Effects of climate, biotic factors, and phylogeny on allometric relationships: testing the metabolic scaling theory in plantations and natural forests across China

Sun, Han; Wang, Xiangping; Fan, Dayong

doi:10.1186/s40663-020-00263-y

Forest Ecosystems

Table 1 The r² of each climate, biotic factors and phylogeny in explaining the scaling exponent for allometric relationships of leaf, stem and root biomass with diameter at breast height (L-D, S-D, and R-D, respectively). Negative r² represents negative correlation while others represent positive correlation. Significant relationships (p < 0.05) were boldfaced. Abbreviations: PET annual potential evapotranspiration, MTCM mean temperature for the coldest month, MI moisture index

From: Effects of climate, biotic factors, and phylogeny on allometric relationships: testing the metabolic scaling theory in plantations and natural forests across China

	Overall		Plantation		Natural forest
	r²	p	r²	p	r²	p
L-D scaling exponent
Climate
PET	−0.02	0.043	0.00	0.823	−0.09	0.005
MTCM	−0.03	0.008	0.00	0.356	−0.10	0.003
MI	−0.01	0.250	−0.01	0.232	0.00	0.717
Biotic factors
Biome	0.02	0.136	0.00	0.917	0.09	0.060
Forest type	0.01	0.425	–	–	0.01	0.291
Leaf form	0.00	0.393	0.00	0.422	0.01	0.394
Leaf phenology	0.01	0.106	0.00	0.826	0.07	0.014
Stem density	0.05	0.010	0.05	0.024	0.05	0.188
Forest age	0.01	0.232	0.02	0.137	−0.02	0.409
Phylogeny
Family	0.14	0.347	0.16	0.153	0.17	0.787
Genus	0.26	0.166	0.22	0.257	0.40	0.467
Species	0.43	0.102	0.40	0.120	0.58	0.381
S-D scaling exponent
Climate
PET	0.00	0.243	0.01	0.260	0.00	0.664
MTCM	0.00	0.990	0.00	0.983	0.00	0.899
MI	−0.02	0.030	0.00	0.457	−0.06	0.012
Biotic factors
Biome	0.01	0.297	0.01	0.551	0.03	0.410
Forest type	0.03	0.011	–	–	0.07	0.004
Leaf form	0.00	0.307	0.00	0.450	0.08	0.003
Leaf phenology	0.00	0.664	0.00	0.352	0.00	0.748
Stem density	0.00	0.493	−0.01	0.328	0.00	0.622
Forest age	0.00	0.511	0.00	0.707	0.00	0.982
Phylogeny
Family	0.25	0.000	0.17	0.106	0.45	0.000
Genus	0.39	0.000	0.28	0.030	0.70	0.000
Species	0.53	0.000	0.42	0.074	0.77	0.000
R-D scaling exponent
Climate
PET	0.00	0.782	−0.02	0.084	0.02	0.223
MTCM	−0.01	0.336	−0.05	0.015	0.01	0.387
MI	−0.00	0.846	0.00	0.801	0.00	0.937
Biotic factors
Biome	0.01	0.428	0.06	0.051	0.05	0.332
Forest type	0.01	0.433	–	–	0.02	0.306
Leaf form	0.02	0.037	0.02	0.139	0.06	0.044
Leaf phenology	0.00	0.704	0.00	0.621	0.02	0.262
Stem density	−0.02	0.222	0.00	0.770	−0.10	0.128
Forest age	0.00	0.816	0.01	0.270	−0.02	0.494
Phylogeny
Family	0.26	0.013	0.17	0.394	0.41	0.054
Genus	0.41	0.004	0.24	0.447	0.76	0.000
Species	0.58	0.003	0.47	0.161	0.82	0.005

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