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   土壤演变 的翻译结果: 查询用时:0.016秒
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土壤演变
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  soil evolution
     There was not apparent change of pH value within the depth of 0~60cm soil layer in the process of soil evolution.
     在土壤演变过程中 0~ 6 0 cm土层 p H值没有明显变化。
短句来源
     Restoration succession of wetland soils and their changes of water and nutrients were studied with field investigation and laboratorial analysis to explore the effect of ecological restoration on wetland soil evolution and soil fertility in Ruoergai Plateau.
     用野外调查和室内分析结合的方法研究了若尔盖高原湿地土壤的生态演替及土壤有效水分和养分的变化 ,以探讨湿地生态恢复过程对土壤演变及肥力状况的影响。
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  “土壤演变”译为未确定词的双语例句
     The dissertation reviews the agriculture production history, analyzes the status quo, the change of river system, soil evolvement and the forming course of economic position, and discusses the precondition of the agricultural development of the HHH plain.
     总体上考察了黄淮海平原农业生产历史、现状形势; 浅析了黄淮海平原的水系变迁,土壤演变过程及其经济区位条件的形成,初步探讨了该平原农业发展的先决条件。
短句来源
     Investigations on the syntheses, transformations and properties of them could shed light on geochemistry behaviors of Mn, soil progress, and relations between soil quality and environments, they are also of great significance to promote exploration and utilization of Mn oxide minerals.
     开展土壤氧化锰矿物的合成、转化及性质研究,对于深入了解和认识锰的地球化学行为、土壤演变、土壤质量与生态环境之间的关系,促进氧化锰矿物资源的开发与利用具有重要的理论和实践意义。
短句来源
     soil gradually developed soil formation process was humification and leaching and soil type e-volved form yellow loess soil to brown forest soil But after forest destruction Because of severely accelerated soil erosion soil profile was gradually eroded and damaged and soil changed to yel-low loess soil.
     在植被恢复过程中,土壤发育程度逐渐增强,具有一定的腐殖化过程和淋溶过程,土壤向褐色森林型土壤演变; 林地被人为开垦破坏后,加速侵蚀迅速发展导致土壤剖面迅速遭到破坏,土壤向黄绵土演变。
短句来源
     The results showed: There were apparent changes of physical properties and nutrition content in the evolution process of city soil quality.
     结果表明 :城市土壤演变过程中土壤物理性质和养分含量发生了明显的变化。
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  相似匹配句对
     evolution of the flora of soil animals and micro organism;
     土壤动物和微生物区系演变
短句来源
     Soil quality and its development
     土壤质量及其演变
短句来源
     soil fertility;
     土壤肥力;
短句来源
     And thus function could not be ignored in the soil water and salt movement and redistribution in saline grassland.
     土壤含水.
短句来源
     Evolution on the concept of clone
     克隆概念的演变
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  soil evolution
The climatic change was manifested in the soil evolution at the taxonomic levels of soil genera and soil subtypes (in the ecotone zones).
      
Cooperation of pedology with other sciences upon studying soil evolution
      
Ba/Nb, significantly correlative with soil age, can be used to evaluate soil evolution.
      
It is concluded that many of them cannot be justified, especially those that involve ignoring many key processes known to be important to biogeochemical cycling and soil evolution in upland catchments.
      
Analysing soil evolution factors, effects of human activity on soil cannot be neglected.
      
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Through the survey of soil property and the observational fixed spots on the coastal hilly soil of Fujian province it is found that the strong wind from September to next April makes the evaporation of soil moisture exceed the rainfall in the same period. Under the effects of wind and water erosions the coastal hilly soil evolves into sand soil, sandy red soil, sandy muck soil,sediment soil by wind-water erosion and red loam by wind-water erosion.The wind erosion danevolution of the soil results in the decrease...

Through the survey of soil property and the observational fixed spots on the coastal hilly soil of Fujian province it is found that the strong wind from September to next April makes the evaporation of soil moisture exceed the rainfall in the same period. Under the effects of wind and water erosions the coastal hilly soil evolves into sand soil, sandy red soil, sandy muck soil,sediment soil by wind-water erosion and red loam by wind-water erosion.The wind erosion danevolution of the soil results in the decrease of clay particals content in soil and the capability to conserve water and fertility, and the coarse texture of soil. The occurrence and development of wind erosion is affected by p]ant cover, tillage, soil texture, soil moisture and wind power, etc..

通过对福建沿海土壤性质的调查和风蚀定位观测,发现从每年6月至翌年3月的强风使土壤水分的蒸发量超过降雨量。在风蚀和水蚀的作用下,沿海土壤演变为沙土,沙质红壤土,沙质海泥土,风水蚀堆积土和风水蚀红壤。土壤风蚀和演变的结果导致土壤粘粒含量、土壤保水保肥能力降低和土壤质地粗砂化。风蚀的发生发展受植被覆盖、耕作活动、土壤质地、土壤水分和风力等因子的影响。

There are over 100 000 hactares of albic soils in hills and mounds betweenShangdong and Jiangsu Provinces.Their average profile is constituted by two parts.The upper part includes a gray, silt sandy and weakly structured anthropic epipedonand underlying albic soils,locally with bottom gravels cemented with dark brownoxyhydrates, and the lower part is generally brownish clay with well developed prismatic structure, transiting to weathered metamorphic rocks, dominantly gneiss. Theformation of albic soils used...

There are over 100 000 hactares of albic soils in hills and mounds betweenShangdong and Jiangsu Provinces.Their average profile is constituted by two parts.The upper part includes a gray, silt sandy and weakly structured anthropic epipedonand underlying albic soils,locally with bottom gravels cemented with dark brownoxyhydrates, and the lower part is generally brownish clay with well developed prismatic structure, transiting to weathered metamorphic rocks, dominantly gneiss. Theformation of albic soils used to be attributed to reduction-bleaching of water detained by the impermeable lower part. Nevertheless, pseudo-conformability withinprofiles and lack of reduction phenomena imply that the formation of albic soilswas a discontinuous process, which could be related to Quaternary environmentalchanges.Analyses of particle size, placer minerals and main chemical compositions revealthe discontinuity of sedimentation and pedogenesis between the upper and lowerparts in albic soil-bearing profiles. The surface morphology of quartz grains showsthat the upper part originated from younger sediments and the lower part from older in situ weathered rocks. The TL dating of quartz further shows that the upperwas deposited at the end of the last glacial and the lower part formed in the interglacial period between the Lushan glacial and the Dan glacial. Soils in the upperpart contains abundant ferrugineous concretions, especially at the bottom, consists ofdetrital minerals dominated by hydromica (illite), is weak both in weathering andin differentiation and gelatification. On the other hand, soils in the lower partcontains only a few ferric nodules, consists of clay minerals from illite to kaolinite(in some places, dominated by kaolinite with heamatite), and is varying in weathering and strong in differentiation and gelatification.According to geomorphic data, in combination with our field observation, soils'in the lower part is the erosion residue of paleosols formed during the period ofMiddle Pleistocene to Late Pleistocene. The erosion took place during the end ofLate Pleistocene. Then the residual paleosols was again covered by sediments afterthe last glaciation (soils in upper part). Several pedogenic phases related to Quaternary environment were established in albic soil-bearing profiles:(A) Relatively hot and humid climate and development of red earth beforeabout 130 000 a B. P.;(B) Uplifting and erosion of red earth from 130 000 a B. P. to Late Pleistocene;(C) Warm and humid climate and development of brown earth from 65 000 aB.P.to 45 000 a B. P.,corresponding to Late Pleistocene;(D) Uplifting and differentiated erosion of brown earth from 45 000 a B. P.(the end of late Pleistocene) to 10 000 a B. P.;(E) Cold and dry climate and accumulation of young sediment after about10 000 a B. P.;(F) Warm and wet climate and pedogenesis associated with formation of ferruginous concretions in about 7 500 a B. P.These phases are largely comparable to those main environmental change eventsof Late Quaternary established by other researchers studying North China's loess.Thus, the albic soils in the region was not simply due to pedogenesis but a composite product of pedogenesis together with soil evolution responded to climatic changes

本文从淮北白浆土的剖面二段性出发,根据土壤性质的剖面变化,剖析了这种土壤中存在着的土壤发生间断性,并通过化学成分、粘土矿物组成、铁锰结核的地球化学、土壤薄片及石英颗粒形态、抱粉以及年龄等分析、鉴定和测定,结合土壤与地貌的关系,揭示了这种土壤上、下部土体间不同的发育状态。研究表明,淮北白浆土的形成并非全新世以来某种单一成土过程的结果,而是本区晚第四纪以来不同阶段地貌演变和气候变化造成的土壤演变的外在表现,它还记录了本区多次抬升-剥蚀-堆积-土壤发育的交替演变。

Vegetation in Ziwu mountain secondary forest area undergot destruction by human be-ing and natural restoration The researched result showed that before secondary forest restora-tion,soil in this area was similar to present yellow loess soil With secodary forest restoration。soil gradually developed soil formation process was humification and leaching and soil type e-volved form yellow loess soil to brown forest soil But after forest destruction Because of severely accelerated soil erosion soil profile was gradually...

Vegetation in Ziwu mountain secondary forest area undergot destruction by human be-ing and natural restoration The researched result showed that before secondary forest restora-tion,soil in this area was similar to present yellow loess soil With secodary forest restoration。soil gradually developed soil formation process was humification and leaching and soil type e-volved form yellow loess soil to brown forest soil But after forest destruction Because of severely accelerated soil erosion soil profile was gradually eroded and damaged and soil changed to yel-low loess soil.

子午岭次生林区的植被曾经历了人为破坏过程与自然恢复过程。研究结果表明:次生林恢复前该区土壤类似现在的黄绵土;在植被恢复过程中,土壤发育程度逐渐增强,具有一定的腐殖化过程和淋溶过程,土壤向褐色森林型土壤演变;林地被人为开垦破坏后,加速侵蚀迅速发展导致土壤剖面迅速遭到破坏,土壤向黄绵土演变。

 
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