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指示意义
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  indicative significance
    Evergreen Broad-leaved Woody Plant in Qingdao andits Indicative Significance
    青岛常绿阔叶木本植物及其指示意义
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    According to the climate characteristics of Qingdao and its surrounding area and possible impact of global climate change, the indicative significance of evergreen broad leaved woody plant is discussed.
    根据青岛及其周边地区气候特征,考虑全球气候变暖的可能影响,论述了常绿阔叶木本植物的指示意义.
短句来源
  indicative significance
    Evergreen Broad-leaved Woody Plant in Qingdao andits Indicative Significance
    青岛常绿阔叶木本植物及其指示意义
短句来源
    According to the climate characteristics of Qingdao and its surrounding area and possible impact of global climate change, the indicative significance of evergreen broad leaved woody plant is discussed.
    根据青岛及其周边地区气候特征,考虑全球气候变暖的可能影响,论述了常绿阔叶木本植物的指示意义.
短句来源
  “指示意义”译为未确定词的双语例句
    THE INDICATING SIGNIFICANCE OF UNDERSTORY IN CHINESE FIR PLANTATION TO SITES
    杉木人工林林下植被对立地的指示意义
短句来源
    A STUDY ON THE δ13C VALUES OF TREE RINGS AND THEIR INDICATIVE FUNCTIONS IN REVEALING ATMOSPHERIC CO2 CHANGES IN NORTH CHINA
    树木年轮δ~(13)C值及其对我国北方大气CO_2浓度变化的指示意义
短句来源
    The result shows that TWINSPAN method is also suitable for mixed forest classification and can indicate gradient of time and space in the process of mixed forest succession to some extent.
    表明,TWINSPAN同样适用于混交林的分类和排序,对混交林演替过程的时空梯度有一定指示意义
短句来源
    On the basis of field investigations,the timberline range of Beitai,the Xiaowutai Mountains was carved up, and the changes in the makeup and diversity of plants with the altitude were discussed.
    在野外调查的基础上 ,对小五台山林线的范围进行了划分 ,探讨了林线附近植物种类组成和多样性随海拔高度的变化 ,并对林线及其附近分布的主要乔木树种的气候指示意义进行了分析 .
短句来源
    The definition of FWI components is given for Beijing forest fire danger rating on the basic of analysis of the indexes distribution.
    分析FWI系统各组分的数值分布特征,确定了北京地区FWI各指数的等级划分及其指示意义
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  indicative significance
Redistribution of REEs during metamorphism and its indicative significance for fluid processes
      
Multi-scale expression of spatial activity anomalies of earthquakes and its indicative significance on the space and time attrib
      
  indicative significance
Redistribution of REEs during metamorphism and its indicative significance for fluid processes
      
Multi-scale expression of spatial activity anomalies of earthquakes and its indicative significance on the space and time attrib
      


Methods of soil and vegetation survey generally used for forest trees in mountainous areas are considered inapplicable to poplars growing as scattered trees on the levelland. In the present paper, therefore, a method catering for this purpose together with the result of its application to poplar sheltabelts in East Honan is presented. In soil survey, besides detailed profile descriptions, field determinations of important soil properties, including water permeability, volume weight, moisture content, texture,...

Methods of soil and vegetation survey generally used for forest trees in mountainous areas are considered inapplicable to poplars growing as scattered trees on the levelland. In the present paper, therefore, a method catering for this purpose together with the result of its application to poplar sheltabelts in East Honan is presented. In soil survey, besides detailed profile descriptions, field determinations of important soil properties, including water permeability, volume weight, moisture content, texture, ground water table and composition, thickness and depth of clay layer, pH value, available N and available P have been obtained. All the data are later annalysed and interpreted from two rather different but complementary approaches. On the first hand, by the calculation of correlation coefficient, correlation between height growth of Populus pyramidalis and ground water tables is found to be significant (r=0.458 P<0.05), and correlation between height growth of this species and volume weight of soil at root-concentrating horizon highly significant (r=0.804 P<0.01). But correlation coefficient between height growth of the same species and all other studied soil properties fall below the significant leyel generally adapted i.e. 5% level. Secondly, on the comparative study of field determinations of soil properties and height measurements of this species, ground water tables with reference to tree heights are divided into 3 classes, soil textures 4 classes, pH values (at root-concentrating horizon) 3 classes, and volume weights 3 classes respectively. In vegetation survey, qualitative investigations are carried out following the ZurichMontpellier School's procedures with but a few modifications, and total estimation, sociability, aspect, life form, root system and plant height are recorded. Also, point quadrat method is employed to collect quantitative data such as cover and frequency. Populetum pyramidalise association is classified into two subassociation:P. Pyr. Imperata cylindrica subassociation and P. Pyr. Imperata cylindrica var. major subassociation respectively. The latter is further classified into Lactuca variant and typical variant. To the above-mentioned plant community units and their respective differential species, a weighted mean of the class value with respect to each soil property is calculated separately. On this basis their indicating values to the growth of the tree are interpreted. Meanwhile, quantitative criteria of soil properties and a list of plant indicators (including individual species and community units) for the choice of planting sites of Populus pyramidalis in the studied area are given. Lastly, merits and demerits of the present method are discussed.

大多数杨树为平地散生树种,一般山地森林土壤与植被的调查方法不完全适用。本文介绍了一种野外调查与分析材料的方法,以及在河南睢杞林埸,试用于美杨(防护林带为主)的结果。调查土壤时,除剖面调查外,并对一些土壤特性,其中包括透水性、容重、土壤水分、地下水(水位与水质)、质地、粘质层(深度与厚度)、pH值、铵态氮、速效P_2O_5进行了野外观测。观测结果采用了两种分析方法:一方面采用相关系数的统计方法,计算结果,地下水位与美杨树高生长的相关显著=0.458,P<0.05),根系集中层容重与美杨树高生长的相关极显著=0.804,P<0.01),其余土壤特性与美杨树高生长的相关均低于统计学上的一般显著标准;另一方面从理论与野外观测的结果,将地下水位分为3级,质地4级,粘质层3级,透水性3级,pH值(根系集中层)3级,容重3级,并分别找出了各级美杨的树高生长情况。植被稠查分估舒描远(质的稠查)与数量航箭二种,前者主要采用法瑞学派的方法,稠查填目舒有:总估舒度、攀度、物候相、生活型、根系、高度等填;后者采用点样法,点样法架用薄木板与铁杆做成,稠查杭舒盖度与频度二稠。美福拿丛按区别种分为二个亚拿丛:印度白茅亚拿丛与中国白茅亚拿丛...

大多数杨树为平地散生树种,一般山地森林土壤与植被的调查方法不完全适用。本文介绍了一种野外调查与分析材料的方法,以及在河南睢杞林埸,试用于美杨(防护林带为主)的结果。调查土壤时,除剖面调查外,并对一些土壤特性,其中包括透水性、容重、土壤水分、地下水(水位与水质)、质地、粘质层(深度与厚度)、pH值、铵态氮、速效P_2O_5进行了野外观测。观测结果采用了两种分析方法:一方面采用相关系数的统计方法,计算结果,地下水位与美杨树高生长的相关显著=0.458,P<0.05),根系集中层容重与美杨树高生长的相关极显著=0.804,P<0.01),其余土壤特性与美杨树高生长的相关均低于统计学上的一般显著标准;另一方面从理论与野外观测的结果,将地下水位分为3级,质地4级,粘质层3级,透水性3级,pH值(根系集中层)3级,容重3级,并分别找出了各级美杨的树高生长情况。植被稠查分估舒描远(质的稠查)与数量航箭二种,前者主要采用法瑞学派的方法,稠查填目舒有:总估舒度、攀度、物候相、生活型、根系、高度等填;后者采用点样法,点样法架用薄木板与铁杆做成,稠查杭舒盖度与频度二稠。美福拿丛按区别种分为二个亚拿丛:印度白茅亚拿丛与中国白茅亚拿丛,后者复分为黄鼠草类型与标准类裂。对于所有区别种与擎落,均采用加权平均方法,爵算出其对土壤特性的数量指标,并圃明其对美格生长的指示意义。根据满查桔果,提出了在稠查地区内美揭适宜生长的土壤条件的数量指标,以及指示植物与攀落。最后甜渝了所用方法的优缺点。

Determination of some water relations parameters of 9 shrubs with the Pressurevolume technique has shown that there were considerable variations in the water relations parameters of different shrubs and that some parameters were indicative for their adaptations to the ecological conditions. It has been found that two desert shrubs, Tetraena mongolica Maxim. and Zygophyllum xanthoxylon (Bge.) Maxim., exhibited strong ability of drought tolerance, whereas the typical sandy shrubs were quite diverse in adaptation...

Determination of some water relations parameters of 9 shrubs with the Pressurevolume technique has shown that there were considerable variations in the water relations parameters of different shrubs and that some parameters were indicative for their adaptations to the ecological conditions. It has been found that two desert shrubs, Tetraena mongolica Maxim. and Zygophyllum xanthoxylon (Bge.) Maxim., exhibited strong ability of drought tolerance, whereas the typical sandy shrubs were quite diverse in adaptation strategy. Salix psammophila C. Wang et Ch. Y. Yang, Artemisia ordosica Krasch., Caragana intermedia Kuang et H.C.Fu and Ammopiptanthus mongolicus (Maxim.) were more or less close to each other in water relations parameters. Their ψπ,p ranged from -1.4 MPa to -2.4 MPa, and Vp/Vo lay between 62% and 76%. However, some special features of adaptation were found in the other three species, e.g., Sabina vulgaris Ant., Hedysarum mongolicum Turcz. and Artemisia sphaerocephala Krasch.

以压力容积(PV)技术测定了毛乌素沙地9种灌木的水分关系参数。结果表明,沙生及荒漠灌木水分关系参数有较大的变异性,并且有些参数对不同灌木的生态适应性具有一定的指示意义。两种荒漠灌木四合木(TetraenamongolicaMaxim.)及霸王(Zygophylumxanthoxylon(Bge.)Maxim.)具有很强的干旱适应性,其它的多数沙生灌木则表现出多样的适应性。沙柳(SalixpsammophilaC.WangetCh.Y.Yang)、油蒿(ArtemisiaordosicaKrasch.)、中间锦鸡儿(CaraganaintermediaKuangetH.C.Fu)及沙冬青(Ammopiptanthusmongolicus(Maxim)ChengF.)在一些重要的参数上比较接近,它们的ψπ,p处在-1.4~-2.4MPa之间,Vp/Vo处于62%~76%之间,然而其它3种沙生灌木沙地柏(SabinavulgarisAnt.)、蒙古岩黄芪(HedysarummongolicumTurcz.)及籽蒿(ArtemisiasphaerocephalaKrasch.)在干旱适应性方面则表现出...

以压力容积(PV)技术测定了毛乌素沙地9种灌木的水分关系参数。结果表明,沙生及荒漠灌木水分关系参数有较大的变异性,并且有些参数对不同灌木的生态适应性具有一定的指示意义。两种荒漠灌木四合木(TetraenamongolicaMaxim.)及霸王(Zygophylumxanthoxylon(Bge.)Maxim.)具有很强的干旱适应性,其它的多数沙生灌木则表现出多样的适应性。沙柳(SalixpsammophilaC.WangetCh.Y.Yang)、油蒿(ArtemisiaordosicaKrasch.)、中间锦鸡儿(CaraganaintermediaKuangetH.C.Fu)及沙冬青(Ammopiptanthusmongolicus(Maxim)ChengF.)在一些重要的参数上比较接近,它们的ψπ,p处在-1.4~-2.4MPa之间,Vp/Vo处于62%~76%之间,然而其它3种沙生灌木沙地柏(SabinavulgarisAnt.)、蒙古岩黄芪(HedysarummongolicumTurcz.)及籽蒿(ArtemisiasphaerocephalaKrasch.)在干旱适应性方面则表现出相当的特殊?

Monocalyptus is a subgenus, the second largest in the genus Eucalyptus L'Hetitier, including 134 species and 9 subspecies. The species transfer of Monocalyptus is of great significance in ecophytogeography. A species elimination test was established in Yipinglang Forest Farm, Yunna Province, China with 11 species of Monocalyptus. 7-year results showed that E.regnans, E.obliqua, E.delegatensis, E.elata, E.fraxinoides, E.triflora, E.fastigata, E.dendromorpha and E.muelleriana were adapted...

Monocalyptus is a subgenus, the second largest in the genus Eucalyptus L'Hetitier, including 134 species and 9 subspecies. The species transfer of Monocalyptus is of great significance in ecophytogeography. A species elimination test was established in Yipinglang Forest Farm, Yunna Province, China with 11 species of Monocalyptus. 7-year results showed that E.regnans, E.obliqua, E.delegatensis, E.elata, E.fraxinoides, E.triflora, E.fastigata, E.dendromorpha and E.muelleriana were adapted to the local environments and very promising in growth rates in comparison with E.globulus planted at adjacent plots at the same time. A conclusion could be drawn from the trial that site selection would be essential for successfully planting Monocalyptus , the temperature regime be more critical for the species transfer of Monocalyptus than that of precipitation.

单蒴盖亚属(Monocalyptus)是桉树属(EucalyptusL’Heritier)中第2大的亚属,包括134种和9亚种。单蒴盖亚属桉树引种具有很重要的生物地理学意义。1990年在云南一平浪林场建立的树种试验,包括王桉(E.regnans)、斜叶桉(E.obliqua)、大桉(E.delegatensis)、滨河白桉(E.elata)、白腊树桉(E.fraxinoides)、雪桉(E.pauciflora)、三花桉(E.triflora)、高桉(E.fastigata)、布达王桉(E.dendromorpha)和缪勒纤皮桉(E.muelerana)。生长量超过同期种植的蓝桉(E.globulus)。试验规模不大,但具有重要的生态植物地理指示意义。除气候条件比较适宜外,还可能因为试验地前作为云南松,土壤微生物群落比较丰富,尤其是彩色豆马勃(Pisolithus)。

 
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