Mechanism of River Electrical Conductivity in the Dongjiang River Basin

LI Shanchi; ZHENG Xiongbo; GAO Quanzhou; TAO Zhen; XIE Chenji; LIU Longhai

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Mechanism of River Electrical Conductivity in the Dongjiang River Basin

更新时间：2023-12-11

- Mechanism of River Electrical Conductivity in the Dongjiang River Basin
- Acta Scientiarum Naturalium Universitatis SunYatseni Vol. 52, Issue 1, Pages: 142-146(2013)
- 作者机构：
  
  1. 中山大学地理科学与规划学院∥广东省城市化与地理环境空间模拟重点实验室,广东,广州,510275
  2. 广东省地质过程与矿产资源探查重点实验室,广东,广州,510275
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2013，
  
  Published Online：25 January 2013，
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LI Shanchi, ZHENG Xiongbo, GAO Quanzhou, et al. Mechanism of River Electrical Conductivity in the Dongjiang River Basin. [J]. Acta Scientiarum Naturalium Universitatis SunYatseni 52(1):142-146(2013)
DOI：

LI Shanchi, ZHENG Xiongbo, GAO Quanzhou, et al. Mechanism of River Electrical Conductivity in the Dongjiang River Basin. [J]. Acta Scientiarum Naturalium Universitatis SunYatseni 52(1):142-146(2013) DOI：

摘要

分别于枯水期和丰水期在东江流域包括干流和支流在内的100个站点实测河水的电导率及相关离子浓度，据此讨论了河水电导率的形成机制。结果表明，东江流域枯水期（1月份）河水电导率均值为853 μS/cm，丰水期（7月份）河水电导率均值为877 μS/cm。东江流域河水电导率（离子浓度）主要来自地表岩石和矿物的化学风化过程，人类活动对东江河水电导率的干扰较为明显，同时大气海盐沉降过程对东江河水电导率也产生一定程度的影响。运用非参数统计和空间分析等手段处理原始数据，定量地发现流域岩性、地貌、土壤、植被和人类活动等因素对河水电导率均具有大小不同的贡献。

Abstract

Based on the hydrochemical data of water samples from the Dongjiang River Basin in dry and wet seasons

the mechanism of river electrical conductivity (EC) is considered. The results show that EC in the Dongjiang River Basin is 85.3 μS/cm in January and 87.7 μS/cm in July. The share of weathering conductivity (

)

seasalt conductivity (

) and anthropogenic conductivity (

) is 46.4%

19.6% and 33.9% respectively. It indicates that chemical weathering is the main contributing factor for EC in the Dongjiang River Basin. The humanity interference cannot be neglected

while the seasalt settlement has certain effects on the hydrochemistry. Furthermore

the nonparametric statistics methods and spatial analysis are used to prove that the geographic features (lithology

landform

soil

vegetation and human activities) have played an important role in the EC mechanism.

关键词

河流水化学电导率化学风化人类活动东江流域

Keywords

hydrochemistryelectrical conductivitychemical weatheringhuman activitiesthe Dongjiang river basin

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