Evaluating the Marginal Land Resources Suitable for Developing Bioenergy in Asia

Table 2

Growing conditions of energy plants.

Growing conditions	Cassava [24]		P.  chinensis [52, 53]		JCL [54–56]
	Suitable	Moderately suitable	Suitable	Moderately suitable	Suitable	Moderately suitable
Meteorological data
Annual average temperature/°C	21~29	18~21	10~15.3	5.8~10 or 15.3~28.4	20~25	17~20
Average annual extreme lowest temperature/°C	—	—	≥−15	−26.5~−15	≥2	0~2
Accumulated temperature of 10/°C·d	—	—	≥3800	1180~3800	—	—
Precipitation/mm	1000~2000	600~1000 or 2000~6000	400~1300	1300~1900	600~1000	300~600 or 1000~1300
Soil data [51]
Soil depth/cm	≥75	30~75	≥60	30~60	≥75	30~75
Soil organic matter content/%	≥3.5	1.5~3.5	—	—	≥3.5	1.5~3.5
Soil texture/classes	1	2	—	—	1	2
Terrain
Elevation/m	≤1500	1500~2000	—	—	≤500	500~1600
Slope/°	≤15	15~25	≤15	15~25	≤15	15~25