| 8 | THE SYSTEMATIC DYNAMIC EMULATION ON THE AGRICULTURAL DEVELOPMENT ON THE LOESS PLATEAU显示文摘The Loess Plateau, covered with thick loess, lies in the middle reaches of the YellowRiver to the west of the Taihangshan Mountains, east of the Wuqiao Mountains south ofYinshan Mountains and north of the Qinling Mountains with a total area of 56×10~4km^2.The plateau is 1000--2500m above sea level and has loess as thick as 100--200 metres, be- | Lin Haiming Huang Gaobao Chen Yuan Yu Shiming Gansu Agricultural University, Lanzhou, 730070 | 1993 | 干旱区资源与环境1993，7，Z1： | 0 |
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