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   植被格局变化 的翻译结果: 查询用时:0.227秒
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植被格局变化
相关语句
  vegetation pattern change
     In this study, we use remote sensing method to analyze vegetation pattern change owing to the vegetation construction of the watershed during 1987-2003. And we calculate the ecological water use of the main vegetation types and the total watershed with the fieldwork data in 2002. This can provide some scientific gist for proper distribution and sustainable use of local water source and future vegetation construction, comprehensive management of soil erosion and conversion from cropland to forest.
     本研究利用遥感手段分析了皇甫川流域17年(1987~2003)间的植被建设带来的植被格局变化,并结合2002年生长季野外实地观测数据,估算了各主要植被类型的单位面积生态用水量以及流域的植被生态用水总量,为当地水资源的合理分配和可持续利用,以及今后的植被建设、水土流失综合治理和退耕还林(草)工作提供科学依据。 研究结果表明:
短句来源
  changes of vegetation pattern
     Changes of Vegetation Pattern in Manas River Basin over the Last 50 Years
     玛纳斯河流域近50年植被格局变化
短句来源
  “植被格局变化”译为未确定词的双语例句
     Vegetation Patern Changes in Mu Us Desert and the Analysis of Water Income and Expenses
     毛乌素沙地植被格局变化及水分收支平衡分析
短句来源
     Multivariate regression and Canonical Correspondence Analysis (CCA) were applied for contrasting the effects of different environmental factors on the variation of vegetation pattern at 4 scales analyzed.
     并利用多元回归和 DCCA方法比较了诸生境因子对植被格局变化的影响及其与分析尺度相关的变化。
短句来源
     The results are as following: (1)The topographic characteristics are critical for the spatial variations of vegetation.
     结果表明 :( 1 )影响乔木、灌木和草本层植被格局变化的首要因子都是地形特征 ;
短句来源
  相似匹配句对
     Vegetation dynamics and patterns of change in functional protection subzones in Songshan National Nature Reserve,Beijing
     松山自然保护区各功能区植被动态及变化格局
短句来源
     FRACTAL PROPERTIES OF VEGETATION PATTERN
     植被格局的分形特征
短句来源
     The Extraction of Vegetation Information and Its Spatial Pattern Changes in Fuzhou Municipality
     福州市植被信息提取及其景观格局空间变化
短句来源
     Vegetation Variation of Loess Plateau During Human History
     黄土高原历史时期植被变化
短句来源
     Comment on the Post-cold-war World Pattern
     世界格局变化的趋势
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In order to evaluate and constrast the relative effects of topography and other “direct” environmental factors on vegetation, a forest transect of subtropical mountain was sampled along with the habitat factors. The horizontal patterns were analyzed for tree, shrub and herb layers. Multivariate regression and Canonical Correspondence Analysis (CCA) were applied for contrasting the effects of different environmental factors on the variation of vegetation pattern at 4 scales analyzed. The results are as following:...

In order to evaluate and constrast the relative effects of topography and other “direct” environmental factors on vegetation, a forest transect of subtropical mountain was sampled along with the habitat factors. The horizontal patterns were analyzed for tree, shrub and herb layers. Multivariate regression and Canonical Correspondence Analysis (CCA) were applied for contrasting the effects of different environmental factors on the variation of vegetation pattern at 4 scales analyzed. The results are as following: (1)The topographic characteristics are critical for the spatial variations of vegetation. Among the soil Characteristics,soil depth is the most important. (2)Correlations of varied degrees exist not only among the topographic factors except exposure,but also between them,canopy gap,and chemical and physical properties of soil.Shown the topographic controls on gap disturbance and soil erosion. As an integrated reflections of habitat conditions, the relationship between the coverage of tree, shrub and herb layers and abiotic factors showed difference of ecological habits between the understory shrub and herb species. (3)The correlations among the habitat factors are stable on all scales analyzed. However, as the scale enlarges, the microscale habitat heterogeneity is smoothed away, and the prominence of correlation between the factors decreases gradually. (4)From the scale of 5×5m 2 to 5×40m 2,the percentage of interpretation to vegetation variance in tree, shrub and herb layers by the habitat factors increase doubly as the scale doubled. The chief cause for this increase is the number but not the scale of the sampling plots. (5)The interpreted percent of vegetation variance by topography is close to that of all the “direct” habitat factors such as soil properties and light condition. However, comparing with other aspects of habitat factors, topographic properties is the most effective in interpretation of vegetation variations at all analyzing scales. The significance of sampling size and number was discussed on the base of comparison with previous studies.

为了评价和比较地形和其它“直接”环境因子对植被变化影响的大小 ,通过调查一条亚热带山地森林样带及其生境因子 ,分析不同层次植被的水平格局 ;并利用多元回归和 DCCA方法比较了诸生境因子对植被格局变化的影响及其与分析尺度相关的变化。结果表明 :( 1 )影响乔木、灌木和草本层植被格局变化的首要因子都是地形特征 ;最重要的土壤因子是土壤发生层厚度。在对林下物种构成的影响方面 ,坡向和坡度的作用大于林冠空隙度。 ( 2 )除坡向外 ,其它地形因子之间存在不同程度的相关性 ;林冠孔隙度和土壤理化属性分别与不同的地形特征显著相关 ,显示了地形对林隙干扰和土壤侵蚀过程的控制。乔、灌、草的覆盖度是生境条件的综合反映 ;它们与非生物因子的相关性显示了成熟林下灌木和草本层物种生态习性的整体差异。 ( 3)各分析尺度上诸生境因子间的相关关系基本稳定。但随尺度增大 ,生境的小尺度异质性被平滑掉。诸因子之间的相关显著性程度逐渐降低。 ( 4 )从 5× 5 m2到 5× 4 0 m2 ,立地因子对乔、灌、草 3层植被变化的解释量随尺度的倍增而接近成倍增长 ;但其主要原因是样方数量增加 ;分析尺度变化的影响小...

为了评价和比较地形和其它“直接”环境因子对植被变化影响的大小 ,通过调查一条亚热带山地森林样带及其生境因子 ,分析不同层次植被的水平格局 ;并利用多元回归和 DCCA方法比较了诸生境因子对植被格局变化的影响及其与分析尺度相关的变化。结果表明 :( 1 )影响乔木、灌木和草本层植被格局变化的首要因子都是地形特征 ;最重要的土壤因子是土壤发生层厚度。在对林下物种构成的影响方面 ,坡向和坡度的作用大于林冠空隙度。 ( 2 )除坡向外 ,其它地形因子之间存在不同程度的相关性 ;林冠孔隙度和土壤理化属性分别与不同的地形特征显著相关 ,显示了地形对林隙干扰和土壤侵蚀过程的控制。乔、灌、草的覆盖度是生境条件的综合反映 ;它们与非生物因子的相关性显示了成熟林下灌木和草本层物种生态习性的整体差异。 ( 3)各分析尺度上诸生境因子间的相关关系基本稳定。但随尺度增大 ,生境的小尺度异质性被平滑掉。诸因子之间的相关显著性程度逐渐降低。 ( 4 )从 5× 5 m2到 5× 4 0 m2 ,立地因子对乔、灌、草 3层植被变化的解释量随尺度的倍增而接近成倍增长 ;但其主要原因是样方数量增加 ;分析尺度变化的影响小得多。 ( 5 )地形与土壤、光照等直接生境因子对植被格局解释量之和相当。但在不同尺度上 ,地形特征都是

With special ecological structures and functions,alpine timberline,a kind of ecotones highly sensitive to disturbances and environmental changes,has become one of the major concerns in global climate change studies.After reviewing the definitions of alpine timberline,this paper discussed the impacts of disturbances on the reformation of timberline from the aspects of its changes in elevation position,vegetation pattern,species composition,and physiological characteristics.It was suggested that the responses...

With special ecological structures and functions,alpine timberline,a kind of ecotones highly sensitive to disturbances and environmental changes,has become one of the major concerns in global climate change studies.After reviewing the definitions of alpine timberline,this paper discussed the impacts of disturbances on the reformation of timberline from the aspects of its changes in elevation position,vegetation pattern,species composition,and physiological characteristics.It was suggested that the responses of alpine timberline species to disturbances could be basically summarized in two ways:(1) withdrawing: tree species are replaced by new species(usually herbaceous or bushes) after disturbance,and the tree species will withdraw(downward) or disappear;and(2) inbreaking: non-constructive species replace constructive(keystone) species or spread to surrounding area,especially upward along the altitude.The potential increase of timberline resulted from climate warming is compromised to some extend as a result of disturbances.Therefore,distinguishing various disturbances and their effects with climate change is crucial to understanding not only the reformation process of timberline,but also the causes of current vegetation formation in the areas as well.

高山林线是一类典型的生态交错带,因其特殊的结构和功能以及对外界环境的高度敏感性而成为全球气候变化研究的热点之一。本文简要介绍了高山林线的相关概念及其界定,从高山林线海拔位置波动、植被格局变化、生态交错带物种组成变化及其生理生态特征变化等几个方面阐述了干扰对高山林线再形成过程的不同影响,总结了高山林线物种对干扰的两种基本响应方式,即退行和入侵。认为人为干扰在一定程度上弱化了当前气候变暖对高山林线波动的影响,因而在不同地区必须紧密结合当地可能的干扰来讨论高山林线的波动,否则结果有可能因误差较大而失去应有的价值。指出该研究在高海拔地区进行植被恢复的指导意义。

 
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