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biomass model
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  生物量模型
     According to all means,the optimal super-population tree biomass model for Eucalptus grandis stands were selected as follows:1nW~-2.305975+2.524209x lnD+0.762139x1n(H/D);
     树干生物量模型:1nW=-2.305975+2.524209×1nD+0.762139×ln(H/D)
短句来源
     Combined the land cover map accuracy (90.47%) together, the final predicted of the enhanced B-P Nerve Network forest biomass model was 88.04%, which was able to meet the production demand.
     综合土地覆盖图的分类精度(90.47%),增强型B-P神经网络森林生物量模型的最终预测精度为88.04%,满足生产精度要求。
短句来源
     Study on Estabilish and Estimate Method of Biomass Model Compatible with Volume
     与材积兼容的生物量模型的建立及其估计方法研究
短句来源
     Study on the Compatible Biomass Model
     相容性生物量模型研究
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     Then we analyze the precisions in plot setting,biomass measurement and biomass model using the law of error propagation. After the validation with practical cases,we conclude that the error in the measurement of forest biomass using the classical method is 7.63% to 14.56%.
     然后广泛运用误差传播定律,分别对样地设置、生物量调查及生物量模型进行了相应的精度分析,并结合实例进行了理论验证,最终得出了采用经典方法调查森林生物量的误差为7.63%~14.56%的结论.
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  “biomass model”译为未确定词的双语例句
     Gasification of biomass model compounds in supercritical water
     生物质模型化合物在超临界水中的气化
短句来源
     Grassland above-ground estimating biomass model can be expressed by the equation: Y=2477X-77.598(R~2=0.7589). Verified by in situ sampling data,the model has a better estimating result.
     植被指数DV I与草地地上生物量之间存在较好的相关性,其估算模型为Y=2477X-77.598(R2=0.7589),经实测数据验证,总体精度达到80%以上,基本上能够满足中尺度的草地地上生物量估算。
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     A study on relationships between remote sensing information and plant photosynthetic parameters in estimating biomass model
     生物量估测模型中遥感信息与植被光合参数的关系研究
短句来源
     Establishment of wetland vegetation biomass model by in-situ and remote sensing observation in Poyang Lake area
     基于Landsat-TM数据鄱阳湖湿地植被生物量遥感监测模型的建立
短句来源
     B.H, and its best biomass model is the first model. (2)The biomass structure percentages of the tree trunk, bark, branch and leaf approximate 66%, 12%, 19% and 3% respectively.
     (2 ) 30年的树木 ,其树干、树皮、树枝和树叶分别约占地上部分总生物量的 6 6 %、12 %、19%和 3 % ;
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  相似匹配句对
     model.
     模型。
短句来源
     Model.
     模型的适用范围。
短句来源
     Study on the Compatible Biomass Model
     相容性生物量模型研究
短句来源
     Study of biomass increases model
     生物种群增长模型的研究
短句来源
     Biomass Industry
     怎样种出个"绿色大庆"——谈发展生物质产业
短句来源
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  biomass model
Simulated TC from our version of the BIOMASS model corresponded well to the empirical estimates.
      
The dynamics of tree layer biomass was studied by combining 35 sample plots of field census with biomass model estimation in a natural Quercus aliena var.
      
The concepts underlying the algal biomass model can be used to predict algal photosynthesis and respiration and help build such a model.
      
Mechanistic functions allow a more complete description of the effects of environmental factors on plankton than would a biomass model.
      


The forest dominated by Cyclobalanopsis glauca is one of the main types of the subtropical evergreen broad-leaved forests in China, The studies on the primary productivity of the community have been completed with harvesting method. In this paper, a group of optimized regression biomass models for the tree and subtree layer were reported. The models were also analysed, examined and evaluated. The results showed that there is an allometric growth relationship among the organ variables. It is essential...

The forest dominated by Cyclobalanopsis glauca is one of the main types of the subtropical evergreen broad-leaved forests in China, The studies on the primary productivity of the community have been completed with harvesting method. In this paper, a group of optimized regression biomass models for the tree and subtree layer were reported. The models were also analysed, examined and evaluated. The results showed that there is an allometric growth relationship among the organ variables. It is essential to establish various optimized biomass models using the regression analysis method on the basis of various layers, species and variables. The models are relatively of high accuracy and can effectively predict the biomass of the community. The effective combination of the interspecific models are suitable for subtrees and companion trees. The model differences among species are closely related to their states and function in the community. The distribution ratio of net primary productivity in various organs is the synthetical reflection of the community structure and function in interspecific relationship, niche differentiation and population dynamics.

笔者用收获法对浙江建德山区的天然次生青冈常绿阔叶林群落的第一性生产力进行了研究。本文报道了林木层样木的生物量优化回归模型,并对模型进行了分析、检验和估算。结果表明,立木各器官变量之间存在着很好的相对生长关系;进行分层次、种类(组分)和自变量的模型选优是十分必要的;各种模型都有较高的精度,可以对该群落的生物量作出有效的估计;种间模型的有效组合适用于亚乔木层的种类和乔木层的伴生种类;种类(组分)间的模型差异与它们在群落中所处的地位或所起作用密切相关;净第一性生产力在各器官中的分配比例是植物群落结构与功能在种间关系、生态位分化和种群动态特征上的综合反映。

n this paper,I discussed the species composition and dynamics of aquatic macrophytes in the Zhushun Lake based upon results of 1 0 years observa-tions.Ⅰ also analyzed the replacement of construction species and its affectingfactors.It appears that lake siltation is the key factor responsible for thesuccession of aquatic macrophyte communities.Coverage,density,frequencyand importance value were used to describe the quantitative characteristics ofthe community.The dominant and subdominant species at different...

n this paper,I discussed the species composition and dynamics of aquatic macrophytes in the Zhushun Lake based upon results of 1 0 years observa-tions.Ⅰ also analyzed the replacement of construction species and its affectingfactors.It appears that lake siltation is the key factor responsible for thesuccession of aquatic macrophyte communities.Coverage,density,frequencyand importance value were used to describe the quantitative characteristics ofthe community.The dominant and subdominant species at different stages ofthe succession were classified based on importance values.The stratificationof the communities was determined by using the life-form spectrum of the co-mmunity.The biomass models of the above and under-water strata were estab-lished.The results show that the disappearing rate of species accelerates as theaccumulation rate of lake sediments increases.It also demonstrates that thetransparency of water only affects the distribution of the submerged plants,and the orthophosphorus concentration of the water is one of the factors limi-ting the productivity of aquatic macrophyte communities.

本文根据10年定位研究的结果,讨论了哈尔滨朱顺泡(湖)水生植物的种类组成和动态变化;分析了群落建群种的替代及其影响因素;指出水体变浅是导致水生植物群落演替的关键因素。同时利用盖度、密度、频度和重要值等计算了群落的数量特征,并按重要值划分了不同演替阶段的优势种和亚优势种;根据生活型确定了群落的分层结构;建立了群落生物量的分层模型。随着湖底上垫作用的进行,物种的消失速率在加快;实验证明透明度仅影响沉水植物的分布,而营养盐含量低是群落生产力限制因子。

The community ecology of the torrentiai plants was investigated in a stream ofNorth Temperate from 1986 to 1991.Some community parameters such as speciescomposition,quantitative features,physiognomy,structure,distribution pattern,dyna-mics and function werePresented.The minimum area was determined as being 5m ̄2from the species-area curve。The ralationships between the natural height and theabsolute height of Ranunculus bungei was significantly correlated.Furthermore,thecommunity exhibited a clear pattern of vertical...

The community ecology of the torrentiai plants was investigated in a stream ofNorth Temperate from 1986 to 1991.Some community parameters such as speciescomposition,quantitative features,physiognomy,structure,distribution pattern,dyna-mics and function werePresented.The minimum area was determined as being 5m ̄2from the species-area curve。The ralationships between the natural height and theabsolute height of Ranunculus bungei was significantly correlated.Furthermore,thecommunity exhibited a clear pattern of vertical stratification and horizontal mosaic. The phenological spectrum and biomass models were also established。In light ofthe resistance of the plant to interference,the reproductive strategies of the speciesagainst adverse conditions were discussed,and so was the Inland Kuroshio in rela-tion to its effect on the community.

本文根据6年定位研究结果,讨论了北温带山溪激流植物群落生态学方面的问题。文中分析了激流群落的种类组成、数量特征、外貌、结构、分布格局、动态与功能等。根据种-面积曲线确定样地最小面积;分析群落自然高度与绝对高度的相关性;探讨了群落的垂直分层与水平镶嵌;划分了群落的生态种组和生态差型;建立了群落的物候型谱和生物量成层模型;阐述了群落的建成过程和演替类型;最后,按照水毛茛对于扰的适应机制分析了其繁殖策略;提出了内陆黑潮并分析了其对群落演替所发生的影响。

 
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