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马尾松群落
相关语句
  masson pine community
     QUANTITATIVE CLASSIFICATION OF MASSON PINE COMMUNITY AT NAN MOUNTAIN IN CHONGQING
     重庆南山马尾松群落的数量分类研究
短句来源
     Study on the Niche of Masson Pine Community in Northern Fujian
     福建北部马尾松群落生态位的研究
短句来源
     Study on Conservation Capacity of Water in Masson Pine Community among Closed Forest
     封山育林的马尾松群落水源涵养功能研究
短句来源
     Studies on the structure and improving techniques of the masson pine community in Longdong River Valley
     龙洞河流域马尾松群落结构及改造技术的研究
短句来源
     The results conformed the natural law, so it could provide theoretical basis for studing the stability, succession and spatial pattern of masson pine community in northern Fujian, and practical guadance for its management.
     研究表明:通过定量的生态位分析,结果与自然规律相符合,有一定适用性,能作为进一步研究福建北部马尾松群落稳定性、演替、空间分布格局的理论基础,并对生产实践具有一定参考价值.
短句来源
  “马尾松群落”译为未确定词的双语例句
     The litterfall of PIM 'was the largest . amounted to 8850.56 kg hm-2 yr-1; CUL, the smallest ,4631.08 kghm-2yr-1.The components of litter were of the most complexity.
     马尾松群落凋落物量最大,为8850.56 kg·hm~(-2)·yr~(-1),杉木人工林最小,为4631.08 kg·hm~(-2)·yr~(-1)。
短句来源
     the different biodiversity indices in the four communities were alse different ^specially the R,H,E in Pinus massoniana community were highest;
     多样性分析结果表明,不同群落的各种指标表现差异较大,群落多样性整体比较分析得马尾松群落的R、H、E均高于其它三群落;
短句来源
     Study on the Ways of Recover and Restoration for Degraded Community of Pinus massoniana
     退化马尾松群落恢复与重建途径的研究
短句来源
     Study on the Origin of Pinus massoniana Community of Karst Areas
     岩溶地区马尾松群落成因研究
短句来源
     The results showed that in terms of woody plant,the species richness of Heptacodium miconioides community was bigger than those of Pinus massoniana and Castanopsis eyrei communities,but smaller than that of Fraxinus insularis community.
     结果表明,对木本植物而言,七子花群落的物种丰富度比马尾松群落、甜槠群落大,比苦枥木群落小;
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  相似匹配句对
     community.
     群落
短句来源
     to their species association coefficients of X~2 statistics.
     2.马尾松、(?) 木、苦槠群落阶段;
短句来源
     Study on the Niche of Masson Pine Community in Northern Fujian
     福建北部马尾松群落生态位的研究
短句来源
     THE MOSS PLANT COMMUNITIES IN THE QINLING RANGE OF CHINA
     秦岭藓类植物的群落
短句来源
     Pinus massoniana is one of the most important material trees for nursing, which can be used to built architecture, to make paper and veneer etc.
     马尾松(Pinus massoniana L.)
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Recent observations were made to investigate the microclimate in

近年来曾对广东鼎湖山亚热带森林群落的小气候进行了一些间断地观测,根据观测资料的分析,初步获得下列一些结果: 1.华南亚热带森林群落内的光条件与旷地相较,无论在质和量上都有显著的差异,林阴下的光强度仅及旷地的1—20%,同时在光谱成分上红光的比例增强。而林内光点强度除与从树冠隙缝到地面的距离成反比外,并与光点直径(或面积)的大小成正比。 2.华南亚热带森林群落内的温度条件,无论是夏季或是冬季,其平均值均低于旷地,而不同于一般教科书所指的“林内温度夏季低于而冬季高于旷地”的规律性。 3.华南亚热带森林群落内的湿度条件,无疑地均优于旷地,同时,林内绝对湿度的日变化曲线多呈单峰型。 4.华南亚热带森林群落内的小气候与旷地相较,其特点是:弱光、低温、高湿,变幅小而较稳定,大气温度的垂直梯度变化规律与旷地相反。唯马尾松群落的小气候特点即类似于旷地。 5.华南亚热带不同森林群落小气候条件的差异,主要取决于森林群落的种类组成和结构状态。马尾松群落由于种类组成和结构上的简单和稀疏,其小气候特点则类似于旷地,而其他群落则由于种类和结构上的复杂,而创造了有异于旷地的独特的小气候条件。因而,对亚热带森林群落小...

近年来曾对广东鼎湖山亚热带森林群落的小气候进行了一些间断地观测,根据观测资料的分析,初步获得下列一些结果: 1.华南亚热带森林群落内的光条件与旷地相较,无论在质和量上都有显著的差异,林阴下的光强度仅及旷地的1—20%,同时在光谱成分上红光的比例增强。而林内光点强度除与从树冠隙缝到地面的距离成反比外,并与光点直径(或面积)的大小成正比。 2.华南亚热带森林群落内的温度条件,无论是夏季或是冬季,其平均值均低于旷地,而不同于一般教科书所指的“林内温度夏季低于而冬季高于旷地”的规律性。 3.华南亚热带森林群落内的湿度条件,无疑地均优于旷地,同时,林内绝对湿度的日变化曲线多呈单峰型。 4.华南亚热带森林群落内的小气候与旷地相较,其特点是:弱光、低温、高湿,变幅小而较稳定,大气温度的垂直梯度变化规律与旷地相反。唯马尾松群落的小气候特点即类似于旷地。 5.华南亚热带不同森林群落小气候条件的差异,主要取决于森林群落的种类组成和结构状态。马尾松群落由于种类组成和结构上的简单和稀疏,其小气候特点则类似于旷地,而其他群落则由于种类和结构上的复杂,而创造了有异于旷地的独特的小气候条件。因而,对亚热带森林群落小气候的研究,无论在理论上或实践上都具有重大意义。

The data of density and abundanceof the plant species from three communities in Dinghu Shan forest were used as the ecological information for the pattern analysis and the association analysis. The four methods of pattern analysis, Greig-Smith's(1952) pattern analysis, Kershaw's (1970) intensity analysis, Hill's(1973)two-term local variance analysis, and spectral analysis, were applied to describe and indicate the population pattern of the tree, shrub species. The other three methods of association analysis,...

The data of density and abundanceof the plant species from three communities in Dinghu Shan forest were used as the ecological information for the pattern analysis and the association analysis. The four methods of pattern analysis, Greig-Smith's(1952) pattern analysis, Kershaw's (1970) intensity analysis, Hill's(1973)two-term local variance analysis, and spectral analysis, were applied to describe and indicate the population pattern of the tree, shrub species. The other three methods of association analysis, joint analysis and covariance analysis(Kershaw, 1900), correlation analysis(Austin, 1968)were utilized to explore the interspecific association of the representative species in three communities. The comparisons between the methods that had been used were made in this paper. The pattern analysis are very useful for separating the intensity, scale and grain of the pattern and indicating the patchiness of horizontal dispersion of plant population. Of the four methods, the Greig-Smith's and the Hill's are appropriate for the utility in the lower subtropical forest, especialy being applied cooperatively. It had been found from the analysis graphs that Kershaw's not only has no suitable statistics-test but also reduces the peak values. The spectral analysis has some advantages of describing the pattern, but no enough evidence to prove its efficiency for a small number of the samples. The association analysis gave some interesting results from which the reasons of interspecific association could be deduced. The positive association is the fruit either of the similar responses of two species to the environmental factors or of the dominants pattern being exerted on another species. The negative association is the consequence either of the variant responses of two species to the environmental factors or of the automatic division of the horizontal spaces occupied by two high density species, The appearances of the association between plant species could not be restricted by the block size and the type of pattern. Among the three methods that had been used the joint analysis is the best one not only for its clear graph but also for its statistical significance. Doubulessly, all the analyzing methods used in this paper, have played the important role on the advance researches of the plant species space distribution, in particular, on showing the patchiness and the mosaic of the plant population individuals.

分布格局分析与联结分析是研究植物群落空间分布及结构的重要方法。本文以鼎湖山自然保护区马尾松群落,马尾松阔叶树混交林群落和厚壳桂森林群落为对象,选择22个主要的乔木、灌木、藤本种群,应用Greig-Smith分布格局分析、Kershaw强度分析。Hill二项局部方差分析和谱分析等四个分布格局分析方法及结合分析、协方差分析和相关分析等三个联结分析方法,描述和指示了植物种群水平分布的斑块性及种群之间在空间分布上的相互关系;并进一步从统计处理和实用范围等方面比较了各方法的合理性及有效性。研究表明,分布格局分析对于南亚热带森林植物种群分布格局强度与规模的分离是有效的。其中Greig-Smith方法有一定的适应性,并可通过与Hill方法的结合应用使其缺陷得以补偿;而谱分析方法更适用于大样本的分析。联结分析中,只有少数种间发生正或负的联结;三个方法各具特点,尤以结合分析在计算上和图示上为佳。

Based on the mathmatical methods and computer technology, the paper deal with the succession of Pinus massoniana communities on the natural condition in the mountains of northern Fujian Province, China, based on samples from 82 10×10m~2 plots and 320 2×2m~2 plots. Successional stages of all species in the area were divided into three groups:failing, transition and progressing according. to their species association coefficients of X~2 statistics. The sere was reconstructed and the five stages were defined from...

Based on the mathmatical methods and computer technology, the paper deal with the succession of Pinus massoniana communities on the natural condition in the mountains of northern Fujian Province, China, based on samples from 82 10×10m~2 plots and 320 2×2m~2 plots. Successional stages of all species in the area were divided into three groups:failing, transition and progressing according. to their species association coefficients of X~2 statistics. The sere was reconstructed and the five stages were defined from the result of the relative important value of the three groups with the division method of optimization.

本文以闽北山区自然状态下马尾松群落的进展演替过程为代表,讨论了定量划分群落演替阶段的方法。首先从分析树种关联、确定演替种组入手,重构其群落的演替系列,在此基础上采用有序样本的最优分割法将演替过程划分成五个演替阶段,即1.马尾松纯林阶段;2.马尾松、(?)木、苦槠群落阶段;3.亮叶腊梅、马尾松、米槠群落阶段;4.米槠、黄瑞木、青冈群落阶段;5.少叶黄杞、细柄阿丁枫、米槠群落阶段。划分结果较真实地反映了马尾松群落向中生性稳定群落的发展过程,克服了主观判断划分方法的缺陷,在定量的水平上处理群落演替阶段的划分问题。

 
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