Photosynthetic rate,transpiration rate and photosynthetic response of Artemisia gmelinii were measured in the field using the Li-6400 portable photosynthesis system in loess plateau hilly region.The results showed that the diurnal variation of net photosynthetic rate(Pn) was a smooth one-peak curve in sunny day.The peak of photosynthetic rate appeared at 21.19μmolco2·m-2·s-1.The light compensation point(LCP) and the light saturation point(LSP) of Artemisia gmelinii were 44.1μmol·m-2·s-1 and 351μmol·m-2·s-1,...
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