Earth & Environmental Sciences
cultivation system
84%
shifting cultivation
74%
fallow
66%
soil fertility
60%
restoration
42%
carbon
25%
soil carbon
23%
fallow area
19%
fallow land
16%
conservation policy
13%
crop residue
13%
nitrogen
13%
resource
12%
cropping practice
11%
carbon sequestration
10%
management practice
10%
rice
9%
household
9%
material
9%
document
8%
plateau
8%
land use
7%
vegetation
6%
monitoring
5%
trend
5%
soil
4%
effect
2%
method
2%
Business & Economics
Shifting Cultivation
100%
Soil Fertility
85%
Lao PDR
85%
Carbon
61%
Restoration
46%
Soil
33%
Nitrogen
25%
Crop Residues
16%
Vegetation
14%
Carbon Sequestration
14%
Conservation Policy
13%
Resources
11%
Land Use
9%
Longitudinal Study
9%
Management Practices
7%
Monitoring
6%
Household
6%
Agriculture & Biology
shifting cultivation
79%
Laos
71%
fallow
59%
soil fertility
52%
highlands
52%
permanganates
23%
carbon
21%
root residues
12%
longitudinal studies
9%
soil carbon
9%
carbon sinks
9%
nitrogen
9%
carbon sequestration
9%
crop residues
8%
soil
8%
land use
7%
households
7%
population growth
7%
plateaus
7%
vegetation
6%
rice
5%
duration
5%
monitoring
5%
methodology
2%
Social Sciences
Laos
70%
restoration
59%
fertility
47%
land use
11%
resources
9%
conservation
9%
longitudinal study
8%
monitoring
8%
trend
5%
management
5%
Chemical Compounds
Soil Fertility
99%
Carbon Atom
26%
Soil
20%
Nitrogen
9%
Length
4%
Pressure
4%
Surface
2%