中国农产品贸易结构演化及对粮食安全的影响
王念, 程昌秀, 林耿

Evolving agricultural trade structure and its impact on food security in China
WANG Nian, CHENG Changxiu, LIN Geng
图5 高波动性农产品的可比净出口指数
Fig. 5 Normalized trade balance index of agricultural products with high volatility