现代农业地理工程与农业高质量发展——以黄土丘陵沟壑区为例

刘彦随, 冯巍仑, 李裕瑞

Modern agricultural geographical engineering and agricultural high-quality development: Case study of loess hilly and gully region

LIU Yansui, FENG Weilun, LI Yurui

图7 1998年与2018年黄土高原植被指数(NDVI)

Fig. 7 Vegetation index (NDVI) of the Loess Plateau in 1998 and 2018