STUDIES ON PROCESS, RESTORATION AND MANAGEMENT OF THE DEGRADING SLOPELANDS ——A CASE STUDY OF PURPLE SOIL SLOPELANDS IN THE THREE GORGES AREAS
Zheng Du, Shen Yuancun
Acta Geographica Sinica . 1998, (2): 116 -122 .  DOI: 10.11821/xb199802003