TY - Journal of Ecology and Rural Environment A1 - LI Shao-ning, LU Shao-wei, ZHAO Yun-ge, ZHAO Na, CHEN Bo T1 - Characteristics and Influencing Factors in Sap Flow of Four Broadleaved Tree Species for Typical Weather Conditions of Beijing Y1 - 2019-02-25 JF - Journal of Ecology and Rural Environment JO - Journal of Ecology and Rural Environment SP - 189 EP - 196 VL - 35 IS - 2 UR - http://www.ere.ac.cn N1 - 10.19741/j.issn.1673-4831.2017.0869 ER -