安徽宁国地区岩-土系统元素迁移及其农业地质环境效应

徐小磊; 戴圣潜; 刘家云; 陆晓三; 储东如; 路玉林; 周存亭

安徽宁国地区岩-土系统元素迁移及其农业地质环境效应

1.
中国地质大学地球科学学院, 湖北武汉 430074
2.
安徽省地质调查院, 安徽合肥 230001

基金项目:

国家自然科学基金项目 40372079

国家自然科学基金项目 40472151

国家自然科学基金项目 90411005

中国地质调查局地质大调查项目 1212010310305

安徽省国土资源厅地质勘查专项项目 2002—7

详细信息

作者简介:
徐小磊(1955—), 男, 博士生, 教授级高级工程师, 主要从事地质环境、遥感地质、农业地质等工作

中图分类号: P59
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- 被引次数: 0
出版历程
- 收稿日期: 2004-07-16
- 刊出日期: 2005-03-25

Movement of Elements in a Rock-Soil System and the Effects of a Geological Environment on Agriculture in the Ningguo Region, Anhui Province

1.
Faculty of Earth Sciences, China University of Geosciences, Wuhan 430074, China
2.
Anhui Geological Survey Institute, Hefei 230001, China

摘要

摘要: 通过多条基岩-土壤剖面和区域性土壤地球化学样品的微量元素丰度测试, 分析了宁国地区不同基岩类型地球化学元素在岩石和土壤中分布的基本特点, 表明同一地层的岩-土系统在不同地点有基本相同的元素迁移规律, 导致土壤中的微量元素分布特征受控于其下地质单位的空间分布, 植物生长必需的微量营养元素Fe、Mn、Cu、Mo、Zn、B6种元素表现出在南华纪-寒武纪地层中向土壤强烈富集的趋势.岩-土系统元素迁移特点对宁国市天目山区重要名优特产品-山核桃的生长环境产生重要影响, 该区主导性名特优产品——山核桃, 应该选择南沱组、兰田组、杨柳岗组、华严寺组、西阳山组等地层出露的地段种植才能产生好的经济效益.
- 岩-土系统 /
- 元素迁移 /
- 地球化学 /
- 地质环境 /
- 农业地质
Abstract: How the movement of elements in a rock-soil system affects agriculture in a given geological environment is an entirely new study subject in petrology and geochemistry. This paper generalizes the fundamental features of the geochemical distribution of elements in various soil and rock types in the Ningguo region, Anhui Province, by means of the measurement of trace element abundance in bedrock-soil sections. The results show the regular movement patterns of elements in a rock-soil system in this region. Six trace elements Fe, Mn, Cu, Mo, Zn and B, indispensable to plant growth, are abundant in soil. It shows that, in Nanhuan system-Cambrian system, Fe, Mn and Cu are abundant in soil. This clearly suggests that the movement of elements in a rock-soil system significantly affects the growth environment of well-known agricultural, and forest products in Tianmu Mountains of Ningguo region. Walnuts, the leading product in Tianmu Mountains, are suited to the soil in the area of the Nantuo, Lantian, Yangliugang, Huayansi and Xiyangshan formations.
- rock-soil system /
- movement of element /
- geochemistry /
- geological environment /
- agricultural geology

HTML全文

图 1 宁国地区地质简图

1.燕山期花岗岩；2.断层；Nh_1x.休宁组；Nh_2n.南沱组；Z₁l.蓝田组；Z₂_1p.皮园村组；_₁h—d.荷塘组、大陈岭组并层；_2y.杨柳岗组；_3h.华严寺组；_₃O₁x.西阳山组；O_1y.印诸埠组；O_1—2n.宁国组；O_1—3h—h.胡乐组、砚瓦山组、黄泥岗组并层；O_3c.长坞组；S_1x. 霞乡组；S_1h.河沥溪组；K_1h.徽洲组

Fig. 1. Geological sketch map of Ningguo region

下载: 全尺寸图片幻灯片

图 2 部分元素衬度系数对比

R. 基岩；C. 成土母质；B. 心土层；A. 表土层

Fig. 2. Columnar comparison graph of foil coefficients in rock-soil system

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图 3 宁国地区土壤Cu、Zn、Se地球化学图(比例尺同图 1)

R. 基岩；C. 成土母质；B. 心土层；A. 表土层

Fig. 3. Geochemistry graph of Cu, Zn, Se in soil in Ningguo region

下载: 全尺寸图片幻灯片

表 1 宁国地区主要岩石-土壤剖面元素地质背景值

Table 1. Elements' geologic background value of rock-soil sections in Ningguo region

表 2 宁国地区部分元素背景值和中国土壤背景值、上地壳丰度值的比较

Table 2. Comparison between partial elements background value in Ningguo region and China soil background value and top crust abundance value

表 3 宁国地区岩石-土壤剖面元素和氧化物的衬度系数

Table 3. Foil coefficients of elements and oxide in rock-soil sections in Ningguo region

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