Effects of human disturbance activities and environmental change factors on terrestrial nitrogen fixation

Agriculture & Biology

• nitrogen fixation 72%
• ecosystems 53%
• soil resources 46%
• net primary productivity 45%
• plant characteristics 41%
• carbon dioxide 41%
• physicochemical properties 27%
• drought 27%
• soil 26%
• terrestrial ecosystems 21%
• total phosphorus 21%
• global change 20%
• meta-analysis 20%
• microbial biomass 19%
• bulk density 17%
• texture 14%
• prediction 12%
• carbon 11%
• nitrogen 10%

Earth & Environmental Sciences

• nitrogen fixation 85%
• fixation 68%
• environmental change 60%
• disturbance 48%
• effect 16%
• soil resource 15%
• physicochemical property 13%
• ecosystem 11%
• drought 10%
• warming 9%
• productivity 8%
• soil 8%
• meta-analysis 7%
• biome 6%
• terrestrial ecosystem 6%
• global change 6%
• bulk density 6%
• plant species 5%
• budget 5%
• carbon dioxide 5%

Chemical Compounds

• Nitrogen Fixation 100%
• Ecosystem 67%
• Soil 59%
• Microbial Biomass 22%
• Bulk Density 16%
• Crystalline Texture 13%
• Phosphorus(.) 11%
• Carbon Dioxide 10%
• Nitrogen 8%
• Carbon Atom 6%
• pH Value 5%