黄土高原退耕还林(草)紧迫性地域分级论证

彭文英, 张科利, 李双才

Studies of the regional classification about returning farmland to forests or grassland on the Loess Plateau

PENG Wen-ying, ZHANG Ke-li, LI Shuang-cai

自然资源学报 . 2002, (4): 438 -443 . DOI: 10.11849/zrzyxb.2002.04.007