Table 1 Redundancy analyses (RDA) of environmental effects on chlorophyll composition (Chl a/b).

From: Opposing shifts in distributions of chlorophyll concentration and composition in grassland under warming

 

Tibetan Plateau

Mongolian Plateau

Loess Plateau

All

Axis eigenvalues

Total

1.00

1.00

1.00

1.00

Constrained

0.01

0.01

0.06

0.04

Unconstrained

0.99

0.99

0.94

0.96

Factors R2

MAT

0.01

0.02*

0.25*** (−)

0.60***

MAP

0.01 (−)

0.44*** (−)

0.57*** (−)

0.10*** (−)

NP

0.08*** (−)

0.60*** (−)

0.19*** (−)

0.61*** (−)

PAR

0.12***

0.01

0.09***

0.11*** (−)

  1. Significance is denoted by asterisks (p < 0.001***, p < 0.05). Minus signs in parentheses represent the negative effects on Chl a/b, and without this symbol are positive effects.
  2. MAT mean annual temperature; MAP mean annual precipitation; NP ratio of soil nitrogen to soil phosphorus; PAR photosynthetically active radiation.
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