LAUSR

The Changbai Mountain tundra, which is located in the upper part of the Changbai Mountain volcanic cone (2000—2500m), is the only typical alpine tundra in eastern China, and because its environmental characteristics are similar to those of polar tundra, the Changbai Mountain tundra is highly valuable for scientific research. Herbaceous species invasion has been found in both polar tundra and alpine tundra, this phenomenon may caused by the climate change. In general, there is a close correlation between tundra vegetation and soil, the change of vegetation community structure directly or indirectly led to changes in soil properties. The progression of invasion resulted in a decrease in the organic matter content. The growth of tundra vegetation is affected by both temperature and soil composition ( i. e., nutrients), whereas the composition of the plant community affects local soil processes. The vegetation of the Changbai Mountain tundra is undergoing significant changes in response to global climate change. On the western slopes of the mountain, herbaceous plants have become invasive and have expanded their distribution, whereas the importance of shrubs as the dominant plant type has been significantly reduced. The present study investigated the relationship between herbaceous plant invasion and soil properties in 100m × 1600m transects and 132 plots in August 2014. The latitude, longitude, and elevation of the