1) DCA & CCA ordination
DCA和CCA排序
2) DCA ordination
DCA排序
1.
DCA ordination of ecological distribution of saprophytic lichens in forest ecosystem of Tianshan;
天山森林生态系统中朽木生地衣植物生态分布的DCA排序
2.
DCA ordination of ecological distribution of saprophytic bryophytes in forest ecosystems in Changbai Mountains.;
长白山森林生态系统腐木生苔藓植物生态分布的DCA排序研究
3.
Both DCA ordination and TWINSPAN classification exhibited consistent results.
结果表明:DCA排序与TWINSPAN分类结果较一致,DCA排序较好地体现了各群丛类型与环境因子的相互关系,DCA第一排序轴主要反映了坡度的变化梯度;DCA排序图的对角线基本体现了坡向的变化梯度。
3) DCA
DCA排序
1.
In order to probe into the range of distribution of the shrub species in the ecotone between the loess hilly area and bedrock area in the Zhongyang county of west Shanxi province,the niche breadth(Levins,Shannon-weiner index),niche overlap(pianka,simple Morisita) and Detrended Correspondence Analysis(DCA) of 29 species were calculated in this paper.
应用Levins和Shannon-weiner生态位宽度指数,以及Pianka生态位重叠指数、简化Morisita生态位重叠指数对晋西黄土区和土石山区交错地带29个主要灌木树种的生态位特征进行了研究,并对各树种的DCA排序分析结果与生态位特征进行了对比分析。
2.
By using the niche breadth,niche overlap,and TWINSPAN,DCA,The gradual change of the dominant species niche in the process of vegetation restoration,the role of the dominant species in communities and the relationships of communities have been studied.
通过生态位宽度与生态位重叠指数 ,结合 TWINSPAN分类与 DCA排序 ,研究植被恢复过程中优势种生态位的梯度变化 ,以及这些种在不同群落类型中的地位、各群落之间的关系 。
3.
The features of pollen assemblages are dealt with in this paper using the methods of DCA and correlation analysis.
花粉百分比含量DCA排序与相关分析发现 ,荒漠区不同植物群落下表土花粉组合特征各不相同 ,而且与相应的植物群落及其所代表的环境特征相一致。
4) CCA
CCA排序
1.
Using heavy metals content data,we analyzed the pattern of heavy metals and its influencing factor by TWINSPAN and CCA.
根据江苏省农用地22个标准样地的7种重金属元素含量测定结果,应用TWINSPAN分类、CCA排序的多元统计方法,对江苏农用地耕作层土壤重金属元素含量格局和影响因子进行了定量分析。
2.
Arbors,shcrubs and herbage species were included for analyzing relations of different functional layers by using TWINSPAN and CCA.
CCA排序结果同TWINSPAN。
5) CCA ordination
CCA排序
1.
In this paper,the relationships between tree species distribution and environmental gradient in eastern Zhongtiao Mountain were studied by TWINSPAN and CCA ordination,and the species group division was made according to the relative positions of the tree species on the ordination diagram and referring to the dendrological documents.
利用CCA排序和TWINSPAN分类,探讨了中条山东段森林植被中乔木树种分布与环境梯度的关系,并根据树种在排序图上的相对位置,同时参考相关文献资料,进行了种组划分。
2.
In this paper, the method of quantitative analysis using sofeware TWINSPAN and CCA ordination were used to analyze the community classification, and to find the major environmental factors which restrict the distribution of major populations in Dazhu mountain in Jiaonan.
本研究以胶南市大珠山的森林群落为研究对象,采用数量分析的方法,应用TWINSPAN软件对主要群落进行分类;利用CCA排序分析环境因子与主要木本种群的关系,找出影响种群分布的主要环境因子;在此基础上分析各主要环境因子资源维上的种群生态位宽度和重叠。
6) CCA
《CCA》
1.
在主动信息服务中两种《CCA》检索方案比较研究;
在主动信息服务中两种《CCA》检索方案比较研究
补充资料：2,4-dca
CAS: 554-00-7
分子式: C6H5Cl2N
分子质量: 162.02
沸点: 242℃
熔点: 59-63℃
中文名称: 2,4-二氯苯胺
英文名称: 2,4-dichloro-Benzenamine；2,4-Dichloroaniline；2,4-dichloro-anilin；2,4-dca；2,4-dichloranilin；2,4-dichloranilin；2,4-dichlorobenzenamine；2,4-dichloro-benzenamin
性质描述: 白色针状结晶。熔点63℃，沸点245℃，相对密度1.567（20、4℃），能溶于乙醇；乙醚等有机溶剂和酸类。微溶于水。在空气中颜色会变深。
生产方法: 由乙酰苯胺经氯化；水解而得。
用途: 用作染料中间体。
分子式: C6H5Cl2N
分子质量: 162.02
沸点: 242℃
熔点: 59-63℃
中文名称: 2,4-二氯苯胺
英文名称: 2,4-dichloro-Benzenamine；2,4-Dichloroaniline；2,4-dichloro-anilin；2,4-dca；2,4-dichloranilin；2,4-dichloranilin；2,4-dichlorobenzenamine；2,4-dichloro-benzenamin
性质描述: 白色针状结晶。熔点63℃，沸点245℃，相对密度1.567（20、4℃），能溶于乙醇；乙醚等有机溶剂和酸类。微溶于水。在空气中颜色会变深。
生产方法: 由乙酰苯胺经氯化；水解而得。
用途: 用作染料中间体。
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