Responses of net ecosystem CO 2 exchange to nitrogen fertilization in experimentally manipulated grassland ecosystems

  title={Responses of net ecosystem CO 2 exchange to nitrogen fertilization in experimentally manipulated grassland ecosystems},
  author={Xiaoli Cheng and Yiqi Luo and Bo Su and Paul S. J. Verburg and Dafeng Hui and Daniel Obrist and John A. Arnone and Dale W. Johnson and Richard D Evans},
Nitrogen (N) addition enhances primary productivity of terrestrial ecosystems. However, the effects of N fertilization and/or deposition on net ecosystem CO2 exchange (NEE) are not fully understood. The effects of N on NEE were investigated in two experimental cheatgrass ecosystems in Ecologically Controlled Enclosed Lysimeter Laboratories (EcoCELLs), Reno, Nevada. In this experiment, no N fertilization was added to the two EcoCELLs in the first year and two different N fertilization regimes… CONTINUE READING
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