国际粮食贸易影响下东北黑土地生产压力变化与保护策略

邓祥征, 梁立, 廖晓勇, 刘玉洁, 李志慧, 岳天祥, 董金玮, 孙志刚, 陈明星

Research on changes in grain production pressure and protection strategies in the black soil region of Northeast China under the influence of international grain trade

DENG Xiang-zheng, LIANG Li, LIAO Xiao-yong, LIU Yu-jie, LI Zhi-hui, YUE Tian-xiang, DONG Jin-wei, SUN Zhi-gang, CHEN Ming-xing

图2 2004—2019年全国及三大平原TC变化 注：数据来源于中国商务部对外统计贸易司。由于缺失城市一级农产品贸易数据,东北平原数据基于黑龙江、吉林和辽宁三省（覆盖了我国79.45%的黑土地区）的农产品贸易额测算。

Fig. 2 Changes of trade advantage index (TC) of agricultural products in China and the three plains during 2004-2019