Research on Litter Hydrology Characteristic of Typical Vegetation in Jinyun Mountain in Chongqing City

Litter water retention characteristic can be obtained after survey and analyze, and study the process of water retention capacity of litter in the 4 typical vegetations (mixed wood, broadleaf forest, bamboo forest and shrub forest). The result show that litter amount is shrub forest broadleaf forest mixed wood bamboo forest. The maximum of water retention depth is shrub forest mixed wood broadleaf forest bamboo forest, and the maximum of water retention rate is mixed wood shrub forest broadleaf forest bamboo forest. In the first 2h of water retention capacity of litter, water absorption rate in shrub forest is 1.949 mm/h,1.031 mm/h in mixed wood and broadleaf forest, and 0.809 mm/h in the bamboo forest. So the result show that the water retention capacity of litter in different vegetations in Jinyun mountain natural protection district in the Three Gorges reservoir areas.