| 甘肃公婆泉铜矿区植物地球化学特征 |
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| 引用本文： | 宋慈安,雷良奇,杨启军,王德润,杨云松.甘肃公婆泉铜矿区植物地球化学特征[J].地球化学,2000,29(4):343-350. |
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| 作者姓名： | 宋慈安 雷良奇 杨启军 王德润 杨云松 |
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| 作者单位： | 1. 桂林工学院,广西,桂林,541004
2. 甘肃有色地质勘查局,甘肃,兰州,730000 |
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| 基金项目： | 国家计委“九五”科技找矿项目!(JG9471901) |
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| 摘 要： | 公婆泉铜矿区植被属荒漠植被类型,主要产出红沙（Ｒｅａｕｍｕｒｉａ ｓｏｏｎｇｒｉｃａ）、木本猪毛莱（Ｓａｌｓｏｌａ ａｒｂｕｓｃｕｌａ）及细枝盐爪爪（Ｋａｌｉｄｉｕｍ ｇｒａｃｌｅ）３种群落。植物可分为富Ｋ、Ｎａ贫Ｃａ、Ｍｇ和富Ｃａ、Ｍｇ贫Ｋ、Ｎａ两种生物地球化学类型。矿区植物中元素平均含量及变化系数大于背景区;元素含量矿区呈偏对数正态或双峰分布,背景区呈对数正态分布。Ｎａ、Ｋ、Ｍｇ、Ｃｕ、Ｐｂ、
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| 关 键 词： | 植物群落 植物地球化学 生理吸收特性 铜矿 甘肃 |
Characteristics of phytogeochemistry in Gongpoquan copper ore field, Gangsu, China |
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| SONG Ci-an,LEI Liang-qi,YANG Qi-jun,WANG De-run,YANG Yun-song.Characteristics of phytogeochemistry in Gongpoquan copper ore field, Gangsu, China[J].Geochimica,2000,29(4):343-350. |
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| Authors: | SONG Ci-an LEI Liang-qi YANG Qi-jun WANG De-run YANG Yun-song |
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| Abstract: | The vegetation belongs to a type of hungriness one in Gongpoquan Cuore field. There are mostly three kinds of floral communities of Reaumuria soongrica, Salsola arbuscula and Kalidium gracile. The plants are divided into two biogeochemical types that are rich in K and Na, but poor in Ca and Mg, and rich in Ca and Mg, but poor in K and Na. The mean values and variation coefficients ofelement contents in the plants of the ore field are greater than those in the background area. The element content in the plants is characteristic of leaning lognormal or bimodal distribution in the mine area, but of lognormal distributionin the background area. Most elements, such as Na, K, Mg, Cu, Pb, Zn, As, Sb, Mo, Sn, B etc. are rich in leaf and twig, but a small quantity of elements, such as Ca, Au, Ag etc. are rich in thizoma. Between the ore field and the backgroundarea the correlativity among elements in plants are similar to a certain degree. The biologic accumulation coefficient of Au, Ag, B and Mo is more than 1 or approximate of 1; that of Cu, Zn, As, Sb, Sn, Sr, Co and Ni is from 0 5 to 0 1; and that of Ti, V, Cr, Mn, Ba and Pb is less than 0 1 Relative magnitude of biologic accumulation coefficient of elements in the plants in the ore field and the background area is similar as a whole. In the ore field, the contrast value of elements is greater in the soil, and also greater in the plants, but the accumulation coefficient of strongly accumulational elements is all minished in the ore field comparing with the background area, and the contrast value of elements in the plants is less than that in the soil. To the elements such as Cu, Ag, Pb etc. having less screening effect in plants, no matter how their accumulation coefficient is big or small, they all are able to be distinguished clearly between geochemical anomaly and background. |
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| Keywords: | floral community botanogeochemistry physiological absorption character copper mine Gangsu Province |
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