The tropical mountain rain forest located at mid-high altitude with slight anthropogenic disturbance had the highest soil nutrient-holding capacity and integrated soil quality index.

It has the property of strong drought-resistance but can not stand the high soil moisture environment. Therefore, it is a suitable liana to the afforestation in barren mountain area.

Slow melting of frozen soil and exceeding cut of forest may be the factors to speed mountain torrents in region of high latitude.