Research Status and Trend Analysis of Grassland Ecological Protection in China——Based on the Journal Literature Data from CNKI Database（1992-2021）

NING Ying, TIAN Yan-li

Animal Husbandry and Feed Science . 2021, (6): 68 -75 . DOI: 10.12160/j.issn.1672-5190.2021.06.013