Carbon stock potential of scattered trees on farmland along an altitudinal gradient in Tigray, Northern Ethiopia

Ecological Processes

Table 1 Characteristics of the five altitudinal gradients of the studied scattered tree on farmland in the Western zone of Tigray, Northern Ethiopia

Characteristics	Elevation (m a.s.l)
Characteristics	2500–3000	2000–2500	1000–1500	1500–1000	1000–500
Slope (Min-Max %)	2–30	2–30	0–30	0–30	0–30
Farming system	Mixed	Mixed	Mixed	Mixed	Mixed
Major crop type	Wheat (Triticum aestivum), Barley (Hordeum vulgare), Teff (Eragrostis tef)	Wheat (Triticum aestivum), Barley (Hordeum vulgare), Teff (Eragrostis tef)	Sesame (Sesamum indicum), sorghum (Sorghum bicolor)	Sesame (Sesamum indicum), sorghum (Sorghum bicolor), cotton (Gossypium)	Sesame (Sesamum indicum), sorghum (Sorghum bicolor), cotton (Gossypium)
Annual temp (Min-Max).	5.90–22.53 °C	11.63–30.16 °C	17.78–32.31 °C	22.32–35.27 °C	25.05–42.52 °C
Annual rainfall	2316 mm	1380 mm	653 mm	615 mm	609 mm
Major soil type	Nitosol and Leptosol	Nitosol, Leptosol and Luvisols	Leptosol and Luvisols	Leptosol and Luvisols	Vertisol, Cambisol and Luvisols
Dominant trees and/or shrubs species	Acacia abyssinica subsp. abyssinica, Maytenus arbutifolia and Eucalyptus camaldulensis	Cordia africana, Ficus sycomorus and Croton macrostachyus	Diospyros mespiliformis, Anogeissus leiocarpus and Acacia bussei	Boswellia papyrifera, Balanites aegyptiaca and Dalbergia melanoxylon	Pterocarpus leucens, Ziziphus spinachristi and Combretum sp.