aspen phenology— results of field observation lab meeting june 10 th, 2009
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![Page 1: Aspen Phenology— Results of Field Observation Lab Meeting June 10 th, 2009](https://reader036.vdocuments.us/reader036/viewer/2022081519/56649d2d5503460f94a039f1/html5/thumbnails/1.jpg)
Aspen Phenology—Results of Field Observation
Lab Meeting June 10th, 2009
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Outline
• General introduction • Measurement • Aspen Phenology • Observation Results
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Aspen (aspen poplar) Populus tremuloides
Soft-wooded, quick-growing treepropagating primarily through root sproutsleaving only the top with leafy branchesblack pots on the northward side and white power on the southward side
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Spatial Distribution in Western Canada
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Provenance Trail in Athabasca
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120 130 140
0
1
2
3
4
5
6In
dex
of B
ud-b
reak
Days
1
2
3
4
5
6
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What’s affect the timing of phenology• Genotype • Weather• Flowering • Diseases • Position on the tree
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Phenology: flowering
772, foothill of rock mountain
2 4 6 8 10
01
23
45
Time
Ind
ex
of B
ud
bu
rst
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Phenology: diseases & position
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Phenology: Genotype
Bud090504 Bud090507 Bud090511 Bud090515 Bud090518 Bud090522 Bud090525 Bud090527 Bud090529 Bud0906020
1
2
3
4
5
6
7
751 752753 754755 756757 758759 760761 762763 764765 766767 768769 770771 772773 774775 776777 778779 780781 782783 784785 786787 788789 790791 792793
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Spatial Variance of Phenotype
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Phenology: weather
• Temperature-driverchili day, warm weather
• Water-driverprecipitation, soil moisture
• Frost damagebud burst(spring),bud set(fall) 789, MN
May 18th SnowMin temperature: -10 °C
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Temperature and budburst
4-May
5-May
6-May
7-May
8-May
9-May
10-May
11-May
12-May
13-May
14-May
15-May
16-May
17-May
18-May
19-May
20-May
21-May
22-May
23-May
24-May
25-May
26-May
27-May
28-May
29-May
30-May
31-May
1-Jun
2-Jun
0
2
4
6
8
10
12
14
16 Temperature
Bud090504 Bud090507 Bud090511 Bud090515 Bud090518 Bud090522 Bud090525 Bud090527 Bud090529 Bud0906020
1
2
3
4
5
6
7
P793
P785
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Delta of Temperature and development of bud burst
1 2 3 4 5 6 7 8 905
10152025303540
Temperature
1 2 3 4 5 6 7 8 90
0.2
0.4
0.6
0.8
1
1.2
1.4
785, SK 793, BC
1 2 3 4 5 6 7 8 9-0.5
0
0.5
1
1.5
2
2.5
785
793
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Heat sum
• The accumulation of temperature above a threshold
• Temperature Threshold: 5 °C• From the first day average temperature above
5 °C to the day bud developed to stage 3
n°C
5°C
Σ(Temperature )
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4-May
5-May
6-May
7-May
8-May
9-May
10-May
11-May
12-May
13-May
14-May
15-May
16-May
17-May
18-May
19-May
20-May
21-May
22-May
23-May
24-May
25-May
26-May
27-May
28-May
29-May
30-May
31-May
1-Jun
2-Jun
0
2
4
6
8
10
12
14
16 Temperature
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Heat sumSEEDLOT LAT LONG ELEV REGION Heatsumday Heatsum
751 55.03 -118.73 649 ABf 142 190.2914752 56.41 -117.76 739 nAB 143 202.8289753 57.12 -117.74 606 nAB 143 202.8289754 56.61 -117.98 709 nAB 145 227.2956755 57.78 -117.96 459 nAB 141 178.2664756 58.56 -115.64 343 nAB 136 170.6206757 55.19 -114.61 726 cAB 148 262.2081758 55.34 -115.01 646 cAB 151 294.0289759 58.2 -123.33 1177 BC 130 155.7539760 58.6 -122.33 335 BC 129 145.1248761 55.6 -116.67 632 cAB 145 227.2956762 55.6 -116.67 632 cAB 145 227.2956763 55.6 -116.67 632 cAB 145 227.2956764 55.64 -114.69 709 cAB 152 304.7373765 54.18 -115.78 731 ABf 143 202.8289766 54.1 -116.5 1018 ABf 146 237.6831767 54.14 -116.58 868 ABf 144 215.0123768 54.21 -116.44 803 ABf 148 262.2081769 54.21 -116.44 803 ABf 137 170.6206770 54.21 -116.59 914 ABf 145 227.2956771 53.2 -115.6 939 ABf 144 215.0123772 53.31 -115.46 939 ABf 149 275.6748773 53.3 -115.43 927 ABf 142 190.2914774 53.08 -115.26 912 ABf 143 202.8289775 55.6 -113.41 762 cAB 148 262.2081776 54.93 -112.74 545 cAB 146 237.6831777 54.94 -112.86 546 cAB 142 190.2914778 55.14 -113.02 601 cAB 147 248.2789779 55.06 -112.11 624 cAB 146 237.6831780 54.2 -105.7 490 SK 149 275.6748781 54.2 -106.8 513 SK 144 215.0123782 54 -106.9 519 SK 149 275.6748783 53.9 -105.8 517 SK 143 202.8289784 53.8 -106.7 583 SK 149 275.6748785 54.03 -108 530 SK 146 237.6831786 53.8 -108.5 710 SK 147 248.2789787 53.9 -107.5 570 SK 150 284.6998788 47 -93 384 MN 141 178.2664789 47.2 -93.8 405 MN 143 202.8289790 47.6 -93.4 424 MN 140 170.6206791 47.5 -93.6 433 MN 143 202.8289792 47.2 -93.4 395 MN 137 170.6206793 58.4 -123 511 BC 130 155.7539
Climate data were downloaded from Environment Canada;
Calculated from April 6 (95th day).
The mean temperature of this day is 5.395652;
Min heatsum: 145.1248 Max heatsum: 304.7373 Mean heatsum: 220.6493
Min bursting day: 34 Max bursting day: 57Mean bursting day: 48.62
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What’s the next
1, calculating the greenup day from RS imagery (2000 to 2005)
2, calculating the heatsum day based on ClimateBC/PP/WNA software packages;
3, comparing the two results;4, your advices... ?
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Acknowledgement
ThanksAndreas Hamann, Barb Thomas,
David Kamelchuk, Elisabeth Beaubien, Evan Miller-Tait, Stefan Schreiber, Xianli Wang
and others