| The differences of specific leaf area and N content in leaf of Artemisia ordosica under different stage of sand dunes were analyzed. Soil moisture, soil nutrient content, and mechanical composition under different stage of sand dunes were also analyzed at the same time. The results showed that leaf N of A. ordosica increased with the degree of sand fixation, however, no significant difference existed between fixed and semi-fixed sand dunes, which were significantly lower than in the shifting dunes; soil moisture got worse with the increase of sand fixation, while organic matter, total N, and fine sand in soil increased with the fixation stage increasing. The increasing leaf N content of A. ordosica with the fixation degree could make the plants in poor soil moisture get considerable efficiency of water using, as well as these with rich soil moisture, which meant A. ordosica in the same area could have different survival strategies because of environmental
heterogeneity. |
