Agriculture & Biology
organic nitrogen
92%
sediments
70%
organic matter
68%
lakes
62%
phosphorus
56%
China
48%
total nitrogen
46%
total phosphorus
27%
water quality
15%
nutrients
9%
surface water
8%
fish feeds
7%
nitrogen content
7%
aquaculture
7%
nutrient content
6%
pollution
6%
water
3%
Engineering & Materials Science
Biological materials
100%
Sediments
93%
Phosphorus
91%
Lakes
88%
Nitrogen
70%
Nutrients
28%
Water quality
18%
Aquaculture
10%
Surface waters
10%
Fish
8%
Impurities
7%
Pollution
7%
Chemical analysis
4%
Earth & Environmental Sciences
organic nitrogen
84%
phosphorus
54%
organic matter
50%
lake
44%
sediment
36%
nitrogen
30%
distribution
27%
nutrient
16%
index
12%
water quality
11%
aquaculture
8%
lacustrine deposit
7%
surface water
5%
pollution
5%
province
5%
fish
5%
indicator
5%
pollutant
4%
calculation
4%
need
4%
project
4%
water
2%
Chemical Compounds
Organic Matter
81%
Phosphorus(.)
63%
Nitrogen
34%
Nutrient
30%
Surface
24%
Surface Water
10%
Indicator
8%
Weight
5%