TY - Journal of Yangtze River Scientific Research Institute A1 - JI Xiao-yan, PENG Dan T1 - Variation Characteristics of Total Phosphorus Concentration in the Yangtze River Basin in the Thirteenth Five-Year Plan Period Y1 - 2022-08-01 JF - Journal of Yangtze River Scientific Research Institute JO - Journal of Yangtze River Scientific Research Institute SP - 1 EP - 9 VL - 39 IS - 8 UR - http://ckyyb.crsri.cn N1 - 10.11988/ckyyb.20220083 ER -