Emergy Amalysis of Agricultural Eco-Economic System in Arid Region of Northwest China——A Case Study of Zhangye Prefecture in Heihe River
CHEN Dong-jing, XU Zhong-min
Journal of Glaciology and Geocryology ›› 2002, Vol. 24 ›› Issue (4) : 374-379.
Emergy Amalysis of Agricultural Eco-Economic System in Arid Region of Northwest China——A Case Study of Zhangye Prefecture in Heihe River
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