
Emergy Analysis of Agroecosystem Productivity of Typical Valley in Loess Hilly-gully Region of the Loess Plateau: A Case Study in Zhifanggou Valley of Ansai County
DONG Xiaobin, GAO Wangsheng, YAN Maochao
Acta Geographica Sinica ›› 2004, Vol. 59 ›› Issue (2) : 223-229.
Emergy Analysis of Agroecosystem Productivity of Typical Valley in Loess Hilly-gully Region of the Loess Plateau: A Case Study in Zhifanggou Valley of Ansai County
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