Soil temperature in an open site and below two plantation forest canopies in a tropical highland area, southern Ethiopia
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This paper examines soil temperature (Ts) in two different plantation forests relative to an adjacent open land area in a tropical highland environment. To achieve the objectives, Ts in a Juniperus procera (JP) plantation, a Grevillea robusta (GR) plantation, and in the adjacent open land (OL) area were measured. One-way ANOVA and Pearson’s correlation were used for the data analysis. The result indicated that the mean daily Ts in the OL area at 10-cm depth of the soil was greater than the mean daily Ts recorded in the JP and GR plantations by 5 °C and 6 °C, respectively. The OL area Ts recorded at different soil depths (10 cm and 20 cm) was significantly different (p < 0.05). Rainfall (RF) and air temperature (Ta) of the study area have a direct relationship with the Ts in the plantation forests. The RF and Ta do not have a significant relationship with the Ts in the OL area at 10-cm soil depth. Overall, the study indicated that the Ts in the open land area was highly fluctuating monotonically, while it is relatively constant in the plantation forests.
The Department of Forest Botany, Dendrology and Geobiocoenology is acknowledged for supporting this research. The Wondo Genet College of Forestry and Natural Resources is acknowledged for allowing us to carry out this study in the plantations and also for the provision of meteorological data. EMS Brno is highly acknowledged for all the supports. Our thanks are to Jiří Kučera, Josef Urban, Agena Angelo, Adane Dinku, and Abraham Yirgu for all their help. Thanks to Ashenafi Burka for his assistance with the fieldwork, and Nesib Yahya for producing the map of the study area. Thanks also to the American Journal Experts for editing the language of the manuscript.
This study was financed by the Interni Grantova Agentura of Mendel University in Brno, Czech Republic, with a project code of 52/2010.
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