Table 1: Comparative studies on carbon sink value of different agroforestry systems in developed and developing countries of the world.

Agroforestry models in developing countries Soil carbon sink value (US ton/ha) Reported authors
Central Indian sub-continent comprised Gmelina tree based Agri-silviculture models 30.20 Swamy and Puri [27]
Homegarden based agroforestry system in the Panama city, U.S.A. 49.60 to2.50 Kirby and Potvin [28]
Homegarden based agroforestry system in the African continent 220.5 Nair [29]
Silvopastoral model in African continent 1.65-3.85
Poplar (Populus deltoides) and Soybean + maize + wheat based hedgerow intercropping system in Canada 1.38   Oelbermann, et al. [30]
Silvopastoral model having combination of Pinus elliottii and Paspalum notatum (common grass species) in the region of U.S.A. 7.60 to 26.7 Haile, et al. [31]
Mixed tree stands of Eucalyptus + Casuarina equisetifolia in the region of Puerto Rico situated in U.S.A. 68.23 Parrotta [32]
Mixed tree stands of Leucaena leucocephala (Subabul) + Casuarina equisetifolia in the region of Puerto Rico situated in U.S.A. 62.39
Mixed tree stands of Leucaena leucocephala (Subabul) + Eucalyptus in the region of Puerto Rico situated in U.S.A. 68.01
Cork oak (Quercus suber) based Silvopastoral model in the region of Spain 29.21 to 55.3 Howlett [33]
Betula pendula based Silvopastoral model in the region of Spain 146.6 to 165.3 Howlett, et al. [34]
Eucalyptus + Brachiaria (grass species) based Silvopastoral model in Brazil 389.1 Tonucci, et al. [35]
Varying Silvopastoral models in the region of U.S.A 564.4 Haile, et al. [36]
Populus deltoids (Poplar tree) based Alley-cropping system distributed in the Canada 62.83 Bambrick, et al. [37]
Populus deltoids based Agri-silviculture model in the region of Punjab, India 10.4 Chauhan, et al.[38]
Leucaena leucocephala (Subabul) based Agri-silviculture model in the region of Andhra Pradseh, India 3.05 Rao, et al. [39]
Acacia nilotica (babul) based Silvopastoral model in the region of Haryana of Indian sub-continent. 3.09 Kaur, et al. [40]
Homegardens of Kerala in India 1.76 Saha, et al.[41]
Casuarina equisetifolia based Agri-silviculture model in Tamilnadu of Indian subcontinent 1.73 Viswanath, et al. [42]
Brachiaria brizantha + Guazuma ulmifolia + Cordia alliodora based Silvopastoral model in the region of Costa Rica 145.5 Amezquita, et al. [43]
Acacia mangium + Arachis pintoi (fodder species) based Silvopastoral model in Costa Rica 190.7
Populus deltoids (poplar tree) + Hordeum vulgare (barley) based Agri-silviculture model in the region of Canada 86.5 Peichl, et al. [44]
Douglas fir (Pseudotsuga menziesii) + Trifolium subterraneum based Agri-silviculture model in the region of USA 105.8 Sharrow and Ismail [45]
Leucaena leucocephala (N2 fixing leguminous tree) based Alley-cropping system in the African continent 14.9 Lal [46]

The practices of fodder/protein bank system comprising the combination of Pterocarpus marsupium + Gliricidia sepium species in the region Mali

36.81 Takimoto, et al. [47]
Gliricidia trees + Zea mays based Agri-silviculture model in Malawi 135.6 Makumba, et al. [48]