Abstract: The response of soil carbon and nitrogen decomposition to temperature change is crucial for the impact of climate change on terrestrial ecosystem carbon sink. In this paper, the mechanisms and hypotheses about the effects of temperature change on the decomposition of soil carbon and nitrogen were reviewed. The mechanisms mainly include the functions of the stability, quality, and availability of soil organic matter (SOM), the biomass, activity, community structure, and diversity of soil microbes, the water content in soil, the productivity of vegetation and litter, and the soil pH. There are still uncertainties for the mechanisms about the effects of temperature change on the decomposition of soil carbon and nitrogen, and it is necessary to consider the SOM fractions with different stability, the features of microbes, the interactions between SOM fractions and soil microbial features, and the differences of the longterm and shortterm responses of soil carbon and nitrogen decomposition to temperature change. The hypotheses about the effects of temperature change on the decomposition of soil carbon and nitrogen include carbon qualitytemperature hypothesis, physical-chemical hypothesis, and functional shift hypothesis. Further researches and experiments are necessary to test and improve these hypotheses.

Key words: Plant, Aluminium toxicity, Genetic difference, Physiological and molecular mechanism of aluminium resistance