Abstract:Ecological stoichiometry is the study of the balance of multiple chemical elements in ecological interactions; it is the important content and hotspot in ecology research.Ecological stoichiometry plays an important role in determining plants and ecosystem nutrient supply and demand and their balance.The content of plant chemical element at different organs is restricted by the environmental nutrient availability, especially by the restricted nutrient, and it also affected by plant growth form, the physical characteristics and life history, which is the result of environment and species phylogenesis development together.Study on the plants leaf nutrient content and its variance in extreme environment is important in revealing the plants nutrient requirement and soil nutrient supply capacity, it is also important in revealing the plants adaptability to environment.This study was conducted for 25 artificial plants which from different family and life form in the hinterland of Taklimakan Desert, using variance analysis and correlation analysis together to determine the stoichiometric characteristics and its relationship for plant leaf and soil.The results showed that the mean content of artificial plants leaf C, N, P were (386.7±46.6), (24.7±8.1) and (1.8±0.78) mg/g respectively in Taklimakan Desert, leaf N was significantly higher than those plants which were not desert plants.C:N, C:P were (17.5±6.7), (249.2±102.8) respectively, which were lower than the average of global land plants, and indicated that extreme environment restricted the use of nutrient elements for artificial desert plants.And 14shrub >tree.There was no difference for C:N and N:P between different life forms, while the C:P for shrub and tree functional group were significantly higher than herb functional group.The correlation analysis indicated that leaf C:N, C:P were negatively correlated with N, P content significantly, while no correlation between leaf N and P.Soil nutrient content were significantly lower than other region, especially for soil N content (<0.2 mg/g), significantly positive correlation between soil C and N (P<0.01), and no correlation between soil C and P, N and P (P>0.05).In all, the above results documented that extreme environment of nutrient restricted area limited the plants' nutrients use efficiency, which may be the adaptive strategy for the artificial plants in extreme environments.Besides, different functional group had different adaptability to environment, and significantly nutrient adapt strategy diversity was presented in this study.