Please enable JavaScript.
Coggle requires JavaScript to display documents.
CARBON (C) Link Title, FUN Facts, Sources, HOW CAN WE BUILD SOIL CARBON?,…
Soil
chemical
-
-
-
humus stores anions (N, P, S and Zn
-
-
-
-
-
-
Plant
-
-
-
Photosynthesis
excessive use of soluble nitrogen & phosphorus (synthetic or from manure)
effective at driving plant production,
often to the detriment of photosynthesis
C:N Ratios
-
influences
-
-
-
-
if N will be mineralized (released)
through decomposition
OR
if N will be immobilized (tied up)
by microbes as they break it down
-
-
-
-
-
TESTS
-
-
-
-
-
Constipated soils? Is soil missing:
air,
water,
sugar,
calcium and a little nitrogen and phosphorus
-
-
-
-
FUN Facts
-
-
-
-
In viticulture: higher soil C may not be desirable, in vineyards w/gravel soils, we found that improvements in C cycling increased health, vigour, quality of grapes and YAN (Yeast Available Nitrogen)
-
-
2021 study states that half of all global methane emissions are from natural and anthropogenic aquatic source
1% increase in OC (12” depth in loam soil) increase water storage by 24,000 gal/acre (potential to be much greater than this)
50 to 70% of pre-Ag carbon has been lost through management = 50-70% of our water holding potential.
storehouse for water, energy, and nutrients
US may have lost up to 5% C.
1% C = $340/ ac in fertilizer value
5% C loss = $1,700/ac in fertiliser
& a reduction of 120-360,000 gal of water holding capacity.
Proper grazing management can conservatively increase soil C storage on US rangelands between 0.04 to 0.24 tonnes of carbon per year, although some ranchers are measuring 1.2 T
C can move like water through a landscape, it is dynamic, and landscapes and their management are complex
Dairies: Conventional high-input dairy pastures were providing between $62-$1540/ha/yr.
Well managed biological systems could be providing up to $6,511 ha/yr in ecosystem services link
-
-
-
SOM
soil organic matter
-
influences soil’s chemical, physical, and biological properties
the organic fraction of the soil that includes:
plant, animal, and microbial residues in various stages of decomposition,
biomass of soil microorganisms
substances produced by plant roots & other soil organisms
-
-
-
-
CARBON CYCLES
Short-Term Decomposition
“I’m here for a good time, not a long time, honey”
-
-
fuel for soil microbes, worms, and insects that either respire or poop excess carbon back into the soil.
Efflux = carbon breathing in & out of soil, powering up plant photosynthesis.
add organic materials, like roots, dead leaves, compost, manure, and urine
influenced by temperature, moisture, time of day/year and food availability for microbes.
As biological communities advance from more primitive bacterial conditions towards higher fungal biomass or activity, then this atmospheric out-breath may reduce to 25%
-
HUMUS
-
-
Humification = change of organic matter into fully decomposed humus & Carbon becomes entombed in a clay-silt microbial matrix
Humus is the dark brown by-product of an organic substance in soil, whereby the source material is no longer recognizable
-