共 2 条
[1]
Stomatal density responses of temperate woodland plant over the past seven decades of CO2 increase:a comparison of Salisbury (1927) with contemkporary data .2 Beerling D J,Kelly C K. Amer J Bot . 1997
[2]
Changes in the stomatal density of Betula nana leaves in response to increases in atmospheric carbon dioxide concentration since the Late-Glacial, Spec.Pap .2 Beerling,D. J. Pal . 1993