Chinese agriculture is undergoing a transformation process from traditional agriculture into modern agricultrue.This article discusses how land. labor, fertilizer, machinery etc. are used in agricultu
A GIS Based Model for Calculating of Flood Area LIU Renyi, LIU Nan 5Effect of Apple Base on Regional Water Cycle in Weibei Upland of the Loess Plateau 12 HUANG
Beijing, Sep. 10-13, 2002 Organized by: Tsinghua University of China & International Research and Training Center on Erosion and Sedimentation (IRTCES)Sponsored
The paper makes some analyses on 11 trace elements in the Milanggouwan stratigraphical section in the Salawusu River valley, which is regarded as a prototype ge