Effects of biochar on soil available inorganic nitrogen: A review and meta-analysis Nguyen, Thi Thu Nhan ; Xu, Cheng-Yuan ; Tahmasbian, Iman ; Che, Rongxiao ; Xu, Zhihong ; Zhou, Xuhui ; Wallace, Helen M. ; Bai, Shahla Hosseini Abstract Publication: Geoderma Pub Date: February 2017 DOI: 10.1016/j.geoderma.2016.11.004 Bibcode: 2017Geode.288...79N