1) canopy closure estimation models
郁闭度估测模型
2) estimation model
估测模型
1.
Hyperspectral estimation models for LTN content of winter wheat canopy under stripe rust stress;
条锈病胁迫下冬小麦冠层叶片氮素含量的高光谱估测模型
2.
Chlorophyll-a concentration estimation model based on field spectral reflectance of water
基于实测光谱的叶绿素a估测模型
3.
Using linear and non-linear regression methods,the estimation models for pigment contents in disease tobacco were built based on some samples and confirmed through the test of the remainders.
运用单变量线性或非线性拟合分析技术,选取部分样本建立色素含量估测模型,并利用其余样本对模型进行精度检验。
3) Estimating model
估测模型
1.
Analysis showed that the stem and leaf biomass was mostly affected by the stem diameter and plant height in the lower part, and that the relationships between the stem diameter and plant height in the lower part and the stem and leaf biomass were expressed by a power function, based on which an estimating model for stem and leaf biomass was established as W = 0.
为构建木薯茎叶生物量的估测模型,调查了木薯上、中、下部的茎粗、株高、叶柄长等形态学指标与茎叶生物量的关系。
4) Canopy density
郁闭度
1.
Furthermore,correlation analysis have been performed between vegetal status measured by canopy density and shelterbelt porosity and TSP removal percentages.
通过对上海浦东某交通干道旁侧绿化带不同季节大气中总悬浮颗粒物(TSP)的测定,定量研究了绿化带对TSP的净化效益;同时对研究区域内植物的配置情况用郁闭度和疏透度进行了表征,并研究了其与TSP的净化效益之间的相关性。
2.
The main factor of green belt hindering the gaseous pollutants diffusion was the canopy density and not the vegetation quantities.
以CO为环境示踪物,通过对西安市典型街道的实测和数据分析,讨论了绿化形式对街道污染物扩散效果的影响,指出绿化带对气态污染物扩散存在阻碍作用的因素是郁闭度,而不是绿量,车流量的大小对行道树树冠的生态净化功能有直接影响,并据此对街道绿化的生态设计给出了建议。
3.
koreanumwhen the factors of planting density,canopy density and using fertilizer were changed.
以产量为指标,以种植密度、郁闭度及使用肥料为影响因素,采用正交试验法,探讨朝鲜淫羊藿于阔叶林下仿生栽培的最佳技术措施。
5) crown density
郁闭度
1.
Quickly accurate determination method of forest land crown density based on ArcView GIS;
ArcView GIS支持下的林地郁闭度的快速精确测定方法
2.
A new method to determine crown interception on the basis of calculating crown density where the raingage places within 1 m on all sides to it,which may determine the crown interceptions on different density classes at one time,is designed to solve the difficult problem,the big error in determining crown interception because of the unevenness of canopy density and spaces.
设计了一种基于计算承雨器四周各 1m范围内树冠郁闭度 ,进而通过一次降雨试验可观测到不同郁闭度级林冠截留降雨量的方法 ,解决了以往林冠截留降雨量测试中由于林冠疏密和树冠间隙分布不均引起的测量结果误差较大的难
3.
Forest structure,individual quality,tree density and crown density,and structure and function of brush forest are used to construct a criterion to the LQBF.
判定低质低效林的依据是林分的结构、林木个体质量、密度和郁闭度、灌木林结构和功能。
6) Canopy closure
郁闭度
1.
Simplified approach to measure canopy closure based on fish lenses
基于鱼眼镜头的林冠郁闭度简易测量方法
2.
The characteristics of plant species structure of mature forest stands of Pinus armandi with both weak and moderate canopy closure in the Xishan Mount Forest Park of Kunming were studied by means of sample-plot survey in order to find out the influence of stand canopy closure on plant species structure.
为探讨郁闭度对植物物种结构的影响,用样方法对昆明西山弱度郁闭及中度郁闭的华山松成熟林植物物种结构特征进行研究。
补充资料：AutoCad 教你绘制三爪卡盘模型,借用四视图来建模型
小弟写教程纯粹表达的是建模思路,供初学者参考.任何物体的建摸都需要思路,只有思路多,模型也就水到渠成.ok废话就不说了.建议使用1024X768分辨率
开始
先看下最终效果
第一步,如图所示将窗口分为四个视图
第二步,依次选择每个窗口,在分别输入各自己的视图
第三步,建立ucs重新建立世界坐标体系,捕捉三点来确定各自的ucs如图
第四步,初步大致建立基本模型.可以在主视图建立两个不同的圆,在用ext拉升,在用差集运算.如图:
第五步:关键一步,在此的我思路是.先画出卡爪的基本投影,在把他进行面域,在进行拉升高度分别是10,20,30曾t形状.如图:
第六步:画出螺栓的初步形状.如图
第七步:利用ext拉升圆,在拉升内六边形.注意拉升六边行时方向与拉升圆的方向是相反的.
之后在利用差集运算
第八步:将所得内螺栓模型分别复制到卡爪上,在利用三个视图调到与卡爪的中心对称.效果如图红色的是螺栓,最后是差集
第九步:阵列
第10步.模型就完成了
来一张利用矢量处理的图片
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条