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变异特征
    Analysis on Vertical Variation Characteristic of Soil Percolating Water in Yellow Soil Sloping Field
    黄壤坡地土壤水分入渗垂直变异特征分析
    Analysis of vertical variation characteristic of soil moisturein yellow soil sloping field
    黄壤坡地土壤水分垂直变异特征分析
    They are equal to appear a similar variation characteristic which is above-mentioned, at different carbon source and nitrogen source or different proportion of carbon-nitrogen culture for M_(337).
    其中M_(337)在不同碳、氮源以及不同碳氮比的培养基上均表现出上述类似的变异特征
    The space variation characteristic of different layer soil organic matter and total nitrogen is different, but the structure factor plays a leading role in the space variation of full nitrogen and organic matter.
    不同层次土壤有机质与全氮的空间变异特征具有一定的差异 ,但结构性因素对有机质与全氮的空间变异起主导作用。
    Variation characteristic of salinization components in water environment of Song-Nen plain west
    松嫩平原西部水环境中各盐碱化成分的变异特征
    According to the Shizi small watershed's soil erosion space variation characteristic,the geostatistics method analysis indicated,the erosion in the area is on belt distributing. Its variant characteristic is similar to the topography distribution and land use structure distributing characteristic.
    根据研究区璧山县狮子小流域的土壤侵蚀空间变异特征,应用地统计学方法分析结果表明,土壤侵蚀在西北-东南方向呈现明显的自相关性和方向变异性,其变异性特征与研究区域的地形地貌分布特征及土地利用结构分布特征一致。
    By monitoring the soil moisture in different layers (20cm) of soil profile (0-200cm) with different vegetation cover types in loess area during 2004 (from July to October) and 2005 (from April to October), the paper focus on analyzing the distribution characteristics, the season dynamic state variety, the variation characteristic of soil moisture of soil profile and the influence of the different vegetation cover types upon the soil moisture.
    通过对2004年7—10月、2005年4—10月不同植被类型土壤剖面水分状况的监测,分析研究黄土区剖面土壤水分的分布特征、季节动态变化、变异特征和不同植被类型对剖面土壤水分状况的影响。
    Objective To investigate the variation characteristic of human immunodeficiency virus type-1(HTV-1) subtype B' vif gene in China and to discuss the relationship with HIV transmission and pathogenicity. Methods We collected peripheral blood of HIV infected individuals in Henan province.
    目的研究人免疫缺陷病毒-1(HIV-1)B'亚型vif基因的变异特征,探讨其与HIV传播和致病性之间的关系。
    Based on classic theory of geo-statistics,the authors analyze the variation characteristic of groundwater mineralization degree in time and space in view of different periods and different geomorphic units in Kaikong river basin,and reveal the rule of groundwater content salt spario-temporal variation.
    以地统计学经典理论分析了开孔河流域不同时期和不同地貌单元地下水矿化度在时间和空间的变异特征,揭示其浅层地下水含盐量的时空变异规律。
 

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