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陆地土壤
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  terrestrial soil
     Error analysis of estimating terrestrial soil organic carbon storage in China
     中国陆地土壤有机碳蓄积量估算误差分析
短句来源
     Study on Terrestrial Soil Nitrogen Pool in China
     中国陆地土壤氮库研究
短句来源
     Soil is an important component and plays a leading role in global carbon cycling. Therefore, the study on terrestrial soil carbon cycling mechanism and responses to global change are an important foundation of predicting CO_2 content and global change.
     土壤是全球碳循环的重要组成部分,在全球碳循环中起着主导作用,因此研究陆地土壤碳循环机制及对全球变化的响应,是预测大气CO_2含量及全球变化的重要基础。
短句来源
     The calculation results of DC currents through transformer neutrals of HVDC system operated in monopole-ground return mode with the influence of sea considered are evidently different from those calculated by terrestrial soil model.
     考虑海洋影响的直流输电单极大地运行时变压器中性点流过的直流电流与陆地土壤模型计算的结果有很大不同。
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  “陆地土壤”译为未确定词的双语例句
     Estimating soil carbon reservior of terrestrial ecosystem in China
     中国陆地土壤有机碳库的估算
短句来源
     Studying the Chinese terrestrial ecosystem soil nitrogen storage can provide the basic data for studying the terrestrial ecosystem nitrogen cycle, and the emission of soil nitrogen should be considered in future research.
     研究中国陆地土壤氮储量可以为陆地氮循环中的其他环节提供基础数据,并且对研究其对大气N_2O温室气体的排放等都具有重要的意义。
短句来源
     Case study indicated that it is feasible to use the lower limit of rooted plants and the thinning-out point of soil diagnostic horizon to identify wetland lower and upper boundaries. In the study area, the thinning-out line of albic horizon is coincident with the 55.74m contour line, and the maximum horizon error was less than 1m and the maximum vertical error less than 0.04m.
     案例研究表明,利用这两个标准来确定湿地的上、下边界在实践上是可行的,研究区陆地土壤诊断层尖灭线海拔高程为55.74m,最大水平误差小于1m,最大垂直误差小于4cm。
短句来源
     Identification of the let, absorbability and sequestration accurately of the terrestrial ecosystem for CO_2 in different plant processes has important sense to evaluate the source and sink mechanism of soil carbon.
     准确认识陆地生态系统中不同植物过程对碳的排放、吸收和固定的影响,对评价陆地土壤碳的源、汇机制具有重要意义。
短句来源
     In order to inves-tigate the activity contents of ~(90)Sr,~(137)Cs and gross β in soil and sediment,32 soil samples and10 sediment samples were respectively collected from the sites in uniformly distributed net-works of size 20 km×10 km and from the bottom of the rivers in shanghai.
     在全市范围内按20 km×10 km 网格布设陆地土壤调查点32个,并在长江、黄浦江及其支流淀山湖水体调查断面处采集河底泥样品10个。 与沉降物调查点同位采集生物样品(大米、青菜、牛奶、羊肉及鱼等);
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  相似匹配句对
     SOIL ANIMALS AND TERRESTRIAL ECOSYSTEM
     土壤动物与陆地生态系统
短句来源
     Research State of Soil Carbon Cycling in Terrestrial Ecosystem.
     陆地土壤碳循环的研究动态
短句来源
     Machine Proccessing of Remotely Sensed Data and Soil Information Systems and Remote Sensing and Sail Survey
     土壤遥感
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.
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     Modeling Terrestrial Ecosystems
     陆地生态系统的模型模拟
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  terrestrial soil
Terrestrial soil diatom assemblages from different vegetation types in Zackenberg (Northeast Greenland)
      
A community analysis consisting of the species diversity and species similarity of the aquatic and terrestrial soil fauna was executed in these forests.
      
Epiphytes had lower δ15N values (-3.9±2.3‰) than ground-rooted trees (-1.1±1.6‰), and canopy soil had lower values (0.7±1.2‰) than terrestrial soil (3.8±0.7‰).
      
The presence of similar VAM fungal spores in the aquatic sediments and terrestrial soil suggests that they probably enter the aquatic sediments through run off from the land ecosystem.
      
The microbial loop concept as used in terrestrial soil ecology studies
      
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The geochemistry of Cu,Pb,Zn,Cr,Co, and Ni in sediments and interstitial waters in the fer-romanganese noduleenriched region of northern Pacific is discussed in the present paper. The results show that the contents of Cu, Pb, Zn, Co, and Ni in the sediments are obviously higher than those in fresh-water, estuary and continental shelf sediments as well as in ferromanganese nodule-poor regions but 1-2 orders of magnitude lower than in ferromanganese nodules from the same region. The contents and distribution of...

The geochemistry of Cu,Pb,Zn,Cr,Co, and Ni in sediments and interstitial waters in the fer-romanganese noduleenriched region of northern Pacific is discussed in the present paper. The results show that the contents of Cu, Pb, Zn, Co, and Ni in the sediments are obviously higher than those in fresh-water, estuary and continental shelf sediments as well as in ferromanganese nodule-poor regions but 1-2 orders of magnitude lower than in ferromanganese nodules from the same region. The contents and distribution of these metals are closely related with the types of sediments. Cu, Zn, Cr, Co, and Ni exist mainly in fine materials and are controlled by oxides of iron and manganese, while Cu, Zn, and Co exist in part as organic compounds and Pb exists largely as oxides of iron and manganese, carbonates and organic compounds. Cu2 + and Zn2+ in interstitial waters resulted mainly from the degradation of organic matter in the sediments and Co2+ was derived from the degradation of organic matter and the dissolution of siliceous bio-shells. Pb2+, Ni2+ and Cr2+ in interstitial waters resulted probably from the soaking action of high-pressure, weakly acidic seawater.

对北太平洋28个相对富集铁锰结核的沉积物和间隙水中重金属元素(Cu、Pb、Zn、Cr、Co、Ni)地球化学研究表明:沉积物中重金属元素明显的比陆地土壤、河口、陆架及贫结核洋区的沉积物富集,并与沉积物类型密切有关;沉积物中元素的赋存状态不同,进入间隙水的途径不同;由于Cu、Co的生物作用大于Zn、Ni,使沉积物中 Cu/Zn、Co/Ni比值由钙质软泥—钙、硅软泥—硅质软泥—褐色粘土升高。

This paper reports the results and methods for investigation of environmental arti-ficial radioactivity level in shanghai from 1989—1991.In 11 selected areas of the city and itssuburbs,~(9O)Sr,~(137)Cs and long life gross β-activity concentrations in airasol were investigated.15 sample sites in various waters were laid out and 45 water samples were collected in wetand dry seasons for the investigation of ~(90)Sr,~(137)Cs,~3H and gross β-activity.In order to inves-tigate the activity contents of ~(90)Sr,~(137)Cs...

This paper reports the results and methods for investigation of environmental arti-ficial radioactivity level in shanghai from 1989—1991.In 11 selected areas of the city and itssuburbs,~(9O)Sr,~(137)Cs and long life gross β-activity concentrations in airasol were investigated.15 sample sites in various waters were laid out and 45 water samples were collected in wetand dry seasons for the investigation of ~(90)Sr,~(137)Cs,~3H and gross β-activity.In order to inves-tigate the activity contents of ~(90)Sr,~(137)Cs and gross β in soil and sediment,32 soil samples and10 sediment samples were respectively collected from the sites in uniformly distributed net-works of size 20 km×10 km and from the bottom of the rivers in shanghai.At the same lo-cations as previously used in deposition,the concentration of ~(90)Sr,~(137)Cs and gross β-activityin rice,cabbage,fish,lamb,milk Were also investigated. The results show that the environmental artificial radioactivity level in Shanghai is thesame as that in normal background areas.The annual individual effective dose were estimat-ed to be 1 μSv resulted from ~(90)Sr,~~(137)Cs,~3H in foods and drinking water and 0.92μSv from~(137)Cs in soil.They were 0.12% and 0.11% of that from natural penetrating radiation,re-spectively.

本文报道了1989—1991年上海市环境(包括大气、水体、土壤和生物)中~(90)Sr、~(131)Cs 和~3H 放射性水平调查的方法和主要结果。本次调查在市区和郊县共设11个点,采集气溶胶样品;以黄浦江为重点对各类水体(长江上海段、苏州河、宝钢水库、淀山湖及自来水)共设15个调查点,采集枯、丰两水期水样45个;在全市范围内按20 km×10 km 网格布设陆地土壤调查点32个,并在长江、黄浦江及其支流淀山湖水体调查断面处采集河底泥样品10个。与沉降物调查点同位采集生物样品(大米、青菜、牛奶、羊肉及鱼等);测量项目为~(90)Sr、~(137)Cs 和总β放射性浓度或含量;对于水体,还测量了~3H 浓度;对于气溶胶,所测总β放射性浓度为长寿命核素。调查结果表明,上海市环境中~(90)Sr、~(137)Cs 和~3H 放射性均属正常本底;由饮食摄入~(90)Sr、~(137)Cs 和~3H 所致的人均年有效剂量为1μSv,由土壤中~(137)Cs 外照射引起的居民人均年有效剂量为0.92μSv,分别为全国天然贯穿辐射所致我国居民人均年有效剂量的0.12%和0.11%。

We developed a floating soilless culture system (FSCS) for growing (ornamental) plants on water surface in the West Lake, the scenic spot in Hangzhou, China. The system contains the foam plastic plate with planting holes fdled with plastic sponge as medium and slow-release complex fertilizer dressed in holes regularly (Fig. 1 and 2). Twenty eight species including annual, biennial and perennial herbaceous, woody, and water plants were tested. Among them, 7 species—common garden canna (Canna generalis), umbeila...

We developed a floating soilless culture system (FSCS) for growing (ornamental) plants on water surface in the West Lake, the scenic spot in Hangzhou, China. The system contains the foam plastic plate with planting holes fdled with plastic sponge as medium and slow-release complex fertilizer dressed in holes regularly (Fig. 1 and 2). Twenty eight species including annual, biennial and perennial herbaceous, woody, and water plants were tested. Among them, 7 species—common garden canna (Canna generalis), umbeila palm (Cyperus alternifolius), large-flower daylily (Hemerocallis middendorffii), Japanese iris (Iris kaempferi), China rose (Rosa chinensis), flowering quince willow (Salix chaenomeloides), and longbract cattail (Typha angustata) were excellently and 13 species—cockscomb (Celosia cristata), garden balsam (Impatiens balsamina), Africa marigold (Tagetes erecta), French marigold (Tagetes patula), common zinnia (Zinnia elegans), barbados-lily (Amaryllis vittata), New York aster (Aster novi-belgii), bracket-plant (Chloraphytum elatum), common dayflower (Commelina communis), gladiolus (Gladiolus hybridus), red flower woodsorrel (Oxalis rubra), common garden verbena (Verbena hybrida), and golden St. Johnswort (Hypericum patulum) were well adopted to the environment of FSCS on water surface with normal growth and blossom (Table 1). Compared to those grown on soil, the plants grown on FSCS on water surface were shortened with bigger flowers (Table 2). These results suggested the FSCS have a good potential practical value in landscape design. We also studied the proper transplant date (Table 3) and the thickness of the foam plastic plate (Fig. 3) and suggested the suitable diameter and density of the planting holes in foam plastic plate for different ornamental plants (Table 4).

以泡沫塑料板为浮体,海绵为基质,缓效多元复合肥为养分,在杭州西湖水面对多种花卉进行无土漂浮栽培试验,已移栽和直播成活花卉20种:其中完全适应水面无土漂浮栽培的花卉7种(美人蕉、旱伞草、大花萱草、花菖蒲、月月红、河柳、香蒲),基本适应的13种(鸡冠花、凤仙花、万寿菊、孔雀草、百日草、朱顶红、荷兰菊、吊兰、鸭跖草、唐菖蒲、红花酢浆草、美女樱、金丝梅);它们都能在水面正常开花。与陆地土壤栽培相比,水面无土漂浮栽培的花卉有株体矮化、花径较大的特点,在园林景观配置中有较大实用价值。我们还对水面无土漂浮栽培花卉适宜的移栽期以及浮体厚度与种值孔的大小和密度进行了研究。

 
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