A PRELIMINARY STUDY ON THE CONDITIONS AND LOSSES OF NUTRIENTS OF PURPLE SOILS IN THREE GORGE RESERVIOR AREA(TGRA)
Cai Chongfa, Ding Shuwen, Zhang Guangyuan, Huang Li, Wang Daohe
GEOGRAPHICAL RESEARCH . 1996, (3): 77 -84 .  DOI: 10.11821/yj1996030011