金露梅（Potentilla fruticose）是在世界范围内亚高山高山分布广泛的灌木植物，也是我国青藏高原高寒灌丛的建群种之一。在青藏高原2550-5200m海拔进行金露梅的野外采样，测定植物功能属性，包括形态属性（株高、冠幅、比叶面积和叶片干物质含量）和化学计量属性（叶、花和茎中的碳、氮、磷元素含量），结果表明：（1）金露梅形态属性与海拔负相关，而化学计量属性随器官而异。随海拔升高，金露梅叶和花的碳（C）含量均显著降低，叶、花和茎的磷（P）含量均显著上升；叶氮（N）含量在1.3%到3.0%之间波动，花N含量表现出大致以海拔3950m为拐点的先上升后下降的二次变化趋势；茎的C和N含量变化不明显。（2）冠幅、株高的变异系数最大，为敏感属性，化学计量属性则为惰性属性。叶和茎中化学计量属性的变异系数在高海拔较大，低海拔较小，花的变异系数较为稳定且最小。（3）环境因子中，年均温对叶N含量有显著的负效应，年降水量对叶N含量有显著的正效应，并且叶、花和茎中的P含量均随温度降低而增加，符合温度—植物生理假说，即N和P增加可补偿由于温度降低引起的生物化学反应速率的降低。研究推测，在全球变暖的背景下，金露梅在青藏高原可能进一步向高海拔、更干旱的生境扩张。

Potentilla fruticose is a shrub widely distributed in subalpine and alpine regions in the world, and it is also one of the constructive species of alpine shrub in Qinghai-Tibet Plateau. The field sampling of Potentilla fruticose was carried out at the altitude of 2550-5200 meters on Qinghai-Tibet Plateau. Plant functional traits were determined, including morphological traits (plant height, crown width, specific leaf area and leaf dry matter content) and stoichiometric traits (C, N and P content in leaves, flowers and stems). The results showed that: (1) The morphological traits of Potentilla fruticose were negatively correlated with altitude, and the stoichiometric traits varied with organs. With the increase of altitude, the carbon (C) content in leaves and flowers decreased significantly, and the phosphorus (P) content in leaves, flowers and stems increased significantly. The leaf nitrogen (N) content fluctuated between 1.3% and 3.0%, and the flower N content showed a quadratic trend of first increase and then decrease with the altitude of 3950m as the inflection point. The changes of C and N contents in stems were not obvious. (2) The coefficients of variation of crown width and plant height were large, which were the sensitive traits, and the stoichiometric traits were the inert traits. The coefficients of variation of stoichiometric traits in leaves and stems were higher at high altitude, and lower at low altitude. The coefficients of variation of flowers was relatively stable and minimum. (3) In environmental factors, the mean annual temperature had significantly negative effects on leaf N content, and the mean annual precipitation had significantly positive effects on leaf N content, and the P content in leaves, flowers and stems increased with decreasing temperature, consistent with the temperature-plant physiology hypothesis, namely the increase of N and P can compensate for the decrease of biochemical reaction rate caused by temperature decrease. It is speculated that in the global warming, Potentilla fruticose may further expand to higher altitude and more arid habitats in Qinghai-Tibet Plateau.