TP79 98010171地理信息系统和遥感技术支持下的山地环境梯度分析方法研究=The method of mountainenvironment gradient analysis based on geographieinformation systems and remote sensingtechnology/刘卫国,吕鸣伦//地理研究一1997,26(3)一63~69图2表3参7(力敏)BeP934、98010172横断山区土壤地球化学及元素含t~Geoehemistryand element eontents of 5011 in HengduanMountainous Regi