Agriculture & Biology
tropical rain forests
97%
soil types
82%
terrace soils
30%
catenas
27%
soil map
26%
soil
25%
upland soils
24%
sampling
23%
alluvial soils
23%
terraces
22%
geographic information systems
20%
weathering
20%
edaphic factors
19%
Central America
17%
Costa Rica
17%
valleys
15%
highlands
15%
demographic statistics
15%
geographical distribution
13%
Earth & Environmental Sciences
rain forest
100%
soil type
35%
distribution
29%
tropical rain forest
29%
slope angle
26%
terrace
14%
soil
12%
catena
10%
residual soil
9%
soil map
9%
Central America
8%
environmental gradient
8%
parent material
8%
geographic information system
6%
weathering
6%
flooding
5%
watershed
5%
valley
5%