growing space and growth factor gradients
DESCRIPTION
Growing space and growth factor gradients. Controlling disturbances is how we control competition. Competition. Growth factors Consider light and water (aboveground and belowground). TULIP POPLAR. VIRGINIA PINE. MESIC SOIL. DRY SOIL. MESIC SOIL. DRY SOIL. GROWING TOGETHER. MESIC SOIL. - PowerPoint PPT PresentationTRANSCRIPT
Growing space and growth factor gradients
Controlling disturbances is how we control competition
Competition
• Growth factors
• Consider light and water (aboveground and belowground)
GROWING TOGETHER
DRY SOIL DRY SOIL
DRY SOIL
MESIC SOIL MESIC SOIL
MESIC SOIL
VIRGINIA PINETULIP POPLAR
Light
• PAR–Photosynthetically Active Radiation
• Sun foliage/ shade foliage
• Shade tolerance
20%
LIGHT
0%
PsSun foliage
Shade foliage
20%
LIGHT
0%
Ps
Sun foliage
Shade foliage
Shade Tolerance
Ps
Light
Shade tolerant
Shade intolerant
Water
• Input
• Soil
• Stomates
Perc
ent S
oil W
ater
Heaviness of Texture
Field Capacity Available Water
Unavailable Water
From Brady, 1974
Growing Space• Sunlight
• Water
• Nutrients
• Physical space
• Total growing space
• Available growing space
1200 TPH
640 TPH
250 TPH
Total growing space
• Depends on time and place
– Macro and Micro conditions
Available Growing Space
• Grow
• Regeneration
Thinned
Unthinned
LatewoodEarlywood
No Available Growing Space
• Repartition
• Competition