Discussion on the integration and optimization of natural reserves under the national park system：Take Sanmenxia city as an example

SHI Yi-bo, GUO Yue, LIU Chang, LIU Yi-ping, KONG De-zheng

HUBEI AGRICULTURAL SCIENCES . 2021, (10): 180 -183 . DOI: 10.14088/j.cnki.issn0439-8114.2021.10.037