长江重庆段河道植物营养元素、污染元素分布和古貌分析  

THE DISTRIBUTION OF NUTRITIVE ELEMENTS AND POLLUTION ELEMENTS IN THE CHONGQING SECTION RIVER CHANNEL OF THE YANGTZE RIVER AND AN ANALYSIS OF THE PALEOGEOMORPHOLOGY

作　　者：赵琦[1] 陈桐军[2] 沈前斌[3] 李雁龙[4] 

机构地区：[1]四川省地质矿产勘查开发局,四川成都610081 [2]四川省地质矿产勘查开发局404地质队,四川西昌615000 [3]四川省地质矿产勘查开发局物探队,四川成都610072 [4]四川省地质矿产勘查开发局攀西地质大队,四川西昌615000

出　　处：《物探与化探》2009年第5期562-568,共7页Geophysical and Geochemical Exploration

摘　　要：重庆市沿江经济带多目标地球化学项目研究表明,长江河道内为偏碱性的植物营养元素富集的沃土,是名优特产发育各具特色的"黄金河道"。该江段水系是污染元素(特别是Cd)的高含量区。古代该区段长江江水曾经倒流,三峡、涪陵珍溪有古水坝,万州以北有古河道发育。Multi-objective geochemical researches of the Chongqing economic zone along the Yangtze River show that the Yangtze River channel is a fertile soil and a ＂gold river channel＂ with the enrichment of meta-alkaline plant nutritive elements and the development of famous and high-quality special local products. Nevertheless, the water system of this river section has high content of pollution elements （ especially Cd）. In ancient time, the river water in this section was once flowing backwards. In the Three Gorges and Zhenxi area of Fuling, there exist ancient dams, and in north of Wanzhou, ancient river channels are well developed.

关 键 词：植物营养元素 污染元素 长江古貌 重庆市长寿—巫山长江段 

分 类 号：P632[天文地球—地质矿产勘探]