Different relationships of fine root traits with root ammonium and nitrate uptake rates in conifer forests

Nitrogen (N) uptake by fine roots of trees is important for understanding root physiological function in forest ecosystems. However, direct investigations situ ammonium and nitrate rates are limited. Thus, we aimed to clarify inorganic N among tree species determine the factors controlling through relationships with traits cool temperate coniferous forests. Using a solution depletion method measuring uptake, observed relationship rate form NH4+ NO3– an intact system morphological traits, such as diameter, specific length (SRL), tissue density (RTD). The this study preferred NO3−. Across species, there were significant between SRL, RTD; contrast, only RTD had impact on NO3− uptake. Relationships differed NO3–. We found that depended characteristics adsorbed soil assimilation efficiency. Our results make breakthrough prediction fundamental acquisition strategies.