Impact of biochar addition on water use efficiency, biological nitrogen fixation and growth of understory Acacia leiocalyx and Acacia Disparimma in a suburban native forest of subtropical Australia - Taresh, Sabah; Bai, Shahla Hosseini; Kichamu-Wachira, Edith; Xu, Zhihong (Journal of Soils and Sediments, 2025)