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林业科学 ›› 2012, Vol. 48 ›› Issue (4): 1-7.doi: 10.11707/j.1001-7488.20120401

• 论文 •    下一篇

秦岭林区径流水化学对雨水酸化的响应

张胜利1,2,3, 梁翠萍1,2, 晋建霞1,2, 覃超1   

  1. 1. 西北农林科技大学资源环境学院 杨凌 712100;2. 陕西秦岭森林生态系统国家野外科学观测研究站 杨凌 712100;3. 农业部西北植物营养与农业环境重点实验室 杨凌 712100
  • 收稿日期:2011-04-14 修回日期:2012-02-21 出版日期:2012-04-25 发布日期:2012-04-25

Response of Stream Water Chemistry to Rainwater Acidification in the Natural Forest Region of the Qinling Mountains

Zhang Shengli1,2,3, Liang Cuiping1,2, Jin Jianxia1,2, Qin Chao1   

  1. 1. College of Resources and Environment, Northwest A&F University Yangling 712100;2. Qinling National Forest Ecosystem Research Station Yangling 712100;3. Key Laboratory of Plant Nutrition and the Agri-Environment in Northwest China, Ministry of Agriculture Yangling 712100
  • Received:2011-04-14 Revised:2012-02-21 Online:2012-04-25 Published:2012-04-25

摘要:

在秦岭南坡天然林分布地带选择火地塘典型林区,测定区内雨季降雨和流域出口径流水样pH值及水化学成分,探讨秦岭林区径流水化学对雨水酸化的响应。结果表明: 长期雨水酸化可导致林区径流pH值降低,Ca2+和Mg2+浓度降低,K+和Na+浓度变化与雨水酸化关系不大; 径流Zn,Pb和Cd浓度对雨水酸化响应不明显,酸化雨水未导致森林土壤富集的重金属释放。

关键词: 秦岭, 森林, 水化学, 雨水酸化

Abstract:

This study was conducted in the Huoditang naturally-regenerated forest, which is located at the center of the natural forest region across the southern-slope of the Qinling Mountains. Rainwater and stream water samples were collected mainly in rainy seasons in the area. The sample pH values and chemical concentrations were measured. The response of stream water chemistry to rainwater acidification in the region was studied. The results showed that long time rainwater acidification could result in reduction of pH value, Ca2+ and Mg2+ concentration in the strean water. The changes of K+, Na+ concentration of stream water were not correlated with the rainwater acidification. There was no response of Zn, Pb and Cd concentration of the stream water to rainwater acidification. The acidified rainwater did not result in the release of the heavy metals enriched in the forest soil.

Key words: Qinling Mountains, forest, water chemistry, rainwater acidification

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