Table 5 Grouped major SPPs relevant to the nutrient cycle
Grouped (SPPs) | Soil and plant properties (SPPs) |
|---|---|
Soil total NPK | K concentration, K content, N concentration, N content, P concentration, P content, total K, total N, total P |
Soil mineral nitrogen | Ammonification rate, available ammonium, available nitrate nitrogen, exchangeable ammonium, extractable ammonium, N mineralization, nitrate nitrogen rate, nitrification, soil ammonium, soil ammonium concentration, soil ammonium content, soil nitrate nitrogen, soil nitric nitrogen |
Plant nutrient level | Shoot N, Shoot P, Shoot K, K uptake, P uptake, N uptake, plant N |
N2O emission | Nitrous oxide emission |
Soil NPK availability | Available N, available P, available K, dissolved K, dissolved P, exchangeable K, extractable K, extractable P |
Potential CEC | Potential CEC |
Effective CEC | Effective CEC |
Nutrient use efficiency | Nutrient use efficiency |
Mineral N leaching | Cumulative ammonium leaching, cumulative nitrate nitrogen leaching, leached ammonium, leached nitrate nitrogen, nitrate leaching |