DCCA

After modification, DCCA and PCCA are considered to be ideal ordination methods at present.

CCA改进 后的DCCA和PCCA,是现今较理想的排序方法.

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Investigated communites were classified by using module of Ordination Axes Clustering ( OAC ) in Detrended Canonical Correspondence Analysis ( DCCA ).

采用DCCA ( 去势典范对应分析 ) 排序轴分类法 ( OAC ),对所调查的群落进行了生境与群落关系的分类.

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The studies indicate that CCA and DCCA are applicable in florology and phytogeography.

本文研究表明将DCCA和CCA应用 到植物区系地理学研究上是可行的.

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Species distribution is found to be greatly influenced by slope positions, longitude and latitude, annual precipitation and precipitation from March to May through detrended canonical correspondence analysis ( DCCA). 3.

去势典范对应分析（DCCA）发现坡位、经纬度、年降水量和3-5月降水量对物种分布产生影响。

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The racemic purity of cis-and trans-DCCA was 91.4 % and 93.0 %, respectively.

顺、反式二氯菊酸几何异构体含量分别为91.4%、93.0%.

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The arrow of the slope is the longest, thus, following DCCA, the second axis shows that the slope from the bottom to the top is gradually decreasing, meantime, the thickness of litter layer is increasing.

坡度的箭头长度最长，故第二轴表示样方所在的坡度，即沿着DCCA第二轴从下到上坡度逐渐减小，枯枝落叶层厚度逐渐增大。

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The optical purity of cis-R ( + )-and cis-S (-)-DCCA was 93.7 % and 81.8 % , respectively.

顺式 -R ( + ) - 和顺式 -S ( - ) - 二氯菊酸光学纯度分别为93.7%、81.8%.

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The results showed that the first four DCCA axes were significantly correlated to agricultural land ratio, landscape diversity index, forest land ratio, and landscape contagion index.

结果表明，DCCA排序的前4轴分别与农业用地比率、景观多样性指数、森林比率显著相关。

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Studies on DCCA of the attached diatom community in headwater rivers of Fenhe Reservoir

汾河水库水源河着生硅藻群落的DCCA研究

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