130
R. R. Shahin
1
10
100
1000
OC-Stock (Gt)
Turnover Time
(Years)
loss 2100 (Gt)
OC-loss 2100 (%)
Labile
Humus
Recalcitrant
Fig. 10 The amounts of soil organic carbon pools, turnover time and the potential OC-loss at the
year 2100. Source data Davidson and Janssens [105]
of more stable organic matter compounds, thereby having positive feedback to climate that is attenuated by a shift towards a more efficient microbial community in
the longer term (http://adsabs.harvard.edu/abs/2013NatCC…3..395F). Some other
studies suggested that recalcitrant carbon not sensitive to global warming variations
[107, 108].
For semi-arid Mediterranean ecosystem in Spain, strong correlations between
climate change and soil erosion [109] and negative impacts on aggregate stability,
bulk density, water holding capacity, pH, organic matter content, total N, and soluble
P in the soil, all properties important for good crop growth [110]. Therefore, it can be
stated that if climate change increases soil erosion, it will also damage soil properties
that are important in the production of food and fiber resources needed by humans.
The distribution of soil organic carbon in vegetated and un-vegetated sites in a
Mediterranean lagoon (i.e. Lake Borullus) in Egypt was studied [111]; soil organic
carbon content decreased from 22.0 g C kg
−1 at a depth of 0–10 cm reaching a
minimum of 10.2 g C kg
−1 at a depth of 20–30 cm. Soil organic carbon content was
significantly higher in the vegetated sites than in the un-vegetated sites, especially
in the surface horizon. The soil organic carbon stock ranged between 760.6 Mt C in
the vegetated sites and 2420.2 Mt C in the un-vegetated sites, with total soil organic
carbon storage of 3180.8 Mt C. The average carbon sequestration rate of the vegetated
sites was higher than the un-vegetated sites (14.9 and 8.6 g C m
−2 year
−1 ). Based
on the area and carbon sequestration rate, the total carbon sequestration potential
of Lake Borullus was 4.04 Mt C year
−1 . The present study concluded that Lake
Borullus could be instrumental in formulating efficient strategies related to carbon
sequestration and reduction of GHG in Mediterranean wetlands (Fig. 11).
R. R. Shahin
1
10
100
1000
OC-Stock (Gt)
Turnover Time
(Years)
loss 2100 (Gt)
OC-loss 2100 (%)
Labile
Humus
Recalcitrant
Fig. 10 The amounts of soil organic carbon pools, turnover time and the potential OC-loss at the
year 2100. Source data Davidson and Janssens [105]
of more stable organic matter compounds, thereby having positive feedback to climate that is attenuated by a shift towards a more efficient microbial community in
the longer term (http://adsabs.harvard.edu/abs/2013NatCC…3..395F). Some other
studies suggested that recalcitrant carbon not sensitive to global warming variations
[107, 108].
For semi-arid Mediterranean ecosystem in Spain, strong correlations between
climate change and soil erosion [109] and negative impacts on aggregate stability,
bulk density, water holding capacity, pH, organic matter content, total N, and soluble
P in the soil, all properties important for good crop growth [110]. Therefore, it can be
stated that if climate change increases soil erosion, it will also damage soil properties
that are important in the production of food and fiber resources needed by humans.
The distribution of soil organic carbon in vegetated and un-vegetated sites in a
Mediterranean lagoon (i.e. Lake Borullus) in Egypt was studied [111]; soil organic
carbon content decreased from 22.0 g C kg
−1 at a depth of 0–10 cm reaching a
minimum of 10.2 g C kg
−1 at a depth of 20–30 cm. Soil organic carbon content was
significantly higher in the vegetated sites than in the un-vegetated sites, especially
in the surface horizon. The soil organic carbon stock ranged between 760.6 Mt C in
the vegetated sites and 2420.2 Mt C in the un-vegetated sites, with total soil organic
carbon storage of 3180.8 Mt C. The average carbon sequestration rate of the vegetated
sites was higher than the un-vegetated sites (14.9 and 8.6 g C m
−2 year
−1 ). Based
on the area and carbon sequestration rate, the total carbon sequestration potential
of Lake Borullus was 4.04 Mt C year
−1 . The present study concluded that Lake
Borullus could be instrumental in formulating efficient strategies related to carbon
sequestration and reduction of GHG in Mediterranean wetlands (Fig. 11).