Influence of Tropical Climate Parameters on Properties of Acid Sulfate Soils for Sustainable Oil Palm Cultivation

Table 3

Climatic suitability evaluation for oil palm.

Climatic suitability classification^a (Goh [19])<	Highly suitable	Suitable	Moderately suitable	Currently unsuitable	Permanently unsuitable
PPT (mm year^−1)	2000–2500	1700–2000, 2500–3000	1400–1700, 3000–4000	1100–1400, 4000–5000	>5000
MeanT (°C)	26–29	23–26, 29–32	20–23, 32–34	17–20, 34–36	<20, >30
SR (MJ·m^−2)	16–17	14–16, 17–19	11–14, 19–21	8–11, 21–23	<8
WS (m·s^−1)	<10	10–15, 14–16	11–14, 15–25	8–11, 25–40	>40
Water deficit suitability classification^b (Rhebergen et al. [25])	Optimal	Favorable	Suitable	Unsuitable
WD (mm)	<150	<250	<400	>400
Ideal climate requirement^c (Hartley [46])	Range
MaxT (°C)	29–33
MinT (°C)	22–24

^aPPT = annual precipitation; MeanT = annual mean temperature; SR = daily solar radiation; WS = annual wind speed. ^bWD = annual water deficit. ^cMaxT = annual maximum temperature; MinT = annual minimum temperature.