Effects of Canopy of Natural Forest on Water Quality

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Effects of Canopy of Natural Forest on Water Quality

更新时间：2024-11-07

- Effects of Canopy of Natural Forest on Water Quality
- Issue 3, Pages: 56-60(2006)
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- Published：2006
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Effects of Canopy of Natural Forest on Water Quality[J]. 2006, (3): 56-60.
DOI：

Effects of Canopy of Natural Forest on Water Quality[J]. 2006, (3): 56-60. DOI：

摘要

通过对秦岭火地塘天然林林区大气降水和林内雨pH值等相关水质指标进行测试和对测试结果进行对比分析．发现天然林冠层对酸性降水有显著的调节作用，可使其酸性降低并趋于中性，而起关键作用的是林木的叶。林冠层对降水中NO3^-有一定的净化作用。降水通过林冠层后。NH4^＋、K、PO4^3-、Na、Mg、Fe含量增加．其中K含量增加非常显著；其次．林冠层还对NH4^＋、Na、Ca、Mg有调节作用。林内雨中，K、Na、Ca、Mg含量在林木落叶期较高。林冠层对Cd、Pb、Mn、Zn均有吸附作用，对Cd的吸附能力平均在0．8μg／L左右。其中对Pb、Zn吸附作用不但非常强．而且还有调节和稳定作用。

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College of Agricultural Science and Engineering， Hohai University

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ZHANG Zhi-hua1,CHEN Wei-feng2,SHI Yue-feng3(1.College of Resources Science and Technology,Beijing Normal University,Beijing 100875,2.College of Resources and Environment,Shandong Agricultural University,Taian,Shandong 271018,3.College of Resources and Environmental Sciences,China Agricultural University,)

西北农林科技大学水土保持研究所,陕西杨凌

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