中文摘要：

氮(N) 和磷(P) 是抑制的主要营养素生态系统的植物生长和开发，以及结构和功能。因此，叶 N 和 P 模式能贡献植物营养素地位，生态系统的滋养的限制类型，植物生活历史策略和功能的组的区别的深理解。然而，在 N 缺乏荒芜的生态系统的叶 N 和 P stoichiometry 的地位和模式仍然保持不清楚。在这上下文下面，叶在 Karamori 山蹄状的自然保护区从 57 植物种类取样，东方 Junggar 沙漠，中国被调查，叶 N 和 P 的模式和相互关系比较地被分析。结果证明一般水准长叶 N 集中， P 集中，和 N : P 比率是 30.81 mg/g， 1.77 mg/g 并且 17.72 分别地。这研究发现叶 N 集中和 N : P 比率比在全球、国家、地区性的规模进行的研究的那些显著地高；然而，叶 P 集中在中等水平。叶 N 集中 allometrically 与叶 P 和 N 被相关: 越过所有种的 P 比率。叶 N， P 集中和 N : P 比率在植物之中不同到某个程度功能的组。C4 植物和灌木，特别地有吸收分支的灌木，没有吸收分支， C3 植物，植物和灌木比那些显示出显然更低的 P 集中。有吸收分支的灌木也有更低的 N 集中。Fabaceae 植物有最高的叶 N， P 集中(象 Asteraceae 一样) 并且 N : P 比率；另外的家庭有类似的 N， P-stoichiometry。在这研究的土壤被 N 的缺乏描绘(全部的 N : P 比率是 0.605 ) ，但是与 P 相比有高 N 可获得性(即可得到的 N : P 比率是 1.86 ) 。这可能解释植物叶子为什么有高 N 集中(叶 N : P 比率 > 16 ) 。在结论，在在这研究的极端环境的荒芜的植物在与他们的生活历史策略的关系形成了他们的内在、特殊的 stoichiometric 特征。

英文摘要：

Nitrogen （N） and phosphorus （P） are the major nutrients that constrain plant growth and development, as well as the structure and function of ecosystems. Hence, leaf N and P patterns can contribute to a deep understanding of plant nutrient status, nutrient limitation type of ecosystems, plant life-history strategy and differentiation of functional groups. However, the status and pattern of leaf N and P stoichiometry in N-deficiency desert ecosystems remain unclear. Under this context, the leaf samples from 57 plant species in the Karamori Mountain Ungulate Nature Reserve, eastern Junggar Desert, China were investigated and the patterns and interrelations of leaf N and P were comparatively analyzed. The results showed that the average leaf N concentration, P concentration, and N：P ratio were 30.81 mg/g, 1.77 mg/g and 17.72, respectively. This study found that the leaf N concentration and N：P ratio were significantly higher than those of studies conducted at global, national and regional scales; however, the leaf P concentration was at moderate level. Leaf N concentration was allometrically correlated with leaf P and N：P ratio across all species. Leaf N, P concentrations and N：P ratio differed to a certain extent among plant functional groups. C4 plants and shrubs, particularly shrubs with assimilative branches, showed an obviously lower P concentration than those of C3 plants, herbs and shrubs without assimilative branches. Shrubs with assimilative branches also had lower N concentration. Fabaceae plants had the highest leaf N, P concentrations （as well as Asteraceae） and N：P ratio; other families had a similar N, P-stoichiometry. The soil in this study was characterized by a lack of N （total N：P ratio was 0.605）, but had high N availability compared with P （i.e. the available N：P ratio was 1.86）. This might explain why plant leaves had high N concentration （leaf N：P ratio〉16）. In conclusion, the desert plants in the extreme environment in this study have formed their intr