Table 3. Values, references, and timescales for aboveground (ABG) C storage for different land-use types in the humid tropics.
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|
Land-use type |
ABG C (Mg ha-1) |
Source |
Period (years) * |
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|
Forest |
80 † |
Marín-Spiotta et al. (2007) |
|
|
|
172; 155; 191; 264 † |
Hughes et al. (2000) |
|
|
|
235 |
Kirby and Potvin (2007) |
|
| |
|
Agroforest |
82 |
Kirby and Potvin (2007) |
|
| |
|
Pasture |
14; 23; 14; 4.4; 3.9; 3.1; 18 † |
Hughes et al. (2000) |
|
|
|
4.2 |
Kirby and Potvin (2007) |
|
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|
Teak plantation |
98; 128; 122; 94 |
Kraenzel et al. (2003) |
20 |
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|
Secondary forest |
24; 62; 45; 83; 125 † |
Marín-Spiotta et al. (2007) |
10; 20; 30; 60; 80 |
|
|
2.1; 28; 17; 51; 11; 137; 41; 129; 104; 122; 136 |
Hughes et al. (1999) |
0.5; 4; 8; 8; 10; 16; 20; 20; 26; 30; 50 |
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|
Enrichment planting |
113 |
Our estimate |
Planted trees: 20
Sec. forest: >40 |
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* Forest, agroforest, and pasture assumed to hold a constant quantity of C. † C content calculated from biomass and ratio of C content.
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