In large scale, plant stoichiometry is mainly affected by latitude and longitude. Many works has have been done to study the effects of temperature on plant stoichiometry along the latitude gradient, while researches on the precipitation along the longitude gradient are rare. In this research, we studied the stoichiometry characteristics of grassland communities along the longitude gradient in Hulunbeir. The results showed as follow: 1) the range of leaf carbon was 440. 76-452. 72 mg / g, leaf nitrogen was 17. 79-30. 88 mg / g,and leaf phosphorous was 1. 31-1. 71 mg / g. Both the leaf carbon and C / N
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