TY - Front. Agric. China A1 - SHANG Zhanhuan, LONG Ruijun T1 - Formation causes and recovery of the “Black Soil Type” degraded alpine grassland in Qinghai-Tibetan Plateau Y1 - 2007-06-05 JF - Frontiers of Agriculture in China JO - Front. Agric. China SP - 197 EP - 202 VL - 1 IS - 2 UR - https://journal.hep.com.cn/fag N1 - 10.1007/s11703-007-0034-7 ER -