2.2. Layout of the experiment
The study deals with the dominating vegetation covers and slope gradients in the study area. Table 1 shows the investigated levels of the study factors, for both the vegetation cover and slope gradient. The experiment was carried out on the dominating yellow-brown soil (a sandy-loam soil with 60, 25 and 15% sand, silt and clay, respectively) in the study area. Based on land use and contour maps, a map was constructed to facilitate the identification of the location of the different vegetation covers and their slope gradient. In the field, a re-check of the location and slope gradient of the identified vegetation covers were made. Only those vegetation covers which had had uniform slope-form were determined in the map. From the combinations of the vegetation cover and slope gradient, a selection of the experimental units was made at random. As the dominant slope class was the moderate, three experimental units from each vegetation cover level were selected at random. For the other two slope classes (slight and steep), only two units were randomly selected from each level of the vegetation cover (Fig. 2). However, as agriculture activities had been ceased at steep slopes, agriculture lands with slopes exceeding 30° could not be found. In total, 33 experimental units were selected. The underlying experimental design is a Completely Randomised Factorial Design with unequal number of replicates.
2.2. Layout of the experiment
The study deals with the dominating vegetation covers and slope gradients in the study area. Table 1 shows the investigated levels of the study factors, for both the vegetation cover and slope gradient. The experiment was carried out on the dominating yellow-brown soil (a sandy-loam soil with 60, 25 and 15% sand, silt and clay, respectively) in the study area. Based on land use and contour maps, a map was constructed to facilitate the identification of the location of the different vegetation covers and their slope gradient. In the field, a re-check of the location and slope gradient of the identified vegetation covers were made. Only those vegetation covers which had had uniform slope-form were determined in the map. From the combinations of the vegetation cover and slope gradient, a selection of the experimental units was made at random. As the dominant slope class was the moderate, three experimental units from each vegetation cover level were selected at random. For the other two slope classes (slight and steep), only two units were randomly selected from each level of the vegetation cover (Fig. 2). However, as agriculture activities had been ceased at steep slopes, agriculture lands with slopes exceeding 30° could not be found. In total, 33 experimental units were selected. The underlying experimental design is a Completely Randomised Factorial Design with unequal number of replicates.
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