粮食安全:西北地区退耕对粮食生产的可能影响
封志明, 张蓬涛, 宋玉
Food security:the impact of land conversion from farmland to forest or grassland on grain production in Northwest China
FENG Zhi-ming, ZHANG Peng-tao, SONG Yu
自然资源学报
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2002, (3): 299
-306
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DOI: 10.11849/zrzyxb.2002.03.007
