| PAM特性对花岗岩崩岗崩积体径流及产沙的影响 |
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| 引用本文： | 张兆福,黄炎和,林金石,蒋芳市,朱高立,林直鸿,曾昌碧,何恺文.PAM特性对花岗岩崩岗崩积体径流及产沙的影响[J].水土保持研究,2014,21(3):1-5. |
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| 作者姓名： | 张兆福 黄炎和 林金石 蒋芳市 朱高立 林直鸿 曾昌碧 何恺文 |
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| 作者单位： | 福建农林大学 资源与环境学院, 福州 350002 |
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| 摘 要： | 研究利用人工模拟降雨，研究不同分子量（800万、1 200万和1 500万），不同水解度（10%，20%，30%）聚丙烯酰胺（PAM）对崩岗崩积体土壤侵蚀和径流的影响。结果表明:3种分子量和水解度的PAM都能够减少土壤侵蚀量，1 200万分子量PAM处理土壤侵蚀的效果最好，PAM的水解度对抗侵蚀影响差异不明显；各种PAM处理均使径流量增加，随着分子量的变大，径流量也在增加，而同一分子量的PAM，其水解度对径流量和侵蚀量的影响大致成反比关系；PAM处理下侵蚀土壤中不同粒径颗粒的含量会发生变化，砂粒的含量会有所增加，粉粒和黏粒的含量会减少。综合价格和抗侵蚀效果来看，1 200万10%水解度的PAM更适合于崩岗崩积体侵蚀治理。
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| 关 键 词： | PAM 分子量 水解度 崩积体 侵蚀 径流 |
Effects of PAM Characteristics on Runoff and Erosion of Colluvial Deposits in Benggang |
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| ZHANG Zhao-fu,HUANG Yan-he,LIN Jin-shi,JIANG Fang-shi,ZHU Gao-li,LIN Zhi-hong,ZENG Chang-bi,HE Kai-wen.Effects of PAM Characteristics on Runoff and Erosion of Colluvial Deposits in Benggang[J].Research of Soil and Water Conservation,2014,21(3):1-5. |
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| Authors: | ZHANG Zhao-fu HUANG Yan-he LIN Jin-shi JIANG Fang-shi ZHU Gao-li LIN Zhi-hong ZENG Chang-bi HE Kai-wen |
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| Institution: | College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China |
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| Abstract: | Effects of PAMs with different molecular weights (MW) (8×106, 1.2×107, 1.5×107 Da) and hydrolysis degrees (10%, 20%, 30%) on soil erosion and runoff were investigated through artificial simulation rainfall experiment. The results showed that all the three PAMs decreased soil erosion separately compared with the control, the molecular weight of 1.2×107 Da was more effective than the other two, the hydrolysis degree did not show much difference in affecting soil erosion. PAMs different in molecular weights and degrees of hydrolysis, increased runoff, the higher the molecular weight was, the more the runoff increased, meanwhile, the degree of hydrolysis influenced the runoff and the erosion in an inverse relation. All the PAMs affected the content of eroded sediment particles, the percentage of sand-sized particles increased, whereas the fraction of silt-sized and clay-sized particles decreased. Considering the costs of PAMs and the effect of erosion resistance, the PAM with hydrolysis of 10% and molecular weight of 1.2×107 Da was more suitable for application to colluvial deposits of Benggang. |
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| Keywords: | PAM molecular weight hydrolysis colluvial deposits erosion runoff |
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