Dynamics of Nitrogen and Phosphorus Content during Leaf Litter Decomposition in Xiangxi River Watershed,the Three Gorges Region Comparison of leaf decomposing rate in a headwater stream in Xiangxi River catchment River continuum characteristics of Xiangxi River Investigation on Phytoplankton in Xiangxi River Watershed and the Evaluation of Its Water Quality A preliminary assessment on the Xiangxi River ecosystem services Impact of cascade hydropower stations on suspended particulate matter in Xiangxi River On Spatial Pattern of Species Richness in Plant Communities Along Riparian Zone in Xiangxi River Watershed Leaf litter decomposition dynamics of different tree species in Xiangxi River watershed, the Three Gorges region Seasonal Dynamics of Litter in a Headwater Stream of Riparian Forest in Xiangxi River Catchment