Fjölrit RALA - 15.01.2001, Page 18

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1. ás: Framvinda af völdum lúpinu
Axis V.Lupin driven succession
5. mynd. Megindrættir í framvindu samkvæmt skipan reita eftir 1. og 2. ási DECORANA-hnitunar.
Figure 5. Main successional trends along DECORANA axes 1 and 2.
3. tafla. Fylgni (r) umhverfisþátta og nokkurra gróðurþátta við reitahnit á 1. og 2. ás DECORANA fjöl-
breytugreiningar. Meðaltal ± staðalskekkja, feitletmn merkir marktæka fylgni, p<0.01, n=93.
Table 3. Correlation (r) of environmental and some vegetation variables with plot scores on axis 1 and
2 of the DECORANA-ordination. Average ± s.e. Significant correlation is indicated in bold, p<0.001,
n=93.
Þáttur Variable Meðaltal Average 1. ás Axis I 2. ás Axis 2
UmhverfVEnvironment:
Sýrustig jarðvegs/5'o;7 pH 6.27 ± 0.05 0.490 -0.397
Kolefni í jarðvegi/Soil C (%) 2.40 ±0.18 -0.497 0.598
Köfnunarefni í jarðvegi/50// N (%) 0.18 ±0.01 -0.6X7 0.446
Hæð yfír sjó/Height above sea level (m) 112.53 ±4.80 0.219 0.004
Ársúrkoma /Mean annual precip. (mm) 1112.28 ±67.59 -0.431 -0.015
Árshiti/Afean annual temp. (°C) 3.06 ±0.08 -0.511 -0.046
Aldur lúpínu (ár)/Lupin age (yrs) 12.30 ±0.97 -0.596 -0.088
Gróður/ Vegetation:
Hæð lúpínuILupin height (cm) 55.43 ±3.86 -0.678 -0.014
Gróðurþekja/P/ímí cover (%):
LúpínaJLupin 49.65 ± 3.70 -0.590 0.007
Aðrar tvíkímblaða jurtir/Other dicots 6.05 ± 1.19 -0.278 -0.034
Runnar/Dwarf shrubs 7.10 ± 1.70 0.297 0.582
Grös IGrasses 11.32 ± 1.39 -0.379 -0.128
Starir og sefISedges and rushes 0.27 ± 0.07 0.325 0.220
Mosar/Bryophytes 20.23 ± 2.76 -0.445 0.067
Fléttur/Lichnes 0.29 ± 0.09 0.373 0.130
Sina/Standing dead 45.96 ±3.32 -0.723 0.028
Ógróið yfirborð/Bare ground 17.41 ±3.10 0.609 -0.372
Tegundafjöldi/Spec/ei richness:
Háplöntur/Fasoi/ar plants 13.95 ±0.89 0.692 0.278
Mosar/'Bryophytes 5.75 ±0.50 0.329 0.086
Vlétím/Lichens 1.27 ±0.25 0.593 0.074
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