性R_2O_3相結合(特別是活性鉄),这項特性在邱林、科諾諾娃、波諾馬列娃等人的研究中早已証明了。珠江三角洲上的高度熟化水稻土(土壤pH7.8),由于长期施用有机肥料及石灰的影响,有机貭中胡敏酸的数量高出富里酸一倍,胡敏酸与富里酸的比率为1.95。但是在新垦的紅壤性水稻土中(土壤pH4.5),这項比率是0.39,这点也可以証明有机貭分解过程和富里酸的形成是和土壤酸度及活性鉄、鋁有关的。 3.活性铁和鋁与腐殖质組成的关系本区一般森林及草本植被下的土壤,表土活性鋁的合量通常为每百克土4—10毫克当量,活性鉄为20—100毫克当量;馬尾松灌丛下的紅壤,活性鋁的含量每百克土可达20毫克当量左右。这些土壤的盐基飽和度一般在20—30%之間,每百克土的代換性鈣通常仅在1—2毫克当量上下,但是土壤有机貭分組分析結果,第一組腐殖貭(包括活性較強的胡敏酸和富里酸)的含量远远超过了第二組腐殖貭(指由酸液和碱液反复提取以后能溶解的部分),它們的比率为5:1和10:1(只有一个例外)。这項結果說明土壤中大量活性鋁离子和鉄离子的存在,使腐殖貭的活度增強。在珠江三角洲水稻土中,第一組腐殖貭和第二組腐殖貭的比例也在这个范围內。 4.土壤腐殖貭中的不溶性殘渣(胡敏素)的含量在表土中所有供試土壤都很一致,約占土壤腐殖貭总量的40—50%上下。植被类型、海拔高度、耕作过程、成土母质等对于胡敏素的合量,均沒有明显的影响。这样在热带和亚热带土壤的腐殖貭中,似乎有一半是胡敏素,它在短期內是不能矿化的。 5.土壤腐殖貭中的碳氮比率(C/N) 森林及草本植被下的表土腐殖貭中,其C/N比率通常在10—15左右,只有馬尾松灌丛下的紅壤,C/N比率为19.6。在这个地区的水稻土中C/N比率一般为9—11。耕作縮小了C/N比率,但是自然植被下有机貭中活性腐殖貭的含量,都远远地超过农田土壤,因此,碳氮比率的縮小,很难认为土壤有机貭中氮素有效性的提高。这在国內外的研究材料中也指出过,例如合胡敏素极高的泥炭和褐煤,其C/N比率可以在10以下。 6.不同植被下殘落物的灰分組成杉木林的殘落物合有最高的基性物貭,CaO+MgO+K_2O+Na_2O的总量占灰分的59.51%;竹林和馬尾松灌丛的殘落物合基性物貭最低,前者为8.87%,后者为11.18%(都是CaO、MgO、K_2O、Na_2O的总量)。竹林殘落物的灰分中含SiO_2高达78.21%,而杉木林的殘落物灰分中含SiO_2量最低,为10.57%。馬尾松灌丛及亚热带針闊叶混交林下的殘落物灰分中含Al_2O_3高于其他植被的殘落物,为13.91%5及12.86%。其他一般的常綠闊叶林、針闊叶混交林和亚高山矮林等殘落物灰分中的基性物貭总量均在30%左右。虽然不同植被类型地表殘落物的矿貭組成有明显的差异,但就現在的初步材料,远远不足以闡明这項差异在生物物貭循环过程中的作用。这些成分上的变化,对于土壤活性矿物貭很少有直接的相关性。只有馬尾松灌丛下的紅壤,其活性鋁含量高于一般土壤,这点可能是受了殘落物貭腐解体的影响。我們初步接触了华南地区的植被类型、土壤腐殖貭組成和活性矿物貭間相互关系的問題以后,觉得波雷諾夫所启示我們的生物地球化学的研究方向,在这一地区中有許多工作可以推进。这項研究方法如果进一步地应用于农田土壤中的輪作方式及耕作措施对于土壤肥力消长关系的研究,便可以把森林和草地土壤以及农田土壤的生成发育方向做出具体的比較。此外,我們感到,尽管邱林、科諾諾娃和瓦克斯曼(Waksman,S.A.)等近三十年来在土壤有机貭的研究上做了很多工作,但是目下的有机貭分級方法应用于热带及亚热带的土壤(特别是水稻土)的适应性还值得研究。至于胡敏酸、富里酸等在土壤中与活性矿物貭的結合情况,以及各种腐殖貭物貭对于土壤肥力及植物营养上的作用,更是一个急待进一步研究的問題。

The present paper describes the properties and the forming condition and process of the Reddish-cinnamon Soil on South-west Hainan Island by using the principles of landscapegeochemistry to study the corelation

本文是一篇摘要稿,通过各景观要素的综合分析,对红褐土分布区的成土过程以简要评述。原文分四部分。首先,在母岩、风化物,粘粒(≤1微米)全量分析的基础上运用了岩石化学原理与I.Barshad关于土壤发育的理论分别揭示母岩风化过程中原生矿物组合的变化与成土时粘粒的淋失累积规律。水迁移是整个过程的另一种形式,因此亦用彼列尔曼(А.И.Перелъмен)迁移系列表示各元素活动性大小,从而反映琼西四种基本风化壳类型的特有面貌。其次,在50余种植物灰分分析和八类生物吸收系列基础上,导出了生物地球化学相的概念,把琼岛分为四个大类,后者是热带地区湿润程度的不同在植物吸收特性经度地带性的表现。再次,生物循环的特性在土壤腐殖质形成和分解过程中得到反映,这样土壤两个成土过程:粘粒化和腐殖质化都与该区水湿条件有紧密依存关系,即粘粒生成量(F)、胡敏酸与富里酸比值(Cr/Cφ)与本区年降水量(r)的相关性可用偏回归方程表示。最后是在地质循环与生物循环矛盾统一下,红褐土形成过程及其内部差异,由此得出红褐土可以分为四个亚类,指出它们在发生学的联系。本文就是上述内容的摘要,而着重于最后一部分,其他方面待今后再一步刊出供大家讨论。

A preliminary survey was made on the etiology or Se-Vitamin E deficiencysyndrome of farm animals in Heilongjiang province.The survey indicated thatthe syndrome had been reported in many regions of the province on swene,sheep,cattle,horse,deer,rabbit,mink and poultry with heavier losses in youngstock.Its occurance was endemic,influenced by specific enviromental facfors,the determining one being low soil selenium content.In essentiality,it may becatagorizeb as an epidemic of bio-geologic chemical nature.Judging...

A preliminary survey was made on the etiology or Se-Vitamin E deficiencysyndrome of farm animals in Heilongjiang province.The survey indicated thatthe syndrome had been reported in many regions of the province on swene,sheep,cattle,horse,deer,rabbit,mink and poultry with heavier losses in youngstock.Its occurance was endemic,influenced by specific enviromental facfors,the determining one being low soil selenium content.In essentiality,it may becatagorizeb as an epidemic of bio-geologic chemical nature.Judging from itsetiological pattern and distribution,this syndrome may be closely related tokeshan disease in humans.

本文初步综合报导了黑龙江省畜禽硒—维生素 E 缺乏综合征的流行病学调查研究结果。通过调查研究,确认在我省大部分地区均有本病的发生,侵害猪、羊、牛、马、鹿、兔、水貂及鸡,北京鸭等多种畜禽,且以幼龄畜禽病情严重。综合征的流行具有地区性的待点,即受特定的环境条件所制约。初步查明,低硒环境(土壤)是致病的根本条件。因此,疾病的实质是一种生物地球化学性流行病。调查结果表明,从流行病学现象及病区的分布来看,本综合征与人的克山病有一定的相关性。

 
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