Earth & Environmental Sciences
project
86%
drinking water
84%
energy technology
80%
clean development mechanism
75%
carbon
67%
environmental consequence
65%
economics
63%
reforestation
63%
globalization
63%
afforestation
61%
time series analysis
59%
carbon stock
59%
development project
58%
energy saving
58%
technological development
57%
soil carbon
56%
analysis
55%
forestry
54%
timber
54%
evaluation
52%
arsenic
48%
income
48%
price
45%
Asia
44%
tax incentive
43%
vehicle
43%
ozone
43%
policy
41%
emission reduction
40%
passenger transport
39%
water quality
36%
electric vehicle
36%
pollution
35%
macroeconomics
35%
developed country
35%
transition
34%
environmental quality
34%
project management
33%
developing world
32%
subsidy
30%
program
29%
biofuel
28%
integrated approach
27%
prediction
27%
harvest
24%
cost
22%
energy conservation
22%
greenhouse gas emissions
21%
contingent valuation
21%
economy
21%
Agriculture & Biology
willingness to pay
100%
carbon sinks
77%
Pinus densiflora
75%
afforestation
69%
reforestation
67%
soil carbon
66%
drinking water
64%
forest soils
63%
water quality
54%
copper
43%
contingent valuation
33%
sulfates
28%
water
27%
United Nations Framework Convention on Climate Change
26%
iron
24%
households
20%
Korean Peninsula
17%
water quality standards
16%
economies of scale
15%
greenhouse gas emissions
15%
United States Environmental Protection Agency
14%
funding
12%
water treatment
11%
plantations
11%
compliance
11%
water supply
11%
land use change
11%
carbon sequestration
10%
protocols
9%
land use
8%
fractionation
7%
mined soils
7%
planting
7%
vegetation
6%
methodology
6%
hydrology
6%
landfills
5%
degradation
5%
soil organic carbon
5%
