Ecosystem service value supplied by vegetation for avoiding phosphorus pollution within Xijiang River Basin, Guangxi Regioanl-level scenario simulation of urban expansion and the ecological effects: the case of Guangxi Xijiang River Economic Belt, Southwest China Annual variation pattern of phytoplankton community at the downstream of Xijiang River The investigation and evaluation of natural breed field of Guangdong black myers in Xijiang river Population ecology of Aulacoseira granulata in Xijiang River