华北农牧交错区粮食生产与人口承载力的解析研究
杜 雄1,2,柴 青3,孙小诺4,孙 建5,张永升1,张立峰1,2
Analysis of the relation between food production and population carrying capacity in the agro-pastoral ecotone of North China
DU Xiong1, 2,CHAI Qing3,SUN Xiao-nuo4,SUN Jian5,ZHANG Yong-sheng1,ZHANG Li-feng1,2
河北农业大学学报
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2009, (6): 1
-7
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