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   土壤生态系统 在 环境科学与资源利用 分类中 的翻译结果: 查询用时:0.676秒
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土壤生态系统
相关语句
  soil ecosystem
    DISSIPATIVE STRUCTURE THEORY AND SOIL ECOSYSTEM
    耗散结构理论与土壤生态系统
短句来源
    The Analyses on Fujian's Paddy Soil Ecosystem by Dissipative Structure Theory
    用耗散结构理论分析福建稻田土壤生态系统
短句来源
    Influence of Human Activity on Soil Ecosystem
    人类生产活动对土壤生态系统的影响
短句来源
    Acid rain and soil ecosystem
    酸雨与土壤生态系统
短句来源
    Enrichment and toxicity effect of heavy metals in soil ecosystem.
    重金属在土壤生态系统中的富集及毒性效应
短句来源
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  soil ecosystems
    ON BASIN—VALLEY SOIL ECOSYSTEMS OF EASTERN MOUNTAIN AREA IN JI LIN PROVINCE
    试论吉林省东部山地的盆谷地土壤生态系统
短句来源
    REGIONAL DIVISION OF THE RELATIVE SENSITIVITY OF SOIL ECOSYSTEMS TO ACID DEPOSITION IN HUNAN
    湖南土壤生态系统对酸沉降的相对敏感性区划
短句来源
    1. It was observed that P was surplus in the agricultural soil ecosystems in the Taihu Lake region.
    1、太湖地区农田土壤生态系统中的P素平衡状况表现为盈余。
短句来源
    The vertical changes of basin-valley soil ecological environm- ents of eastern mountain area in Jilin Provinde lead to the soil ecosystems' changes,that make them appear as different soil ecological unitis according to the relief's difference from the low region to the high region.
    吉林省东部山地中的盆谷地土壤生态环境的垂直分化,导致了盆谷地土壤生态系统按地形从低到高依次分化为不同的盆谷地土壤生态单元:盆谷地河漫沼泽土生态单元; 盆谷地阶地草甸土生态单元;
短句来源
    Each soil ecological unit of the basin-valley soil ecosystems has its own particular local climates,relief conditions,soil typ- es and resource advantages,therefore,it has a different develop- ing direction from the others'.
    盆谷地中山棕色针叶林土生态单元。 盆谷地土壤生态系统的各个土壤生态单元分别具有各自的地方气候、地形条件、土壤类型和资源优势,因此它们有着不同的经营方向。
短句来源
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  “土壤生态系统”译为未确定词的双语例句
    Buffer action to rice-soil ecosystem to Cu and As pollution
    水稻-土壤生态系统对Cu、As污染的缓冲作用
短句来源
    The transportation and accumulation-disappearance of HTO in the tea-soil ecosystem
    茶树-土壤生态系统中HTO的迁移与消长动态
短句来源
    Positive relativity among the fluxes of NO2 and CH4 and CO2 and the air temperature andthe moisture of soil appeared when air temperature exceeds 25℃ and soil moisture exceeds20%.
    旱田植物—土壤生态系统的CH4、N2O和CO2的排放与气温、土壤湿度有相关性,在温度达到25℃及湿度20%以上时呈显著的正相关性。
短句来源
    the fluxes of CO2 is more than CH4 and N2O on the plant-soil systems of farmland, sothe plant-soil systems of farmland is the releasing-sources of CO2 and the lowreleasing-sources of CH4 and N2O.
    旱田植物—土壤生态系统对CO2的排放量明显高于CH4和N2O的排放,是CO2的显著源,是CH4和N2O的微弱源。
短句来源
    The Migration and Distribution of Tritium Water in Chinese Cabbage(Brassica chinensis)-Soil Ecosystem
    青菜-土壤生态系统中氚水的迁移与分布动态
短句来源
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  soil ecosystem
The smallest amount of fungi (54-59%) is found in the arable soil ecosystem.
      
Tillage affected nematode communities in the soil ecosystem by changing the trophic structure and gave a decreasing, but not statistically significant, trend in MI.
      
Most caecilians are thought to be generalist predators of soil ecosystem engineers (earthworms, termites and ants), but it has been suggested that members of the East African genus Boulengerula are specialist predators.
      
To analyse nematode community structures appropriately for the evaluation of soil ecosystem status and function requires information on the life history traits of K-strategic nematodes.
      
The purported benefits of conservation tillage and continuous cropping in agricultural systems include enhancement of soil ecosystem functions to improve nutrient availability to crops and soil C storage.
      
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  soil ecosystems
The Antibiotic-Aided Distinguishing of Fungal and Bacterial Substrate-Induced Respiration in Various Soil Ecosystems
      
Antarctic soil ecosystems are amongst the most simplified on Earth and include only few soil arthropod species, generally believed to be opportunistic omnivorous feeders.
      
Development of methods to measure the effect of man's residuals on soil ecosystems is desirable.
      
Earthworms, as one of the largest and most easily obtained components of the soil biota, are suitable for evaluating perturbations to soil ecosystems.
      
Overestimates of microbial biomass and high maintenance rates have caused calculations of annual maintenance requirements to exceed annual C inputs to soil ecosystems.
      
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This paper presents a kind of model on soil environmental capacity according to the stability of soil ecosystem. The models characterize the influence of pollutants upon the components of the ecosystem and the relations among the components. The models include the original equiratio series model as a special case.

本文从生态学观点出发,根据对土壤生态系统稳定性的认识,提出一种关于土壤环境容量的结构模型,为容量模型研究探索了一条新的道路。该模型的特点是考虑到污染物对系统中各组分的影响及组分之间的相互关系,从而使模型研究开始涉及容量问题的实质。本模型并把已有的关于土壤环境容量的等比级数模型作为一种特例包括在内。 本文还列举了在北京东南郊土壤系统实际研究中应用该模型的计算过程及所得的若干结果。

A survey of heavy metal pollution on soil ecosystem was made and reduction of soil productivity was used as an important sign of stability damage of soil ecosystem in working out of the soil capacity.

本文通过重金属对农作物、土壤微生物、土壤动物的影响试验,探索了重金属污染对土壤生态系统的综合影响,并以土壤生产力(农作物产量)的降低作为土壤生态系统稳定性受到破坏的主要标志拟定土壤容量。 在建立土壤容量的数学模式上,利用图论工具建立了土壤容量的结构模型,将已有的等比级数的模型作为一个特例包括在内,为土壤容量模型的研究探索了一条新途径。 本文以As为重点,提出了北京地区农田土壤中As、Hg、Cd、Cr的土壤容量范围值,并对污染发展趋势进行了预测,为北京地区环境质量的控制与治理提供依据。

We engaged in study of the background values of Cr and Hg element of differnt soil subgrounds of main natural soil in Thousand-Mountains (brown forest soil), and carried out the investigation of environment about them. In all measuring the number of the sample specimen was fourty-eight, and that of the soil profiles was twenty-four. The variation of Cr and Hg elemen's content in differet soil subground sample was investigated. All of measured values are processed by method of mathematical statistes. T-distribution...

We engaged in study of the background values of Cr and Hg element of differnt soil subgrounds of main natural soil in Thousand-Mountains (brown forest soil), and carried out the investigation of environment about them. In all measuring the number of the sample specimen was fourty-eight, and that of the soil profiles was twenty-four. The variation of Cr and Hg elemen's content in differet soil subground sample was investigated. All of measured values are processed by method of mathematical statistes. T-distribution of profile of surface soil and profoundal zone, deletting the abnormal mean of eight sample specimen. The soil background value was expressed by arithemetic mean plus and subtract one time's standard deviation. According to rnatriarehal type, soil type and organic substance's accumulation etc., we inquired into an affect on the background value.

本工作对千山主要自然土壤(棕壤)不同土壤亚类中的Cr、Hg两种元素的背景值进行了研究,并对千山的环境地理作了调查,共采样测定43个样点,24个土壤剖面。研究了不同亚类土壤中Cr、Hg的含量分布差异性,所有测定值都进行了数理统汁,检验了剖面表士层及低土层的t分布规律,剔除异常值8个样点。土壤背景值用算术平均值加减一倍标准差表示。并根据母质类型、土壤类型、有机质累积等探讨了对背景值的影响。土壤背景值,是指不受外来污染情况下土壤的基本化学组成或元素含量。土壤的元素组成取决于土壤形成条件,成土母质和土壤类型。由于成土母质的多样性及成土过程的复杂性,使得不同地区发育了不同类型和性质的土壤,因而土壤背景值也就有明显的区域性。研究千山不同土壤亚类中Cr、Hg元素的背景值含量,不仅为判断该地区土壤是否遭受污染、污染程度及各土壤亚类元素含量的差异原因,而且也是评价环境质量,进行污染预报,制定环境标准,保护土壤生态系统不可缺少的基本数据。

 
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