助手标题  
全文文献 工具书 数字 学术定义 翻译助手 学术趋势 更多
查询帮助
意见反馈
   林木生长模型 的翻译结果: 查询用时:0.077秒
图标索引 在分类学科中查询
所有学科
更多类别查询

图标索引 历史查询
 

林木生长模型
相关语句
  tree growth model
     Tree mortality model is an important part of tree growth model system.
     林木枯损模型是林木生长模型系统的重要组成部分。
短句来源
  “林木生长模型”译为未确定词的双语例句
     Richards Growth Models Utility of Standing Timber
     Richards林木生长模型及其适用性
短句来源
     Comparative Study of Growth Model and 4-D Expression about a Tree
     林木生长模型比较研究及其四维表达
短句来源
     secondly, more data are used to estimate tree growth models;
     林木生长模型的估计中样本数据更多、变量更全面、估计的模型更符合实际情况;
短句来源
     there are several problems ,such as comparative study of growth model about a tree, theoretical foundation on 4-D expression , software platform and algorithmic on 4-D expression of a tree, computer reality on 4-D expression of a tree, etc. they are all studied in this paper.
     本文主要研究了如下几个问题:林木生长模型的比较研究、林木四维表达的理论基础、林木四维表达的软件平台和算法的实现、林木四维表达的计算机实现五个问题。
短句来源
     By establishing growth model of Populus alba×P. berolinensis were determined fast increment stages of the poplar:6~28_(th) of July for height growth and the fastest day was 17_(th) day;
     通过对银中杨林木生长模型的建立 ,确定出银中杨树高生长速增期为 7月 6日至 2 8日 ,速增点为 7月 17日 ;
短句来源
  相似匹配句对
     Models for Projecting Stand and Tree Growth
     林分和林木生长预测模型
短句来源
     Richards Growth Models Utility of Standing Timber
     Richards林木生长模型及其适用性
短句来源
     The Selection of Grey Models for Some Tree Species in Seedling Stage
     林木苗期生长灰色模型的选择
短句来源
     Research Trends in Trees Growth and Yield Prediction Models
     林木生长和收获预估模型的研究动态
短句来源
     Comparative Study of Growth Model and 4-D Expression about a Tree
     林木生长模型比较研究及其四维表达
短句来源
查询“林木生长模型”译词为用户自定义的双语例句

    我想查看译文中含有:的双语例句
例句
为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。
  tree growth model
Optimal spacing intervals between windbreaks could be predicted from the indices of a given windbreak structure, percentage of reduction of windspeed desired and tree growth model.
      
Using the physiological single tree growth model BALANCE, vitality of forest stands was simulated in dependence of the site-related factors, climate and stand structure.
      
Comparing an individual tree growth model for Pinus halepensis Mill.
      
These exposures were used in combination with a physiologically-based tree growth model to account for the interactions of climate and ozone.
      
An application of Neurogenetic Algorithm System to individual tree growth model
      
更多          


Tree mortality model is an important part of tree growth model system. Logistic regression was used to model tree mortality of Larix based on the data from l31 diameter-class groups of l2 forest management inventory remeasured plots in Wangqing Forestry Bureau of Jilin Province. Independent variables are diameter class, relative diameter ( RD ), number of stems per hectare, basal area per hectare, quadratic mean diameter ( DG ), degree of closeness ( P )and sum of squared diameter of larger trees than the...

Tree mortality model is an important part of tree growth model system. Logistic regression was used to model tree mortality of Larix based on the data from l31 diameter-class groups of l2 forest management inventory remeasured plots in Wangqing Forestry Bureau of Jilin Province. Independent variables are diameter class, relative diameter ( RD ), number of stems per hectare, basal area per hectare, quadratic mean diameter ( DG ), degree of closeness ( P )and sum of squared diameter of larger trees than the predicting diameter class. An empirical equation including RD,P and DG was proposed by means of square correlation coefficient and coefficient of variation for all parameters. The equation is characterized by simple form, convenient measurement and calculation, without requiring stand age and site quality index, and good stability of the parameters. It may be used to predict mortality ratio of diameter class and mortality probability of individual tree for Larix.

林木枯损模型是林木生长模型系统的重要组成部分。根据来自吉林省汪清林业局森林经理调查的12个落叶松复位样地的131个径阶组数据,应用Logistic型回归式建立了落叶松林木枯损模型。自变量有径阶、相对直径、每公顷株数、每公顷断面积、平方平均直径、郁闭度和大于所估径阶的林木直径平方和。考虑模型的相关指数和各参数的变动系数,得出仅包含相对直径、郁闭度、平方平均直径3个自变量的经验方程。该经验方程具有形式简单、测算容易、无需年龄和地位质量指标、参数稳定性好等特点,可用于落叶松径阶枯损比率和单木枯损概率的预估。

Abstract In order to realize forest resource data updating, evaluation of silvicultural treatment,

从近年来林木生长和收获模型的研究中,可以看出有如下的发展动向:(1)由林分水平模型向径级水平模型、单木水平模型转变;(2)从林木的自然生长模型发展来考虑人为育林措施的经营模型;(3)由简单的人工同龄纯林模型深化到复杂的天然异龄混交林;(4)关注点从测树学调查因子的经验性模型转向生理生态的机理性模型。还就今后我国的林木生长模型研究提出了几点建议。

By establishing growth model of Populus alba×P.berolinensis were determined fast increment stages of the poplar:6~28_(th) of July for height growth and the fastest day was 17_(th) day;21_(th) of June ~29_(th) of August for breast diameter growth and the fastest day was 25_(th) day of July; 11~17_(th) year for volume growth and the fastest year was 14_(th) year.Therefore was found the dynamic changing rule of growth with time of Populus alba×P.berolinensis.

通过对银中杨林木生长模型的建立 ,确定出银中杨树高生长速增期为 7月 6日至 2 8日 ,速增点为 7月 17日 ;胸径速增期为 6月 2 1日至 8月 2 9日 ,速增点为 7月 2 5日 ;材积生长速增期为 11~ 17a,速增点为第 14年 ,从而揭示了银中杨林木生长随时间的动态变化规律

 
<< 更多相关文摘    
图标索引 相关查询

 


 
CNKI小工具
在英文学术搜索中查有关林木生长模型的内容
在知识搜索中查有关林木生长模型的内容
在数字搜索中查有关林木生长模型的内容
在概念知识元中查有关林木生长模型的内容
在学术趋势中查有关林木生长模型的内容
 
 

CNKI主页设CNKI翻译助手为主页 | 收藏CNKI翻译助手 | 广告服务 | 英文学术搜索
版权图标  2008 CNKI-中国知网
京ICP证040431号 互联网出版许可证 新出网证(京)字008号
北京市公安局海淀分局 备案号:110 1081725
版权图标 2008中国知网(cnki) 中国学术期刊(光盘版)电子杂志社